Malaysia Airlines mystery: expert answers questions

How long can a plane float? Can its transpondersbe turned off and, if so, why? Why aren't jetliners equipped with security cameras?

The disappearance ofMalaysia Airlines FlightMH370has raised many questionssome of which retired fighter pilot and aviation expert Jock Williams fielded on Friday for CBC Toronto.

• Key developments in Malaysia Airlines FlightMH370search
• How could Malaysia Airlines FlightMH370go off the radar?

Williams appeared live on CBC Toronto's supper-hour newscast, and later took questions online for some 90 minutes, touching on topics including satellite images, black boxes and the possibility that the missing Boeing 777 washijacked.

Williams is a pilot with more than 50 years of flying experience. He is a retired fighter pilot for the Royal Canadian Air Force and was a flight safety inspector for Transport Canada.

Hisweb chat remains online below.