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Printed page xv. PDF page 17.
normally during the flight. At 0442:27, the aircraft suddenly pitched nose down. The FCPCs commanded the pitch-down in response to AOA data spikes from ADIRU 1. Although the pitch-down command lasted less than 2 seconds, the resulting forces were sufficientOpen official document at PDF page 17ATSB AO-2008-070: In-flight upset, VH-QPA, 7 October 2008
Printed page label not indexed. PDF page 9.
spikes in angle of attack (AOA) data, the aircraft's flight control primary computers (FCPCs) commanded the aircraft to pitch down. At least 110 of the 303 passengers and nine of the 12 crew members were injured; 12 of the occupantsOpen official document at PDF page 9ATSB AO-2008-070: In-flight upset, VH-QPA, 7 October 2008
Printed page 191. PDF page 211.
elevator movements were in fact commanded by the EFCS's flight control primary computers (FCPCs). More specifically: The FCPCs were designed to command a pitch-down if they detected that the aircraft's angle of attack (AOA) was too high. The relevantOpen official document at PDF page 211ATSB AO-2008-070: In-flight upset, VH-QPA, 7 October 2008