# NTSB CHI79FEP68: Bakeng Duce, N9659A, Oskhosh, WI, July 29, 1979

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 29, 1979
- Place: Oskhosh, WI · OSKHOSH, WI
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report December 14, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 133694
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI79FEP68
- Page: https://openairdocs.org/ntsb/CHI79FEP68

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3235  79/7/29    OSKHOSH,WI          BAKENG DUCE         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 42, 1300
        TIME - 1100                    N9659A              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 8 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - WITTMAN
        DEPARTURE POINT             INTENDED DESTINATION
          MICHIGAN CITY,IN            OSKHOSH,WI
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN DIRECTIONAL CONTROL
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
```

## Aircraft

- Registration: [N9659A](https://openairdocs.org/aircraft/N9659A), registered now, S/N 1006, built 1978 (OpenAirDocs)
- Reported make and model: BAKENG DUCE
- Registry model: [Boessenkool-Helmich BAKENG DUCE](https://openairdocs.org/model/boessenkool-helmich-bakeng-duce) (registry code 0565089) (OpenAirDocs)
- Registry engine: [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series) (registry code 41506, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Wittman

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19790729030829A](https://openairdocs.org/incident/19790729030829A), Jul 29, 1979: Amtrbg BAKENGDUCE, Oshkosh, WI, Substantial damage. Pilot lost directional control of airplane on landing roll. Acft ground-looped. Collapsed landing gear.

## Other investigations on N9659A (1)

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.

- [NTSB DEN87DTI02](https://openairdocs.org/ntsb/DEN87DTI02), Sep 21, 1987: Bakeng Deuce (N9659A), Gillette, WY, 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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