14 CFR Part 150 — Airport Noise Compatibility Planning

SUBCHAPTER I—AIRPORTS

from the operations of an airport. This PART 150—AIRPORT NOISE part also identifies those land uses COMPATIBILITY PLANNING which are normally compatible with various levels of exposure to noise by Subpart A—General Provisions individuals. It provides technical as- Sec.

sistance to airport operators, in con- 150.1 Scope and purpose.

junction with other local, State, and 150.3 Applicability.

Federal authorities, to prepare and 150.5 Limitations of this part.

execute appropriate noise compat- 150.7 Definitions.

ibility planning and implementation 150.9 Designation of noise systems.

programs.

150.11 Identification of land uses.

150.13 Incorporations by reference.

§ 150.3 Applicability.

Subpart B—Development of Noise Expo- This part applies to the airport noise sure Maps and Noise Compatibility compatibility planning activities of Programs the operators of ‘‘public use airports,’’ including heliports, as that term is 150.21 Noise exposure maps and related de- used in section 47501(2) as amended (49 scriptions.

U.S.C. 47501 et seq. ) and as defined in 150.23 Noise compatibility programs.

section 47102(17) of 49 U.S.C.

Subpart C—Evaluations and Determina- [Docket FAA–2004–19158, 69 FR 57625, Sept. 24, tions of Effects of Noise Compatibility 2004] Programs § 150.5 Limitations of this part.

150.31 Preliminary review: Acknowledg- ments.

(a) Pursuant to 49 U.S.C. 47501 et seq., 150.33 Evaluation of programs.

this part provides for airport noise 150.35 Determinations; publications; compatibility planning and land use effectivity.

programs necessary to the purposes of A PPENDIX A TO P ART 150—N OISE E XPOSURE those provisions. No submittal of a M APS map, or approval or disapproval, in A PPENDIX B TO P ART 150—N OISE C OMPAT - whole or part, of any map or program IBILITY P ROGRAMS submitted under this part is a deter- A UTHORITY : 49 U.S.C. 106(g), 40113, 44715, mination concerning the acceptability 47101, 47501–47504.

or unacceptability of that land use S OURCE : Docket 18691, 49 FR 49269, Dec. 18, under Federal, State, or local law.

1984, unless otherwise noted.

(b) Approval of a noise compatibility program under this part is neither a Subpart A—General Provisions commitment by the FAA to financially assist in the implementation of the § 150.1 Scope and purpose.

program, nor a determination that all This part prescribes the procedures, measures covered by the program are standards, and methodology governing eligible for grant-in-aid funding from the development, submission, and re- the FAA.

view of airport noise exposure maps (c) Approval of a noise compatibility and airport noise compatibility pro- program under this part does not by grams, including the process for evalu- itself constitute an FAA implementing ating and approving or disapproving action. A request for Federal action or those programs. It prescribes single approval to implement specific noise systems for—(a) measuring noise at compatibility measures may be re- airports and surrounding areas that quired, and an FAA decision on the re- generally provides a highly reliable re- quest may require an environmental lationship between projected noise ex- assessment of the proposed action, pur- posure and surveyed reaction of people suant to the National Environmental to noise; and (b) determining exposure Policy Act (42 U.S.C. 4332 et seq. ) and of individuals to noise that results guidelines.

VerDate Sep<11>2014 10:01 Aug 27, 2026 Jkt 268049 PO 00000 Frm 00685 Fmt 8010 Sfmt 8010 Y:\SGML\268049.XXX 268049 jgilmore on DSK4WB1RN3PROD with CFR 14 CFR Ch. I (1–1–26 Edition) § 150.7 (d) Acceptance of a noise exposure tion for any indoor activities involved) map does not constitute an FAA deter- at the location because the yearly day- mination that any specific parcel of night average sound level is at or below land lies within a particular noise con- that identified for that or similar use tour. Responsibility for interpretation under appendix A (Table 1) of this part.

of the effects of noise contours upon Day-night average sound level (DNL) subjacent land uses, including the rela- means the 24-hour average sound level, tionship between noise contours and in decibels, for the period from mid- specific properties, rests with the spon- night to midnight, obtained after the sor or with other state or local govern- addition of ten decibels to sound levels ment.

for the periods between midnight and 7 a.m., and between 10 p.m., and mid- [Docket 18691, 49 FR 49269, Dec. 18, 1984, as night, local time. The symbol for DNL amended by Amdt. 150–4, 69 FR 57625, Sept.

is L .

24, 2004] dn Noise exposure map means a scaled, § 150.7 Definitions.

geographic depiction of an airport, its noise contours, and surrounding area As used in this part, unless the con- developed in accordance with section text requires otherwise, the following A150.1 of Appendix A of this part, in- terms have the following meanings.

cluding the accompanying documenta- Airport means any public use airport, tion setting forth the required descrip- including heliports, as defined by the tions of forecast aircraft operations at ASNA Act, including: (a) Any airport that airport during the fifth calendar which is used or to be used for public year (or later) beginning after submis- purposes, under the control of a public sion of the map, together with the agency, the landing area of which is ways, if any, those operations will af- publicly owned; (b) any privately fect the map (including noise contours owned reliever airport; and (c) any pri- and the forecast land uses).

vately owned airport which is deter- Noise level reduction (NLR) means the mined by the Secretary to enplane an- amount of noise level reduction in nually 2,500 or more passengers and re- decibels achieved through incorpora- ceive scheduled passenger service of tion of noise attenuation (between out- aircraft, which is used or to be used for door and indoor levels) in the design public purposes.

and construction of a structure.

Airport noise compatibility program and Noncompatible land use means the use program mean that program, and all re- of land that is identified under this visions thereto, reflected in documents part as normally not compatible with (and revised documents) developed in the outdoor noise environment (or an accordance with appendix B of this adequately attenuated noise reduction part, including the measures proposed level for the indoor activities involved or taken by the airport operator to re- at the location) because the yearly duce existing noncompatible land uses day-night average sound level is above and to prevent the introduction of ad- that identified for that or similar use ditional noncompatible land uses with- under appendix A (Table 1) of this part.

in the area.

Regional Airports Division Manager Airport Operator means, the operator means the Airports Division Manager of an airport as defined in the ASNA having responsibility for the geo- Act.

ASNA Act means 49 U.S.C. 47501 et seq. graphic area in which the airport in Average sound level means the level, question is located.

in decibels, of the mean-square, A- Restriction affecting flight procedures weighted sound pressure during a speci- means any requirement, limitation, or fied period, with reference to the other action affecting the operation of square of the standard reference sound aircraft, in the air or on the ground.

pressure of 20 micropascals. Sound exposure level means the level, Compatible land use means the use of in decibels, of the time integral of land that is identified under this part squared A-weighted sound pressure as normally compatible with the out- during a specified period or event, with door noise environment (or an ade- reference to the square of the standard quately attenuated noise level reduc- reference sound pressure of 20 VerDate Sep<11>2014 10:01 Aug 27, 2026 Jkt 268049 PO 00000 Frm 00686 Fmt 8010 Sfmt 8010 Y:\SGML\268049.XXX 268049 jgilmore on DSK4WB1RN3PROD with CFR Federal Aviation Administration, DOT § 150.13 micropascals and a duration of one sec- and were approved for incorporation by ond. reference by the Director of the Fed- Yearly day-night average sound level eral Register under 5 U.S.C. 552(a) and (YDNL) means the 365-day average, in 1 CFR part 51.

