# NTSB MIA66A0112: Bell 47J-2, N73956, Miami, FL, March 29, 1966

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: March 29, 1966
- Place: Miami, FL · MIAMI, FL
- Location: 25.7743° N, 80.1937° W: Placed by OpenAirDocs: center of Miami, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=25.7743&lon=-80.1937&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report October 17, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 172392
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA66A0112
- Page: https://openairdocs.org/ntsb/MIA66A0112

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0288  66/3/29    MIAMI FLA           BELL 47J-2          CR-  0  1  0  MISCELLANEOUS             AIRLINE TRANSPORT, AGE
        TIME - 1730                    N73956              PX-  0  0  0  TEST                      51, 12871 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            1561 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - PRIVATE HELIPORT
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL                                                    TAKEOFF: VERTICAL
        PROBABLE CAUSE(S)
          PILOT-RELEASED UNSECURED COLLECTIVE PITCH CONTROL.
           PILOT IN COMMAND - SPONTANEOUS-IMPROPER ACTION
        FACTOR(S)
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: COLLECTIVE PITCH CONTROL SYSTEM
         FIRE AFTER IMPACT
        REMARKS- UNEXPECTED LIFT OFF.
```

## Aircraft

- Registration: [N73956](https://openairdocs.org/deregistered/N73956-1966-07-26), registration cancelled 1966-07-26, S/N 2842 (OpenAirDocs)
- Reported make and model: BELL 47J-2
- Registry model: [Bell 47J-2](https://openairdocs.org/model/bell-47j-2) (registry code 1181104) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed
- Airport: Private Heliport

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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