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Sat, Aug 18, 2012

AD: Sikorsky Aircraft Corporation Helicopters

AD NUMBER: 2012-15-08

PRODUCT: Sikorsky Aircraft Corporation (Sikorsky) Model S-76A helicopters
SUBJECT: Airworthiness Directive 2012-15-08
ACTION: Final Rule

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-76A helicopters to require modifying the electric rotor brake (ERB) and inserting changes into the "Normal Procedures" and "Emergency Procedures" sections of the Rotorcraft Flight Manual (RFM). This AD was prompted by a fire in the main gearbox area as a result of a hot electric rotor brake (ERB). The actions are intended to prevent overheating of the ERB, ignition of the ERB hydraulic fluid, a fire in the main gearbox area, and subsequent loss of control of the helicopter.

DATES: This AD is effective September 21, 2012.

FMI: AD 

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