DAYTONA BCH SHR, FL, USA
N90985
BELLANCA 7KCAB
WHILE FLYING OFFSHORE SOUTHBOUND AT AN ALT OF 300-400 FT, THE BANNER TOWING BELLANCA PASSED TO THE RT, THE LAST OF A FLT OF FOUR BANNER TOWING SUPER CUB ACFT CRUISING AT ABOUT 40 MPH, PLACING THE ACFT CLOSER TO SHORE. WITH A QUARTERING TAILWIND, THE PLT INITIATED A 'VERY TIGHT' RT TURN TO RETURN NORTHBOUND. DURING THE TURN, THE ACFT DID WHAT WAS DESCRIBED AS A WING OVER & WHILE DESCENDING EASTBOUND WITH THE BANNER ATTACHED, THE MAIN GEAR CONTACTED A WAVE CAUSING THE ACFT TO NOSE INTO THE WATER. EXAMINATION OF THE ACFT & ENG REVEALED NO EVIDENCE OF FAILURE OR MALFUNCTION OF EITHER THE FLT CONTROLS OR ENG. THE BANNER RELEASE MECHANISM WAS EXAMINED & THERE WAS NO EVIDENCE OF FAILURE OR MALFUNCTION. THE MINIMUM ALT FOR BANNER TOWING OTHER THAN FOR PICKUP'S AND DROP'S IS 500 FT WHEN AUTHORIZED BY ATC.
IN-FLIGHT LOSS OF CONTROL WHILE MANEUVERING TO REVERSE DIRECTION DUE THE FAILURE OF THE PILOT TO MAINTAIN ADEQUATE AIRSPEED DURING THE 'STEEP TURN.'
Source: NTSB Aviation Accident Database
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