# NTSB OAK71FVG19: Cessna 150, N3937U, Franklin, CA, September 12, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 12, 1970
- Place: Franklin, CA · FRANKLIN, CA
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 24, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 139612
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK71FVG19
- Page: https://openairdocs.org/ntsb/OAK71FVG19

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3712  70/9/12    FRANKLIN,CALIF      CESSNA 150          CR-  0  0  1  INSTRUCTIONAL             STUDENT, AGE 46, 28 TOTAL
        TIME - 0800                    N3937U              PX-  0  0  0  TRAINING                  HOURS, ALL IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - FRANKLIN
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          SACRAMENTO,CALIF            LOCAL                        FRANKLIN,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - ATTEMPTED OPERATION BEYOND EXPERIENCE/ABILITY LEVEL
           WEATHER - UNFAVORABLE WIND CONDITIONS
        FACTOR(S)
           PERSONNEL - OPERATIONAL SUPERVISORY PERSONNEL: INADEQUATE SUPERVISION OF FLIGHT CREW
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        WEATHER BRIEFING - RECIEVED RECORDED BRIEFING BY LFMF RADIO
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  RELATIVE BEARING OF WIND
          NONE                                                     LEFT QUARTERING HEAD WIND 293-337 DEGREES
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          210                                                       14
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- FLT NOT SUPERVISED. 60 DEG L X-WIND GUSTING TO 20K.
```

## Aircraft

- Registration: [N3937U](https://openairdocs.org/deregistered/N3937U-2018-01-04), registration cancelled 2018-01-04, S/N 15061337, built 1965 (OpenAirDocs)
- Reported make and model: CESSNA 150
- Registry model: [Cessna 150E](https://openairdocs.org/model/cessna-150e) (registry code 2071812) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Franklin

## Other investigations on N3937U (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB LAX01LA213](https://openairdocs.org/ntsb/LAX01LA213), Jun 17, 2001: Cessna 150E (N3937U), Burbank, CA, substantial damage. Probable cause: Fuel exhaustion while maneuvering during a banner tow flight due to an inadequate fuel supply. A factor was the pilot's improper preflight preparation.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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