# NTSB LAX67A0026: Bell 47D1, N93067, Quartz Hill, CA, September 1, 1966

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: September 1, 1966
- Place: Quartz Hill, CA · QUARTZ HILL, CA
- Location: 34.6520° N, 118.2159° W: Placed by OpenAirDocs: center of Quartz Hill, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=34.6520&lon=-118.2159&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report April 21, 1967
- Report: Brief approved by the director
- NTSB case key (mKey): 121534
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX67A0026
- Page: https://openairdocs.org/ntsb/LAX67A0026

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0878   66/9/1    QUARTZ HILL CALIF   BELL 47D1           CR-  0  1  0  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 1550                    N93067              PX-  0  0  0  PRACTICE                  AGE 34, 1500 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            23 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - QUARTZ HILL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           MISCELLANEOUS ACTS,CONDITIONS - SIMULATED CONDITIONS
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
           PILOT IN COMMAND - MISJUDGED SPEED AND ALTITUDE
           PILOT IN COMMAND - EXERCISED POOR JUDGMENT
        REMARKS- DEVELOPED HIGH SINK RATE.PILOT DID NOT ATTEMPT A POWER RECOVERY.
```

## Aircraft

- Registration: [N93067](https://openairdocs.org/aircraft/N93067), registered now, S/N 5501, built 1965 (OpenAirDocs)
- Reported make and model: BELL 47D1
- Registry model: [Bell 47D1](https://openairdocs.org/model/bell-47d1) (registry code 1180802) (OpenAirDocs)
- Registry engine: [Franklin 6V4 series](https://openairdocs.org/engine/franklin-6v4-series) (registry code 27033, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Quartz Hill

## Other investigations on N93067 (5)

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 ERA14LA099](https://openairdocs.org/ntsb/ERA14LA099), Jan 21, 2014: Bell 47D1 (N93067), Pell City, AL, substantial damage. Probable cause: The pilot’s use of an improper clutch engagement procedure, which resulted in clutch glazing, slippage, and, ultimately, the in-flight disengagement of the clutch and a loss of rotor rpm.…
- [NTSB MIA92LA069](https://openairdocs.org/ntsb/MIA92LA069), Jan 27, 1992: Bell 47D1 (N93067), Cross City, FL, substantial damage. Probable cause: PARTIAL LOSS OF ENGINE POWER DUE TO UNDETERMINED REASONS AND UNSUITABLE TERRAIN ENCOUNTERED DURING THE AUTOROTATIVE LANDING.
- [NTSB MIA90LA023](https://openairdocs.org/ntsb/MIA90LA023), Nov 2, 1989: Bell 47D1 (N93067), Loxahatchee, FL, substantial damage. Probable cause: FAILURE OF THE PILOT TO MAINTAIN ROTOR RPM AFTER PULLING UP FROM A SWATH RUN. A RELATED FACTOR WAS THE PRESENCE OF TREES.
- [NTSB FTW85LA043](https://openairdocs.org/ntsb/FTW85LA043), Nov 4, 1984: Bell 47D1 (N93067), Terlingua, TX, substantial damage
- [NTSB FTW82DA189](https://openairdocs.org/ntsb/FTW82DA189), May 20, 1982: Bell 47D-1 (N93067), Harrisburg, AR, 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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