# AD 69-20-04: Door Locking Mechanism

- Type: Airworthiness directive
- Status: Current
- Products: Maryland Air Industries F-27, F-27A, F-27B, F-27F, F-27G, F-27J, F-27M, FH-227, FH-227B, FH-227C, FH-227D and FH-227E
- Effective: November 3, 1969
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-849
- Registered aircraft: 1 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6712935FE0EFD9F6862569850066A909.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/69-20-04

## The airworthiness directive

69-20-04 FAIRCHILD-HILLER: Amdt. 39-849. Applies to F-27 and FH-227 type airplanes certificated in all categories and incorporating rear passenger door spindle, P/N 27-313006-3, -5, -7, or -9.

Compliance required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished.

To provide a more positive retention of the passenger door locking mechanism accomplish the following:

  (a) For F-27 type airplanes with spindle, P/N 27-313006-3, installed in the door lock mechanism, comply with Section D(1) through D(8) of Revision 1 of Fairchild Hiller Service Bulletin No. F-27-52-27 dated June 17, 1969. In place of Step "D(5)", rig the door mechanism in accordance with Fairchild Hiller Service Bulletin No. F-27-52-19, dated June 17, 1969.

  (b) For F-27 type airplanes with spindle, P/N 27-313006-5, 27-313006-7, or 27-313006-9, installed in the door lock mechanism, comply with Section E(1) through E(8) of Revision 1- of Fairchild Hiller Service Bulletin No. F-27-52-27, dated June 17, 1969. Rig the door mechanism in accordance with Fairchild Hiller Service Bulletin No. F-27-52-19, dated June 17, 1969.

  (c) For FH-227 type airplanes with spindle, P/N 27-313006-5, 27-313006-7, or 27-313006-9, installed in the door lock mechanism, comply with the "Accomplishment Instructions" of Fairchild Hiller Service Bulletin No. FH-227-52-13, dated June 17, 1969.

  (d) An equivalent alteration approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region may be used in lieu of the foregoing methods.

  (e) Upon request with substantiating data submitted through an FAA maintenance inspector, the compliance time specified in this AD may be increased by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

This amendment effective November 3, 1969.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 7A1](https://openairdocs.org/tcds/7A1): Maryland Air Industries Inc.; names 12 of 12 models: FH-227B, FH-227C, FH-227D, F-27, F-27A, F-27M, F-27J, FH-227E…

## 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: 1 (1 by airframe model, 0 by engine model)
- Makers: Fairchild 1

Models with the most aircraft:

- [Fairchild F-27F](https://openairdocs.org/model/fairchild-f-27f): 1 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/69-20-04/models.md
Every aircraft: https://openairdocs.org/ad/69-20-04/aircraft.md

Its text cites no advisory circulars or STCs.

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