# NTSB UNK64X1673: Brantly B2, N5961X, Ampton Bays, NY, May 8, 1964

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: May 8, 1964
- Place: Ampton Bays, NY · AMPTON BAYS, NY
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 uninjured
- Status: Completed, report April 20, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 185080
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X1673
- Page: https://openairdocs.org/ntsb/UNK64X1673

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0956   64/5/8    AMPTON BAYS NY      BRANTLY B2          CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 36, 4000
        TIME - 2200                    N5961X              PX-  0  1  0  BUSINESS                  TOTAL HOURS, UNK/NR IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: VERTICAL
           COLLIDED WITH: TREES                                     IN FLIGHT: EMERGENCY DESCENT
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: CLUTCH ASSEMBLY
        FACTOR(S)
           PILOT IN COMMAND - EXERCISED POOR JUDGMENT
           TERRAIN - HIGH OBSTRUCTIONS
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - SCORED
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
```

## Aircraft

- Registration: [N5961X](https://openairdocs.org/deregistered/N5961X-1972-04-28), registration cancelled 1972-04-28, S/N 103 (OpenAirDocs)
- Reported make and model: BRANTLY B2
- Registry model: [Brantly B-2](https://openairdocs.org/model/brantly-b-2) (registry code 1440502) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: 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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