# AD 77-02-07: Propeller Feathering

- Type: Airworthiness directive
- Status: Current
- Products: Textron 200
- Effective: March 1, 1977
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small/large airplane
- Amendment: 39-2817
- Registered aircraft: 234 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/02AE97800879B3CB862569850046DD66.0001
- DRS record last changed: January 21, 2026
- Page: https://openairdocs.org/ad/77-02-07

## The airworthiness directive

77-02-07 BEECH: Amendment 39-2817. Applies to Model 200 (Serial Numbers BB-2, BB-6 thru BB-18 and BB-20 thru BB-50) airplanes.

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

To prevent unintentional feathering of a propeller due to failure of the secondary low pitch stop amplifier, accomplish either Paragraph A or B:

A) Replace both P/N 101-364171-1 and P/N 101-364171-9 printed circuit board assemblies with P/N 101-364170-15 printed circuit board assemblies in accordance with Beechcraft Service Instruction No. 0745-354, notwithstanding its supersedence by Beechcraft Service Instruction No. 0808-247.

B) Remove secondary low pitch stop system in accordance with Beechcraft Service Instruction No. 0808-247, or later approved revisions.

C) Airplanes which have accumulated 100 hours' time in service after the effective date of this AD may be flown in accordance with FAR 21.197 to a place where a replacement or removal can be performed, providing the existing amplifiers have not malfunctioned.

D) Any equivalent method of compliance with this AD, must be approved by the Chief, Engineering and Manufacturing Branch, FAA Central Region.

NOTE: The manufacturer has advised the FAA that sufficient replacement parts are available to accomplish Paragraph A of this AD.

This amendment becomes effective March 1, 1977.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A24CE](https://openairdocs.org/tcds/A24CE): Textron Aviation Inc.; names 1 of 37 models: 200

## 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: 234 (234 by airframe model, 0 by engine model)
- Makers: Beech 234

Models with the most aircraft:

- [Beech 200](https://openairdocs.org/model/beech-200): 234 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/77-02-07/models.md
Every aircraft: https://openairdocs.org/ad/77-02-07/aircraft.md

Its text cites no advisory circulars or STCs.

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