AD 2002-21-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Honeywell | International Inc | Airworthiness Directives; Honeywell International Inc. TPE331 Series Turboprop and TSE331-3U Series Turboshaft Engines |
| engine | Garrett | Engine Division | Airworthiness Directives; Honeywell International Inc. TPE331 Series Turboprop and TSE331-3U Series Turboshaft Engines |
Unsafe Condition
Reports of six uncontained separations of the second stage turbine wheels associated with obstructed internal cooling holes or passages in the vanes of the second stage turbine stator, which may result in contact and rub into the turbine rotor.
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Required Actions
Replace second stage turbine stator assemblies, part numbers 894528-1, -2, -3, -5, -6, -10, and -11, with serviceable turbine stator assemblies.
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Compliance Time
Before further flight.
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Affected Aircraft
Honeywell International Inc. TPE331 series turboprop and TSE331-3U series turboshaft engines with second stage turbine stator assemblies part numbers 894528-1, -2, -3, -5, -6, -10, and -11.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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