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NTSB Report
May 17, 1990 · Cunningham Prescott Pusher Prescott P · N58PP
San Diego, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
May 17, 1990
Injury Outcomes
1 injury (1 fatality)
Location
San Diego, CA
Aircraft
Cunningham Prescott Pusher Prescott P
Tail Number
N58PP
Operator
Cunningham Coulter
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
LAX90DUM02
THE PILOT REPORTED THAT IMMEDIATELY AFTER TAKEOFF THE ENGINE LOST POWER. THE AIRCRAFT CRASHED INTO THE SIDE OF A HILL DURING THE ATTEMPT TO RETURN TO THE AIRPORT. EXAMINATION OF THE SPARK PLUG TO THE NO. 3 CYLINDER HAD BURNED/MELTED WITH THE OTHERS INDICATING EXCESSIVE HEAT DAMAGE. THE NO. 3 PISTON WAS FOUND SEIZED ON THE CONNECTING ROD. THE FLOAT IN THE CARBURETOR WAS FOUND SET TO A VERY LEAN CONDITION WITH THE FLOAT CHAMBER VENT LINE PLUGGED/CAPPED OFF. THE TOTAL ENGINE TIME WAS 1.9 HOURS WITH A TOTAL FLIGHT TIME APPROXIMATELY THREE MINUTES.
NTSB Probable Cause
ENGINE FAILURE DUE TO MECHANICAL FAILURE OF HE INTERNAL COMPONENTS TO THE ENGINE.
Full Narrative
THE PILOT REPORTED THAT IMMEDIATELY AFTER TAKEOFF THE ENGINE LOST POWER. THE AIRCRAFT CRASHED INTO THE SIDE OF A HILL DURING THE ATTEMPT TO RETURN TO THE AIRPORT. EXAMINATION OF THE SPARK PLUG TO THE NO. 3 CYLINDER HAD BURNED/MELTED WITH THE OTHERS INDICATING EXCESSIVE HEAT DAMAGE. THE NO. 3 PISTON WAS FOUND SEIZED ON THE CONNECTING ROD. THE FLOAT IN THE CARBURETOR WAS FOUND SET TO A VERY LEAN CONDITION WITH THE FLOAT CHAMBER VENT LINE PLUGGED/CAPPED OFF. THE TOTAL ENGINE TIME WAS 1.9 HOURS WITH A TOTAL FLIGHT TIME APPROXIMATELY THREE MINUTES.
Flight
Event TypeAccident
Event Time09:46 PDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCunningham Prescott Pusher Prescott P
Tail NumberN58PP
Aircraft CategoryAir
DamageDestroyed
OperatorCunningham Coulter
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsFord · V-6 · Reciprocating · 260
Seats4
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 74 · Third Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourceWIT