Beechcraft SERVICE INSTRUCTIONS

CESSNA A185F FLOATPLANE · Service Bulletins

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Overview

This document provides essential weight and balance information for the Beechcraft 23 Musketeer. It is designed for pilots and aviation enthusiasts who need to understand the loading limits and weight distribution for safe flight operations. The document outlines the maximum weight capacities, center of gravity limits, and procedures for calculating weight and balance before flight. Proper adherence to these guidelines is crucial for ensuring the aircraft's performance and safety during operations.

Maximum takeoff weight: 2,400 lbs
Center of gravity limits: 34.0 to 38.0 inches from datum
Weight and balance calculations are essential for safe flight operations.

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Type: Service Bulletins
Pages: 20
File size: 1.2 MB
Publisher: www.bonanza.org

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In this document

Weight Limits

The maximum takeoff weight for the Beechcraft 23 Musketeer is 2,400 lbs. This includes the weight of the aircraft, fuel, passengers, and cargo. It is essential to ensure that the total weight does not exceed this limit to maintain safe flight operations.

Center of Gravity (CG) Limits

The center of gravity limits for the Beechcraft 23 Musketeer are between 34.0 inches and 38.0 inches from the datum. Pilots must ensure that the CG is within these limits to ensure stability and control during flight.

Weight and Balance Calculation Procedures

To calculate the weight and balance, pilots should first determine the weight of the aircraft, including all occupants and cargo. Next, they must calculate the moment by multiplying the weight of each item by its arm (distance from the datum). The total weight and total moment are then used to find the CG.

Safety notes

Ensure total weight does not exceed maximum limits.
Verify center of gravity is within specified limits before flight.

