# NTSB LAX67A0100: Bensen B-8M, N2257C, George Afb, CA, April 22, 1967

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 22, 1967
- Place: George Afb, CA · GEORGE AFB, CA
- Location: 34.5947° N, 117.3842° W: Placed by OpenAirDocs: center of George Air Force Base, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=34.5947&lon=-117.3842&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 17, 1967
- Report: Brief approved by the director
- NTSB case key (mKey): 117730
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX67A0100
- Page: https://openairdocs.org/ntsb/LAX67A0100

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0151  67/4/22  NR.GEORGE AFB CALIF   BENSEN B-8M         CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, FL.INSTR.,
        TIME - 1715                    N2257C              PX-  0  0  0  TEST                      AGE 44, 5092 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            2 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - EL MIRAGE DRY LKE
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: PROPELLER                       IN FLIGHT: NORMAL CRUISE
           ROLL OVER                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - PROPELLER AND ACCESSORIES: BLADES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           PILOT IN COMMAND - IMPROPER LEVEL OFF
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
                                  PROP/ENGINE VIBRATION
        REMARKS- THE CAUSE OF PROPELLER FAILURE WAS UNDETERMINED.
```

## Aircraft

- Registration: [N2257C](https://openairdocs.org/deregistered/N2257C-2013-05-16), registration cancelled 2013-05-16, S/N 1H, built 1967 (OpenAirDocs)
- Reported make and model: BENSEN B-8M
- Registry model: [Bensen B-8M](https://openairdocs.org/model/bensen-b-8m) (registry code 1300516) (OpenAirDocs)
- Registry engine: [Mcculloch 4318A&E/0-100](https://openairdocs.org/engine/mcculloch-4318a-e-0-100) (registry code 43101, reciprocating) (OpenAirDocs)
- Category: Gyroplane, amateur-built
- Engines: reciprocating
- Damage: Substantial damage
- Airport: El Mirage Dry Lke

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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