reports indicate that the pilots of legacy jet DENY turning off transponder.
and FWIW
in january of 2002, a Delta airlines MD88 had a transponder failure which triggered interception by F16s.
...
interesting note mentioning EKG's "BAnd of brothers". To spoil the ending, it was later found out that the crash was caused by a radio signal interfering with an NDB station, showing station passage prior to actual passage.
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