Full document text

98-34239 CLASS I Beechcraft SERVICE INSTRUCTIONS 24, 33, 35, 36, 55 SUBJECT: SYNOPSIS OF REVISION: EFFECTIVITY: REASON: COMPLIANCE: DESCRIPTION: - No. 0021-248, -249, Rev. 1 ATA Code 61-10 PROPELLER 2-BLADED AND 3-BLADED PART I, MCCAULEY SERVICE BULLETIN NO. 92, CYLINDER ATTACHMENT IMPROVEMENT (ATTACHED); PART II, MCCAULEY SERVICE BULLETIN NO. 93, COUNTERWEIGHT ATTACHMENT IMPROVEMENT (ATTACHED). Part I Compliance with McCauley Service Bulletin No. 92 (supersedes No. 66) recommended, and Effectivity changed. Part II This portion added to recommend compliance with McCauley Service Bulletin No. 93. Part I - The following aircraft if equipped with a McCauley 2D34C8, 2A36C23, 3A32C76, or 2A36C82 propeller with the cylinder secured to the hub as described in McCauley Service Bulletin No. 92 BEECHCRAFT Musketeer A23-24, serials MA-1 through MA-363; Debonairs/Bonanzas 35-33, 35-A33, 35-B33, 35-C33, E33, and F33, serials CD-1 through CD-1254; Debonairs/Bonanzas 35-C33A, E33A, and F33A, serials CE-1 through CE-345; Bonanzas E33C and F33C, serials CJ-1 through CJ-30; Bonanzas H35, J35, K35, M35, N35, P35, S35, V35, V35TC, V35A, V35A-TC, V35B, and V35B-TC, serials D-4866 through D-9277; and Bonanzas 36 and A36, serials E-1 through E-273. - Part II The following aircraft if equipped with McCauley 2AF36C39, 2AF34C55, or 2AF36C89 propellers with counterweight assemblies as described in McCauley Service Bulletin No. 93 BEECHCRAFT Barons 95-55, 95-A55, 95-B55, and 95-B55A, serials TC-1 through TC-1396; and Barons 95-C55, 95-C55A, D55, D55A, E55, and E55A, serials TE-1 through TE-845. - Part I To comply with McCauley Service Bulletin No. 92. Part II To comply with McCauley Service Bulletin No. 93. Part I As soon as practical after receipt of these Service Instructions, but within the next 100 hours of flight time. Part II When the propeller is submitted for servicing of any kind, regardless of the number of hours the propeller has been in service. Part I Compliance with McCauley Service Bulletin No. 92 on the BEECHCRAFT Musketeers, Debonairs, and Bonanzas specified under Effectivity is recommended. McCauley Service Bulletin No. 92 supersedes Service Bulletin No. 66 dated January 22, 1968. Compliance with McCauley Service Bulletin No. 66 was recommended in Beech Aircraft Corporation Service Instructions No. 0021-241, original, dated February, 1968. - Part II Compliance with McCauley Service Bulletin No. 93 on the BEECHCRAFT Barons specified under Effectivity is recommended. No BECP 268 R971 The operation, care and maintenance of the airplane is the owners responsibility As conditions warrant BEECH AIRCRAFT CORPORATION issues service instructions, recommending modifications and operational procedures to enable the owner to get the maximum utility and safety from his airplane These instructions are available to BEECHCRAFT owners through their BEECHCRAFT Distributor or Dealer An index of Service Instructions is issued periodically When instructions are issued, a temporary recording of the publication should be made in the appropriate index Warranty reimbursement will be considered on specific items so noted in the service instruction provided the airplane is within the first six month period after delivery from the Factory and meets the terms and conditions defined in the published standard BEECHCRAFT warranty Requests for warranty consideration on items so noted must be received within the time limits noted in the service instructions 1 of 2 Service Instructions No. 0021-248, -249, Rev. I MANPOWER: MATERIAL: SPECIAL TOOLS: WEIGHT AND BALANCE: REFERENCES: PUBLICATIONS AFFECTED: ACCOMPLISHMENT INSTRUCTIONS: RECORD COMPLIANCE: As required by the attached McCauley Service Bulletins. As required by the attached McCauley Service Bulletins. Parts are available through the Beech Aircraft Corporation Dealer Organization. As required by the attached McCauley Service Bulletins. As required by the attached McCauley Service Bulletins. - Part I McCauley Service Bulletin No. 92, Cylinder Attachment Improvement, dated April 21, 1971 and all subsequent revisions (if issued). - Part II McCauley Service Bulletin No. 93, Counterweight Attachment Improvement, dated April 21, 1971, Revision 93-1 dated June 30, 1971, Revision 93-2 dated July 28, 1971, and all subsequent revisions (if issued). It is recommended that a note be made in all parts catalog copies to "See Service Instructions No. 0021-248, -249, Rev. I." As required by the attached McCauley Service Bulletins. Upon completion of modification, make an appropriate maintenance record entry, and return a completed compliance card to Beech Aircraft Corporation. 2 of 2 McCauley Industrial Corporation PARKER AVE AT HOWELL Area Code 513 263 3541 45417 BOX 7, ROOSEVELT STA • DAYTON, OHIO Cable Address: McCauley DOA APPROVED SERVICE BULLETIN No. 92 APRIL 21, 1971 NECESSARY AND REQUIRED ACTION (PRIOR TO OVERHAUL This Bulletin Supersedes Service Bulletin No. 66 Dated 22 January 1968. TO: Affected Airframe Manufacturers (Aero Commander, Beech, Bellanca, Cessna, Fletcher, Lockheed, Macchi, Navion, and Wren), FAA Approved Propeller Repair Stations, and McCauley Distributors. SUBJECT: Cylinder Attachment Improvement PROPELLER MODELS AFFECTED: Any Two or Three-Bladed Constant Speed (Non-Feathering) Model Listed In Table I That Has Cylinder Attached To Hub With Only (8) Screws And Washers, As Shown On Figure I-A. NOTE Any propeller that has cylinder attached with (8) or (14) screws and tubes and a ring as shown on Figure I-B and II-B or with (14) screws and washers as shown in Figure II-A is not affected by this bulletin. AIRCRAFT MODELS AFFECTED: Any Single-Engine Tractor Aircraft With Affected Propeller Installed. Table II Is A Listing Of Aircraft Models Where These May Be Found. CONDITION AND CORRECTION: There have been several recent incidents where the screws in the cylinder attachment with (8) short screws have failed, which permitted the cylinder

