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Wed, Dec 19, 2018

AD: The Boeing Company Airplanes

AD NUMBER: 2018-25-11

PRODUCT: Certain The Boeing Company Model 777- 200 and - 300 series airplanes equipped with Rolls -Royce Model RB211- Trent 800 engines.

ACTION: Final Rule.

SUMMARY:This AD was prompted by reports of inadequate clearance between the thermal protection system (TPS) insulation blankets and the electronic engine control (EEC) wiring, which resulted in damaged wires.

This AD requires repetitive inspections of the EEC wire bundles and clips, and corrective actions if necessary.

DATES: This AD is effective January 18, 2019.

COST: The FAA estimates that this AD affects 55 airplanes of U.S. registry. Operators may incur the following costs in order to comply with this AD:

  • Inspection - Up to 6 work- hours × $85 per hour = $510 per inspection cycle per airplane.

Replacement of EEC wire harness (if necessary)

  • Labor - 1 work- hour × $85 per hour = $85
  • Parts - $8,500
  • Cost per aircraft - $8,585
FMI: AD

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