decibels, day-night average sound (b) Changes to incorporated matter. In- level. The symbol for YDNL is also L .

dn corporated matter which is subject to subsequent change is incorporated by [Docket 18691, 49 FR 49269, Dec. 18, 1984, as reference according to the specific ref- amended by Amdt. 150–1, 53 FR 8724, Mar. 16, 1988; 53 FR 9726, Mar. 24, 1988; Amdt. 150–2, 54 erence and to the identification state- FR 39295, Sept. 25, 1989; Amdt. 150–4, 69 FR ment. Adoption of any subsequent 57625, Sept. 24, 2004] change in incorporated matter that af- fects compliance with standards and § 150.9 Designation of noise systems.

procedures of this part will be made For purposes of this part, the fol- under 14 CFR part 11 and 1 CFR part 51.

lowing designations apply: (c) Identification statement. The com- (a) The noise at an airport and sur- plete title or description which identi- rounding areas covered by a noise expo- fies each published matter incor- sure map must be measured in A- porated by reference in this part is as weighted sound pressure level (L ) in A follows: units of decibels (dBA) in accordance International Electrotechnical Commission with the specifications and methods (IEC) Publication No. 179, entitled ‘‘Precision prescribed under appendix A of this Sound Level Meters,’’ dated 1973.

part.

(b) The exposure of individuals to (d) Availability for purchase. Published noise resulting from the operation of material incorporated by reference in an airport must be established in terms this part may be purchased at the price of yearly day-night average sound level established by the publisher or dis- (YDNL) calculated in accordance with tributor at the following mailing ad- the specifications and methods pre- dresses.

scribed under appendix A of this part.

IEC publications: (c) Uses of computer models to create (1) The Bureau Central de la Commission noise contours must be in accordance Electrotechnique, Internationale, 1, rue de with the criteria prescribed under ap- Varembe, Geneva, Switzerland.

pendix A of this part.

(2) American National Standards Institute, 1430 Broadway, New York, NY 10018.

§ 150.11 Identification of land uses.

(e) Availability for inspection. A copy For the purposes of this part, uses of of each publication incorporated by land which are normally compatible or reference in this part is available for noncompatible with various noise expo- public inspection at the following loca- sure levels to individuals around air- tions: ports must be identified in accordance (1) FAA Office of the Chief Counsel, with the criteria prescribed under ap- Rules Docket, AGC–200, Federal Avia- pendix A of this part. Determination of tion Administration Headquarters land use must be based on professional Building, 800 Independence Avenue, planning criteria and procedures uti- SW., Washington, DC 20591.

lizing comprehensive, or master, land use planning, zoning, and building and (2) The respective Regional Offices of site designing, as appropriate. If more the Federal Aviation Administration than one current or future land use is as follows. The most current mailing permissible, determination of compat- address, phone numbers, and States ibility must be based on that use most covered by each region are available on adversely affected by noise. the FAA’s Web site at http:// www.faa.gov/arp/index.cfm?nav = hq.

§ 150.13 Incorporations by reference.

(i) New England Regional Office, 12 New England Executive Park, Bur- (a) General. This part prescribes cer- lington, Massachusetts 01803.

tain standards and procedures which are not set forth in full text in the (ii) Eastern Regional Office, Airports rule. Those standards and procedures Division, 1 Aviation Plaza, Jamaica, are hereby incorporated by reference NY 11434–4809.

VerDate Sep<11>2014 10:01 Aug 27, 2026 Jkt 268049 PO 00000 Frm 00687 Fmt 8010 Sfmt 8010 Y:\SGML\268049.XXX 268049 jgilmore on DSK4WB1RN3PROD with CFR 14 CFR Ch. I (1–1–26 Edition) § 150.21 (iii) Southern Regional Office, Fed- years in the future, beginning after the eral Aviation Administration, ATTN: date of submission (based on reason- ASO–600, P.O. Box 20636, Atlanta, GA able assumptions concerning future 30320–0631.

type and frequency of aircraft oper- (iv) Great Lakes Regional Office, 2300 ations, number of nighttime oper- East Devon, Des Plaines, Illinois 60018.

ations, flight patterns, airport layout (v) Central Regional Office, Federal including any planned airport develop- Aviation Administration, ACE–600, 901 ment, planned land use changes, and Locust, Kansas City, MO 64106–2325.

demographic changes in the sur- (vi) Southwest Regional Office, Fed- rounding areas); and eral Aviation Administration, 2601 (2) The nature and extent, if any, to Meacham Blvd., Fort Worth, TX 76137– which those forecast operations will af- 4298.

fect the compatibility and land uses (vii) Northwest Mountain Regional depicted on the map.

Office, Federal Aviation Administra- (b) Each map, and related docu- tion, Airports Division, 1601 Lind Ave- mentation submitted under this sec- nue SW., Suite 315, Renton, WA 98055– tion must be developed and prepared in 4056.

accordance with appendix A of this (viii) Western Pacific Regional Of- part, or an FAA approved equivalent, fice, 15000 Aviation Boulevard, Haw- thorne, California (P.O. Box 92007, and in consultation with states, and Worldway Postal Center, Los Angeles) public agencies and planning agencies 90009.

whose area, or any portion of whose (ix) Alaskan Regional Office, 222 W.

area, of jurisdiction is within the L 65 dn 7th Avenue #14, Anchorage, AK 9951.

dB contour depicted on the map, FAA (3) National Archives and Records regional officials, and other Federal of- Administration (NARA). For informa- ficials having local responsibility for tion on the availability of this mate- land uses depicted on the map. This rial at NARA, call 202–741–6030, or go consultation must include regular to: http://www.archives.gov/fed- aeronautical users of the airport. The eral _ register/code _ of _ federal _ regulations/ airport operator shall certify that it ibr _ locations.html.

has afforded interested persons ade- [Docket 18691, 49 FR 49269, Dec. 18, 1984, as quate opportunity to submit their amended by Amdt. 150–2, 54 FR 39295, Sept.

views, data, and comments concerning 25, 1989; 69 FR 18803, Apr. 9, 2004; Amdt. 150– the correctness and adequacy of the 4, 69 FR 57625, Sept. 24, 2004; 72 FR 68475, Dec.

draft noise exposure map and descrip- 5, 2007] tions of forecast aircraft operations.