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to come off and caused a loss of engine oil. This experience has dictated the need for an improvement of the strength of the attachment. The length of the screw has been increased to allow the part to yield over a much longer length so as to significantly reduce stress concentrations. Affected propellers in service that have cylinders attached as shown in Fig. I-A shall have attachment changed as shown in Figure I-B (8 long screws and tubes plus ring). This work can be accomplished by an A & P mechanic without removing propeller from aircraft. 1. Remove spinner shell in accordance with aircraft manufacturer's instructions. 2. Remove the (8) screws and washers that attach cylinder as shown in Figure I-A. It is not necessary to remove cylinder from hub. 3. Attach cylinder as shown in Figure I-B. Install screws with 30 to 36 pound-inches torque use a torque wrench. Lockwire screws with .032 inch diameter corrosion resistant steel. - NOTE Sufficient parts for one propeller, excepting lockwire, are available from McCauley in a kit, part number PL-4388 (contains (8) A-1635-70 screws and B-4354 tubes and a B-4342 ring). 4. Replace spinner shell. COMPLIANCE: Accomplish corrective action within the next 100 hours of service, preferably at next 100 hour aircraft inspection. An entry indicating bulletin compliance shall be made in aircraft and engine/propeller log books. (Page 1 of 4) S.B. No. 92 Page (2) of (4) DETERMINATION OF AFFECTED PROPELLERS: The propeller hub has a model designation number and serial number impression stamped on side of hub of two-blade models, and on the outer diameter of front (cylinder end) cylind ical boss of three-blade models (located between blade sockets). The hub model and serial number should also be listed in the engine/ propeller log book, but the hub model may be incomplete and not include change letter (example: D2A34C58-B may be listed as D2A34C58). Table I indicates the specific propeller hub models that are affected and the hub serial numbers which may be affected, while Table II indicates the aircraft on which they may be found. If the aircraft records indicate that an affected type propeller model is installed and the serial number is in the affected range, the spinner shell should be removed to see if cylinder attachment is as shown in Figure I-A and, if so, corrective action accomplished. NOTE: This bulletin does not supersede the overhaul action requirements of Service Bulletin No. 87 dated 6 November 1970 or Revision 87-1 dated 21, April 1971. TABLE I HUB MODELS THAT ARE AFFECTED BY SERVICE BULLETIN NO. 92 2D34C8 2D34C8-A C2A36C32 D2A34C58-B 3A32C76-S D2A34C78-K C2A36C32-A D2A34C58-J 3A32C76-T D2A34C78-L 2D34C8-J C2A36C32-D D2A34C58-K 3A32C76-AD D2A34C78-M 2D34C8-K D2A36C33 D2A34C58-L 3A32C76-AS D3A32C79 2D34C8-M D2A36C33-D D2A34C58-M 3A32C76-AT D3A32C79-A 2A36C23-C D2A36C45 2A34066 3A32C76-FD D3A32C79-B 2A36C23-CD D2A36C45-D 2A34066-A 3A32C76-FS D3A32C79-F 2A36C23-CH D2A34C49 2A34C66-B 3A32C76-FT D3A32C79-J 2A36C23-CJ D2A34C49-A 2A34C66-C 3A32076-JD D3A32C79-K 2A36C23-CP D2A34C49-B 2A34C66-J 3A32076-JS 2A36C82-T 2A36C23-CS D2A34C49-J 2A34C66-K 3A32C76-JT 2A36C82-DT 2A36C23-DD D2A34C49-K 2A34C66-L 3A32C76-KD D3A32C88 2A36C23-DH D2A34C49-L 2A34C66-M 3A32C76-KS D3A32C88-A 2A36C23-DJ D2A34C49-M E2A34C70 3A32C76-KT D3A32C88-F 2A36C23-DP 2A34C50 E2A34C70-A D3A32C77 D3A32C88-J 2A36C29 2A34C50-A E2A34C70-J D3A32C77-A D3A32C88-K 2A36C29-A 2A34C50-B E2A34C70-K D3A32C77-F D3A32C90 2A36C29-D 2A34C50-J E2A34C70-M D2A32C77-J D3A32C90-A B2A36C31 2A34C50-K E2A34C73 D3A32C77-K D3A32C90-B B2A36C31-A 2A34C50-L E2A34C73-A D2A34C78 D3A32C90-C B2A36C31-D 2A34C50-M E2A34C73-J D2A34C78-A D3A32C90-F D2A36C31-A D2A34C58 E2A34C73-K D2A34C78-B D2A36C31-D D2A34C58-A E2A34073-M D2A34C78-J D3A32C90-J D3A32C90-K 3A32C76-D *HUB SERIAL NUMBERS THAT MAY BE