AD 2016-09-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Turbomeca | S | Airworthiness Directives; Turbomeca S.A. Turboshaft Engines |
Unsafe Condition
Crack on the front face of the 3rd stage turbine wheel between two balancing lugs, likely caused by a geometric singularity introduced during the embodiment of Turbomeca mod AB 173 or AB 208.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform a one-time inspection of the front surface of the 3rd stage turbine wheel for a groove using Turbomeca S.A. Service Bulletin No. 283 72 0811, Version A. If the wheel passes inspection, no further action is required. If it fails, remove and replace the part.
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Compliance Time
Within 1,000 engine hours after the effective date of this AD or at the next piece part exposure of the 3rd stage turbine wheel, whichever comes first.
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Affected Aircraft
All Turbomeca S.A. Astazou XIV B and XIV H turboshaft engines with 3rd stage turbine wheel, part number 0 265 25 700 0 or 0 265 25 706 0, installed, if the engine incorporates Turbomeca modification AB-173 or AB-208.
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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