# AD 86-07-12: Engine Support Clevis

- Type: Airworthiness directive
- Status: Current
- Products: Pratt & Whitney Division JT9D-7R4G2
- Effective: April 11, 1986
- Superseded by: Nothing supersedes this AD
- Product type: Engine
- Amendment: 39-5267
- Registered aircraft: 13 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DD9DC746E520C0CB8625685F00710B13.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/86-07-12

## The airworthiness directive

86-07-12 PRATT & WHITNEY: Amendment 39-5267. Applies to PW JT9D-7R4G2 engines. Compliance is required as indicated unless already accomplished.

To prevent possible engine support clevis failure, accomplish the following:

  (a) Remove P/N 5006482-01 engine support clevis on PW JT9D-7R4G2 at or before 3,000 cycles in accordance with PW SB JT9D-7R4-72-119, Revision 3, dated November 5, 1985, or FAA approved equivalent.

  (b) Replace any engine support clevis with greater than 3,000 cycles prior to next flight.

NOTES: (1) For the purpose of this AD, the number of flight cycles equals the number of flights that involve an engine operating sequence consisting of engine starting, takeoff operation, landing and engine shutdown.

  (2) The hourly life limit is not affected by this AD.

Aircraft may be ferried in accordance with the provisions of FAR 21.197 and 21.199 to a base where the AD can be accomplished.

SB JT9D-7R4-72-119, Revision 3, dated November 5,1985, identified and described in this document, is 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 this document from the manufacturer may obtain copies upon request to Pratt & Whitney, Commercial Products Division, 400 Main Street, East Hartford, Connecticut 06108. These documents also may be examined at the Office of the Regional Counsel, New England Region, Federal Aviation Administration, 12 New England Executive Park, Burlington, Massachusetts 01803.

This amendment becomes effective on April 11, 1986.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS E3NE](https://openairdocs.org/tcds/E3NE): Pratt & Whitney; names 1 of 11 models: JT9D-7R4G2

## 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: 13 (0 by airframe model, 13 by engine model)
- Makers: Boeing 9, Airbus Industrie 2, Douglas 1, Mcdonnell Douglas 1

Models with the most aircraft:

- [Pratt & Whitney JT9D series](https://openairdocs.org/engine/pratt-whitney-jt9d-series): 13 aircraft (engine model)

All 1 models: https://openairdocs.org/ad/86-07-12/models.md
Every aircraft: https://openairdocs.org/ad/86-07-12/aircraft.md

Its text cites no advisory circulars or STCs.

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