# AD 74-14-08: Turbine Blades

- Type: Airworthiness directive
- Status: Current
- Products: General Electric CF6-6D and CF6-6D1
- Effective: July 12, 1974
- Superseded by: Nothing supersedes this AD
- Product type: Engine
- Amendment: 39-1894
- Registered aircraft: 11 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/57EABAAA9F50D1738625685B005A22B3.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/74-14-08

## The airworthiness directive

74-14-08 GENERAL ELECTRIC: Amendment 39-1894. Applies to Models CF6-6D, 6D1, and 6H Turbofan Engines.

Compliance required by September 30, 1974.

To prevent expulsion from the engine of fifth stage low pressure turbine blades, unless already accomplished, install improved blade retainer P/N 9083M19P07 per the instructions of General Electric Service Bulletin (CF6-6) 72-399 Revision 1 dated March 20, 1974, or subsequent FAA approved revision.

This amendment becomes effective July 12, 1974.

## 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 2 of 18 models: CF6-6D, CF6-6D1

## 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: 11 (0 by airframe model, 11 by engine model)
- Makers: Boeing 6, Mcdonnell Douglas 3, Airbus Industrie 2

Models with the most aircraft:

- [GE CF6-6 series](https://openairdocs.org/engine/ge-cf6-6-series): 9 aircraft (engine model)
- [GE CF6-6D](https://openairdocs.org/engine/ge-cf6-6d): 2 aircraft (engine model)

All 2 models: https://openairdocs.org/ad/74-14-08/models.md
Every aircraft: https://openairdocs.org/ad/74-14-08/aircraft.md

Its text cites no advisory circulars or STCs.

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