Freaky ADIRU Behaviour Near Perth

As some of you may be aware, on October 7th 2008 a QANTAS A330 traveling from Singapore to Perth was about 154km west of Learmouth, West Australia when it entered a rapid descent, causing unsecured items & people to float up in the cabin, leading to injuries on board. The aircraft declared an emergency and diverted to Learmouth.

The ATSB has released a preliminary finding that states that a fault in one of the Air Data Inertial Reference Units (ADIRU #1) led to the incident. Investigations are continuing and QANTAS have instigated changes in their procedures should the symptoms appear again.

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