Each map and revised map must be ac- Subpart B—Development of Noise companied by documentation describ- Exposure Maps and Noise ing the consultation accomplished Compatibility Programs under this paragraph and the opportu- nities afforded the public to review and § 150.21 Noise exposure maps and re- comment during the development of lated descriptions.

the map. One copy of all written com- (a) Each airport operator may after ments received during consultation completion of the consultations and shall also be filed with the Regional public procedure specified under para- Airports Division Manager.

graph (b) of this section submit to the (c) The Regional Airports Division Regional Airports Division Manager Manager acknowledges receipt of noise five copies of the noise exposure map exposure maps and descriptions and in- (or revised map) which identifies each dicates whether they are in compliance noncompatible land use in each area with the applicable requirements. The depicted on the map, as of the date of Regional Airports Division Manager submission, and five copies of a map publishes in the F EDERAL R EGISTER a each with accompanying documenta- notice of compliance for each such tion setting forth— (1) The noise exposure based on fore- noise exposure map and description, cast aircraft operations at the airport identifying the airport involved. Such for a forecast period that is at least 5 notice includes information as to when VerDate Sep<11>2014 10:01 Aug 27, 2026 Jkt 268049 PO 00000 Frm 00688 Fmt 8010 Sfmt 8010 Y:\SGML\268049.XXX 268049 jgilmore on DSK4WB1RN3PROD with CFR Federal Aviation Administration, DOT § 150.21 and where the map and related docu- are subsequently disapproved by the mentation are available for public in- FAA, a revised map must be submitted spection. if revised assumptions would create a (d) The airport operator shall, in ac- substantial, new noncompatible use cordance with this section, promptly not indicated on the forecast map. Re- prepare and submit a revised noise ex- vised noise exposure maps are subject posure map.

to the same requirements and proce- (1) If, after submission of a noise ex- dures as initial submissions of noise ex- posure map under paragraph (a) of this posure maps under this part.

section, any change in the operation of (e) Each map, or revised map, and de- the airport would create any ‘‘substan- scription of consultation and oppor- tial, new noncompatible use’’ in any tunity for public comment, submitted area depicted on the map beyond that to the FAA, must be certified as true which is forecast for a period of at and complete under penalty of 18 least five years after the date of sub- U.S.C. 1001.

mission, the airport operator shall, in (f)(1) Title 49, section 47506 provides accordance with this section, promptly that no person who acquires property prepare and submit a revised noise ex- or an interest therein after the date of posure map. A change in the operation enactment of the Act in an area sur- of an airport creates a substantial new rounding an airport with respect to noncompatible use if that change re- which a noise exposure map has been sults in an increase in the yearly day- submitted under section 47503 of the night average sound level of 1.5 dB or Act shall be entitled to recover dam- greater in either a land area which was ages with respect to the noise attrib- formerly compatible but is thereby utable to such airport if such person made noncompatible under Appendix A had actual or constructive knowledge (Table 1), or in a land area which was of the existence of such noise exposure previously determined to be non- map unless, in addition to any other compatible under that Table and whose elements for recovery of damages, such noncompatibility is now significantly person can show that— increased.

(2) If, after submission of a noise ex- No person who acquires property or an inter- posure map under paragraph (a) of this est therein after the date of enactment of the Act in an area surrounding an airport section, any change in the operation of with respect to which a noise exposure map the airport would significantly reduce has been submitted under section 103 of the noise over existing noncompatible uses Act shall be entitled to recover damages that is not reflected in either the exist- with respect to the noise attributable to ing conditions or forecast noise expo- such airport if such person had actual or sure map on file with the FAA, the air- constructive knowledge of the existence of port operator shall, in accordance with such noise exposure map unless, in addition this section, promptly prepare and sub- to any other elements for recovery of dam- mit a revised noise exposure map. A ages, such person can show that— change in the operation of the airport (i) A significant change in the type or fre- quency of aircraft operations at the airport; creates a significant reduction in noise or over existing noncompatible uses if (ii) A significant change in the airport lay- that change results in a decrease in the out; or yearly day-night average sound level of (iii) A significant change in the flight pat- 1.5 dB or greater in a land area which terns; or was formerly noncompatible but is (iv) A significant increase in nighttime op- thereby made compatible under Appen- erations; occurred after the date of the ac- dix A (Table 1).

quisition of such property or interest therein (3) Such updating of the map shall in- and that the damages for which recovery is clude a reassessment of those areas ex- sought have resulted from any such change cluded under section A150.101(e)(5) of or increase.’’ Appendix A because of high ambient (f)(2) Title 49 section 47506(b) further noise levels.

provides: (4) If the forecast map is based on as- sumptions involving recommendations That for this purpose, ‘‘constructive knowl- in a noise compatibility program which edge’’ shall be imputed, at a minimum, to VerDate Sep<11>2014 10:01 Aug 27, 2026 Jkt 268049 PO 00000 Frm 00689 Fmt 8010 Sfmt 8003 Y:\SGML\268049.XXX 268049 jgilmore on DSK4WB1RN3PROD with CFR 14 CFR Ch. I (1–1–26 Edition) § 150.23 any person who acquires property or an in- the noise exposure map, and other Fed- terest therein in an area surrounding an air- eral officials having local responsi- port after the date of enactment of the Act bility of land uses depicted on the map.

if— Consultation with FAA regional offi- (i) Prior to the date of such acquisition, cials shall include, to the extent prac- notice of the existence of a noise exposure map for such area was published at least ticable, informal agreement from FAA three times in a newspaper of general cir- on proposed new or modified flight pro- culation in the county in which such prop- cedures. For air carrier airports, con- erty is located; or sultation must include any air carriers (ii) A copy of such noise exposure map is and, to the extent practicable, other furnished to such person at the time of such aircraft operators using the airport.

acquisition.

For other airports, consultation must (g) For this purpose, the term signifi- include, to the extent practicable, air- cant in paragraph (f) of this section craft operators using the airport.

means that change or increase in one (d) Prior to and during the develop- or more of the four factors which re- ment of a program, and prior to sub- sults in a ‘‘substantial new noncompat- mission of the resulting draft program ible use’’ as defined in § 150.21(d), affect- to the FAA, the airport operator shall ing the property in issue. Responsi- afford adequate opportunity for the ac- bility for applying or interpreting this tive and direct participation of the provision with respect to specific prop- States, public agencies and planning erties rests with local government.

agencies in the areas surrounding the [Docket 18691, 49 FR 49269, Dec. 1, 1984; 50 FR airport, aeronautical users of the air- 5063, Feb. 6, 1985; Amdt. 150–2, 54 FR 39295, port, the airport operator, and the gen- Sept. 25, 1989; Amdt. 150–4, 69 FR 57626, Sept.

eral public to submit their views, data, 24, 2004] and comments on the formulation and adequacy of that program. Prior to § 150.23 Noise compatibility programs.

submitting the program to the FAA, (a) Any airport operator who has sub- the airport operator shall also provide mitted an acceptable noise exposure notice and the opportunity for a public map under § 150.21 may, after FAA no- hearing.

tice of acceptability and other con- (e) Each noise compatibility program sultation and public procedure speci- submitted to the FAA must consist of fied under paragraphs (b) and (c) of this at least the following: section, as applicable, submit to the (1) A copy of the noise exposure map Regional Airports Division Manager and its supporting documentation as five copies of a noise compatibility pro- found in compliance with the applica- gram.

ble requirements by the FAA, per (b) An airport operator may submit § 150.21(c).

the noise compatibility program at the (2) A description and analysis of the same time as the noise exposure map.

alternative measures considered by the In this case, the Regional Airports Di- airport operator in developing the pro- vision Manager will not begin the stat- gram, together with a discussion of utory 180-day review period (for the why each rejected measure was not in- program) until after FAA reviews the cluded in the program.

noise exposure map and finds that it (3) Program measures proposed to re- and its supporting documentation are duce or eliminate present and future in compliance with the applicable re- noncompatible land uses and a descrip- quirements.

tion of the relative contribution of (c) Each noise compatibility program each of the proposed measures to the must be developed and prepared in ac- overall effectiveness of the program.

