# AD 75-08-07: Bleed Air Line

- Type: Airworthiness directive
- Status: Current
- Products: Twin Commander 690A
- Effective: April 10, 1975
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-2160
- Registered aircraft: 56 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F3499F1B3BDCF72F86256A38005DF19F.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/75-08-07

## The airworthiness directive

75-08-07 ROCKWELL INTERNATIONAL CORP., GENERAL AVIATION DIVISION: Amendment 39-2160. Applies to Model 690A airplanes, Serial Numbers 11100 through 11208.

Compliance required within 25 hours' time in service after the effective date of this AD, unless otherwise accomplished.

To minimize the possibility of bleed air line failure and resultant leakage, accomplish the following:

Modify Model 690A airplanes in accordance with Rockwell International, General Aviation Division, Service Bulletin Number 147 dated November 27, 1974, except that the requirements of Paragraphs "s" and "u" may be ignored and the first item under "SUPPLY DATA" may be deleted, or later approved revision, or in accordance with an equivalent procedure approved by the Chief, Engineering and Manufacturing Branch, Flight Standards Division, Southwest Region, Federal Aviation Administration.

This amendment becomes effective on April 10, 1975.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 2A4](https://openairdocs.org/tcds/2A4): Twin Commander Aircraft LLC; names 1 of 21 models: 690A

## 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: 56 (56 by airframe model, 0 by engine model)
- Makers: Rockwell International 34, Aero Commander 22

Models with the most aircraft:

- [Rockwell International 690A](https://openairdocs.org/model/rockwell-international-690a): 34 aircraft (airframe model)
- [Aero Commander 690A](https://openairdocs.org/model/aero-commander-690a): 22 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/75-08-07/models.md
Every aircraft: https://openairdocs.org/ad/75-08-07/aircraft.md

Its text cites no advisory circulars or STCs.

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