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Fri, Aug 21, 2015

AD: Airbus Helicopters

AD NUMBER: 2015-17-01

PRODUCT: Eurocopter France Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters.

ACTION: Final Rule

SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2013-21-01 for the products listed above.

AD 2013-21-01 required certain inspections of each tail rotor pitch horn assembly (pitch horn) for a crack, replacing a cracked pitch horn before further flight, and a one-time visual inspection of pitch horns above certain hours time-in-service (TIS).

This new AD retains the requirements of AD 2013-21-01 but requires a repetitive visual inspection for all pitch horns regardless of hours TIS.

This AD was prompted by a report of a crack in the yoke of a pitch horn and is intended to detect a crack in the pitch horn to prevent failure of the pitch horn, loss of the anti-torque function, and subsequent loss of control of the helicopter.

DATES: This AD is effective September 24, 2015.

FMI: AD

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