cordance with appendix B of this part, or an FAA approved equivalent, and in (4) A description of public participa- consultation with FAA regional offi- tion and the consultation with officials cials, the officials of the state and of of public agencies and planning agen- any public agencies and planning agen- cies in areas surrounding the airport, cies whose area, or any portion or FAA regional officials and other Fed- whose area, of jurisdiction within the eral officials having local responsi- L 65 dB noise contours is depicted on bility for land uses depicted on the dn VerDate Sep<11>2014 10:01 Aug 27, 2026 Jkt 268049 PO 00000 Frm 00690 Fmt 8010 Sfmt 8010 Y:\SGML\268049.XXX 268049 jgilmore on DSK4WB1RN3PROD with CFR

Federal Aviation Administration, DOT § 150.33

map, any air carriers and other users of

Subpart C—Evaluations and De-

the airport.

terminations of Effects of

(5) The actual or anticipated effect of

Noise Compatibility Programs

the program on reducing noise expo- sure to individuals and noncompatible § 150.31 Preliminary review: Acknowl- edgments.

land uses and preventing the introduc- tion of additional noncompatible uses (a) Upon receipt of a noise compat- within the area covered by the noise ibility program submitted under exposure map. The effects must be § 150.23, the Regional Airports Division based on expressed assumptions con- Manager acknowledges to the airport cerning the type and frequency of air- operator receipt of the program and conducts a preliminary review of the craft operations, number of nighttime submission.

operations, flight patterns, airport lay- (b) If, based on the preliminary re- out including planned airport develop- view, the Regional Airports Division ment, planned land use changes, and Manager finds that the submission does demographic changes within the L 65 dn not conform to the requirements of dB noise contours.

this part, he disapproves and returns (6) A description of how the proposed the unacceptable program to the air- future actions may change any noise port operator for reconsideration and control or compatibility plans or ac- development of a program in accord- tions previously adopted by the airport ance with this part.

proprietor.

(c) If, based on the preliminary re- (7) A summary of the comments at view, the Regional Airports Division any public hearing on the program and Manager finds that the program con- a copy of all written material sub- forms to the requirements of this part, mitted to the operator under para- the Regional Airports Division Man- graphs (c) and (d) of this section, to- ager publishes in the F EDERAL R EG- gether with the operator’s response and ISTER a notice of receipt of the pro- disposition of those comments and ma- gram for comment which indicates the terials to demonstrate the program is following: feasible and reasonably consistent with (1) The airport covered by the pro- obtaining the objectives of airport gram, and the date of receipt.

noise compatibility planning under (2) The availability of the program this part. for examination in the offices of the Regional Airports Division Manager (8) The period covered by the pro- and the airport operator.

gram, the schedule for implementation (3) That comments on the program of the program, the persons responsible are invited and, will be considered by for implementation of each measure in the FAA.

the program, and, for each measure, (d) The date of signature of the pub- documentation supporting the feasi- lished notice of receipt starts the 180- bility of implementation, including day approval period for the program.

any essential governmental actions, costs, and anticipated sources of fund- [Docket 18691, 49 FR 49269, Dec. 18, 1984, as amended by Amdt. 150–2, 54 FR 39295, Sept.

ing, that will demonstrate that the 25, 1989] program is reasonably consistent with achieving the goals of airport noise § 150.33 Evaluation of programs.

compatibility planning under this part.

(a) The FAA conducts an evaluation (9) Provision for revising the program of each noise compatibility program if made necessary by revision of the and, based on that evaluation, either noise exposure map.

approves or disapproves the program.

[Docket 18691, 49 FR 49269, Dec. 18, 1984; 50 FR The evaluation includes consideration 5063, Feb. 6, 1985; Amdt. 150–2, 54 FR 39295, of proposed measures to determine Sept. 25, 1989; Amdt. 150–4, 69 FR 57626, Sept.

whether they— 24, 2004] (1) May create an undue burden on interstate or foreign commerce (includ- ing unjust discrimination); VerDate Sep<11>2014 10:01 Aug 27, 2026 Jkt 268049 PO 00000 Frm 00691 Fmt 8010 Sfmt 8010 Y:\SGML\268049.XXX 268049 jgilmore on DSK4WB1RN3PROD with CFR

14 CFR Ch. I (1–1–26 Edition) § 150.35

(2) Are reasonably consistent with withdrawn or a determination on it is obtaining the goal of reducing existing issued. A new evaluation is commenced noncompatible land uses and pre- upon receipt of a revised program, and venting the introduction of additional a new 180-day approval period is begun, noncompatible land uses; and unless the Regional Airports Division (3) Include the use of new or modified Manager finds that the modification flight procedures to control the oper- made, in light of the overall revised ation of aircraft for purposes of noise program, can be integrated into the un- control, or affect flight procedures in modified portions of the revised pro- any way.

gram without exceeding the original (b) The evaluation may also include 180-day approval period or causing an evaluation of those proposed meas- undue expense to the government.

ures to determine whether they may [Docket 18691, 49 FR 49269, Dec. 18, 1984, as adversely affect the exercise of the au- amended by Amdt. 150–2, 54 FR 39295, Sept.

thority and responsibilities of the Ad- 25, 1989] ministrator under the Federal Aviation Act of 1958, as amended.

§ 150.35 Determinations; publications; (c) To the extent considered nec- effectivity.

essary, the FAA may— (1) Confer with the airport operator (a) The FAA issues a determination and other persons known to have infor- approving or disapproving each airport mation and views material to the eval- noise compatibility program (and re- uation; vised program). Portions of a program (2) Explore the objectives of the pro- may be individually approved or dis- gram and the measures, and any alter- approved. No conditional approvals native measures, for achieving the ob- will be issued. A determination on a jectives.

program acceptable under this part is (3) Examine the program for devel- issued within 180 days after the pro- oping a range of alternatives that gram is received under § 150.23 of this would eliminate the reasons, if any, for part or it may be considered approved, disapproving the program.

except that this time period may be ex- (4) Convene an informal meeting with ceeded for any portion of a program re- the airport operator and other persons lating to the use of flight procedures involved in developing or imple- for noise control purposes. A deter- menting the program for the purposes mination on portions of a program cov- of gathering all facts relevant to the ered by the exceptions to the 180-day determination of approval or dis- review period for approval will be approval of the program and of dis- issued within a reasonable time after cussing any needs to accommodate or receipt of the program. Determinations modify the program as submitted.

relating to the use of any flight proce- (d) If requested by the FAA, the air- dure for noise control purposes may be port operator shall furnish all informa- issued either in connection with the de- tion needed to complete FAA’s review termination on other portions of the under (c).

program or separately. Except as pro- (e) An airport operator may, at any vided by this paragraph, no approval of time before approval or disapproval of any noise compatibility program, or a program, withdraw or revise the pro- any portion of a program, may be im- gram. If the airport operator with- plied in the absence of the FAA’s ex- draws or revises the program or indi- press approval.

cates to the Regional Airports Division (b) The Administrator approves pro- Manager, in writing, the intention to grams under this part, if— revise the program, the Regional Air- (1) It is found that the program meas- ports Division Manager terminates the ures to be implemented would not cre- evaluation and notifies the airport op- ate an undue burden on interstate or erator of that action. That termination foreign commerce (including any un- cancels the 180-day review period. The FAA does not evaluate a second pro- just discrimination) and are reasonably gram for any airport until any pre- consistent with achieving the goals of viously submitted program has been reducing existing noncompatible land VerDate Sep<11>2014 10:01 Aug 27, 2026 Jkt 268049 PO 00000 Frm 00692 Fmt 8010 Sfmt 8010 Y:\SGML\268049.XXX 268049 jgilmore on DSK4WB1RN3PROD with CFR

