20050714015409A

(-23) The pilot stated that he had departed runway 27 at the Sequim Valley Airport and after he had selected the landing gear to the up position, the engine lost power as if the mixture had been brought back to the idle cut-off position, and then back to the rich position suddenly. The throttle had remained in the full power position. The pilot stated that he then moved the landing gear to the down position as he contacted the grass to the right side of the runway. Engine power came back to what he felt was full power just prior to making contact with the ground. Prior to the aircraft coming to rest, the left wing contacted the ground, causing buckling on the outboard top wing skin section. The pilot stated that he had preflighted the aircraft in port angeles and run-up completed with no defects noted. The pilot had departed port angeles for Sequim, and picked up the owner of the aircraft. The pilot stated that he was giving dual flight instructions that included slow flight, stalls, and steep turns for approximately 30 minutes. The pilot stated that the aircraft performed normally during the flight from port angeles to Sequim and during the instructional flights.