14 CFR Part 91: General Aviation
Accident occurred Thursday, October 13, 2011 in San Rafael, CA
Probable Cause Approval Date: 05/15/2012
Aircraft: SPINK ROBERT M PIETENPOL AIRCAMPER, registration: N762S
Injuries: 1 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
During the takeoff climb, the engine lost all power. The pilot began troubleshooting steps but was unable to increase the engine power and subsequently performed a forced landing into a marsh. Postaccident examination revealed that the fuel tank supply line screen had been installed at the fuel sump outlet instead of the fuel line outlet, which allowed unfiltered fuel to flow to the carburetor. An elbow fitting in the fuel supply line was partially occluded with plastic fragments and residential pipe sealant tape. Although fuel was found in the gascolator, the high-wing fuel tank design was such that the gascolator most likely filled with fuel via the partially blocked line after the accident.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
A total loss of engine power during the takeoff climb due to fuel starvation, which resulted from the incorrect installation location of the fuel tank supply line screen that allowed debris to partially block the fuel supply line.
HISTORY OF FLIGHT
On October 13, 2011, about 1615 Pacific daylight time, an experimental amateur-built Pietenpol Aircamper, N762S, force landed after a loss of engine power during takeoff from San Rafael Airport, San Rafael, California. The pilot was operating the airplane under the provisions of Title 14 Code of Federal Regulations (CFR) Part 91. The student sport pilot, sole occupant, was not injured. The airplane sustained substantial damage. The local flight departed San Rafael at 1614. Visual meteorological conditions prevailed, and no flight plan had been filed.
Prior to departure, the pilot performed an uneventful carburetor heat and magneto check. He intended to perform practice touch-and-go landings, and during the takeoff climb, the engine speed reduced to idle. He cycled the throttle control, and the engine sputtered. After performing troubleshooting steps, he was unable to increase the engine power. As the airplane began to descend, the pilot maneuvered it under a set of power transmission lines, and performed a forced landing into a marsh. The airplane sustained substantial damage to the lift struts and wings during the accident sequence.
The airplane was of the high-wing parasol type, and was equipped with a Continental O-200 series engine, which was recently installed, and had accrued 23.5 flight hours since overhaul. The airplane was built in 1991, and purchased by the pilot in June 2011.
A fire chief who responded to the accident site, reported that fuel was present in the fuel tank. The airplane was recovered, and an examination was performed by a Federal Aviation Administration (FAA) inspector. Fuel was present in the gascolator, which was free of water. The engine controls were continuous from the cabin through to their respective engine fittings. The carburetor air induction system was free of obstructions; the magnetos were intact, and remained firmly attached to their mounting pads.
Airplane disassembly revealed that the fuel tank screen had been installed over the fuel sump outlet, instead of the fuel line outlet. The elbow fitting below the fuel supply line was subsequently examined, and appeared to be partially occluded with debris. The fitting was examined by the NTSB investigator-in-charge, and contained two 1/4-inch-long epoxy-like fragments, and a wad of material similar in appearance to Teflon pipe sealing tape
SAN RAFAEL, Calif. -- A small plane crashed Thursday afternoon in Marin County, San Rafael Fire Chief Chris Gray said.
The plane went down near the San Rafael Airport at about 4 p.m., he said, and San Rafael fire and rescue units found the plane in a marshy area near McInnis Park Golf Center.
Gray said it appeared that the plane did not hit any structures.
The pilot was the only person aboard the plane, and Gray said at 4:25 p.m. that his condition was being assessed by paramedics.
The cause of the crash had not yet been identified, he said.
SAN RAFAEL -- A pilot taking off from the Smith Ranch Airport in San Rafael this afternoon ditched his plane in a marsh just after takeoff, the Marin County Sheriff's Office said.
The pilot, an unnamed 65-year Novato resident, had just taken off in his self-built GN1 Air Camper at about 4 p.m. when he experienced engine trouble.
He landed in the march uninjured, with moderate damage to the plane, according to Lt. Barry Heying in a media release.
The pilot then climbed out of the plane and walked back to the airport, where responding emergency personnel located him.
The National Safety Board said there will be no investigation into the crash, Heying said.
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