Federal Aviation Administration, DOT Pt. 150, App. A

uses around the airport and of pre- (6) Impacts on flight procedures, air venting the introduction of additional traffic management, or air commerce noncompatible land uses; occur which could not be foreseen at (2) The program provides for revision the time of approval.

if made necessary by the revision of A determination may be sooner re- the noise map; and scinded or modified for cause with at (3) Those aspects of programs relat- least 30 days written notice to the air- ing to the use of flight procedures for port operator of the FAA’s intention to noise control can be implemented with- rescind or modify the determination in the period covered by the program for the reasons stated in the notice.

and without— The airport operator may, during the (i) Reducing the level of aviation 30-day period, submit to the Regional safety provided; Airports Division Manager for consid- (ii) Derogating the requisite level of eration any reasons and circumstances protection for aircraft, their occupants why the determination should not be and persons and property on the rescinded or modified on the basis stat- ground; ed in the notice of intent. Thereafter, (iii) Adversely affecting the efficient the FAA either rescinds or modifies the use and management of the Navigable determination consistent with the no- Airspace and Air Traffic Control Sys- tice or withdraws the notice of intent tems; or and terminates the action.

(iv) Adversely affecting any other (e) Determinations may contain con- powers and responsibilities of the Ad- ditions which must be satisfied prior to ministrator prescribed by law or any implementation of any portion of the other program, standard, or require- program relating to flight procedures ment established in accordance with affecting airport or aircraft operations.

law.

(f) Noise exposure maps for current (c) When a determination is issued, and forecast year map conditions that the Regional Airports Division Man- are submitted and approved with noise ager notifies the airport operator and compatibility programs are considered publishes a notice of approval or dis- to be the new FAA accepted noise expo- approval in the F EDERAL R EGISTER sure maps for purposes of part 150.

identifying the nature and extent of [Docket 18691, 49 FR 49269, Dec. 18, 1984, as the determination.

amended by Amdt. 150–2, 54 FR 39295, Sept.

(d) Approvals issued under this part 25, 1989; Amdt. 150–4, 69 FR 57626, Sept. 24, for a program or portion thereof be- 2004] come effective as specified therein and may be withdrawn when one of the fol- lowing occurs: (1) The program or portion thereof is A PPENDIX A TO P ART 150—N OISE required to be revised under this part EXPOSURE M APS or under its own terms, and is not so revised; P ART A—G ENERAL (2) If a revision has been submitted Sec. A150.1 Purpose.

for approval, a determination is issued Sec. A150.3 Noise descriptors.

on the revised program or portion Sec. A150.5 Noise measurement procedures thereof, that is inconsistent with the and equipment.

prior approval.

P ART B—N OISE E XPOSURE M AP D EVELOPMENT (3) A term or condition of the pro- Sec. A150.101 Noise contours and land us- gram, or portion thereof, or its ap- ages.

proval is violated by the responsible Sec. A150.103 Use of computer prediction government body.

model.

(4) A flight procedure or other FAA Sec. A150.105 Identification of public agen- action upon which the approved pro- cies and planning agencies.

gram or portion thereof is dependent is P ART C—M ATHEMATICAL D ESCRIPTIONS subsequently disapproved, significantly altered, or rescinded by the FAA.

Sec. A150.201 General.

(5) The airport operator requests re- Sec. A150.203 Symbols.

scission of the approval. Sec. A150.205 Mathematical computations.

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14 CFR Ch. I (1–1–26 Edition) Pt. 150, App. A

P ART A—G ENERAL Methods for the Measurement of Sound Pres- sure Levels’’; ARP No. 796, dated 1969, enti- Sec. A150.1 Purpose.

tled ‘‘Measurement of Aircraft Exterior Noise in the Field’’; ‘‘Handbook of Noise (a) This appendix establishes a uniform Measurement,’’ Ninth Ed. 1980, by Arnold methodology for the development and prepa- P.G. Peterson; or ‘‘Acoustic Noise Measure- ration of airport noise exposure maps. That ment,’’ dated Jan., 1979, by J.R. Hassell and methodology includes a single system of K. Zaveri. For purposes of this part, meas- measuring noise at airports for which there urements intended for comparison to a State is a highly reliable relationship between pro- or local standard or with another transpor- jected noise exposure and surveyed reactions tation noise source (including other aircraft) of people to noise along with a separate sin- must be reported in maximum A-weighted gle system for determining the exposure of sound levels (L ); for computation or vali- AM individuals to noise. It also identifies land dation of the yearly day-night average level uses which, for the purpose of this part are (L dn ), measurements must be reported in considered to be compatible with various ex- ), as defined in Sec.

sound exposure level (L AE posures of individuals to noise around air- A150.205 of this appendix.

ports.

(b) This appendix provides for the use of P ART B—N OISE E XPOSURE M AP D EVELOPMENT the FAA’s Integrated Noise Model (INM) or an FAA approved equivalent, for developing Sec. A150.101 Noise contours and land usages.

standardized noise exposure maps and pre- (a) To determine the extent of the noise dicting noise impacts. Noise monitoring may impact around an airport, airport propri- be utilized by airport operators for data ac- etors developing noise exposure maps in ac- quisition and data refinement, but is not re- cordance with this part must develop L dn quired by this part for the development of contours. Continuous contours must be de- noise exposure maps or airport noise compat- veloped for YDNL levels of 65, 70, and 75 (ad- ibility programs. Whenever noise monitoring ditional contours may be developed and de- is used, under this part, it should be accom- picted when appropriate). In those areas plished in accordance with Sec. A150.5 of this where YDNL values are 65 YDNL or greater, appendix.

the airport operator shall identify land uses and determine land use compatibility in ac- Sec. A150.3 Noise descriptors.

cordance with the standards and procedures (a) Airport Noise Measurement. The A- of this appendix.

Weighted Sound Level, measured, filtered (b) Table 1 of this appendix describes com- and recorded in accordance with Sec. A150.5 patible land use information for several land of this appendix, must be employed as the uses as a function of YDNL values. The unit for the measurement of single event ranges of YDNL values in Table 1 reflect the noise at airports and in the areas sur- statistical variability for the responses of rounding the airports.

large groups of people to noise. Any par- (b) Airport Noise Exposure. The yearly day- ticular level might not, therefore, accurately night average sound level (YDNL) must be assess an individual’s perception of an actual employed for the analysis and characteriza- noise environment. Compatible or non- tion of multiple aircraft noise events and for compatible land use is determined by com- determining the cumulative exposure of indi- paring the predicted or measured YDNL val- viduals to noise around airports.

ues at a site with the values given. Adjust- ments or modifications of the descriptions of Sec. A150.5 Noise measurement procedures and the land-use categories may be desirable equipment.

after consideration of specific local condi- (a) Sound levels must be measured or ana- tions.

lyzed with equipment having the ‘‘A’’ fre- (c) Compatibility designations in Table 1 quency weighting, filter characteristics, and generally refer to the major use of the site.

the ‘‘slow response’’ characteristics as de- If other uses with greater sensitivity to fined in International Electrotechnical Com- noise are permitted by local government at a mission (IEC) Publication No. 179, entitled site, a determination of compatibility must ‘‘Precision Sound Level Meters’’ as incor- be based on that use which is most adversely porated by reference in part 150 under affected by noise. When appropriate, noise § 150.11. For purposes of this part, the toler- level reduction through incorporation of ances allowed for general purpose, type 2 sound attenuation into the design and con- sound level meters in IEU 179, are accept- struction of a structure may be necessary to able. achieve compatibility.

