Quote:
Originally Posted by Laurent Sanhard
sounds like a silly question, but what if the transponder was shut off in the cockpit , is it possible the aircraft would have been forced to land in another country ie Russia or somewhere remote , surely if it crashed into the ocean , another plane or boat would have reported seeing a fire , surely some debris would have floated to the surface by now ,
did the aircraft disappear from Radar ?? would it still show up on Radar if the transponder was turned off ??
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The aircraft would still appear on the radar but it would not send out its identification anymore. So on the radar it would not appear with its flight number but simply as a dot or something like that.
What it disappears from are radar websites like FlightRadar24 because these websites are not showing real radar information but ADS-B signals. These signals are actively transmitted by the plane if the plane's transponder is on. If the transponder is switched off, the plane doesn't transmit the ADS-B signal anymore.