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General Information

Data Source:                          NTSB AVIATION ACCIDENT/INCIDENT DATABASE
   Report Number:                        DEN90LA097 
   Local Date:                           04/21/1990
   Local Time:                           10:58 CDT
   State:                                ND    
   City:                                 GRAND FORKS                        
   Airport Name:                         GRAND FORKS INTL         
   Airport Id:                           GFK   
   Event Type:                           ACCIDENT
   Injury Severity:                      MINOR  
   Report Status:                        FINAL      
   Mid Air Collision:                    NO 

Operations Information

Category of Operation:                GENERAL AVIATION       
   Aircraft Type:                        AIRPLANE       
   Aircraft Damage:                      SUBSTANTIAL      
   Phase of Flight:                      560 APPROACH                                          
   Aircraft Make/Model:                  MUDRY CAP-10-B                  
   Operator Doing Business As:                                         
   Operator Name:                        UNIVERSITY OF NORTH DAKOTA    
   Operator Code:                            
   Operator:                                                                       
   Owner Name:                           UNIVERSITY OF NORTH DAKOTA    

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 POWER LOSS WAS DUE TO VAPOR LOCK IN THE INLET FUEL 
   LINE TO THE ELECTRIC BOOST PUMP. SUBSEQUENT ENGINE TEST RUN WAS 
   SUCCESSFUL.

Sequence of Events

Occurrence #: 1  353 LOSS OF ENGINE POWER (TOTAL) - NON-MECHANICAL
   Phase of Operation: 564 APPROACH - VFR PATTERN - FINAL APPROACH

           Findings
           Subject - Modifier - Personnel Cause/Factor

   1a.   15102(S) - 1173(M)  Cause
         FUEL SYSTEM, LINE - OVERTEMPERATURE

   Occurrence #: 2  180 FORCED LANDING
   Phase of Operation: 552 DESCENT - EMERGENCY

           Findings
           Subject - Modifier - Personnel Cause/Factor


   Occurrence #: 3  300 NOSE OVER
   Phase of Operation: 572 LANDING - ROLL

           Findings
           Subject - Modifier - Personnel Cause/Factor

   1a.   19200(S) - 2415(M)  Factor
         TERRAIN CONDITION - NONE SUITABLE

Probable Cause

AN OVER TEMPERATURE OF THE INLET FUEL LINE RESULTING IN FUELSTARVATION 
   (VAPOR LOCK) IN THE FUEL INJECTION SYSTEM.  A FACTOR IN THE ACCIDENT 
   WAS THE LACK OF A SUITABLE LANDING AREA.

Aircraft Information

Number of Seats:                      2  
   Aircraft Use:                         INSTRUCTIONAL      
   Type of Operation:                    14 CFR 91 
   Domestic/International:                            
   Passenger/Cargo:                                        
   Registration Number:                  64UV  
   Air Carrier Operating Certificates:   
   Aircraft Fire:                        NONE

                  Injuries
          Fatal  Serious  Minor  None
   Crew      0       0       2      0
   Pass      0       0       0      0
   Other     0       0       0      0
   Invlvd    0       0       2      0

   Landing Gear:                         TRICYCLE-FIXED
   Certificated Maximum Gross Weight:    1600
   Engine Make:                          LYCOMING     
   Engine Model:                         IO-360-B2F   
   Number of Engines:                    1 
   Engine Type:                          RECIPROCATING-FUEL INJECTED 

Environment/Operations Information

Basic Weather Conditions:             VISUAL METEOROLOGICAL CONDITIONS (VMC)  
   Wind Direction (deg):                 190
   Wind Speed (knots):                   16
   Visibility (sm):                      15
   Visibility RVR (ft):                  0
   Visibility RVV (sm):                  0
   Cloud Height Above Ground Level (ft): 0
   Visibility Restrictions:              NONE
   Precipitation Type:                   NONE
   Light Condition:                      DAYLIGHT
   Departure Airport Id:                     
   Departure City:                       
   Departure State:                        
   Destination Airport Id:               GFK 
   Destination City:                     
   Destination State:                      
   Flight Plan Filed:                    NONE
   ATC Clearance:                        NONE
   VFR Approach/Landing:                 FORCED LANDING
   Event Location:                       OFF AIRPORT/AIRSTRIP

Pilot-in-Command

Certificates:                         COMMERCIAL, FLIGHT INSTRUCTOR
   Ratings:
     Plane:                              SINGLE ENGINE LAND, MULTIENGINE LAND
     Non-Plane:                          NONE
     Instrument:                         AIRPLANE
   Had Current BFR:                      YES
   Months Since Last BFR:                12 
   Medical Certificate:                  CLASS 1
   Medical Certificate Validity:         VALID MEDICAL-WITH WAIVERS/LIMITATIONS

              Flight Time (Hours)
   Total       :   1010  Last 24 Hrs :    4
   Make/Model  :    470  Last 30 Days:   69
   Instrument  :     41  Last 90 Days:  110
   Multi-Engine:     51  Rotorcraft  :    0