# AD 84-01-01: Compressor Assemblies

- Type: Airworthiness directive
- Status: Current
- Products: General Electric CF6-45A, CF6-45A2, CF6-50A, CF6-50C, CF6-50C1, CF6-50C2, CF6-50C2B, CF6-50C2D, CF6-50CA, CF6-50E, CF6-50E1, CF6-50E2 and 1 more
- Effective: February 10, 1984
- Superseded by: Nothing supersedes this AD
- Product type: Engine
- Amendment: 39-4790
- Registered aircraft: 21 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/05FC31D9DF57CFD28625685F006E4F11.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/84-01-01

## The airworthiness directive

84-01-01 GENERAL ELECTRIC COMPANY: Amendment 39-4790. Applies to CF6-45 and CF6-50 series model turbofan engines. Unless already accomplished, to preclude the possibility of uncontained titanium fires, replace as follows prior to June 1, 1984:

  (a) Compressor stator assembly, including the compressor case, and stage 6 vanes in accordance with FAA approved General Electric CF6-45 and CF6-50 Service Bulletin 72-549.

  (b) Compressor inlet stator vanes and stage 1 and 2 stator vanes in accordance with FAA approved General Electric CF6-45 and CF6-50 Service Bulletin 72-550.

  (c) Compressor blades, stages 3 through 9, and the stage 3-9 spool in accordance with FAA approved General Electric CF6-45 and CF6-50 Service Bulletin 72-551.

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 receivedthese documents from the manufacturer may obtain copies upon request from the General Electric Company, Neumann Way, Cincinnati, Ohio 45215. These documents may also be examined at the FAA, New England Region, 12 New England Executive Park, Burlington, Massachusetts. A historical file on this AD is maintained by the FAA, New England Region Office, Burlington, Massachusetts.

Upon request of the operator, an FAA Maintenance Inspector, subject to prior approval of the Manager, Engine Certification Branch, FAA, New England Region, may adjust the compliance date(s) specified in this AD to permit compliance at an established inspection period of the operator if the request contains substantiating data to justify the increase for that operator.

This amendment becomes effective on February 10, 1984.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS E23EA](https://openairdocs.org/tcds/E23EA): General Electric Company; names 13 of 18 models: CF6-50E1, CF6-50CA, CF6-50A, CF6-50E, CF6-50C2D, CF6-50C1, CF6-50E2B, CF6-50C2…

## 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: 21 (0 by airframe model, 21 by engine model)
- Makers: Mcdonnell Douglas 17, Mcdonnell-Douglas 2, Boeing 1, Bombardier 1

Models with the most aircraft:

- [GE CF6-50C2](https://openairdocs.org/engine/ge-cf6-50c2): 10 aircraft (engine model)
- [GE CF6-50 series](https://openairdocs.org/engine/ge-cf6-50-series): 9 aircraft (engine model)
- [GE CF6-45A2](https://openairdocs.org/engine/ge-cf6-45a2): 1 aircraft (engine model)
- [GE CF6-50C](https://openairdocs.org/engine/ge-cf6-50c): 1 aircraft (engine model)

All 4 models: https://openairdocs.org/ad/84-01-01/models.md
Every aircraft: https://openairdocs.org/ad/84-01-01/aircraft.md

Its text cites no advisory circulars or STCs.

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