AFFECTED BY SERVICE BULLETIN NO. 92 All 65XXXX, 66xxxx, 67xxxx, 68XXXX, 69xXXX, and 70XXXX serial numbers up to and including 701057 except for the following serial numbers which are excluded: 700492 700500 thru 700558 700561 thru 700568 700570 thru 700594 700596 thru 701050 701053 *NOTE: Hub serial numbers will be encountered with five or six digits. The first two digits indicate the year in which hub was produced, while remaining digits indicate the number of the hub fabricated in that year. Example S/N 651323 indicates hub was produced in 1965 and was the 1323rd one made in 1965. AFFECTED PROPELLERS 2D34C8/78FB 2A36C23/84B 2A36C29/90M B2A36C31/90M (and) D2A36C31/90M C2A36C32/90M D2A36C33/90M D2A36C45/90M D2A34C49/90A 2A34C50/90A D2A34C58/90AT 2A34066/90AT E2A34C70/90AT E2A34C73/90AT 3A32C76/82NB D3A32C77/82NK D2A34C78/90AT D3A32C79/82NK 2A36C82/84B D3A32C88/82NC D3A32C90/82NC McCauley S.B. 92, Page (3) of (4) Beech A-23-24 TABLE II AIRCRAFT MODELS ON WHICH THEY MAY BE INSTALLED Beech 35-33, -A33, -B33, -C33, -C33A, -E33, E33A, -E33C, -F33, -F33A, and F33C%; H35, J35, K35,M35, N35, P35, S35, V35, V35A and V35B; 36 and A36. Cessna 180 series, 182 and 182A thru G. Bellanca 14-19-33B Fletcher FU24; Lockheed 402-2; Meyers (Aero Commander) 200-A thru C3B & Navion F. Navion E. Bellanca 14-19-3%; Cessna 185, 185A thru D, 205, 205A, 210, 210A thru C3B Fletcher FU24; Lockheed 402-2%; Macchi AL60%;B Meyers (Aero Commander) 200-A thru C; & Navion B, F, G & H. Fletcher FU24. • Cessna 185, 185A thru E, 205, 205A, 210 & 210A thru C Cessna 180 series, 182, 182A thru M, 188 & 188A%; and Wren 460. Aero Commander or Meyers 200 & 200D%;B Cessna 185, 185A thru E, A185E, A188, A188A, 205, 205A, 206, P206 & TP206A Float Plane, P206A, U206 series, TU206 series Float Plane%3 207 series, 210, 210A thru D%3B & Navion A, B, D, E, F, & G. Cessna 180 series, 182, 182A thru M, 188, 188A & Wren 460. Cessna TP206 and T210 series Landplane. Cessna P206 series Landplane, 210E & subsequent. Beech 35-C33, -C33A, -E33A & -F33A; S35, V35, V35A & V35B%; S35TC, V35TC, V35A-TC & V35B-TC%; 36 & A36. Cessna P206A, TP206A, 210F, and T210F Landplanes. Cessna TU 206 & T207 series Landplane. Cessna P206A, U206A and TU206 series Landplanes. Beech S35TC, V35TC, V35A-TC, and V35B-TC. Cessna P206 & TP206 series Landplanes, 210F & subsequent and T210F & subsequent. Cessna P206A Landplane, U206 series, TU206 series, 207 series & T207 series%; and Navion A, B, D, E, F, G & H. -FILISTER OR SOCKET HEAD CAP SCREW & WASHER 8 EA. USED A McCauley S. B.92 Page 4 of 4 CYLINDER ATTACHMENTS A-1635-70 SCREW 8 REQ'D TORQUE 30-36LB.IN. UN ACCEPTABLE ATTACHMENT REQUIRING CORRECTION -B-4354 TUBE 8 REQ'D A-1635-65 SCREW - A-1638-9 WASHER 14EA.REQ'D TORQUE 30-36LBIN A FIGURE I ACCEPTABLE ATTACHMENT INTERIM PRODUCTION B -B-4342 RING ACCEPTABLE ATTACHMENT FOR FIELD CORRECTION A-1635-70 SCREW 14 REQD, TORQUE 30-36LB.IN. -B-4354 TUBE 14 REQ'D B -B-4342 RING FIGURE II ACCEPTABLE ATTACHMENT CURRENT PRODUCTION McCauley Industrial Corporation PARKER AVE AT HOWELL Area Code 513 263 3541 BOX 7, ROOSEVELT STA • DAYTON, OHIO 45417 Cable Address: McCauley DOA APPROVED SERVICE BULLETIN NO. 93 APRIL 21, 1971 NECESSARY AND REQUIRED ACTION TO: Beech Aircraft Corporation, Cessna Aircraft Company, FAA Approved Propeller Repair Stations, and McCauley Distributors. SUBJECT: Counterweight Attachment Improvement PROPELLER MODEL AFFECTED: Two-Blade Full Feathering Propellers Model 2AF36C39, D2AF36C48, D2AF34C52, 2AF34C55 and 2AF36C89 Which Incorporate Counterweight Assemblies That Have A-3372 Brackets Across The Counterweight Arms And Have Brackets And Weights Attached With (4) Socket Head Cap Screws. AIRCRAFT MODEL AFFECTED: Beech 95-55, -A55, and B55%; And Cessna 310C Through I. CONDITION: Several counterweight or attachment failures have been experienced which dictates a need for improvement. CORRECTION: The