(b) Noise measurements and documenta- (d) For the purpose of compliance with this tion must be in accordance with accepted part, all land uses are considered to be com- acoustical measurement methodology, such patible with noise levels less than L 65 dB.

dn as those described in American National Local needs or values may dictate further Standards Institute publication ANSI 51.13, delineation based on local requirements or dated 1971 as revised 1979, entitled ‘‘ANS— determinations.

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Federal Aviation Administration, DOT Pt. 150, App. A

(e) Except as provided in (f) below, the (9) Depiction of the required noise contours noise exposure maps must also contain and over a land use map of a sufficient scale and indentify: quality to discern streets and other identifi- (1) Runway locations.

able geographic features.

(2) Flight tracks.

(f) Notwithstanding any other provision of (3) Noise contours of L 65, 70, and 75 dB dn this part, noise exposure maps prepared in resulting from aircraft operations.

connection with studies which were either (4) Outline of the airport boundaries.

Federally funded or Federally approved and (5) Noncompatible land uses within the which commenced before October 1, 1981, are noise contours, including those within the not required to be modified to contain the 65 dB contours. (No land use has to be L dn following items: identified as noncompatible if the self-gen- (1) Flight tracks depicted on the map.

erated noise from that use and/or the ambi- ent noise from other nonaircraft and nonair- (2) Use of ambient noise to determine land port uses is equal to or greater than the use compatibility.

noise from aircraft and airport sources.)

(3) The L 70 dB noise contour and data re- dn (6) Location of noise sensitive public build- lated to L dn 70 dB contour. When determina- ings (such as schools, hospitals, and health tions on land use compatibility using Table care facilities), and properties on or eligible 1 differ between L 65–70 dB and the L 70– dn dn for inclusion in the National Register of His- 75 dB, determinations should either use the toric Places.

more conservative L 70–75 dB column or re- dn (7) Locations of any aircraft noise moni- flect determinations based on local needs toring sites utilized for data acquisition and and values.

refinement procedures.

(4) Estimates of the number of people re- (8) Estimates of the number of people re- siding within the L 65, 70, and 75 dB con- dn 65, 70, and 75 dB con- siding within the L dn tours.

tours.

T ABLE 1—L AND U SE C OMPATIBILITY * W ITH Y EARLY DAY -N IGHT A VERAGE SOUND L EVELS Yearly day-night average sound level (L ) in decibels dn Land use Below 65 65–70 70–75 75–80 80–85 Over 85 R ESIDENTIAL Residential, other than mobile homes and transient lodgings ... Y N(1) N(1) N N N Mobile home parks ..................................................................... Y N N N N N Transient lodgings ...................................................................... Y N(1) N(1) N(1) N N P UBLIC USE Schools ....................................................................................... Y N(1) N(1) N N N Hospitals and nursing homes ..................................................... Y 25 30 N N N Churches, auditoriums, and concert halls .................................. Y 25 30 N N N Governmental services ............................................................... Y Y 25 30 N N Transportation ............................................................................ Y Y Y(2) Y(3) Y(4) Y(4) Parking ....................................................................................... Y Y Y(2) Y(3) Y(4) N C OMMERCIAL U SE Offices, business and professional ............................................ Y Y 25 30 N N Wholesale and retail—building materials, hardware and farm Y Y Y(2) Y(3) Y(4) N equipment.

Retail trade—general ................................................................. Y Y 25 30 N N Utilities ........................................................................................ Y Y Y(2) Y(3) Y(4) N Communication ........................................................................... Y Y 25 30 N N M ANUFACTURING AND P RODUCTION Manufacturing, general ............................................................... Y Y Y(2) Y(3) Y(4) N Photographic and optical ............................................................ Y Y 25 30 N N Agriculture (except livestock) and forestry ................................. Y Y(6) Y(7) Y(8) Y(8) Y(8) Livestock farming and breeding ................................................. Y Y(6) Y(7) N N N Mining and fishing, resource production and extraction ............ Y Y Y Y Y Y R ECREATIONAL Outdoor sports arenas and spectator sports ............................. Y Y(5) Y(5) N N N Outdoor music shells, amphitheaters ......................................... Y N N N N N Nature exhibits and zoos ........................................................... Y Y N N N N Amusements, parks, resorts and camps ................................... Y Y Y N N N Golf courses, riding stables and water recreation ..................... Y Y 25 30 N N Numbers in parentheses refer to notes.

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14 CFR Ch. I (1–1–26 Edition) Pt. 150, App. A

*The designations contained in this table do not constitute a Federal determination that any use of land covered by the pro- gram is acceptable or unacceptable under Federal, State, or local law. The responsibility for determining the acceptable and per- missible land uses and the relationship between specific properties and specific noise contours rests with the local authorities.

FAA determinations under part 150 are not intended to substitute federally determined land uses for those determined to be ap- propriate by local authorities in response to locally determined needs and values in achieving noise compatible land uses.

K EY TO T ABLE 1 SLUCM = Standard Land Use Coding Manual.

Y (Yes) = Land Use and related structures compatible without restrictions.

N (No) = Land Use and related structures are not compatible and should be prohibited.

NLR = Noise Level Reduction (outdoor to indoor) to be achieved through incorporation of noise attenuation into the design and construction of the structure.

25, 30, or 35 = Land use and related structures generally compatible; measures to achieve NLR of 25, 30, or 35 dB must be incorporated into design and construction of structure.

N OTES FOR T ABLE 1 (1) Where the community determines that residential or school uses must be allowed, measures to achieve outdoor to indoor Noise Level Reduction (NLR) of at least 25 dB and 30 dB should be incorporated into building codes and be considered in indi- vidual approvals. Normal residential construction can be expected to provide a NLR of 20 dB, thus, the reduction requirements are often stated as 5, 10 or 15 dB over standard construction and normally assume mechanical ventilation and closed windows year round. However, the use of NLR criteria will not eliminate outdoor noise problems.

(2) Measures to achieve NLR 25 dB must be incorporated into the design and construction of portions of these buildings where the public is received, office areas, noise sensitive areas or where the normal noise level is low.

(3) Measures to achieve NLR of 30 dB must be incorporated into the design and construction of portions of these buildings where the public is received, office areas, noise sensitive areas or where the normal noise level is low.

(4) Measures to achieve NLR 35 dB must be incorporated into the design and construction of portions of these buildings where the public is received, office areas, noise sensitive areas or where the normal level is low.

(5) Land use compatible provided special sound reinforcement systems are installed.

(6) Residential buildings require an NLR of 25.

(7) Residential buildings require an NLR of 30.

(8) Residential buildings not permitted.

