Summary
We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 777-200 and -300 series airplanes equipped with Rolls-Royce Model RB211-Trent 800 engines. This proposed 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 proposed AD would require repetitive inspections of the EEC wire bundles and clips, and corrective actions if necessary. We are proposing this AD to address the unsafe condition on these products.