screws that attach brackets and weights to counterweight arm are to be replaced by bolts, which will pass completely through from one side of weights, brackets and arm to the other side. This change will effect the type and amount of weights installed. Table I-A attached is a listing of parts required for the improved attachment and indicates the quantity required for each propeller assembly. Figures No. 1-3 attached indicate how parts are installed with respect to each other. For reference, Table I-B attached is a listing of previous attachment parts which have now been superseded. COMPLIANCE: Accomplish corrective action whenever propeller is submitted for servicing of any kind (overhaul, repair, reconditioning, etc.), regardless of the number of hours of service. PROCEDURE: If propeller is being serviced for a condition that does not require re-balance, note the type, number and location of balance weights to permit reinstalla- tion in same location. Remove counterweights and attaching parts (see Table I-A). 2. Use a drill press (do not use hand held drill) to accomplish the following: a. Open up the two #2310-32 threaded holes in each half of the D-1945 or D-3156 counterweights to .307-.317 inches diameter through. b. Open up the two .200-.215 inch diameter holes in the A-2881-1 or A-2331 weights to .260-.275 through, which will convert them to an A-3331-2 or A-3330 part number respectively. - c. Open up the four .200 .215 inch diameter holes in the A-3372 brackets to .276- .291 through, which will convert them to an A-3372-A part number. 3. Deburr all drilled holes. Clean (strip) and cadmium plate the modified counterweights, weights and brackets. 4. Refer to Table I-A and note that A-3331-2 weights required for all models and A-3330 McCauley S.B. 93 Page 2 of 6 weights for 2AF34C55 and 2AF36C89 are obtained by reworking A-2881-1 and A-2331. However, new A-3330 weights must be obtained for D2AF36C48 and D2AF34C52 since no A-2331 weights were previously used. New A-2513-55, -56 and -57 bolts must be obtained for all models. 5. Disassemble and reassemble propeller as required by Service Manual No. 630901 to accomplish overhaul or required servicing. Install counterweight onto ferrule as required by manual (Para. 2-321, Chap. I, Sect. III, Pgs. 35 & 36). Assemble modified counterweight parts as follows (see Table I-A and Figs. No. 1, 2 and 3). a. Install 2 brackets (A-3372-A) on each pair of counterweight halves, so that they overlap at sides, one from top and one from below on opposite side, with bracket holes aligned with through-holes in counterweight arms. Full-width chamfered end of bracket MUST be at very end of arm, farthest from hub. Locate weights (A-3330 and A-3331-2) on each side of bracket and attach with bolts (A-2513-55, 56 or 57), washers (A-1638-15) and nuts (A-1639-14). Center weights on side of arm and hold in place until tightening of bolts is sufficient to prevent movement. bolts with 75 to 85 pound-inches torque. CAUTION Attach brackets and weights with two A-1638-15 washers under the head of each A-2513-55, 56 or 57 bolt, but if tolerance build up of parts does not permit end of bolt to protrude past the end of nut by at least 1/32 inch, remove a washer and repeat procedure until it does. Tighten b. Recheck torque of counterweight-to-ferrule attaching bolts (A-2513-1 and -2) after weights and brackets have been attached and their attachment bolts are torqued. If re-tightening is required, recheck torque of weight and bracket bolts. Repeat procedure until all bolts are properly torqued. 6. Should it be necessary to replace a D-1945 or D-3156 counterweight, obtain replace- ment as specified in Service Bulletin No. 83. NEW AND OBSOLETE PARTS: 1. A-3331-2 and A-3330 weights, A-1638-15 washers and A-1639–14 nuts have been used previously and should be a stock item. 2. A-2513-55, -56, and -57 bolts are new items and should be promptly ordered. 