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NTSB Report
April 21, 1990 · Avions Mudry CAP10B · N64UV
Grand Forks, ND
Overview
Report Status
Probable Cause
Event Type
Accident
Date
April 21, 1990
Injury Outcomes
2 injuries (2 minor injuries)
Location
Grand Forks, ND
Aircraft
Avions Mudry CAP10B
Tail Number
N64UV
Operator
University of North Dakota
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
DEN90LA097
N64UV SUSTAINED SUBSTANTIAL DAMAGE DURING AN EMERGENCY LANDING, IN A FIELD NEAR THE GRAND FORKS INTERNATIONAL AIRPORT, NORTH DAKOTA. DURING FINAL APPROACH TO LANDING, THE AIRCRAFT ENGINE SUDDENLY STOPPED. THE INSTRUCTOR TOOK OVER THE CONTROLS. HE SAID THE ENGINE DID NOT RESTART AND HE WAS FORCED TO LAND ON AN UNSUITABLE LANDING SURFACE. DURING THE LANDING ROLL THE AIRCRAFT NOSED OVER. INSPECTION OF THE ENGINE INDICATED THAT THE POER LOSS WAS DUE TO VAPOR LOCK IN THE INLET FUEL LINE TO THE ELECTRIC BOOST PUMP. SUBSEQUENT ENGINE TEST RUN WAS SUCCESSFUL.
NTSB Probable Cause
AN OVER TEMPERATURE OF THE INLET FUEL LINE RESULTING IN FUEL STARVATION (VAPOR LOCK) IN THE FUEL INJECTION SYSTEM. A FACTOR IN THE ACCIDENT WAS THE LACK OF A SUITABLE LANDING AREA.
Full Narrative
N64UV SUSTAINED SUBSTANTIAL DAMAGE DURING AN EMERGENCY LANDING, IN A FIELD NEAR THE GRAND FORKS INTERNATIONAL AIRPORT, NORTH DAKOTA. DURING FINAL APPROACH TO LANDING, THE AIRCRAFT ENGINE SUDDENLY STOPPED. THE INSTRUCTOR TOOK OVER THE CONTROLS. HE SAID THE ENGINE DID NOT RESTART AND HE WAS FORCED TO LAND ON AN UNSUITABLE LANDING SURFACE. DURING THE LANDING ROLL THE AIRCRAFT NOSED OVER. INSPECTION OF THE ENGINE INDICATED THAT THE POER LOSS WAS DUE TO VAPOR LOCK IN THE INLET FUEL LINE TO THE ELECTRIC BOOST PUMP. SUBSEQUENT ENGINE TEST RUN WAS SUCCESSFUL.
Flight
Event TypeAccident
Event Time10:58 CDT
Nearest AirportMark Andrews Grand Forks (0nm N)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAvions Mudry CAP10B
Tail NumberN64UV
Aircraft CategoryAir
DamageSubstantial
OperatorUniversity of North Dakota
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · IO-360-B2F · Reciprocating · 180
Seats2
People & Injuries
Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 40 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind190° @ 16 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point34 C
Altimeter30.00 inHg
Observation Time16:00
Weather SourceWFAC