What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Pilots departed oshkosh, WI enroute to an airport south of gary, IN. The pilots elected to fly over lake Michigan approximately 4 to 5 miles off shore. Aircraft was equipped with onboard fuel metering and visible wet line fuel sight gauge. Fuel sight gauge indicated zero fuel but metered fuel indicated 1.3 hours remaining. Pilots continued flight over water until fuel exhaustion. Fuel cap on one fuel tank was missing causing excessive fuel loss. Aircraft fuel metering equipment is a mathematical computation of theoretical fuel burn only. No actual onboard fuel remaining.
As the FAA filed it
(-23) PILOTS DEPARTED OSHKOSH, WI ENROUTE TO AN AIRPORT SOUTH OF GARY, IN. THE PILOTS ELECTED TO FLY OVER LAKE MICHIGAN APPROXIMATELY 4 TO 5 MILES OFF SHORE. AIRCRAFT WAS EQUIPPED WITH ONBOARD FUEL METERING AND VISIBLE WET LINE FUEL SIGHT GAUGE. FUEL SIGHT GAUGE INDICATED ZERO FUEL BUT METERED FUEL INDICATED 1.3 HOURS REMAINING. PILOTS CONTINUED FLIGHT OVER WATER UNTIL FUEL EXHAUSTION. FUEL CAP ON ONE FUEL TANK WAS MISSING CAUSING EXCESSIVE FUEL LOSS. AIRCRAFT FUEL METERING EQUIPMENT IS A MATHEMATICAL COMPUTATION OF THEORETICAL FUEL BURN ONLY. NO ACTUAL ONBOARD FUEL REMAINING.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.