# NTSB UNK64X2269: Bell 47D1, N5511V, Colusa, CA, June 13, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 13, 1964
- Place: Colusa, CA · COLUSA, CA
- Location: 39.2000° N, 122.0095° W: Placed by OpenAirDocs: center of Colusa, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.2000&lon=-122.0095&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report September 2, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 183553
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X2269
- Page: https://openairdocs.org/ntsb/UNK64X2269

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0300  64/6/13    COLUSA CALIF        BELL 47D1           CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 28, 1180
        TIME - 1835                    N5511V              PX-  0  0  2  OTHER                     TOTAL HOURS, 40 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL                                                    TAKEOFF: VERTICAL
           ROLL OVER                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
           PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS
        REMARKS- SIGHTSEEING NEAR GROSS WT TEMP 90 CALM                           02   030
```

## Aircraft

- Registration: [N5511V](https://openairdocs.org/deregistered/N5511V-1968-04-22), registration cancelled 1968-04-22, S/N 200 (OpenAirDocs)
- Reported make and model: BELL 47D1
- Registry model: [Bell 47D1](https://openairdocs.org/model/bell-47d1) (registry code 1180802) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N5511V (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 LAX68A0086](https://openairdocs.org/ntsb/LAX68A0086), Mar 9, 1968: Bell 47D1 (N5511V), Carlsbad, CA, destroyed

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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