Examination of a Failed Rolls-Royce RB211-524 Turbofan Engine


Boeing Commercial Aircraft Group, 747-436, G-BNLD


1.1. History of the flight

On the evening of March 1, 2002, Boeing 747-436 aircraft G-BNLD sustained the failure of the number-3 (right inboard) engine during a scheduled regular passenger transport flight from Sydney to Bangkok. The flight crew experienced vibrations and received an ENG 3 REVERSER engine indicating and crew alerting system (EICAS) message. The crew shut down the number-3 engine and completed checklist items before returning the aircraft to Sydney.

An initial engineering examination found that a fan blade from the number-3 engine had failed and that debris had punctured the engine cowl, the right wing leading and trailing edge flaps and the fuselage; damaging a structural member above the wing root area. The inspection found fractured fasteners and other components beneath the fan cowls and damage to the structure associated with the thrust reverser assembly. Debris from the number-3 engine was also found embedded within the intake cowl of the adjacent number-4 engine.

Publication date: 1 March 2002
Last update 07 April 2014
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