[edNorth]

Thanks Ferdinando. Yes, Dietrich possibly was this then (he was also "pilot", else he whould not be on Bf 109F doing test flights at Rechlin the following month), he was Dipl.Ing. (at least this is written on cover of logbook) but likely three or four man crew total, I guess, so there could have been other Engineer on board, besides BM and BF. It appears Dietrich was seasoned pilot, these last two were his 4330th (08:15/09:32) and 4331st flights (14:43/15:53).