# AD 75-11-07: Elevator Trim

- Type: Airworthiness directive
- Status: Current
- Products: Gulfstream Aerospace G-1159
- Effective: March 22, 1976
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-2551
- Registered aircraft: 14 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A45C7FA3459972CE86256E0C006D492C.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/75-11-07

## The airworthiness directive

75-11-07 GRUMMAN AMERICAN AVIATION CORPORATION: Amendment 39- 2210 as amended by Amendment 39-2551. Applies to Grumman G-1159 airplanes, S/N's 1 thru 156 and S/N 775, certificated in all categories.

Compliance required within the next 1200 hours' time in service after May 22, 1975, or before October 31, 1976, whichever occurs first, unless already accomplished.

To prevent unnecessarily high longitudinal stick forces due to an inadvertent excessive increase of nose down electric trim, reduce the elevator trim nose down authority from 8.5 + 0.5 degrees to 4.5 + 0.5 degrees in accordance with Grumman Aircraft Service Change 182, Amendment 1, or in an equivalent manner approved by the Chief, Engineering and Manufacturing Branch, Southern Region.

Amendment 39-2210 became effective May 22, 1975.

This amendment 39-2551 becomes effective March 22, 1976.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A12EA](https://openairdocs.org/tcds/A12EA): Gulfstream Aerospace Corporation; names 1 of 7 models: G-1159

## 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: 14 (14 by airframe model, 0 by engine model)
- Makers: Grumman 8, Grumman American Avn. 4, Gulfstream American 2

Models with the most aircraft:

- [Grumman G-1159](https://openairdocs.org/model/grumman-g-1159): 8 aircraft (airframe model)
- [Grumman American Avn. G-1159](https://openairdocs.org/model/grumman-american-avn-g-1159): 4 aircraft (airframe model)
- [Gulfstream American G-1159](https://openairdocs.org/model/gulfstream-american-g-1159): 2 aircraft (airframe model)

All 3 models: https://openairdocs.org/ad/75-11-07/models.md
Every aircraft: https://openairdocs.org/ad/75-11-07/aircraft.md

Its text cites no advisory circulars or STCs.

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