# AD 79-09-02: Aileron Control Surfaces Drainage

- Type: Airworthiness directive
- Status: Current
- Products: Cessna 441
- Effective: May 7, 1979
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-3453
- Registered aircraft: 172 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4BDF0161C21F49E886256A34006AAE2C.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/79-09-02

## The airworthiness directive

79-09-02 CESSNA: Amendment 39-3453. Applies to Model 441 (Serial Numbers 441-0001 through 441-0090) airplanes.

COMPLIANCE: Required as indicated, unless already accomplished.

To assure proper drainage of the aileron control surfaces, within the next 100 hours time-in-service after the effective date of this AD, accomplish the following:

A) Incorporate additional drainage of the ailerons by drilling new drain holes in accordance with the instructions provided in Cessna Propjet Service Information Letter PJ 79-3, dated March 5, 1979.

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

NOTE: The FAA has determined that there is insufficient justification to require mandatory compliance with the elevator portion of Cessna Service Information Letter PJ 79-3. Therefore, this AD is not applicable to elevator drainage improvements provided by that letter.

This Amendment becomes effective May 7, 1979.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A28CE](https://openairdocs.org/tcds/A28CE): Textron Aviation Inc.; names 1 of 1 models: 441

## 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: 172 (172 by airframe model, 0 by engine model)
- Makers: Cessna 172

Models with the most aircraft:

- [Cessna 441](https://openairdocs.org/model/cessna-441): 172 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/79-09-02/models.md
Every aircraft: https://openairdocs.org/ad/79-09-02/aircraft.md

Its text cites no advisory circulars or STCs.

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