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Thu, Nov 29, 2012

AD: The Boeing Company Airplanes (777)

AD NUMBER: 2012-23-06

PRODUCT: Certain Boeing Model 777 airplanes.
SUBJECT: Airworthiness Directive 2012-23-06
ACTION: Final Rule

SUMMARY:  This AD was prompted by reports of failure of wire support clamps in the forward section of the aft pressure bulkhead. This AD requires a detailed inspection of the clamps on the power feeder cable of the auxiliary power unit (APU) to determine if certain clamps are installed, and related investigative and corrective actions if necessary.

The FAA is issuing this AD to prevent failure of the clamp, which could result in wire chafing and potential arcing and consequent fire in section 48 (a flammable fluid leakage zone) or heat damage to the APU power feeder cable, insulation blankets, or pressure bulkhead.

DATES: This AD is effective December 31, 2012.

FMI: AD

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