# AD 79-08-07: Anti-Icing Propeller Wiring

- Type: Airworthiness directive
- Status: Current
- Products: Cessna 441
- Effective: April 30, 1979
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-3451
- Registered aircraft: 172 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/80BE8999D5F65C2486256A34006AABDC.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/79-08-07

## The airworthiness directive

79-08-07 CESSNA: Amendment 39-3451. Applies to Model 441 (S/N's 441-0001 through 441-0083 and 441-0085) airplanes equipped with a Cessna installed propeller anti-icing system.

COMPLIANCE: Required as indicated unless already accomplished.

To preclude the possible occurrence of smoke/fire behind the pilot's instrument panel, accomplish the following:

A) Within the next 10 hours time-in-service, except for those airplanes previously modified, modify the propeller anti-icing electrical wiring in accordance with Cessna Propjet Service Information Letter PJ 79-2 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.

This amendment becomes effective on April 30, 1979 to all persons except those to whom it has already been made effective by an airmail letter from the FAA dated March 16, 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/79-08-07/models.md
Every aircraft: https://openairdocs.org/ad/79-08-07/aircraft.md

Its text cites no advisory circulars or STCs.

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