Sec. A150.103 Use of computer prediction start-of-roll along with the engine power lev- model. els needed to fly that takeoff profile; these data must reflect the use of noise abatement (a) The airport operator shall acquire the departure procedures and, if applicable, the aviation operations data necessary to de- takeoff weight of the aircraft or some proxy velop noise exposure contours using an FAA for weight such as stage length.

approved methodology or computer program, (5) Existing topographical or airspace re- such as the Integrated Noise Model (INM) for strictions which preclude the utilization of airports or the Heliport Noise Model (HNM) alternative flight tracks.

for heliports. In considering approval of a (6) The government furnished data depict- methodology or computer program, key fac- ing aircraft noise characteristics (if not al- tors include the demonstrated capability to ready a part of the computer program’s produce the required output and the public availability of the program or methodology stored data bank).

to provide interested parties the opportunity (7) Airport elevation and average tempera- to substantiate the results.

ture.

(b) Except as provided in paragraph (c) of (c) For heliports, the map scale required by this section, the following information must paragraph (b)(1) of this section shall not be be obtained for input to the calculation of less than 1 inch to 2,000 feet and shall indi- noise exposure contours: cate heliport boundaries, takeoff and landing (1) A map of the airport and its environs at pads, and typical flight tracks out to at least an adequately detailed scale (not less than 1 4,000 feet horizontally from the landing pad.

inch to 2,000 feet) indicating runway length, Where these flight tracks cannot be deter- alignments, landing thresholds, takeoff mined, obstructions or other limitations on start-of-roll points, airport boundary, and flight tracks in and out of the heliport shall flight tracks out to at least 30,000 feet from be identified within the map areas out to at the end of each runway.

least 4,000 feet horizontally from the landing (2) Airport activity levels and operational pad. For static operation (hover), the heli- data which will indicate, on an annual aver- copter type, the number of daily operations age-daily-basis, the number of aircraft, by based on an annual average, and the dura- type of aircraft, which utilize each flight tion in minutes of the hover operation shall track, in both the standard daytime (0700– be identified. The other information required 2200 hours local) and nighttime (2200–0700 in paragraph (b) shall be furnished in a form hours local) periods for both landings and suitable for input to the HNM or other FAA takeoffs.

approved methodology or computer program.

(3) For landings—glide slopes, glide slope intercept altitudes, and other pertinent in- Sec. A150.105 Identification of public agencies formation needed to establish approach pro- and planning agencies.

files along with the engine power levels needed to fly that approach profile. (a) The airport proprietor shall identify (4) For takeoffs—the flight profile which is each public agency and planning agency the relationship of altitude to distance from whose jurisdiction or responsibility is either VerDate Sep<11>2014 10:01 Aug 27, 2026 Jkt 268049 PO 00000 Frm 00696 Fmt 8010 Sfmt 8002 Y:\SGML\268049.XXX 268049 jgilmore on DSK4WB1RN3PROD with CFR

Federal Aviation Administration, DOT Pt. 150, App. B

wholly or partially within the L 65 dB dn L t)/10 ( T A boundary.

⎡ ⎤

(b) For those agencies identified in (a) that

L log 10 dt (1) = ⎢ ⎥ 10

T 10 ∫

have land use planning and control author-

⎢ ⎥

T

ity, the supporting documentation shall O ⎣ ⎦

identify their geographic areas of jurisdic- where T is the length of the time period, in tion.

seconds, during which the average is taken; L (t) is the instantaneous time varying A- A P ART C—M ATHEMATICAL D ESCRIPTIONS weighted sound level during the time period T.

Sec. A150.201 General.

N OTE : When a noise environment is caused The following mathematical descriptions by a number of identifiable noise events, provide the most precise definition of the such as aircraft flyovers, average sound level yearly day-night average sound level (L dn ), may be conveniently calculated from the the data necessary for its calculation, and sound exposure levels of the individual the methods for computing it.

events occurring within a time period T: Sec. A150.203 Symbols.

L /10 n AEi The following symbols are used in the com-

⎡ ⎤

putation of L ; dn

L log 10 (2) = 10

⎢ ⎥

T 10 ∑

T ⎢ ⎥

Measure (in dB) Symbol

i=1 ⎣ ⎦

where L AEi is the sound exposure level of the Average Sound Level, During Time T ..................... L T Day-Night Average Sound Level (individual day) ... L i-th event, in a series of n events in time pe- dni Yearly Day-Night Average Sound Level ................. L dn riod T, in seconds.

Sound Exposure Level ............................................ L AE N OTE : When T is one hour, L is referred to T as one-hour average sound level.

Sec. A150.205 Mathematical computations.

(b) Day-night average sound level (indi- (a) Average sound level must be computed vidual day) must be computed in accordance in accordance with the following formula: with the following formula:

L ⎡ ⎤ + 10 10 ( ) / t

⎛ ⎞ [ ]

A

10 dt

∫

⎢ ⎥ 1

⎜ ⎟

L log = 10 3 ( )

dn 10 ⎢ ⎥

2400 2200

(t) / 10 ⎜ ⎟

+ 10 10 ( ) / L t

[ ] 86400 L

A A

⎜ ⎟

dt + 10 + ⎢ ⎥ 10 dt

⎝ ⎠ ∫ ∫

2200 0700

⎣ ⎦

Time is in seconds, so the limits shown in where t is one second and L (t) is the time- o A hours and minutes are actually interpreted varying A-weighted sound level in the time in seconds. It is often convenient to compute interval t to t .

1 2 day-night average sound level from the one- The time interval should be sufficiently hour average sound levels obtained during large that it encompasses all the significant successive hours.

sound of a designated event.

(c) Yearly day-night average sound level The requisite integral may be approxi- must be computed in accordance with the mated with sufficient accuracy by inte- EC15SE91.004</MATH> following formula: grating L A (t) over the time interval during which L (t) lies within 10 decibels of its max- A

1 imum value, before and after the maximum

L 10 / dni

L log (4) = 10 10

occurs.

dn 10 ∑

i=1 [Docket 18691, 49 FR 49269, Dec. 18, 1984; 50 FR EC15SE91.003</MATH> 5064, Feb. 6, 1985, as amended by Amdt. 150– where L is the day-night average sound dni 1, 53 FR 8724, Mar. 16, 1988; Amdt. 150–4, 69 FR level for the i-th day out of one year.

57626, Sept. 24, 2004] (d) Sound exposure level must be computed in accordance with the following formula: A PPENDIX B TO P ART 150—N OISE COMPATIBILITY P ROGRAMS t

⎛ ⎞

2 ER10FE03.003</MATH> L t 10 ( ) / A

⎜ ⎟

L = 10 log dt (5) 10 Sec. B150.1 Scope and purpose.

AE 10 ∫

⎜ ⎟

Sec. B150.3 Requirement for noise map.

t

o t

⎝ ⎠

Sec. B150.5 Program standards.

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14 CFR Ch. I (1–1–26 Edition) Pt. 150, App. B

Sec. B150.7 Analysis of program alter- vised maps. Such revisions must be prepared natives. in accordance with the requirements of Sec.

Sec. B150.9 Equivalent programs. A150.101(e) of appendix A and will be accept- ed by FAA in accordance with § 150.35(f).

Sec. B150.1 Scope and purpose.

Sec. B150.5 Program standards.

(a) This appendix prescribes the content and the methods for developing noise com- Based upon the airport noise exposure and patibility programs authorized under this noncompatible land uses identified in the part. Each program must set forth the meas- map, the airport operator shall evaluate the ures which the airport operator (or other several alternative noise control actions and person or agency responsible) has taken, or develop a noise compatibility program proposes to take, for the reduction of exist- which— ing noncompatible land uses and the preven- (a) Reduces existing noncompatible uses tion of the introduction of additional non- and prevents or reduces the probability of compatible land uses within the area covered the establishment of additional noncompat- by the noise exposure map submitted by the ible uses; operator. (b) Does not impose undue burden on inter- (b) The purpose of a noise compatibility state and foreign commerce; program is: (c) Provides for revision in accordance (1) To promote a planning process through with § 150.23 of this part.

