# AD 84-15-04: Tail Rotor Controls

- Type: Airworthiness directive
- Status: Current
- Products: Sikorsky S-76A
- Effective: August 3, 1984
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Amendment: 39-4893
- Registered aircraft: 19 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/154B226DA07C913186256A4E0044F2A1.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/84-15-04

## The airworthiness directive

84-15-04 SIKORSKY AIRCRAFT DIVISION: Amendment 39-4893. Applies to all Sikorsky Model S-76A helicopters, certificated in all categories. Compliance is required within 30 days after the effective date of this AD unless already accomplished.

To prevent loss of control of the helicopter due to tail rotor control cable failure, accomplish the following:

Unless already accomplished, install a tail rotor controls centering quadrant in accordance with Sikorsky Customer Service Notice No. 76-133, Revision A, dated November 10, 1983, or FAA-approved equivalent.

Upon submission of substantiating data by an owner or operator through an FAA maintenance inspector, the compliance time of this AD may be adjusted and/or an equivalent method of compliance may be approved upon request to the Manager, Boston Aircraft Certification Office, 12 New England Executive Park, Burlington, Massachusetts 01803, telephone (617) 273-7118.

This amendment becomes effective August 3, 1984.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS H1NE](https://openairdocs.org/tcds/H1NE): Sikorsky Aircraft Corporation; names 1 of 4 models: S-76A

## 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: 19 (19 by airframe model, 0 by engine model)
- Makers: Sikorsky 19

Models with the most aircraft:

- [Sikorsky S-76A](https://openairdocs.org/model/sikorsky-s-76a): 19 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/84-15-04/models.md
Every aircraft: https://openairdocs.org/ad/84-15-04/aircraft.md

Its text cites no advisory circulars or STCs.

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