# NTSB UNK64X2427: Bell 47G2A, N477RK, Compton, CA, June 21, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 21, 1964
- Place: Compton, CA · COMPTON, CA
- Location: 33.8940° N, 118.2275° W: Placed by OpenAirDocs: center of Compton, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.8940&lon=-118.2275&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report February 4, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 183506
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X2427
- Page: https://openairdocs.org/ntsb/UNK64X2427

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0214  64/6/21    COMPTON CALIF       BELL 47G2A          CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1500                    N477RK              PX-  0  0  0  DUAL                      AGE 44, 4400 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            800 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - COMPTON
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ROLL OVER                                                IN FLIGHT: HOVERING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
        FACTOR(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
```

## Aircraft

- Registration: N477RK (not matched to a registry record)
- Reported make and model: BELL 47G2A
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Compton

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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