# NTSB UNK64X2136: Brantly B2, N5907X, Okla City, OK, June 5, 1964

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: June 5, 1964
- Place: Okla City, OK · OKLA CITY, OK
- Location: 35.4676° N, 97.5164° W: Placed by OpenAirDocs: center of Oklahoma City, OK, within about 14 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.4676&lon=-97.5164&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Completed, report September 1, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 183548
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X2136
- Page: https://openairdocs.org/ntsb/UNK64X2136

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0296   64/6/5    OKLA CITY OKLA      BRANTLY B2          CR-  0  2  0  NONCOMMERCIAL             ATP,FLIGHT INSTR., AGE
        TIME - 1445                    N5907X              PX-  0  0  0  PRACTICE                  47, 8000 TOTAL HOURS, 150
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: DIRT BANK                                 IN FLIGHT: HOVERING
           ROLL OVER                                                LANDING: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
          PERSONNEL-OTHER PLT MISUSED FLT,POWER PLANT CONTLS
        REMARKS- COLLIDED WITH A DAM
```

## Aircraft

- Registration: [N5907X](https://openairdocs.org/deregistered/N5907X-1965-06-02), registration cancelled 1965-06-02, S/N 43 (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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.