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Air France 447

Printed page 3. PDF page 5.

protection and stall warning 43 1.6.12 REC MAX and OPTI flight levels 45 1.6.13 Onboard weather radar 45 1.7 Meteorological Conditions 46 1.7.1 Meteorological situation 46 1.7.2 Forecast charts 46 1.7.3 Meteorological analyses 47 1.8 Aids to Navigation 48 1.9
Open official document at PDF page 5Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447

Air France 447

Printed page 17. PDF page 19.

a course change of 12 degrees to the left, probably to avoid returns detected by the weather radar. At 2 h 10 min 05, likely following the obstruction of the Pitot probes by ice crystals, the speed indications were incorrect
Open official document at PDF page 19Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447

Air France 447

Printed page 22. PDF page 24.

about 12 degrees in relation to the route. The PNF changed the gain adjustment on his weather radar to maximum, after noticing that it was in calibrated mode. The crew decided to reduce the speed to about Mach 0.8 and
Open official document at PDF page 24Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447

Air France 447

Printed page 45. PDF page 47.

respect to that flight level. Figure 12: Example of a “PROG” page from FMS 1.6.13 Onboard weather radar The Air France Airbus A330's are fitted with Collins WXR 700X-623 type weather radar with a flat antenna (P/N : 622-5132-623). The
Open official document at PDF page 47Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447

Air France 447

Printed page 169. PDF page 171.

not alarming. Note: When the PNF replaced the Captain, he noticed that the gain on the weather radar was set to “calibrated”. It was thus likely that this was already the case before the Captain's departure. At no point did
Open official document at PDF page 171Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447

Air France 447

Printed page 197. PDF page 199.

routes in order to avoid cloud masses. The crew had identified some returns on the weather radar and made a heading change of 12° to the left of their route. At the time of the autopilot
Open official document at PDF page 199Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447