# AD 71-12-03: Flex Drive Elevator Tab Control

- Type: Airworthiness directive
- Status: Current
- Products: Grumman American G-21A (Army OA-9, Navy JRF-1, -2, -3, -4, -5, and -6B)
- Effective: June 10, 1971
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-1224
- Registered aircraft: 34 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/028BB7EBEBCA768386256A38005B6325.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/71-12-03

## The airworthiness directive

71-12-03 GRUMMAN AIRCRAFT: Amdt. 39-1224. Applies to Model G21A aircraft certificated in all categories.

Within the next 25 flight hours after the effective date of this AD, unless already accomplished, visually inspect, replace or repair P/N 7190Y-OA-1408 (flexible drive shaft, elevator tab control) in accordance with the procedure of Grumman Customer Bulletin G21A No. 71-1 dated 3 March 1971 or with equivalent method.

Equivalent methods or parts must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Southern Region.

This amendment is effective June 10, 1971.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS TC 654](https://openairdocs.org/tcds/TC%20654): Frakes Aviation; names 1 of 2 models: G-21A (Army OA-9; Navy JRF-1; -2; -3; -4; -5; and -6B)

## 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: 34 (34 by airframe model, 0 by engine model)
- Makers: Grumman 34

Models with the most aircraft:

- [Grumman G-21A](https://openairdocs.org/model/grumman-g-21a): 34 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/71-12-03/models.md
Every aircraft: https://openairdocs.org/ad/71-12-03/aircraft.md

Its text cites no advisory circulars or STCs.

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