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Oxygen System AFM Supplement

MOONEY M20J · Systems Description

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Overview

This document is an Airplane Flight Manual Supplement for the Mooney M20J, M20K, M20L, and M20S models, specifically detailing the oxygen system. It provides information on the operation, limitations, and safety procedures related to the oxygen system installed in these aircraft.

  • The oxygen system is designed for use at altitudes above 12,500 feet.
  • Oxygen cylinder capacities are 77.1 or 115.7 cubic feet.
  • The system includes four oxygen outlets: three for passengers and one for the pilot.
  • Oxygen flow is automatically adjusted based on altitude.
  • Proper filling pressures for the oxygen cylinder vary with ambient temperature.
  • Greasy substances can ignite in oxygen environments, posing a fire hazard.
  • Oxygen should not be used below 100 PSI to avoid contamination.
  • No smoking is allowed when oxygen is in use.

Document

Source

Originally published by mooney201.de. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.

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Document details

Type
·
Systems Description
Year
·
1985
File size
·
366 KB
Publisher
·
mooney201.de
Language
·
en

Specifications & performance

Extracted from this document.

Specifications

Oxygen pressure psi
·
1850
Oxygen cylinder capacity cubic feet
·
77.1 or 115.7
About this document
What is the Oxygen System AFM Supplement?

The Oxygen System AFM Supplement is a systems description for the MOONEY M20J, dated 1985.

Where does the Oxygen System AFM Supplement come from?

This copy of the Oxygen System AFM Supplement was originally published by mooney201.de and is hosted on Sprinkle as a free, searchable reference copy.

What year was the Oxygen System AFM Supplement published?

The Oxygen System AFM Supplement — the MOONEY M20J systems description on file — is dated 1985.

Documentation completeness
5/7

Most owners only have the POH. Here's the essential set for the MOONEY M20J.

More MOONEY M20Jmanuals & documents

In this document

Oxygen System Overview

The oxygen system includes a pilot's oxygen panel with a pressure gauge and control knob, allowing the pilot to manage oxygen flow. It features four outlets for oxygen delivery.

Limitations

There are no changes to the airplane limitations when oxygen equipment is installed. Only aviators oxygen should be used, and smoking is prohibited when oxygen is in use.

Normal Procedures

Prior to flight, check oxygen supply and ensure masks are accessible. Follow specific steps to use the oxygen system, including adjusting the mask and monitoring the flow indicator.

Oxygen Duration Chart

The document includes a chart to determine the usable duration of oxygen based on pressure and altitude, allowing for flight planning.

Safety Tips

No changes to safety procedures are noted when oxygen equipment is installed, but proper monitoring of oxygen flow is critical.

Safety notes

  • Oil, grease, or other lubricants in contact with oxygen create a serious fire hazard.
  • Greasy lipsticks and waxed mustaches can ignite spontaneously inside oxygen masks.
  • Proper oxygen flow is critical to safety, especially above 20,000 feet.
  • No smoking should be allowed in the airplane while oxygen is being used.
  • The oxygen cylinder should not be run down to less than 100 PSI.

