On 4 October 2009, at 1217 Eastern Standard Time, the flight
crew of a SAAB Aircraft Co 340B aircraft, registered VH-SBA noted
abnormal left engine temperature indications during initial
climb-out on a scheduled passenger flight from Wagga Wagga
Aerodrome, New South Wales to Melbourne, Victoria.
The flight crew later reported that they noticed abnormally high
indications from the left engine inter-turbine temperature, before
shutting down the left engine and returning to the aerodrome for
landing. Subsequent inspection of the left engine indicated
internal damage, specifically to the stage 1 compressor section
The left engine damage was the result of the fatigue-related
failure and separation of four of the stage 1 compressor blisk
blades. There was no evidence that material defects or
abnormalities contributed to the failures.