What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Experienced ground crew witness observed aircraft pick up a large banner and climb steeply in a normal manner to raise banner from the ground. At approximately 300 feet AGL, at the top of the climb and as the banner was fully lifted off the ground, the aircraft banked momentarily to the right. The nose was observed to begin to fall and then the aircraft entered a flat spin. Pilot released the banner. The aircraft completed at least three flat rotations and then impacted the ground in a flat attitude at approximately 750' southwest of the banner pole location. Within moments the aircraft caught fire. Witness was unable to reach the aircraft in time to extracate either the pilot or passenger.
As the FAA filed it
EXPERIENCED GROUND CREW WITNESS OBSERVED AIRCRAFT PICK UP A LARGE BANNER AND CLIMB STEEPLY IN A NORMAL MANNER TO RAISE BANNER FROM THE GROUND. AT APPROXIMATELY 300 FEET AGL, AT THE TOP OF THE CLIMB AND AS THE BANNER WAS FULLY LIFTED OFF THE GROUND, THE AIRCRAFT BANKED MOMENTARILY TO THE RIGHT. THE NOSE WAS OBSERVED TO BEGIN TO FALL AND THEN THE AIRCRAFT ENTERED A FLAT SPIN. PILOT RELEASED THE BANNER. THE AIRCRAFT COMPLETED AT LEAST THREE FLAT ROTATIONS AND THEN IMPACTED THE GROUND IN A FLAT ATTITUDE AT APPROXIMATELY 750' SOUTHWEST OF THE BANNER POLE LOCATION. WITHIN MOMENTS THE AIRCRAFT CAUGHT FIRE. WITNESS WAS UNABLE TO REACH THE AIRCRAFT IN TIME TO EXTRACATE EITHER THE PILOT OR PASSENGER.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.