# AD 74-23-07: Air Inlet Duct

- Type: Airworthiness directive
- Status: Current
- Products: Cessna A188B
- Effective: November 15, 1974
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-2010
- Registered aircraft: 212 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8BBBAF305464BCB886256A3400649982.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/74-23-07

## The airworthiness directive

74-23-07 CESSNA: Amendment 39-2010. Applies to Cessna Model A188B (Serial Numbers 18801375 through 18801824, including those serial numbers with suffix "T") airplanes.

Compliance: Required as indicated, unless already accomplished.

To preclude induction air inlet duct collapse and resulting in engine power loss within the next 25 hours' time in service after the effective date of this AD, accomplish the following:

Replace the existing induction air inlet duct with Cessna P/N 1650044-1 bellows type induction air inlet duct or equivalent, in accordance with Cessna Service Letter No. SE 74-23, dated October 4, 1974, or later approved revisions.

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 November 15, 1974.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A9CE](https://openairdocs.org/tcds/A9CE): Textron Aviation Inc.; names 1 of 7 models: A188B

## 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: 212 (212 by airframe model, 0 by engine model)
- Makers: Cessna 212

Models with the most aircraft:

- [Cessna A188B](https://openairdocs.org/model/cessna-a188b): 212 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/74-23-07/models.md
Every aircraft: https://openairdocs.org/ad/74-23-07/aircraft.md

Its text cites no advisory circulars or STCs.

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