# AD 74-20-05: Elevator Modification

- Type: Airworthiness directive
- Status: Current
- Products: Bell Helicopter Textron 212
- Effective: October 21, 1974
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Amendment: 39-1965
- Registered aircraft: 59 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/76F4867BB85C412786256A340053E50E.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/74-20-05

## The airworthiness directive

74-20-05 BELL: Amendment 39-1965. Applies to Bell Model 212 helicopters, serial numbers 30501 through 30593, certificated in all categories.

Compliance required within the next 100 hours' time in service after the effective date of the A.D., unless already accomplished.

To prevent possible failure of the synchronized elevator ribs with resulting loss of the elevator, modify the right and left elevators as specified in Part III of Bell Helicopter Company Service Bulletin No. 212-01-74-2 dated March 27, 1974, or later FAA approved revision.

The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to the Service Manager, Bell Helicopter Company, P.O. Box 482, Fort Worth, Texas 76101. These documents may also be examined at the Office of the Regional Counsel, Southwest Region, FAA, 4400 Blue Mound Road, Fort Worth, Texas, and at FAA Headquarters, 800 Independence Avenue, S.W., Washington, D. C. A historical file on this A.D. which includes the incorporated material in full is maintained by the FAA at its headquarters in Washington, D. C., and at the Southwest Regional Office in Fort Worth, Texas.

This amendment becomes effective October 21, 1974.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS H4SW](https://openairdocs.org/tcds/H4SW): Bell Textron Inc.; names 1 of 4 models: 212

## 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: 59 (59 by airframe model, 0 by engine model)
- Makers: Bell 54, Bell Helicopter Textron 5

Models with the most aircraft:

- [Bell 212](https://openairdocs.org/model/bell-212): 54 aircraft (airframe model)
- [Bell Helicopter Textron 212](https://openairdocs.org/model/bell-helicopter-textron-212): 5 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/74-20-05/models.md
Every aircraft: https://openairdocs.org/ad/74-20-05/aircraft.md

Its text cites no advisory circulars or STCs.

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