# AD 76-04-02: Seat Locking Pins

- Type: Airworthiness directive
- Status: Current
- Products: Textron 200, A100, A200, C90 and E90
- Effective: February 26, 1976
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small/large airplane
- Amendment: 39-2518
- Registered aircraft: 629 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CDB3638D4485D269862569850046DAB2.0001
- DRS record last changed: January 21, 2026
- Page: https://openairdocs.org/ad/76-04-02

## The airworthiness directive

76-04-02 BEECH: Amendment 39-2518. Applies to Models C90 (Serial Numbers LJ- 654 and LJ-674 thru LJ-676), E90 (Serial Numbers LW-134 and LW-157 thru LW-163), A100 (Serial Numbers B-178 thru B-221, B-224 and B-225), 200 (Serial Numbers BB-6 thru BB-87, BB-89 thru BB-99 and BB-101 thru BB-106) and A200 (Serial Numbers BC-1 thru BC-8, and BD-1 thru BD-8) airplanes.

Compliance: Required as indicated, unless already accomplished.

To preclude inadvertent disengagement of the seat locking pins, within the next 50 hours' time in service after the effective date of this AD, replace Beech P/N 50-534436-127 seat locking pins (3.38 inch length) with Beech P/N 101-530412-1 seat locking pins (3.69 inch length) in accordance with Beechcraft Service Instructions No. 0789-314 or C-12A-0001 (military airplanes), or later approved revisions, or any equivalent modification approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.

This amendment becomes effectiveFebruary 26, 1976.

## Affected data sheets (3) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 3A20](https://openairdocs.org/tcds/3A20): Textron Aviation Inc.; names 2 of 22 models: E90, C90
- [TCDS A24CE](https://openairdocs.org/tcds/A24CE): Textron Aviation Inc.; names 2 of 37 models: 200, A200 (C-12A)
- [TCDS A14CE](https://openairdocs.org/tcds/A14CE): Textron Aviation Inc.; names 1 of 12 models: A100

## 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: 629 (629 by airframe model, 0 by engine model)
- Makers: Beech 628, Raytheon 1

Models with the most aircraft:

- [Beech 200](https://openairdocs.org/model/beech-200): 234 aircraft (airframe model)
- [Beech C90](https://openairdocs.org/model/beech-c90): 216 aircraft (airframe model)
- [Beech E-90](https://openairdocs.org/model/beech-e-90): 145 aircraft (airframe model)
- [Beech A200](https://openairdocs.org/model/beech-a200): 17 aircraft (airframe model)
- [Beech A100](https://openairdocs.org/model/beech-a100): 15 aircraft (airframe model)
- [Beech A200 (C-12C)](https://openairdocs.org/model/beech-a200-c-12c): 1 aircraft (airframe model)
- [Raytheon E90](https://openairdocs.org/model/raytheon-e90): 1 aircraft (airframe model)

All 7 models: https://openairdocs.org/ad/76-04-02/models.md
Every aircraft: https://openairdocs.org/ad/76-04-02/aircraft.md

Its text cites no advisory circulars or STCs.

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