ANZ B763 at Auckland on Jun 9th 2011, engine failure
Last Update: September 5, 2013 / 14:40:22 GMT/Zulu time
Air New Zealand, initially having thought the engine failure was the result of a bird strike, found no evidence of a bird strike and no engine damage and concluded the engine surged. The engine electronic control (EEC) has been replaced and the engine is currently being tested. The EEC will be forwarded to the manufacturer for further testing.
In a final report into another engine shutdown, see Incident: ANZ B744 at Auckland on Sep 18th 2011, engine shut down in flight New Zealands TAIC's reported that the CF6 engine had ingested a bird on May 31st 2011, organic remains were found inside the engine however no anomaly except some tip to tip contact at the stage 4 high pressure compressor blades and the engine was returned to service. On Jun 9th 2011, while climbing through 1500 feet, the engine surged with noticable N1 fluctuations, the engine was throttled back to idle but stalled two more times prompting the crew to shut the engine down. The main engine control (MEC) and engine inlet temperature sensor were removed and sent for analysis but showed no anomaly, however, variable stator vanes were found out of rig. The operator determined that "rigging errors when the MEC was installed in February 2011 reduced the engine stall margin and was [a] significant contributing factor in the engine stall event".
This article is published under license from Avherald.com. © of text by Avherald.com.
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