AD 92-21-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Honeywell International Inc. | TFE731-2 | GARRETT ENGINE DIVISION, A DIVISION OF THE ALLIED SIGNAL AEROSPACE COMPANY Model TFE731-2, -3, -3A, -3AR, and -3R Engines |
| engine | Honeywell International Inc. | TFE731-3 | GARRETT ENGINE DIVISION, A DIVISION OF THE ALLIED SIGNAL AEROSPACE COMPANY Model TFE731-2, -3, -3A, -3AR, and -3R Engines |
| engine | Honeywell International Inc. | TFE731-3A | GARRETT ENGINE DIVISION, A DIVISION OF THE ALLIED SIGNAL AEROSPACE COMPANY Model TFE731-2, -3, -3A, -3AR, and -3R Engines |
| engine | Honeywell International Inc. | TFE731-3AR | GARRETT ENGINE DIVISION, A DIVISION OF THE ALLIED SIGNAL AEROSPACE COMPANY Model TFE731-2, -3, -3A, -3AR, and -3R Engines |
| engine | Honeywell International Inc. | TFE731-3R | GARRETT ENGINE DIVISION, A DIVISION OF THE ALLIED SIGNAL AEROSPACE COMPANY Model TFE731-2, -3, -3A, -3AR, and -3R Engines |
Unsafe Condition
Low Pressure Turbine (LPT) Rotor Disks with specified part numbers and serial numbers listed in ASB TFE731-A72-3474 may cause an uncontained engine failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove affected third stage LPT rotor disks at next access to turbine rotor assembly or before 100 hours time in service after AD effective date, whichever comes first. Replace with serviceable disk following ASB TFE731-A72-3474. Alternative methods may be approved by FAA.
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Compliance Time
next access to the turbine rotor assembly or before accumulating 100 hours time in service after the effective date of this AD, whichever occurs first
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Affected Aircraft
Garrett Engine Division Model TFE731-2, -3, -3A, -3AR, -3R engines with LPT rotor disks P/N 3072068-X, 3072544-X, 3073015-X, or 3073115-X, serial numbers per ASB TFE731-A72-3474, installed on various aircraft models.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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