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April 10, 1993 · Taylorcraft BL-65 · N29553
Spokane, WA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
April 10, 1993
Injury Outcomes
2 injuries (2 minor injuries)
Location
Spokane, WA
Aircraft
Taylorcraft BL-65
Tail Number
N29553
Operator
Murphy Vaugh E
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
SEA93LA092
DURING THE INITIAL CLIMBOUT THE ENGINE BEGAN RUNNING ROUGH AND THE PILOT ELECTED TO RETURN TO THE AIRPORT TO LAND DUE TO BUILDINGS AND POWER LINES IN HIS CLIMBOUT FLIGHT PATH. THE PILOT REPORTED THAT 'DUE TO THE TIGHTNESS OF THE TURN TO MISS AN AIRPORT BUILDING THE AIRPLANE LOST SUFFICIENT ALTITUDE AND AIRSPEED AND STALLED.' SUBSEQUENT EXAMINATION OF THE AIRCRAFT'S ENGINE REVEALED THAT THE NUMBER 4 CYLINDER EXHAUST VALVE SEAT HAD FAILED AND NO COMPRESSION COULD BE ACHIEVED FROM THE CYLINDER.
NTSB Probable Cause
FAILURE OF THE NUMBER 4 CYLINDER EXHAUST VALVE SEAT AND THE INADVERTENT STALLING OF THE AIRCRAFT BY THE PILOT IN COMMAND. FACTORS CONTRIBUTING TO THE ACCIDENT WERE BUILDINGS AND POWER LINES.
Full Narrative
DURING THE INITIAL CLIMBOUT THE ENGINE BEGAN RUNNING ROUGH AND THE PILOT ELECTED TO RETURN TO THE AIRPORT TO LAND DUE TO BUILDINGS AND POWER LINES IN HIS CLIMBOUT FLIGHT PATH. THE PILOT REPORTED THAT 'DUE TO THE TIGHTNESS OF THE TURN TO MISS AN AIRPORT BUILDING THE AIRPLANE LOST SUFFICIENT ALTITUDE AND AIRSPEED AND STALLED.' SUBSEQUENT EXAMINATION OF THE AIRCRAFT'S ENGINE REVEALED THAT THE NUMBER 4 CYLINDER EXHAUST VALVE SEAT HAD FAILED AND NO COMPRESSION COULD BE ACHIEVED FROM THE CYLINDER.
Flight
Event TypeAccident
Event Time14:55 PDT
Nearest AirportFelts Field (0nm N)
Runway21
Runway Length4500 ft
Runway Width150 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftTaylorcraft BL-65
Tail NumberN29553
Aircraft CategoryAir
DamageSubstantial
OperatorMurphy Vaugh E
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-145-B2 · Reciprocating · 65
Seats2
People & Injuries
Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 21 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind300° @ 8 kt
Visibility15 sm
CeilingBroken clouds 3000 ft
Temperature / Dew Point48 / 39 C
Altimeter29.00 inHg
Weather SourceWIT