Thun Field Airport
Aircraft Accident/Incident Report

Puyallup, Washington 98023
Saturday, May 28, 1994 8:13 PDT

NTSB Narrative Summary Released at Completion of Accident

THE PILOT ELECTED TO TAKE OFF DURING HIGH SPEED TAXI RUNS AFTER ENCOUNTERING CONTROL DIFFICULTIES. HE ADDED POWER, BUT DID NOT ADD FULL POWER. WHEN HE NOTED HIS SLOW AIRSPEED, HE ADDED FULL POWER AND THE ENGINE SPUTTERED. THE AIRCRAFT MUSHED, THEN STALLED AND IMPACTED THE TERRAIN BEFORE POWER COULD BE REGAINED. LATER TESTING REVEALED THAT THE ELECTRIC BOOST PUMP WAS NOT FUNCTIONING PROPERLY AND INSUFFICIENT FUEL FLOW WAS AVAILABLE AT HIGHER POWER SETTINGS.

NTSB Probable Cause Narrative

AN IMPROPERLY FUNCTIONING FUEL BOOST PUMP.

Event Information

Type of Event Accident
Event Date 5/28/1994
Event Day of the Week Saturday
Time of Event 813
Event Time Zone Pacific Daylight Time
Event City PUYALLUP
Event State WASHINGTON
Event Country --
Zipcode of the event site 98023
Event Date Year 1994
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport THUN FIELD
Event Location Nearest Airport ID 1S0
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 530
Weather Briefing Completeness Unknown
Investigator's weather source Witness
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 4500
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 7
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 210
Variable Wind Indicator Unknown
Wind Speed (knots) 7
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 475
NTSB Notification Source --
NTSB Notification Date May 28 1994 12:00AM
NTSB Notification Time 820
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 6 2000 11:17AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N786RW
NTSB Number SEA94LA143
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 WRAY
Aircraft Model KR-2
Aircraft Series Identifier KR-2
Aircraft Serial Number 7660
Certified Max Gross Weight 1075
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 2
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection May 12 1994 12:00AM
Airframe hours since last inspection 1
Airframe Hours 1
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name WRAY, RICK L.
Aircraft Owner Street Address 1105 K STREET NE
Aircraft Owner City AUBURN
Aircraft Owner State WA
Aircraft Owner Country
Aircraft Owner Zipcode 98002
Operator is an individual? --
Operator Name WRAY, RICK L.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 1105 K STREET NE
Operator City AUBURN
Operator State WA
Operator Country
Operator Zip code 98002
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
Departure City
Departure State
Departure Country
Departure Time 813
Departure Time Zone PDT
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 Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 16
Runway Length 3650
Runway Width 60
Sight Seeing flight No
Air Medical Flight No
Medical Flight --