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Tue, Dec 06, 2011

AD: Eurocopter France

AD NUMBER: 2011-21-18

MANUFACTURER: Eurocopter France Model EC 120B Helicopters
SUBJECT: Airworthiness Directive 2011-21-18
ACTION: Final rule

SUMMARY: This amendment adopts a new airworthiness directive (AD) for the Eurocopter France Model EC 120B helicopters.

This AD requires modifying the pilot cyclic control friction device by replacing a certain thrust washer with two thrust washers. This AD is prompted by an incident in which the pilot encountered a sudden restriction of the cyclic control movement during flight. The actions specified by this AD are intended to prevent jamming of a pilot cyclic control stick and subsequent loss of control of the helicopter.

DATES: Effective December 20, 2011.

FMI: AD

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