What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
The banner towing aircraft impacted the ground in a near vertical, left wing low flight attitude and came to rest on its belly facing the opposite direction of travel, approximately 2 sm northeast of Boone Municipal Airport (kbnw), Boone, IA . The banner was found approximately 900' north of the fuselage. Further inspection of the aircraft and engine revealed no anomalies. According to an eye witness,the banner behind the plane was spinning like a kite out of control, then got caught in the corn. The plane dropped the banner then gained a little altitude and then went straight down.
As the FAA filed it
THE BANNER TOWING AIRCRAFT IMPACTED THE GROUND IN A NEAR VERTICAL, LEFT WING LOW FLIGHT ATTITUDE AND CAME TO REST ON ITS BELLY FACING THE OPPOSITE DIRECTION OF TRAVEL, APPROXIMATELY 2 SM NORTHEAST OF BOONE MUNICIPAL AIRPORT (KBNW), BOONE, IA . THE BANNER WAS FOUND APPROXIMATELY 900' NORTH OF THE FUSELAGE. FURTHER INSPECTION OF THE AIRCRAFT AND ENGINE REVEALED NO ANOMALIES. ACCORDING TO AN EYE WITNESS,THE BANNER BEHIND THE PLANE WAS SPINNING LIKE A KITE OUT OF CONTROL, THEN GOT CAUGHT IN THE CORN. THE PLANE DROPPED THE BANNER THEN GAINED A LITTLE ALTITUDE AND THEN WENT STRAIGHT DOWN.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.