(d) Is not unjustly discriminatory.

which the airport operator can examine and (e) Does not derogate safety or adversely analyze the noise impact created by the op- affect the safe and efficient use of airspace.

eration of an airport, as well as the costs and (f) To the extent practicable, meets both benefits associated with various alternative local needs and needs of the national air noise reduction techniques, and the respon- transportation system, considering tradeoffs sible impacted land use control jurisdictions between economic benefits derived from the can examine existing and forecast areas of airport and the noise impact.

noncompatibility and consider actions to re- (g) Can be implemented in a manner con- duce noncompatible uses.

(2) To bring together through public par- sistent with all of the powers and duties of ticipation, agency coordination, and overall the Administrator of FAA.

cooperation, all interested parties with their Sec. B150.7 Analysis of program alternatives.

respective authorities and obligations, there- by facilitating the creation of an agreed (a) Noise control alternatives must be con- upon noise abatement plan especially suited sidered and presented according to the fol- to the individual airport location while at lowing categories: the same time not unduly affecting the na- (1) Noise abatement alternatives for which tional air transportation system.

the airport operator has adequate implemen- (3) To develop comprehensive and tation authority.

implementable noise reduction techniques (2) Noise abatement alternatives for which and land use controls which, to the max- the requisite implementation authority is imum extent feasible, will confine severe air- vested in a local agency or political subdivi- craft YDNL values of L 75 dB or greater to dn sion governing body, or a state agency or po- areas included within the airport boundary litical subdivision governing body.

and will establish and maintain compatible (3) Noise abatement options for which req- land uses in the areas affected by noise be- uisite authority is vested in the FAA or tween the L 65 and 75 dB contours.

dn other Federal agency.

(b) At a minimum, the operator shall ana- Sec. B150.3 Requirement for noise map.

lyze and report on the following alternatives, (a) It is required that a current and com- subject to the constraints that the strategies plete noise exposure map and its supporting are appropriate to the specific airport (for documentation as found in compliance with example, an evaluation of night curfews is the applicable requirements by the FAA, per not appropriate if there are no night flights § 150.21(c) be included in each noise compat- and none are forecast): ibility program: (1) Acquisition of land and interests there- (1) To identify existing and future non- in, including, but not limited to air rights, compatible land uses, based on airport oper- easements, and development rights, to en- ation and off-airport land uses, which have sure the use of property for purposes which generated the need to develop a program. are compatible with airport operations.

(2) To identify changes in noncompatible (2) The construction of barriers and acous- uses to be derived from proposed program tical shielding, including the soundproofing measures. of public buildings.

(b) If the proposed noise compatibility pro- (3) The implementation of a preferential gram would yield maps differing from those runway system.

previously submitted to FAA, the program (4) The use of flight procedures (including shall be accompanied by appropriately re- the modifications of flight tracks) to control VerDate Sep<11>2014 10:01 Aug 27, 2026 Jkt 268049 PO 00000 Frm 00698 Fmt 8010 Sfmt 8002 Y:\SGML\268049.XXX 268049 jgilmore on DSK4WB1RN3PROD with CFR

Federal Aviation Administration, DOT Pt. 151

the operation of aircraft to reduce exposure

PART 151—FEDERAL AID TO

of individuals (or specific noise sensitive

AIRPORTS

areas) to noise in the area around the air- port.

Subpart A—General Requirements (5) The implementation of any restriction on the use of airport by any type or class of Sec.

aircraft based on the noise characteristics of 151.1 Applicability.

those aircraft. Such restrictions may in- 151.3 National Airport Plan.

clude, but are not limited to— 151.5 General policies.

(i) Denial of use of the airport to aircraft 151.7 Grants of funds: General policies.

types or classes which do not meet Federal 151.9 Runway clear zones: General.

noise standards; 151.11 Runway clear zones; requirements.

(ii) Capacity limitations based on the rel- 151.13 Federal-aid Airport Program: Policy ative noisiness of different types of aircraft; affecting landing aid requirements.

(iii) Requirement that aircraft using the 151.15 Federal-aid Airport Program: Policy airport must use noise abatement takeoff or affecting runway or taxiway remarking.

approach procedures previously approved as safe by the FAA; Subpart B—Rules and Procedures for (iv) Landing fees based on FAA certificated Airport Development Projects or estimated noise emission levels or on time of arrival; and 151.21 Procedures: Application; general in- (v) Partial or complete curfews. formation.

(6) Other actions or combinations of ac- 151.23 Procedures: Application; funding in- tions which would have a beneficial noise formation.

control or abatement impact on the public. 151.24 Procedures: Application; information on estimated project costs.

(7) Other actions recommended for analysis 151.25 Procedures: Application; information by the FAA for the specific airport.

as to property interests.

(c) For those alternatives selected for im- 151.26 Procedures: Applications; compatible plementation, the program must identify the land use information; consideration of agency or agencies responsible for such im- local community interest; relocation of plementation, whether those agencies have displaced persons.

agreed to the implementation, and the ap- 151.27 Procedures: Application, plans, speci- proximate schedule agreed upon.

fications, and appraisals.

Sec. B150.9 Equivalent programs. 151.29 Procedures: Offer, amendment, and acceptance.

(a) Notwithstanding any other provision of 151.31 Procedures: Grant agreement.

this part, noise compatibility programs pre- 151.33 Cosponsorship and agency.

pared in connection with studies which were 151.35 Airport development and facilities to either Federally funded or Federally ap- which subparts B and C apply.

proved and commenced before October 1, 151.37 Sponsor eligibility.

1981, are not required to be modified to con- 151.39 Project eligibility.

tain the following items: 151.41 Project costs.

(1) Flight tracks.

151.43 United States share of project costs.

(2) A noise contour of L 70 dB resulting dn 151.45 Performance of construction work: from aircraft operations and data related to General requirements.

the L 70 dB contour. When determinations dn 151.47 Performance of construction work: on land use compatibility using Table 1 of Letting of contracts.

appendix A differ between L 65–70 dB and dn 151.49 Performance of construction work: L 70–75 dB, the determinations should ei- dn Contract requirements.

ther use the more conservative L 70–75 dB dn 151.51 Performance of construction work: column or reflect determinations based on Sponsor force account.

local needs and values.

151.53 Performance of construction work: (3) The categorization of alternatives pur- Labor requirements.

suant to Sec. B150.7(a), although the persons 151.54 Equal employment opportunity re- responsible for implementation of each quirements: Before July 1, 1968.

measure in the program must still be identi- 151.54a Equal employment opportunity re- fied in accordance with § 150.23(e)(8).

quirements: After June 30, 1968.

(4) Use of ambient noise to determine land 151.55 Accounting and audit.

use compatibility.

151.57 Grant payments: General.

(b) Previously prepared noise compat- 151.59 Grant payments: Land acquisition.

ibility program documentation may be sup- 151.61 Grant payments: Partial.

plemented to include these and other pro- 151.63 Grant payments: Semifinal and final.

gram requirements which have not been ex- 151.65 Memoranda and hearings.

cepted. 151.67 Forms.

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