# NTSB LAX66A0004: Benson B7, N9643Z, Adelanto, CA, July 10, 1965

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: July 10, 1965
- Place: Adelanto, CA · ADELANTO, CA
- Location: 34.5828° N, 117.4092° W: Placed by OpenAirDocs: center of Adelanto, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=34.5828&lon=-117.4092&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report October 14, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 201537
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX66A0004
- Page: https://openairdocs.org/ntsb/LAX66A0004-201537

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0493  65/7/10  NR.ADELANTO CALIF     BENSON B7           CR-  0  1  0  NONCOMMERCIAL             COMMERCIAL, AGE 36, 500
        TIME - 0835                    N9643Z              PX-  0  0  0  PRACTICE                  TOTAL HOURS, 0 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - EL MIRAGE
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: POWER-ON DESCENT
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED ALTITUDE
        REMARKS- TERRAIN WAS SNOW WHITE LEVEL HARD SAND MAKING JUDGMENT OF HEIGHT DIFFICULT-AIRCRAFT HAD NO ALTIMTR
```

## Aircraft

- Registration: [N9643Z](https://openairdocs.org/deregistered/N9643Z-1971-01-06), registration cancelled 1971-01-06, S/N KC-1 (OpenAirDocs)
- Reported make and model: BENSON B7
- Registry model: [Bensen Gyrocopter B-7](https://openairdocs.org/model/bensen-gyrocopter-b-7) (registry code 13006M6) (OpenAirDocs)
- Category: Helicopter, amateur-built
- Engines: reciprocating
- Damage: Substantial damage
- Airport: El Mirage

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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