# AD 71-07-04: Emergency Exit Window

- Type: Airworthiness directive
- Status: Current
- Products: Cessna 401, 401A, 401B, 402, 402A, 402B, 411 and 411A
- Effective: April 6, 1971
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-1185
- Registered aircraft: 120 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/90F043914B25167586256A340062CD14.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/71-07-04

## The airworthiness directive

71-07-04 CESSNA: Amdt. 39-1185. Applies to Models 401 (Serial Numbers 401-0041 and up), 401A (all Serial Numbers), 401B (Serial Numbers 401B0001 thru 401B0052), 402 (Serial Numbers 402-0041 and up), 402A (all Serial Numbers), 402B (Serial Numbers 402B0001 thru 402B0030), 411 and 411A (Serial Numbers 411-0235 and up) airplanes.

Compliance: Required as indicated, unless already accomplished.

To assure safe operation of the emergency exit window, accomplish the following:

Within 50 hours' time in service after the effective date of this AD, modify the emergency exit window in accordance with Cessna Service Letter No. ME70-30 dated August 21, 1970, and Cessna Service Kit SK402-23 dated June 15, 1970, or by any equivalent method approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.

NOTE: The installation of Cessna Service Kit SK402-23 does not require pulling the emergency release handle. If handle is inadvertently pulled, assure that existing emergency exit window retention pins are properly installed.

This amendment becomes effective April 6, 1971.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A7CE](https://openairdocs.org/tcds/A7CE): Textron Aviation Inc.; names 8 of 16 models: 402B, 411A, 402, 411, 402A, 401A, 401, 401B

## 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: 120 (120 by airframe model, 0 by engine model)
- Makers: Cessna 120

Models with the most aircraft:

- [Cessna 402B](https://openairdocs.org/model/cessna-402b): 49 aircraft (airframe model)
- [Cessna 401](https://openairdocs.org/model/cessna-401): 21 aircraft (airframe model)
- [Cessna 401A](https://openairdocs.org/model/cessna-401a): 15 aircraft (airframe model)
- [Cessna 401B](https://openairdocs.org/model/cessna-401b): 15 aircraft (airframe model)
- [Cessna 402](https://openairdocs.org/model/cessna-402): 7 aircraft (airframe model)
- [Cessna 411](https://openairdocs.org/model/cessna-411): 6 aircraft (airframe model)
- [Cessna 411A](https://openairdocs.org/model/cessna-411a): 4 aircraft (airframe model)
- [Cessna 402A](https://openairdocs.org/model/cessna-402a): 3 aircraft (airframe model)

All 8 models: https://openairdocs.org/ad/71-07-04/models.md
Every aircraft: https://openairdocs.org/ad/71-07-04/aircraft.md

Its text cites no advisory circulars or STCs.

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