Aircraft Accident/Incident Report

West Jordan, Utah 84088
Friday, December 8, 2000 12:45 MST

NTSB Narrative Summary Released at Completion of 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 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 before coming to rest. 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.

NTSB Probable Cause Narrative

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.

Event Information

Type of Event Accident
Event Date 12/8/2000
Event Day of the Week Friday
Time of Event 1245
Event Time Zone Mountain Standard Time
Event City WEST JORDAN
Event State UTAH
Event Country --
Zipcode of the event site 84088
Event Date Year 2000
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1256 Mountain Standard Time
Direction of event from weather observation facility (degrees) 340
Weather Observation Facility ID SLC
Elevation of weather observation facility 4227
Distance of event from weather observation facility (units?) 10
Time Zone of the weather observation MST
Lighting Conditions Day
Lowest Ceiling Height 15000
Lowest Non-Ceiling Height 7000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 6
Air Temperature at event time (in degrees celsius) 39
Dew Point at event time (in degress fahrenheit) 30
Wind Direction (degrees magnetic) 320
Variable Wind Indicator Unknown
Wind Speed (knots) 6
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None --
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 10864
NTSB Notification Source
NTSB Notification Date Dec 8 2000 12:00AM
NTSB Notification Time 1350
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Nov 1 2001 7:36AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N89KD
NTSB Number DEN01LA020
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Thomas
Aircraft Model VP-1
Aircraft Series Identifier VP-1
Aircraft Serial Number 1
Certified Max Gross Weight 828
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? Yes
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name ROBERT R. THOMAS
Aircraft Owner Street Address 196 E. 1900 NORTH
Aircraft Owner City CENTERVILLE
Aircraft Owner State UT
Aircraft Owner Country
Aircraft Owner Zipcode 84014
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code U42
Departure City
Departure State
Departure Country
Departure Time 1243
Departure Time Zone MST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Oct 17 2001 10:40AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --