The United States Federal Aviation Administration today issued a final airworthiness directive (AD) instructing operators of most Airbus A330 and A340 models to power down suspect air data inertial reference units (ADIRU) using one specific rotary dial on the panel.
The mandate follows EASA Emergency AD 2008-0225-E of December 18, 2008, which superseded EASA Emergency AD 2008-0203-E of November 19, 2008, issued after a Qantas Airways A330-300 pitched down unexpectedly while in cruise at flight level 370, seriously injuring 14 of the 303 passengers.
The Airbus A340 is also affected due to its cockpit similarity to the A330.
Read the directive here.
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