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Thu, Oct 07, 2010

AD: Agusta Helicopters

AD NUMBER: 2010-20-21

MANUFACTURER: Agusta S.p.A. (Agusta) Model A109E Helicopters
SUBJECT: Airworthiness Directive 2010-20-21

SUMMARY: This amendment adopts a new airworthiness directive (AD) for Agusta Model A109E helicopters. This AD results from a mandatory continuing airworthiness information (MCAI) AD issued by the European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community. The MCAI AD states that after a report of an electrical failure, an investigation revealed inadequate functioning of the 35 amperes (Amps) battery bus (BATT BUS) circuit breaker that was not within design requirements. The actions specified in this AD are intended to replace the 35 Amps circuit breaker with a 50 Amps circuit breaker and replace the wires with oversized ones to prevent an electrical failure, loss of electrical power, and subsequent loss of control of the helicopter.

FMI: http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/9699DF76573E935C862577B30055A6B8?OpenDocument

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