Renton Airport
Aircraft Accident/Incident Report

Renton, Washington 98055
Friday, April 29, 1983 14:05 PDT

NTSB Narrative Summary Released at Completion of Accident

THE ACFT WAS TAKING OFF FOR A 1 HOUR ENGINE RUN-IN FOLLOWING A TOP OVERHAUL. AFTER LIFTOFF THE ENGINE BEGAN A GRADUAL POWER LOSS AND ROUGH RUNNING. THE PILOT WAS TRYING TURNING BACK TO THE RUNWAY TO LAND WHEN TOTAL POWER LOSS OCCURRED. THE ACFT HAD TURNED 45 DEGREES WHEN THE NOSE FELL THROUGH, THE WINGS ROTATED 180 DEGREES TO THE LEFT AND THE ACFT IMPACTED NOSE FIRST ON THE RUNWAY. THE MECHANIC WHO PERFORMED THE REMOVAL AND REINSTALLATION OF THE CYLINDERS FOR THE TOP OVERHAUL WAS OCCUPYING THE LEFT SEAT. THE MAINTENANCE SUPERVISOR WAS THE PILOT-IN-COMMAND IN THE RIGHT SEAT. THE LOCKING NUT ON THE #1 CYLINDER EXHAUST VALVE ADJUSTING SCREW WAS FOUND LOOSE AND THE ADJUSTING SCREW HAD BACKED OUT OF THE ROCKER ARM BY PUSHROD ACTION DURING TAKEOFF, NEGATING ROCKER ARM ACTION AND EXHAUST VALVE OPENING. THE LOCKING NUTS FOR ALL OF THE OTHER VALVE ADJUSTING SCREWS WERE FOUND PROPERLY TORQUED.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 4/29/1983
Event Day of the Week Friday
Time of Event 1405
Event Time Zone Pacific Daylight Time
Event City RENTON
Event State WASHINGTON
Event Country --
Zipcode of the event site 98055
Event Date Year 1983
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport RENTON
Event Location Nearest Airport ID RNT
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 29
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1400 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID RNT
Elevation of weather observation facility 29
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 20
Air Temperature at event time (in degrees celsius) 18
Dew Point at event time (in degress fahrenheit) 11
Wind Direction (degrees magnetic) 150
Variable Wind Indicator Unknown
Wind Speed (knots) 10
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 Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 244
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 20404
Date of most recent change to record Jan 2 2001 9:15AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N67140
NTSB Number SEA83FA093
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BEECH
Aircraft Model 77
Aircraft Series Identifier 77
Aircraft Serial Number WA66
Certified Max Gross Weight 1675
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
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 Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Dec 3 1982 12:00AM
Airframe hours since last inspection 103
Airframe Hours 679
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name MCEWEN THOMAS KENNETH
Aircraft Owner Street Address 839 132ND STREET NE
Aircraft Owner City BELLEVUE
Aircraft Owner State WA
Aircraft Owner Country
Aircraft Owner Zipcode 98005
Operator is an individual? --
Operator Name FANCHER FLYWAYS
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 243 WEST PERIMETER
Operator City RENTON
Operator State WA
Operator Country
Operator Zip code 98055
Operator Code
Owner has at least one certificate Yes - certificate holder
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) Unknown
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 0
Departure Time Zone
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 Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 15
Runway Length 5379
Runway Width 200
Sight Seeing flight No
Air Medical Flight No
Medical Flight --