# AD 78-20-08: Trim Tab Push Rods

- Type: Airworthiness directive
- Status: Current
- Products: Textron 76
- Effective: October 12, 1978
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-3311
- Registered aircraft: 151 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B2F8C613F0D0CE6986256A080072DD58.0001
- DRS record last changed: January 21, 2026
- Page: https://openairdocs.org/ad/78-20-08

## The airworthiness directive

78-20-08 BEECH: Amendment 39-3311. Applies to Model 76 (Serial Numbers ME-1 through ME-62 and ME-66) airplanes.

To preclude failure of the rudder and elevator trim tab push rods, prior to further flight:

A) If not previously accomplished, replace Beech Part Number 105-520024-5 rudder trim tab push rod with new Beech Part Number 105-520045-9 rudder trim tab push rod and rebalance the rudder control surface, where necessary, in accordance with Beechcraft Liberal Service Letter No. 78-4 dated September 14, 1978, or later approved revisions.

B) If not previously accomplished, replace Beech Part Number 105-520024-1 elevator trim tab push rod with new Beech Part Number 105-520048-1 elevator trim tab push rod and rebalance the elevator control surfaces, where necessary, in accordance with Beechcraft Liberal Service Letter No. 78-4 dated September 14, 1978, or later approved revisions.

C) Aircraft may not be flown in accordance with FAR 21.197 to a base to accomplish this AD, unless authorized by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.

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

This amendment becomes effective October 12, 1978, to all persons except those to whom it has already been made effective by telegram from the FAA dated September 9, 1978.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A29CE](https://openairdocs.org/tcds/A29CE): Textron Aviation Inc.; names 1 of 1 models: 76

## 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: 151 (151 by airframe model, 0 by engine model)
- Makers: Beech 151

Models with the most aircraft:

- [Beech 76](https://openairdocs.org/model/beech-76): 151 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/78-20-08/models.md
Every aircraft: https://openairdocs.org/ad/78-20-08/aircraft.md

Its text cites no advisory circulars or STCs.

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