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Qantas 72

Printed page 202. PDF page 222.

indicated that the CPU module's data processing stages before and after the data packaging operated normally for the ADR data. The packaging problem was intermittent rather than consistent. In addition, it was very unlikely that each data spike was due
Open official document at PDF page 222ATSB AO-2008-070: In-flight upset, VH-QPA, 7 October 2008

Qantas 72

Printed page 215. PDF page 235.

and reliability objectives. Air data inertial reference unit (ADIRU) 2 and ADIRU 3 operated normally throughout the flight. Although air data inertial reference unit 1 transmitted a significant amount of incorrect data on inertial reference parameters to other
Open official document at PDF page 235ATSB AO-2008-070: In-flight upset, VH-QPA, 7 October 2008

Qantas 72

Printed page 253. PDF page 273.

aircraft systems, including the ADIRUs and electronic flight control system (EFCS), operated normally throughout the testing activities. After the flight, the flight data recorder (FDR), quick access recorder (QAR) and logged test data were analysed. The analysis did n
Open official document at PDF page 273ATSB AO-2008-070: In-flight upset, VH-QPA, 7 October 2008

Qantas 72

Printed page 1. PDF page 21.

scheduled passenger transport service to Perth, Western Australia. The aircraft was operated as Qantas flight 72, and there were 303 passengers, three flight crew (captain, first officer and second officer), and nine cabin crew on board. The captain was the
Open official document at PDF page 21ATSB AO-2008-070: In-flight upset, VH-QPA, 7 October 2008

Qantas 72

Printed page 242. PDF page 262.

manufacturer also conducted additional searches of the AIRMAN database for all A330s that were operated by the operators of QPA and EBA for the period 1 January 2002 to 31 December 2008. Those searches involved a variety of different combinations
Open official document at PDF page 262ATSB AO-2008-070: In-flight upset, VH-QPA, 7 October 2008