# NTSB OAK71AP032: Bell 47G-5, N2294W, S.Francisco, CA, February 11, 1971

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: February 11, 1971
- Place: S.Francisco, CA · S.FRANCISCO, CA
- Location: 37.7750° N, 122.4194° W: Placed by OpenAirDocs: center of San Francisco, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.7750&lon=-122.4194&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal, 1 serious
- Status: Completed, report August 31, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 132732
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK71AP032
- Page: https://openairdocs.org/ntsb/OAK71AP032

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0081  71/2/11    S.FRANCISCO,CALIF   BELL 47G-5          CR-  0  1  0  MISCELLANEOUS             COMMERCIAL, FL.INSTR.,
        TIME - 1735                    N2294W              PX-  1  0  0  OTHER PUBLIC              AGE 38, 1301 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            606 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - POLICE HELIPORT
        DEPARTURE POINT             INTENDED DESTINATION
          S.FRANCISCO,CALIF           LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: POWER-ON DESCENT
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED ALTITUDE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SIMULATED CONDITIONS
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
        REMARKS- DURG TERMINATION OF ZERO FWD SPEED AUTOROTATION,ENTERED PWR SETTLING AT ALT TO LOW FOR RECOVERY.
```

## Aircraft

- Registration: [N2294W](https://openairdocs.org/deregistered/N2294W-2015-04-24), registration cancelled 2015-04-24, S/N 7969, built 1969 (OpenAirDocs)
- Reported make and model: BELL 47G-5
- Registry model: [Bell 47G-5](https://openairdocs.org/model/bell-47g-5) (registry code 1181032) (OpenAirDocs)
- Registry engine: [Lycoming VO-435 series](https://openairdocs.org/engine/lycoming-vo-435-series) (registry code 41525, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed
- Airport: Police Heliport

## Other investigations on N2294W (4)

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 LAX91LA013](https://openairdocs.org/ntsb/LAX91LA013), Oct 22, 1990: Bell 47G5 (N2294W), Antarctica, destroyed, 2 fatal. Probable cause: THE PILOT'S FAILURE TO MAINTAIN ON ADEQUATE ALTITUDE WHILE MANEUVERING ABOVE THE WATER.
- [NTSB LAX81DUK02](https://openairdocs.org/ntsb/LAX81DUK02), Sep 4, 1981: Bell 47G-5 (N2294W), Yuma, AZ, substantial damage
- [NTSB LAX74DUJ49](https://openairdocs.org/ntsb/LAX74DUJ49), Apr 6, 1974: Bell 47G-5 (N2294W), Yuma, AZ, substantial damage
- [NTSB LAX74DUJ05](https://openairdocs.org/ntsb/LAX74DUJ05), Jul 27, 1973: Bell 47G-5 (N2294W), Yuma, AZ, 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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