Thread: US MQ-9 Reaper struck down over Black Sea by Russian Su-27 fighter jet

Originally Posted by Troy

Transponder includes Mode 4 & Mode 5, which are fitted.

Those are for military use only and not visible to civilian repeater sources like flightradar24.

Originally Posted by bsnub

Those are for military use only and not visible to civilian repeater sources like flightradar24.

My apologies, yes of course these are for military use only. I was just correcting you on the generic "no transponder" issue. Mode 5 provides position data to enable tracking of the flight by friendly forces but is not available for the average Joe.