# AD 81-04-02: Incorporation Of AFM Revisions

- Type: Airworthiness directive
- Status: Current
- Products: Gulfstream Aerospace G-159
- Effective: February 12, 1981
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-4035
- Registered aircraft: 5 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6965050D06EFA1D0862569F10067204A.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/81-04-02

## The airworthiness directive

81-04-02 GULFSTREAM AMERICAN CORPORATION: Amendment 39-4035. Applies to all Gulfstream I (G-159) airplanes certificated in all categories.

Compliance is required as indicated, unless already accomplished.

To prevent possible operation at degraded performance levels due to inaccurate performance data presented in the AFM, accomplish the following:

  (a) Within 25 hours time in service after the effective date of this AD, incorporate FAA approved Gulfstream I (G-159) Interim Revisions 23-5, dated October 30, 1980, and 23-6, dated November 28, 1980, into the AFM and operate the airplane accordingly.

  (b) These interim revisions may be removed from Gulfstream I (G-159) AFM when FAA approved Revision 24 is incorporated.

An equivalent means of compliance may be approved by the Chief, Engineering and Manufacturing Branch, ASO-210, FAA, Southern Region, P.O. Box 20636, Atlanta, Georgia 30320.

This amendment becomes effective February 12, 1981.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 1A17](https://openairdocs.org/tcds/1A17): Gulfstream Aerospace Corporation; names 1 of 1 models: G-159

## 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: 5 (5 by airframe model, 0 by engine model)
- Makers: Grumman 4, Grumman American Avn. 1

Models with the most aircraft:

- [Grumman G-159](https://openairdocs.org/model/grumman-g-159): 4 aircraft (airframe model)
- [Grumman American Avn. G-159](https://openairdocs.org/model/grumman-american-avn-g-159): 1 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/81-04-02/models.md
Every aircraft: https://openairdocs.org/ad/81-04-02/aircraft.md

Its text cites no advisory circulars or STCs.

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