Shot down by another intruder over Germany. Mosquito NT179 was shot down by a friendly aircraft (Mosquito HK250, 219 Sqn) during a mission to the Utrecht-Dusseldorf area. 29.9.1944
An excerpt from “Identification: Friend or Foe”:
“It was on the way back from Germany that fate turned against the new team; it was then that their aircraft was detected and regarded with suspicion by a ground control interception radar unit of the RAF set up somewhere in liberated territory. Mosquito NT179 was not transmitting IFF—Identification, Friend or Foe—and so GCI was unable to determine whether this was a friendly or enemy plane.
In addition, NT179 approached Brussels on a track and at a height about which there were no friendly movement warnings at the time in question. In other words, for the GCI controller, NT179 was an unidentified and potentially enemy plane, in air force jargon a ‘bogey’.”
Source: https://aviation-safety.net/wikibase/wiki.php?id=165474