AD 2015-14-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; GE Aviation Czech s.r.o. Turboprop Engines |
Unsafe Condition
wear or cracking, and subsequent misalignment of the quill shaft of the engine and the power turbine (PT) shaft, may lead to rupture of the quill shaft, overspeed of the PT, and uncontained engine failure.
Required Actions
inspect the reduction gearbox and supporting cone, replace each cracked or worn part with a part eligible for installation
Compliance Time
Within 300 flight hours, or six months after the effective date of this AD, whichever occurs first
Affected Aircraft
GE Aviation Czech s.r.o. M601E-11, M601E-11A, and M601F turboprop engines with the following serial numbers (S/Ns): Model M601E-11: S/Ns 833244, 841289, 852239, 861007, 881217, 884021, 892046, 892219, 894018, 903028, 913038, and 912023. Model M601E-11A: S/Ns 902004 and 883046. Model M601F: S/Ns 912001 and 924002.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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