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Swissair 111

Printed page 2. PDF page 14.

the transmission. The pilots indicated that the radio transmission was meant to be an internal communication only; the transmission had referred to the Air Conditioning Smoke checklist (see Appendix B - Swissair Air Conditioning Smoke Checklist). 5 All altitudes below
Open final report at PDF page 14TSB A98H0003: In-flight fire leading to collision with water

Swissair 111

Printed page 33. PDF page 45.

activated with a push-to-talk rocker switch. One position of the rocker switch is used for internal communication, and the other position is used for transmitting over the external VHF and HF radios. Additional internal communication is provided through a flight
Open final report at PDF page 45TSB A98H0003: In-flight fire leading to collision with water

Swissair 111

Printed page 288. PDF page 300.

cockpit, they were in cruise flight and were not wearing boom microphones. Although the internal communications between the pilots were recorded through the CAM, the conversations were difficult to hear and decipher. There was a marked improvement in recording quality
Open final report at PDF page 300TSB A98H0003: In-flight fire leading to collision with water

Swissair 111

Printed page 73. PDF page 85.

background ATS radio communications emanating from the cockpit speaker. The pilots' internal verbal communication was mostly in the Swiss-German language. 1.11.2 Recorder Installation Power Requirements The CVR was powered by the 115 V right emergency AC bus and the FD
Open final report at PDF page 85TSB A98H0003: In-flight fire leading to collision with water

Swissair 111

Printed page 259. PDF page 271.

microphone were difficult to decipher. When pilots use boom microphones, deciphering internal cockpit CVR communications becomes significantly easier; however, the use of boom microphones is not required by regulation for all phases of flight. Nor is it common practice
Open final report at PDF page 271TSB A98H0003: In-flight fire leading to collision with water

Swissair 111

Printed page 118. PDF page 120.

the contract with the original service provider was terminated in favour of the use of internal resources. The human factors division, in close association with the flight analysis division takes care of instructor training. The type of communication has evolved
Open official document at PDF page 120Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447