# NTSB UNK64X1153: Carson C4, N612X, Boston, MA, April 3, 1964

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: April 3, 1964
- Place: Boston, MA · BOSTON, MA
- Location: 42.3584° N, 71.0598° W: Placed by OpenAirDocs: center of Boston, MA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.3584&lon=-71.0598&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report December 29, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 185608
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X1153
- Page: https://openairdocs.org/ntsb/UNK64X1153

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0030   64/4/3    BOSTON MASS         CARSON C4           CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 28, 4000
        TIME - 1600                    N612X               PX-  0  0  1  POLICE PATROL             TOTAL HOURS, 6 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - LOGAN INT
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL                                                    TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
           PERSONNEL - OPERATIONAL SUPERVISORY PERSONNEL: INADEQUATE FLIGHT TRAINING-PROCEDURES
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - DISREGARD OF GOOD OPERATING PRACTICE
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
```

## Aircraft

- Registration: N612X (not matched to a registry record)
- Reported make and model: CARSON C4
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Logan Int

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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