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G-ONEE: electrical failures and unreliable airspeed

Printed page label not indexed. PDF page 42.

procedure for the simultaneous loss of AC buses 1 and 4; however, the crew were aware that all pitot heating had been lost and that unreliable airspeed could occur in icing conditions. The rising cabin altitude led them to initiate
Open official document at PDF page 42AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

Printed page label not indexed. PDF page 1.

resulted in multiple failure messages for the flight crew to manage as well as the loss of all pitot tube heating. The flight crew carried out numerous, concurrent checklists to deal with the system failures, declared a PAN and started
Open official document at PDF page 1AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

Printed page 35. PDF page 37.

1.6.9 Systems function 1.6.9.1 Probe heating The probes that are installed on the aircraft are heated electrically to remove water by vaporisation when the aeroplane is on the ground and to protect them from icing in flight. Three independent Probe
Open official document at PDF page 37Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447

G-ONEE: electrical failures and unreliable airspeed

Printed page 144. PDF page 146.

performance tests, etc). 1.18.1.6.2 Anti-icing certification of the probes In order to cover all the super-cooled water icing conditions specified in appendix C of JAR 25, Airbus has developed a ten-point test table with different static air temperatures (SAT), speeds,
Open official document at PDF page 146Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447