Simon Gunson
Member
ADSB is a broadcast signal from the aircraft that gets updated every half second. The radar transponder is what replies to an SSR interrogation, not the ADSB. Both get turned off however when the transponder is selected off.
If this aircraft went down in the South China Sea, why has there been no floating wreckage found?
Apologies for my error however an ADS-B response from the aircraft was picked up continuously until 17:27 UTC
I am not suggesting at all that it went down in the South China Sea.
The oil rig worker Mike McKay did not say that either.
It is entirely possible the aircraft was turned around in response to one problem and a cascading series of problems like an oxygen fed cockpit electrical fire resulted in melting of the fuselage and an out-rush of flames for 10-15 seconds. Fire will not sustain at 35,000ft, therefore if established on a southerly heading on autopilot, the crew would lose consciousness in 30 seconds or so deprived of their oxygen masks.