Flight and Accident Sequence
Immediately after the airplane took off, witnesses heard an abnormal sound from the engine. The engine sound then stopped momentarily and resumed. The aircraft entered a right 180-degree turn. While in the turn, another power interruption occurred before the engine stopped completely. Ground witnesses reported that after the final engine stoppage, the aircraft stalled and spun into the shoreline.
Post-Accident Examination
High tide caused the airplane to shift before it could be inspected. The fuel primer control was found unlocked and extended. The fuel selector was positioned to the right tank. Both main fuel tanks had ruptured on impact. However, the right main tank exhibited significantly more fire damage and hydraulic deformation than the left tank.
Fuel Consumption Analysis
A computation of fuel consumption indicated that approximately 23 gallons of fuel had been used since the airplane was last refueled. The capacity of each main tank was 23 gallons of usable fuel.
Mechanical Findings
No preimpact mechanical failure was found.