# AD 77-04-02: Directional Control

- Type: Airworthiness directive
- Status: Current
- Products: Piper PA-36-285
- Effective: February 21, 1977
- Published: February 22, 1977
- Issued: February 7, 1977
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-2834
- Registered aircraft: 40 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A74A469A3CEE7D3C8625699E004A994E.0001
- DRS record last changed: November 21, 2025
- Page: https://openairdocs.org/ad/77-04-02

## The airworthiness directive

77-04-02 PIPER: Amendment 39-2834. Applies to Model PA-36-285, Serial Nos. 36- 7360001 through 36-7660135 certificated in all categories.

To prevent possible hazards associated with loss of directional control due to tail wheel shimmy, accomplish the following within the next 100 hours in service from the effective date of this AD unless previously accomplished.:

  (a) On aircraft Serial Nos. 36-7560001 through 36-766080 incorporate Piper Kit Number 761 034 tail wheel modification or equivalent.

  (b) On aircraft Serial Nos. 36-7360001 through 36-7660135 incorporate Piper Kit Number 761 067, Fuselage Frame Reinforcement or equivalent.

  (c) Equivalent alterations must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

  (d) Upon request with substantiating data, submitted through an FAA Maintenance Inspector, the compliance time for incorporating the alterations may be adjusted by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

(Piper Service Bulletin Number 506 pertains to this subject.)

This amendment is effective February 21, 1977.

## 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: 40 (40 by airframe model, 0 by engine model)
- Makers: Piper 40

Models with the most aircraft:

- [Piper PA-36-285](https://openairdocs.org/model/piper-pa-36-285): 40 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/77-04-02/models.md
Every aircraft: https://openairdocs.org/ad/77-04-02/aircraft.md

Its text cites no advisory circulars or STCs.

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