3. A-2881-1 weights and A-3372 brackets are now obsolete and no longer available. Those in stock may be reworked into A-3331-2 weights or A-3372-A brackets, respectively. A-3372-A brackets are now available. 4. A-2331 weights are still required for other models and are available. 5. A-1635-52 and -61 screws are now obsolete and no longer available. NOTE: The service manuals specify that all steel parts shall be inspected by magnetic particle process, Specification MIL-I-6868; all aluminum alloy parts by fluorescent penetrant method, Specification MIL-1-6866. It is necessary to reiterate this fact and note that the counterweights and attaching parts must be magnetic particle inspected whenever propeller is overhauled. MCCAULEY INDUSTRIAL CORPORATION McCauley S.B. 93 Page (3) of (6) TABLE I-A IMPROVED COUNTERWEIGHT ATTACHMENT PARTS 2AF36C39 *D-1945 (2) Attachment Parts Counterwt. Propeller Model D2AF34C52 D2AF36C48 D-1945 (2) * D-3156 (2) Counterweight-To-Ferrule Attaching Parts 2AF34C55 2AF36C89 D-3156 (2) D-1945 (2) - Reference - Same As Used Previously Bolt (5/16") A-2513-1 (2) A-2513-1 (2) A-2513-1 (2) A-2513-1 (2) A-2513-1 (2) Bolt (5/16") Spacer Nut (5/16") A-2513-2 (2) A-1944 (8) A-1639-6 (4) A-2513-2 (2) A-2513-2 (2) A-2513-2 (2) A-2513-2 (2) A-1944 (8) A-1944 (8) A-1944 (8) A-1944 (8) A-1639-6 (4) A-1639-6 (4) A-1639-6 (4) A-1639-6 (4) Weight Weight Bracket ** A-3331-2(12) A-3331-2 (8) A-3331-2 (8) A-3331-2 (4) A-3331-2 (4) ## A-3372-A (4) # A-3330 (4) A-3372-A (4) A-3330 (4) A-3330 (4) A-3330 (4) A-3372-A (4) A-3372-A (4) A-3372-A (4) A-2513-56(4) A-1638-15 Weight & Bracket-To-Counterweight Attaching Parts Bolt (1/4") Washer (1/4") A-2513-57(4) A-2513-57(4) A-1638-15 (as req'd) A-1639-14(4) (as req'd) A-1639-14(4) A-1638-15 (as req'd) A-1639-14(4) Nut (1/4") A-2513-55(4) A-1638-15 (as req'd) A-1639-14(4) A-2513-55(4) A-1638-15 (as req'd) A-1639-14(4) *D-1945 or D-3156 counterweight modified in accordance with this bulletin **A-3331-2 is 3/16" thick and has .260-.275" diameter holes. #A-3330 is 1/16" thick and has .260-.275" diameter holes. ##A-3372-A is 1/16" thick and has .276-.291 diameter holes. TABLE 2-A PREVIOUS (OBSOLETE) COUNTERWEIGHT ATTACHMENT PARTS Counterwt. D-1945 (2) D-1945 (2) D-3156 (2) D-3156 (2) D-1945 (2) Weight * A-2881-1(12) A-2881-1 (8) A-2881-1 (8) Weight A-2881-1 (4) ** A-2331 (4) Bracket #A-3372 (4) A-3372 (4) A-3372 (4) A-3372 (4) A-2881-1 (4) A-2331 (4) A-3372 (4) Weight & Bracket-To-Counterweight Attaching Parts Screw (#10) A-1635-52(8) A-1635-52(8) A-1635-52(8) A-1635-61 (8) A-1635-61 (8 *A-2881-1 is 3/16" thick and has .200-.215" diameter holes for hole size. **A-2331 is 1/16" thick and has .200 - .215 diameter holes same asA-3331-2 except - same as A-3330 except for hole size. #A-3372 is 1/16" thick and has 200-.215 diameter holes - same as A-3372-A except for hole size. 039 COUNTERWEIGHT CONFIGURATION ASSEMBLE PARTS AS SHOWN. REBALANCE PROPELLER IN LATCH POSITION SHOWN. A-1635-33 (2 REQ'D PER COUNTERWEIGHT) USE A-1664-1 ON THREADS. TORQUE 25 TO 30 LB. IN. AFTER A-1639-6 HAVE BEEN TORQUED. A-1639-6 (2 REQ'D PER COUNTERWEIGHT) ALIGN GAPS ON COUNTERWEIGHT WITH MARK ON FERRULE AND TORQUE 27 To 30 LB.FT. D-1945-2 COUNTERWEIGHT HALF D-1945-1 COUNTERWEIGHT HALF ☐ MATCHED SET A-1639-14 TORQUE 75 TO 85 LB.IN. AFTER A-1639-6 HAVE BEEN TORQUED 2 REQ'D PER COUNTERWEIGHT A-1638-15 (AS REQ`D) TO SUIT 1/32" MIN. BOLT PROJECTION THRU NUT " A-3372-A (2 REQ'D PER COUNTERWEIGHT) CHAMFERED END ON END OF CTWT, ARM. A-2513-2 A-2513-1 A-1944 (4 REQ'D PER COUNTERWEIGHT A-2513-56 2 REQ'D PER COUNTERWEIGHT A-3331-2 (3/16" THICK) 6 REQ'D PER COUNTERWEIGHT FIGURE NO. 1 McCauley S.B. 93 Page (4) of (6) A-2513-2 C48 & C52 COUNTERWEIGHT CONFIGURATION ASSEMBLE PARTS AS SHOWN. REBALANCE PROPELLER IN LATCH POSITION SHOWN. A-1635-33 (2 REQ'D PER COUNTERWEIGHT) USE