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Fri, Apr 26, 2013

AD: Turbomeca S.A. Turboshaft Engines

AD NUMBER: 2013-08-22

PRODUCT: Certain Turbomeca S.A. Arriel 1A1, 1A2, 1B, 1C, 1C1, 1C2, 1D, 1D1, 1E2, 1K1, 1S, and 1S1 turboshaft engines.
SUBJECT: Airworthiness Directive 2013-08-22
ACTION: Final Rule

SUMMARY: This AD requires daily post-flight checks of the engine tachometer's unit cycle-counting feature. This AD also requires ground-run functional checks within every 1,000 operating hours. This AD was prompted by detailed analysis and review of the accuracy of the engine's tachometer cycle-counting feature.

The FAA is issuing this AD to prevent uncontained engine failure and damage to the helicopter.

DATES: This AD becomes effective May 28, 2013.

FMI: AD

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