# NTSB LAX70F0171: Bell 47D1, N9673Z, Santa Ana, CA, October 10, 1969

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 10, 1969
- Place: Santa Ana, CA · SANTA ANA, CA
- Location: 33.7368° N, 117.8829° W: Placed by OpenAirDocs: center of Santa Ana, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.7368&lon=-117.8829&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 17, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 187145
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX70F0171
- Page: https://openairdocs.org/ntsb/LAX70F0171

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3139  69/10/10   SANTA ANA,CALIF     BELL 47D1           CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1510                    N9673Z              PX-  0  0  0  AIR TAXI-PASSG            AGE 36, 689 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            220 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          SANTA ANA,CALIF             SANTA ANA,CALIF
        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 - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - FUEL EXHAUSTION
           PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- AUTOROTATIVE LDG DOWN SLOPE INSTEAD OF SIDE SLOPE.
```

## Aircraft

- Registration: [N9673Z](https://openairdocs.org/deregistered/N9673Z-2018-06-08), registration cancelled 2018-06-08, S/N WH5010, built 1964 (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

## Other investigations on N9673Z (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 LAX76FVA18](https://openairdocs.org/ntsb/LAX76FVA18), Jan 1, 1976: Bell 47D-1 (N9673Z), Capistrano, CA, 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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