A-1664-I ON THREADS. TORQUE 25 TO 30 LB. IN. AFTER A-1639-6 HAVE BEEN TORQUED. A-1639-6 (2 REQ'D PER COUNTERWEIGHT) ALIGN GAPS ON COUNTERWEIGHT WITH MARK ON FERRULE AND TORQUE 27 to 30 LB.FT. D-1945-2(C48) OR D-3156-2((52) CTWT HALF. D-1945-1(C48) OR D-3156-1 (C52) CTWT.HALF ☐ MATCHED SET A-1639-14 TORQUE 75 to 85 LB.IN. AFTER A-1639-6 HAVE BEEN TORQUED 2 REQ'D PER COUNTERWEIGHT ☑ A-1638-15 (AS REQ'D) TO SUIT 1/32" MIN. BOLT PROJECTION THRU NUT A-3372-A (2 REQ'D PER COUNTERWEIGHT) CHAMFERED END ON END OF CTWT. ARM. A-3330 (1/16" THICK) 2 REQ'D PER COUNTERWEIGHT A-2513-57 2 REQ'D PER COUNTERWEIGHT A-3331-2 ( 3/16" THICK) 4 REQ'D PER COUNTERWEIGHT Page (5) of (6) McCauley S.B. 93 A-1944 (4 REG'D PER COUNTERWEIGHT) A-2513-1 FIGURE NO 2 8-2513-2 C55 & C89 COUNTERWEIGHT CONFIGURATION ASSEMBLE PARTS AS SHOWN. REBALANCE PROPELLER IN LATCH POSITION SHOWN. A-1635-33 (2 REQ'D PER COUNTERWEIGHT) USE A-1664-1 ON THREADS. TORQUE 25 TO 30 LB. IN. AFTER A-1639-6 HAVE BEEN TORQUED. A-1639-6 (2 REQ'D PER COUNTERWEIGHT) ALIGN GAPS ON COUNTERWEIGHT WITH MARK ON FERRULE AND TORQUE 27 To 30 LB.FT. D-1945-2 (C89) OR D-3156-2(C55) CTWT.HALF ☐ D-1945-1 ((89) OR D-3156-2(55) CTWT. HALF MATCHED SET A-1639-14 TORQUE 75TO 85 LB.IN. AFTER A-1639-6 HAVE BEEN TORQUED 2 REQ'D PER COUNTERWEIGHT A-1638-15 (AS REQ'D) TO SUIT V32" MIN. BOLT PROJECTION THRU NUT A-3372-A (2 REQ'D PER COUNTERWEIGHT CHAMFERED END ON END OF CTWT, ARM. A-3330 (1/16" THICK 2 REG'D PER COUNTERWEIGHT A-2513-55 4 2 REQ'D PER COUNTERWEIGHT A-3331-2 (3/16" THICK) 2 REQ'D PER COUNTERWEIGHT Page (6) of (6) McCauley S.B. 93 A-1944 (4 REQ'D PER COUNTERWEIGHT) A-2513-1 Figure No. 3 McCauley Industrial Corporation PARKER AVE AT HOWELL Area Code 513 263 3541 BOX 7. ROOSEVELT STA • DAYTON, OHIO 45417 Cable Address: McCauley SERVICE BULLETIN NO. 93-1 DOA APPROVED 30 JUNE 1971 NECESSARY AND REQUIRED ACTION (This Bulletin Replaces Service Bulletin No. 56 Dated 16 March 1964) TO: Beech Aircraft Corporation, Cessna Aircraft Company, FAA Approved Propeller Repair Stations, and McCauley Distributors. SUBJECT: Revision to Service Bulletin No. 93 dated 21 April 1971. CONDITION: 1. It was not previously indicated that Service Bulletin No. 56 dated 16 March 1964 was to be replaced. This bulletin covered 2AF34C55 model series. 2. Previously it was assumed that all 2AF34C55 model propellers would have been serviced for Bulletin No. 56 compliance, which should be the case but may not be. Further, the Table 2-A listed only one previous (obsolete) configuration of D-3156 counterweights, weights and brackets, and attaching parts for the 2AF34C55 propellers. 3. Several stations have inquired about the necessity of magnetic particle process inspection for counterweights and A-2513-1 and -2 attaching bolts. This is required. Some failures were undoubtedly caused by the omission of such inspection in the past. 4. Information was not included earlier to indicate the previous bulletins that will require compliance at the same time as Service Bulletin No. 93. CORRECTION: 1. For reference, mark file copies of Bulletin 56 to indicate replacement by Bulletin 93. The PL-3376 Counterweight Improvement Kit previously supplied for Bulletin 56 is obsolete and no longer available. Obtain parts listed in Table I-A, Bull- etin 93. All 2AF34C55 models must have bolts which pass completely through from one side of weights or weight/bracket combinations and counterweight arm to the other side. 2. The following table shows the previous (now obsolete) weight and bracket configurations for the 2AF34C55 propellers that may be encountered and which must be changed to config- uration shown in Table I-A. 2AF34C55 Propeller With D-3156 Counterweight Original Configuration Weights & Brackets A-2881-1 Weight (12) A-2331 Weight A-3372 Bracket ( 4 ) None Weights And Brackets-To-Counterweights Attaching Parts A-1635-29 Screw A-1635-52 Screw