# AD 78-14-02: Oxygen Pressure

- Type: Airworthiness directive
- Status: Current
- Products: Dassault Falcon 10
- Effective: July 11, 1978
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-3256
- Registered aircraft: 59 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/74A13FBA377F7AE48625698B005DE0C0.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/78-14-02

## The airworthiness directive

78-14-02 AVIONS MARCEL DASSAULT-BREGUET AVIATION (AMD-BA): Amendment 39-3256. Applies to Falcon 10 airplanes serial numbers 1 through 108, except serial numbers 93, 101 and 103, certificated in all categories.

Compliance is required within the next 150 hours time in service after the effective date of this AD, unless already accomplished.

To reduce the possibility of jamming of the oxygen pressure reducing valve due to water condensation freezing in the valve expansion chamber, modify the oxygen pressure reducing valve installation in accordance with AMD-BA Service Bulletin F10-0135 dated February 11, 1977, including Revision 2, dated January 4, 1978, or a modification approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Region.

NOTE: The oxygen pressure reducing valve is located in the righthand side of the nose landing gear wheel well.

This amendment becomes effective July 11, 1978.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A33EU](https://openairdocs.org/tcds/A33EU): Dassault Aviation; names 1 of 1 models: Falcon 10

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 59 (59 by airframe model, 0 by engine model)
- Makers: Dassault-Breguet 56, Avion Marcel Dassault Breguet 2, Avions Marcel Dassault Breguet 1

Models with the most aircraft:

- [Dassault-Breguet FALCON 10](https://openairdocs.org/model/dassault-breguet-falcon-10): 56 aircraft (airframe model)
- [Avion Marcel Dassault Breguet FALCON 10](https://openairdocs.org/model/avion-marcel-dassault-breguet-falcon-10): 2 aircraft (airframe model)
- [Avions Marcel Dassault Breguet FALCON 10](https://openairdocs.org/model/avions-marcel-dassault-breguet-falcon-10): 1 aircraft (airframe model)

All 3 models: https://openairdocs.org/ad/78-14-02/models.md
Every aircraft: https://openairdocs.org/ad/78-14-02/aircraft.md

Its text cites no advisory circulars or STCs.

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