AD 2016-12-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Turbomeca | S | Airworthiness Directives; Turbomeca S.A. Turboshaft Engines |
Unsafe Condition
Crack initiation on the ferrule of the diffuser part number 0298210100, which propagated and led to ferrule rupture, resulting in contact with and puncture of the main fuel supply line, causing a fuel leak and potential engine fire.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Borescope inspect the centrifugal diffuser ferrule, part number 0298210100, prior to accumulating 700 hours, time since new, or time since replacement, or within 30 hours from the effective date of this AD, whichever is later. Repeat the borescope inspection every 300 hours since the last inspection. Remove and replace the diffuser ferrule if any crack, loss of contact between the ferrule and diffuser axial vane, or contact between the injection manifold supply pipe and the diffuser ferrule is found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 hours from the effective date of this AD or prior to accumulating 700 hours, time since new, or time since replacement, whichever is later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Turbomeca S.A. MAKILA 2A and MAKILA 2A1 turboshaft engines with a high-pressure gas generator module (M03) that has modification (mod) TU 52 installed.
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
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