A-1635-61 Screw ( 8) None None 1st Production Change & Bulletin No. 56 Change 2nd Production Change * (8) None (4) (4) (4) (4) None None (8) None None (8) * The 2nd production change is that listed in Table 2-A of subject bulletin and in Table II of Service Bulletin No. 83. WORLD S LARGEST MANUFACTURER OF METAL PROPELLERS FOR BUSINESS AND PLEASURE AIRCRAFT McCauley S.B. 93-1 Page 2 of 2 3. Use a pen to add a numeral "1" for first paragraph under "PROCEDURE" in subject bulletin and change last sentence in first step to read as follows: "Remove counter- weights and associated parts - inspect counterweights and A-2513-1 and -2 attaching bolts by magnetic particle process (Spec. MIL-I-6868) and reject any cracked parts replace A-1639-6 nuts, do not reuse." 4. NOTE: When propellers are received for any servicing that requires disassembly, overhaul, repair, or for compliance with Bulletin No. 93, compliance with previous bulletins will also be required as follows: a. Service Bulletin No. 88 which affects D2AF34C52 and 2AF34C55 propellers and requires hub replacement or rework. b. Service Bulletin No. 84 which affects 2AF34C55 propellers and requires a change in the cylinder attachment screw. c. Service Bulletin No. 83 may affect all the models that are affected by Bulletin No. 93 (C39, C48, C52, C55 and C89) if it is necessary to replace counterweights and repair station does not have any old style in stock. d. Service Bulletin No. 80 which affects all models (C39, C48, C52, C55 and C89) and requires the use of a specific type sealant and assembly operations at blade-ferrule and hub-lock ring-retention nut junctions. e. Service Bulletin No. 62 which affects all models (C39, C48, C52, C55 and C89) and requires a blade actuating pin change. MCCAULEY INDUSTRIAL CORPORATION McCauley Industrial Corporation PARKER AVE AT HOWELL • BOX 7, ROOSEVELT STA • DAYTON, OHIO 45417 Cable Address: McCauley Area Code 513 263-3541 SERVICE BULLETIN NO. 93-2 DOA APPROVED 28 JULY 1971 TO: NECESSARY AND REQUIRED ACTION Beech Aircraft Corporation, Cessna Aircraft Company, FAA Approved Propeller Repair Stations, and McCauley Distributors. SUBJECT: Supplimental Information Applicable to Service Bulletin No. 93 dated 21 April 1971, and Service Bulletin 93-1 dated 30 June 1971. CONDITION: An FAA Airworthiness Directive will be issued on the 2AF34C55 Propeller, which is covered in Service Bulletin No. 93. It will require the counterweight attachment improvement to be accomplished within a specified number of service hours. The general word description for the affected propeller models was sufficient for normal bulletin compliance, but a specific model and serial number affectivity, as shown in Tables III and IV of this revision, is preferred for compliance with the Airworthiness Directive. CORRECTION: (1) At the end of the paragraph and under the caption of Propeller Model Affected on Page 1 of Service Bulletin 93 dated April 21, 1971, use a pen and add the words "See Table III and IV on Service Bulletin 93-2 for specific 2AF34C55 Models and Serial Number Affectivity". (2) The tables indicating propeller model and serial number affectivity are as follows: 2AF34C55 2AF34C55-A 2AF34C55-B 2AF34C55-C 2AF34C55-D 2AF34C55-E *NOTE: TABLE III 2AF34C55 MODELS AFFECTED 2AF34C55-F 2AF34C55-G 2AF34C55-H 2AF34C55-HM 2AF34C55-K 2AF34C55-KM 2AF34C55-L 2AF34C55-LM 2AF34C55-M 2AF34C55-J 2AF34C55-JM * 2AF34C55-N Only Not all 2AF34C55N Propeller Models are affected. new detail hubs shipped for spares and assembled in the field with old type counterweights are involved. Excepted serial numbers shown in Table IV are new propeller assemblies which contain D-4170 counterweights and are NOT affected by this bulletin. Continued on Page 2 WORLD S LARGEST MANUFACTURER OF METAL PROPELLERS FOR BUSINESS AND PLEASURE AIRCRAFT

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