# NTSB LAX73FUA26: Bell 47D1, N9637Z, Fountn Vlly, CA, December 9, 1972

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 9, 1972
- Place: Fountn Vlly, CA · FOUNTN VLLY, CA
- Location: 33.7106° N, 117.9511° W: Placed by OpenAirDocs: center of Fountain Valley, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.7106&lon=-117.9511&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report April 3, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 169309
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX73FUA26
- Page: https://openairdocs.org/ntsb/LAX73FUA26

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3898   72/12/9   FOUNTN VLLY,CALIF   BELL 47D1           CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 23, 172
        TIME - 1720                    N9637Z              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 70 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          RIVERSIDE,CALIF             ORANGE CO ARPT
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISMANAGEMENT OF FUEL
           MISCELLANEOUS ACTS,CONDITIONS - INATTENTIVE TO FUEL SUPPLY
           MISCELLANEOUS ACTS,CONDITIONS - FUEL EXHAUSTION
           PILOT IN COMMAND - MISJUDGED ALTITUDE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- LVLD OFF TOO HIGH. R SKID COLLAPSED ON IMPACT.
```

## Aircraft

- Registration: N9637Z (not matched to a registry record)
- Reported make and model: BELL 47D1
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

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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