Summary
On December 08, 2000, a Thomas VP-1 (N89KD) was involved in an accident near West Jordan, UT. The accident resulted in 1 serious injury. The aircraft sustained substantial damage.
The National Transportation Safety Board determined the probable cause of this accident to be: The lack of suitable terrain for a forced landing. Contributing factors were the total loss of engine power due to the failure of the pilot to adjust the manual propeller pitch to permit the engine to achieve sufficient rpm for sustained flight, and the subsequent fouling of the spark plugs due to the over rich fuel condition.
On December 8, 2000, at approximately 1245 mountain standard time, a Thomas VP-1 homebuilt airplane, N89KD, was destroyed when it impacted the ground during a forced landing near Salt Lake City Municipal 2 Airport, West Jordan, Utah. The pilot received serious injuries. The pilot/builder was operating the airplane under Title 14 CFR Part 91. Visual meteorological conditions prevailed. No flight plan had been filed for this local personal flight that was originating at the time of the accident.
The pilot said he was flight-testing the newly finished homebuilt airplane. The original plans called for a fixed pitch propeller. The pilot said that he had put a manually adjustable pitch propeller on the airplane, and he had adjusted it for cruise flight.
This accident is documented in NTSB report DEN01LA020. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N89KD.
Accident Details
Probable Cause and Findings
the lack of suitable terrain for a forced landing. Contributing factors were the total loss of engine power due to the failure of the pilot to adjust the manual propeller pitch to permit the engine to achieve sufficient rpm for sustained flight, and the subsequent fouling of the spark plugs due to the over rich fuel condition.
Aircraft Information
Registered Owner (Historical)
Analysis
On December 8, 2000, at approximately 1245 mountain standard time, a Thomas VP-1 homebuilt airplane, N89KD, was destroyed when it impacted the ground during a forced landing near Salt Lake City Municipal 2 Airport, West Jordan, Utah. The pilot received serious injuries. The pilot/builder was operating the airplane under Title 14 CFR Part 91. Visual meteorological conditions prevailed. No flight plan had been filed for this local personal flight that was originating at the time of the accident.
The pilot said he was flight-testing the newly finished homebuilt airplane. The original plans called for a fixed pitch propeller. The pilot said that he had put a manually adjustable pitch propeller on the airplane, and he had adjusted it for cruise flight. He said that once he was airborne, the engine began "lugging," and it quickly lost power. He started a right turn to crosswind, and simultaneously began to perform a forced landing. Subsequently, the airplane struck a building and some transmission wires. The airplane came to rest upright.
Postaccident examination of the engine by an FAA inspector revealed that the spark plugs were wet with fuel. The inspector also found heavy carbon deposits in the exhaust stack.
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# DEN01LA020