# NTSB CHI65A0102: Duane Rock B8M, N261D, Benton Harbor, MI, June 6, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 6, 1965
- Place: Benton Harbor, MI · BENTON HARBOR, MI
- Location: 42.1135° N, 86.4472° W: Placed by OpenAirDocs: center of Benton Harbor, MI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.1135&lon=-86.4472&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 2, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 179170
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI65A0102
- Page: https://openairdocs.org/ntsb/CHI65A0102

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0229   65/6/6    BENTON HARBO MICH   DUANE ROCK B8M      CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 26, 210
        TIME - 0800                    N261D               PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 15 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - ROSS FIELD
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        FACTOR(S)
           PILOT IN COMMAND - IMPROPER COMPENSATION FOR WIND CONDITIONS
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
        REMARKS- AIRCRAFT MUSHED AS PILOT WAS TURNING CLOSE IN   DOWNWIND
```

## Aircraft

- Registration: [N261D](https://openairdocs.org/deregistered/N261D-2019-01-15), registration cancelled 2019-01-15, S/N 2, built 1965 (OpenAirDocs)
- Reported make and model: DUANE ROCK B8M
- Registry model: [Rock Duane BENSEN B-8M](https://openairdocs.org/model/rock-duane-bensen-b-8m) (registry code 130077C) (OpenAirDocs)
- Registry engine: [Mcculloch 4318A&E/0-100](https://openairdocs.org/engine/mcculloch-4318a-e-0-100) (registry code 43101, reciprocating) (OpenAirDocs)
- Category: Helicopter, amateur-built
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Ross Field

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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