# AD 79-19-08: Pressure Relief Door

- Type: Airworthiness directive
- Status: Current
- Products: Lockheed Martin L-1011-385-1, L-1011-385-1-14 and L-1011-385-1-15
- Effective: September 24, 1979
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-3561
- Registered aircraft: 3 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C53C894791DCA79A86256975004924D7.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/79-19-08

## The airworthiness directive

79-19-08 LOCKHEED-CALIFORNIA COMPANY: Amendment 39-3561. Applies to all L-1011-385-1, L-1011-385-1-14, and L-1011-385-1-15 airplanes certificated in all categories, configured with a C-1A cargo door.

Compliance required as indicated.

To assure the retention of "fail-safe" operational capability of the pressure relief door, accomplish the following:

  (a) Within the next 300 hours time in service, unless already accomplished, install the antifriction gasket on the flange of the pressure relief door in accordance with the FAA approved Lockheed-California Company Service Bulletin 093-52-133 dated May 30, 1979.

  (b) Special flight permits may be issued, in accordance with FAR 21.197 and 21.199, to operate airplanes to a base for the accomplishment of modification required by this AD.

  (c) Alternate modifications or other actions which provide an equivalent level of safety may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region.

Thisamendment becomes effective September 24, 1979.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A23WE](https://openairdocs.org/tcds/A23WE): Lockheed Martin Corporation; names 3 of 4 models: L-1011-385-1-14, L-1011-385-1, L-1011-385-1-15

## 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: 3 (3 by airframe model, 0 by engine model)
- Makers: Lockheed 3

Models with the most aircraft:

- [Lockheed L-1011-385-1](https://openairdocs.org/model/lockheed-l-1011-385-1): 2 aircraft (airframe model)
- [Lockheed L-1011-385-1-15](https://openairdocs.org/model/lockheed-l-1011-385-1-15): 1 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/79-19-08/models.md
Every aircraft: https://openairdocs.org/ad/79-19-08/aircraft.md

Its text cites no advisory circulars or STCs.

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