N690LS Turbo 690B Commander
28SEP21 Accident during aero survey sortie in which the 1975 registered aircraft may have suffered a catastrophic structural failure during the cruise at 15000ft. Appeared to have rapidly reduced ground speed from @200kts to @90 kts, then entered spin to surface level in @1 minute. Any body know more detail or preliminary findings beyond the obvious tragedy regarding the 3 SOBs lost. ?