# AD 79-06-04: Elevator Control Lock

- Type: Airworthiness directive
- Status: Current
- Products: Mooney M20F and M20J
- Effective: March 26, 1979
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-3438
- Registered aircraft: 2,137 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9B24378C20D8324886256A3B0071524E.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/79-06-04

## The airworthiness directive

79-06-04 MOONEY: Amendment 39-3438. Applies to models M20F and M20J, registration numbers:

N3207F N201A N9545M N201WX N201EU N201MF N201TN N201MR N201NW N201WT N201TS N201KJ HB-DWK N201YD N201YB N201WE N201JF OE-DHM N201TW N201ND N201MS N201GJ N201WM N201MW N201SE

Compliance is required within the next 25 hours of flight time after the effective date of this Airworthiness Directive (unless already accomplished). To prevent elevator control lock, accomplish the following: 1. Inspect the pitch servo installation in accordance with Edo-Aire Mitchell Service Bulletin MB-14 dated 3/30/78 and assure servo stop bracket part number 7B1320 is installed and adjusted in accordance with SB MB-14, paragraph 5. 2. If servo stop bracket is not installed, accomplish the installation in accordance with Service Bulletin MB-14. This amendment becomes effective March 26, 1979.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 2A3](https://openairdocs.org/tcds/2A3): Mooney International Corporation; names 2 of 17 models: M20F, M20J

## 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: 2,137 (2,137 by airframe model, 0 by engine model)
- Makers: Mooney 2,129, Aerostar Acft Corp Of Texas 8

Models with the most aircraft:

- [Mooney M20J](https://openairdocs.org/model/mooney-m20j): 1,408 aircraft (airframe model)
- [Mooney M20F](https://openairdocs.org/model/mooney-m20f): 721 aircraft (airframe model)
- [Aerostar Acft Corp Of Texas M20F](https://openairdocs.org/model/aerostar-acft-corp-of-texas-m20f): 8 aircraft (airframe model)

All 3 models: https://openairdocs.org/ad/79-06-04/models.md
Every aircraft: https://openairdocs.org/ad/79-06-04/aircraft.md

Its text cites no advisory circulars or STCs.

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