Full document text

AFM SUPPLEMENT MOONEY AIRCRAFT CORPORATION M20J, M20K, M20L, M20S OXYGEN SYSTEM MOONEY AIRCIIAFT CORPORATION LOUIS SCHREINER FIELD KERRVILLE, TEXAS 78028 FAA APPROVED AIRPLANE FLIGHT MANUAL SUPPLEMENT FOR MOONEY MODELS M20J SIN 24-0001 THRU 24-TBA M20K SIN 25-0001 THRU 25-TBA M2OL SIN 26-0001 THRU 26-TBA M20S SIN 30-0001 THRU 30-TBA WITH OXYGEN SYSTEM (77.1 or 115.7 cu.ft. Systems) Model No. Reg. No. Ser. No. This sup lement must be attached to the ap licable Airplane Flight Manual when the Ox en S s- c!' tern has geen installed by Mooney Aircraft orporation er Drawing 870007 or 870029. R e in&- IR mation contained herein supplements or supersedes t e basic manual only in-those areas listed herein. For limitations procedures and performance ~nformatronnot contamed In the supplement, consult the basic ~ i r ~ i a n e Flight Manual. FAA APPROVED: --.hiLz Don P. Watson, manager Aircraft Certification Division FEDERAL AVIATION ADMINISTRATION Southwest Region, Fort Worth, TX DATE: 12-16-85 REV. A 5-9-86 REV. B 12-4-86 REV. C 9-29-87 REV. D 5-26-88 REV. E 8-15-00 Page 1 of 8 FAA APPROVED MOONEY AIRCRAFT CORPORATION OXYGEN SYSTEM AFM SUPPLEMENT M20J, M20K, M20L, M20S * L.B. ANDRIESEN, MANAGER, AIRCRAFT CERTIFICATION DIVISION Page 2 of 8 FAA APPROVED AFM SUPPLEMENT MOONEY AIRCRAFT CORPORATION MZOJ, M20K, MZOL, M20S OXYGEN SYSTEM A ilot's oxygen panel on the side wall near the pilot's arm rest contains a cylinder pressure gage (ekective~ a quantit gage - see Fig. 2 or 3) and a control knob which is mechanically connected to the shuto#valve at t i e cylinder. The sup I of oxygen can thus be shut off.from !he cock it when f not required. When the control is in the 84position sufficient oxygen flow is available at he max- imum airplane operating altitude (see Section II Limitations) while at lower altitudes the reducin ability, without requiring any action by the pilot. (See Fig. 2 or F i g 3). P valve automatically economizes'the flow to conserve oxygen for Ion er duration or for future avai - Four oxy en outlets are provided: three in the left sidewall behind the pilot's seat for the conve- P nience o passengers and one in the pilot's oxy en anel. Oxygen flows from the outlets only when a mask hose is connected. Four artial re- rea hing type masks are provided, each with vi- E g Pnyl plastic hoses and flow indicators. T e three passenger masks are of the disposable t pe. The pilot's mask is a permanent type with a built-in microphone for ease of radio communicaion while using oxygen. To use the mask-microphone, connect its lead to the microphonejack located left of the instrument panel, in place of the aircraft microphone lead, and key the switch on the control yoke. The oxygen cylinder, when full char ed, contains 77.1 ft.3 (composite) or 115.7 ft.3 (composite) C (70 degrees F). d of aviator's breathing oxygen ( pec o. MIL-0-27210) under a pressure of 1850 PSI at 21 degrees Filling pressures will vary, however, due to ambient tem erature in the filling area,. and the rise of temperature resulting from compression of the oxygen. ! ecause of thls, merel fillln to 1850 PSI will not result in a properly filled cylinder. Fill to pressures indicated on Figure 1 or am ient temper- atures. Y % WARNING Oil, grease or other lubricants in contact with oxygen create a serious fire hazard, and such contact must be avoided when handling oxygen equipment. Ambient Temperature OF OC 0 -1 8 10 -12 2 0 -7 30 - 1 40 4 Filling Pressure Ambient Filling Pressure PSlG Temperature PSlG OF OC 1650 50 10 1875 1700 60 16 1925 1725 70 21 1975 1775 80 27 2000 1825 90 32 2050 FIGURE I. Oxygen Filling Pressures NOTE The oxygen cylinder should not be run down to less than 100 PSI. Below this pressure atmospheric contamination of the cylinder may occur, requiring valve removal and cylinder cleaning and inspection at an FAA approved repair station. Page 3 of 8 FAA APPROVED MOONEY AIRCRAFT CORPORATION AFM SUPPLEMENT OXYGEN SYSTEM M2OJ, M20K, M20L, M20S For FAA requirements concerning sup lemental oxy en, refer to FAR 91.32. Supplemental oxy- ger~should be used by all occupants wP7 en cruislng af! ove 12,500 feet. It IS often advisable,to use oxygen at altitudes lower than 12,500 feet under conditions of night flying, fat~gue,or periods of ph siolo ical or emot~onald~sturbances.Also the habitual and excessive use of tobacco or alcohol wlYusuajy necessitate the use of oxygen at less than 10.000 feet. The oxy en duration chart (Fi . 2 or 3) should be used in determining the usable duration (in 9 7 hours) o the oxygen suppl in he airplane for the chosen cruising altitude. The following proce- dure outlines the method offinding the duration from the chart: 1. Note the available oxygen pressure shown on the pressure gage. 2. Locate this ressure on the scale on the left side of the chart. Then go across the chart horizon- tally to the r It until intersecting the dia anal line which represents the number of persons on 9 board. From ?hat intersection drop vertlca ly down to the heavy line, marked 30.000'. 3. From this point on the heav line, follow the trend of the curved lines, down to the horizontal line re resenting cruise altitude. Yhen drop vertically down to the bottom of the chart and read the du- ragon n hours given on the scale. 4. As an example of the above procedure, 1400 PSI of pressure will safely sustain the ilot and one passenger for 3 hours and 30 minutes (Fig. 2) or 5 hours and 13 minutes FI 3 ) at 21.000 ft: or 7 hours and 59, minutes (Fig. 3). d however, cruisin at 20,000 ft: would permit an oxygen duration of 5 hours an 1 minutes (Fig. 2 j Light crew loads and relatively low altitudes will permit ox en durations off the chart. Such dura- tions can be calculated by determining the duration at 3 i 8 0 0 feet (by steps 1 and 2 above) and multiplyin by the "duration multiplier" shown on the right of the appro riate cruising altitude. Ex-

