Abnormal engine indications involving a The Boeing Company 767-277, VH-RMH, 18km N Canberra, NSW on 27 March 1995

Whilst on climb to FL410 the pilot requested a descent to FL270 due to a minor engine problem. A short time later the pilot advised he was shutting down the left engine and requested a return to Sydney for a priority landing. He also requested the aerodrome fire service to be placed on standby. The aircraft subsequently landed without further incident. It was later determined that the engine had suffered a 1st stage turbine blade failure. A metalurgical report subsequently determined that the failure was caused by fatigue crack growth which initiated from a stress concentrator in one of the blade cooling passages. It appeared that the stress concentrator was created during blade manufacture.