Birdwatch Note Rating
2023-11-21 14:35:06 UTC - HELPFUL
Rated by Participant: D5D63FA6EEB3DA0A87033C067D4185BF6AACE52FF5E1DD6941F6DF667A0E697C
Participant Details
Original Note:
Websites such as FlightRadar only show aircraft transmitting on Mode-S, ADS-B, TIS-B, ADS-C. If an aircraft is not visible, it doesn't mean it is flying with the transponder off, but rather it is using other transponder modes like Mode-3C which is picked up only by ATC radars. https://www.flightradar24.com/blog/whats-this-plane-doing-answering-recent-frequently-asked-questions/
All Note Details