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am le:, (Zg. 2 only) ilot only at 1600 PSI has 7.9 hours duration at 36,000 ft., times 1.5 duration mukplier for 20.000 #.. ives 11.85 hours (1 1 hours and 50 minutes) duratipn at20.000 ft. Ox ge? Y durations off the chart o%viouslyexceed the airplanes duration. However. judicious cholces 0 alti- tude for the number of persons on board can permit flight planning for several fuel stops, without need for recharging the oxygen system at each stop. I SECTION II - LIMITATIONS~ There is no change to the Airplane Limitations when oxygen equipment is installed. 1 ) "Use aviators oxygen only" Location: at filler port. 2) "Oxygen-No Smoking When in Use" Location: at oxygen outlets NOTE Only masks which have end fittings marked with a green band are acceptable for use with this system. There is no change to the Airplane Emer ency Procedures when oxy en e ui ment is installed. In the event of oxygen loss above 20,080 ft. refer to AFM EMERGE!NCY%$CENT PROCE- DURES. DATE: 12-16-85 REV. A 5-9-86 REV. B 12-4-86 REV. C 9-29-87 REV. D 5-26-88 REV. E 8-15-00 FAA APPROVED AFM SUPPLEMENT MOONEY AIRCRAFT CORPORATION M2OJ, M20K, M20L, M20S OXYGEN SYSTEM I SECTION IV - NORMAL PROCEDURES~ Prior to flight, check to be sure that therejs an ly for.the trip, by notin the 8 that face masks an hoses are accessible and 9, oxygen pressure ga e read~ng,and referr~ngto (Fig. 2 or 3). Also c eck WARNING Greasy lipsticks and waxed mustaches have been known to ignite spontaneously inside oxygen masks. Passengers should be suitably advised prior to flight. WARNING For safety reasons no smoking should be allowed in the airplane while oxygen is being used. When ready to use the oxygen system, proceed as follows: 1. Mask and Hose - SELECT. Adjust mask to face and adjust metallic nose strap for snug mask fit. 2. Delivery Hose - PLUG INTO OUTLET assigned to that seat. NOTE When the oxygen system is turned on, oxygen will flow continuously at the appropriate rate of flow for the altitude without any manual adjustments. 3. Oxygen Supply Control Knob - ON. 4. Face Mask Hose Flow Indicator- CHECK. Oxygen is flowing if the indicator is being forced to- ward the mask. 5. Delive Hose - UNPLUG from outlet when discontinuing use of oxygen. This automatically X stops the ow of oxygen. 6 . Oxygen Supply Control Knob - OFF when oxygen is no longer required. WARNING Proper oxygen flow is critical to pilotlpassenger safety, especially at altitudes above 20,000 ft. MSL. It is important to monitor closely the face mask hose flow indicator to ensure oxygen is constantly flowing to the mask. A green indication on the flow indicator denotes proper oxygen flow. Always place the flow indicator in a position where it is in the normal scan area of the cockpit. Refer to duration chart (Fig. 2 or 3) for safe operational quantities. THROUGH I SECTION X - SAFETY TIPSI There are no changes to these SECTIONS when oxygen equipment is installed. DATE: 12-16-85 REV. A 5-9-86 REV. B 12-4-86 REV. C 9-29-87 REV. D 5-26-88 REV. E 8-1 5-00 Page 5 of 8 FAA APPROVED MOONEY AIRCRAFT CORPORATION AFM SUPPLEMENT OXYGEN SYSTEM M20Jl M20Kl M20L, M20S FIGURE 2 - OXYGEN DURATION CHART (77.1 CUBIC FT. CAPACITY) DATE: 12-16-85 REV. A 5-9-86 REV. B 12-4-86 REV. C 9-29-87 REV. D 5-26-88 REV. E 8-15-00 AFM SUPPLEMENT MOONEY AIRCRAFT CORPORATION MZOJ, MZOK, MZOL, M20S OXYGEN SYSTEM DATE: 12-16-85 REV. A 5-9-86 REV. B 12-4-86 REV. C 9-29-87 REV. D 5-26-88 REV. E 8-15-00 Page 7 of 8 FAA APPROVED MOONEY AIRCRAFT CORPORATION OXYGEN SYSTEM AFM SUPPLEMENT M2OJ, M20K, M20L, M20S BLANK FAA APPROVED p,Ah~E?O F B