# AD 75-12-07: Governors

- Type: Airworthiness directive
- Status: Current
- Products: Cessna 310P, 310Q and Governors
- Effective: June 6, 1975
- Superseded by: Nothing supersedes this AD
- Product type: Appliance
- Amendment: 39-2226
- Registered aircraft: 338 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C02F4D5DD2E669E086256A330055F53C.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/75-12-07

## The airworthiness directive

75-12-07 McCAULEY PROPELLER GOVERNORS: Amendment 39-2226. Applies to the following McCauley Governors installed on but not limited to Cessna 310P and 310Q aircraft models:

Governor Models and Serial Numbers

DCF290D1A/T2 721466 730108 721481 730113 721482 730115 thru 730121 721484 730208 thru 730219 721486 730223 thru 730227 721489 thru 721494 730268 thru 730272 721572 730274 thru 730279 721576 730423 thru 730430 721577 730432 thru 730437 721579 730439 thru 730458 721581 730460 thru 730466 730106 730482 thru 730490

DCFS290D1A/T2 730041 thru 730050 730331 730052 thru 730054 730390 thru 730394 730159 thru 730165 730635 thru 730643 730244 thru 730252

DCFU290D1A/T2 730150 thru 730152 730361 thru 730378 730155 730402 730236 thru 730243 730654 thru 730656 730350 thru 730359 730671 thru 730681

DCFUS290D1A/T2 730058 thru 730061 730304 thru 730311 730122 thru 730129 730505 thru 730508 730131

Compliance required as indicated, unless already accomplished.

To prevent the possibility of loss of propeller pitch control including the inability to feather, and propeller-engine overspeeding inflight, accomplish the following:

Within the next 100 hours' time in service after the effective date of this Airworthiness Directive, remove and replace the affected propeller governors in accordance with McCauley Service Bulletin No. 108 dated May 12, 1975, or later Federal Aviation Administration approved revisions, or an equivalent procedure approved by the Chief, Engineering and Manufacturing Branch, Great Lakes Region.

(Cessna Multi-Engine Service Letter No. ME 75-12, dated May 16, 1975 also pertains to this subject.)

The manufacturer's specifications and procedures identified in this directive are incorporated herein and made part hereof pursuant to 5 U.S.C. 522(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to McCauley Accessory Division, Cessna Aircraft Company, Box 7, Roosevelt Station, Dayton, Ohio 45417, and the Cessna Aircraft Company, Wallace Division, Box 1977, Wichita, Kansas 67201. These documents may also be examined at the Great Lakes Regional Office, 2300 East Devon Avenue, Des Plaines, Illinois 60018 and at FAA headquarters, 800 Independence Avenue, S.W., Washington, D.C. A historical file of this AD which includes incorporated material in full is maintained by the FAA at its headquarters in Washington, D.C., and at the Great Lakes Region.

This amendment becomes effective June 6, 1975.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 3A10](https://openairdocs.org/tcds/3A10): Textron Aviation Inc.; names 2 of 23 models: 310P, 310Q

## 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: 338 (338 by airframe model, 0 by engine model)
- Makers: Cessna 338

Models with the most aircraft:

- [Cessna 310Q](https://openairdocs.org/model/cessna-310q): 277 aircraft (airframe model)
- [Cessna 310P](https://openairdocs.org/model/cessna-310p): 61 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/75-12-07/models.md
Every aircraft: https://openairdocs.org/ad/75-12-07/aircraft.md

Its text cites no advisory circulars or STCs.

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