A computer fault on a Qantas Airways Ltd. flight switched off the autopilot and generated false data, causing the jet to nosedive. This failure in the onboard computer system caused the violent drop in altitude on the Qantas Airbus A330-300. The flight control system was supplied by Litton Industries, a subsidiary of Northrop Grumman Corp., Airbus issued a telex late yesterday to airlines that fly A330s and A340s. The fault originated in the main on board computer system which caused other system failure. Airbus has now issued guidelines in case the incident happens again.
Preliminary analysis of the Qantas incident revealed the error occurred in one of the jet's three air data inertial reference units, which caused the autopilot to disconnect.
The crew flew the aircraft manually to the end of the flight,
On 14 October 2008, Mr Julian Walsh, Director, Aviation Safety Investigation, discussed factual information known to the investigation team in a media conference in Canberra City discussing the progress of the investigation.
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