AD 2008-02-19
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Honeywell | International Inc | Airworthiness Directives; Honeywell International Inc. TFE731-2C, -3B, -3BR, -3C, -3CR, -3D, -3DR, -4R, -5AR, -5BR, -5R, -20R, -20AR, -20BR, -40, -40AR, -40R, and -60 Series Turbofan Engines |
Unsafe Condition
Improperly machined radii in the root of the forward and aft curvic teeth of certain high pressure (HP) turbine rotor discs could lead to uncontained failure of the HP turbine rotor assembly.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove from service HP turbine rotor assemblies with part numbers 3075772-1 and 3060841-1 using a drawdown schedule. Return the affected assemblies to Honeywell for curvic root radius inspection.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the specified drawdown schedule.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Honeywell International Inc. TFE731-2C, -3B, -3BR, -3C, -3CR, -3D, -3DR, -4R, -5AR, -5BR, -5R, -20R, -20AR, -20BR, -40, -40AR, -40R, and -60 series turbofan engines with HP turbine rotor assemblies having part numbers 3075772-1 and 3060841-1.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.