# NTSB UNK64X2009: Cessna 172D, N2331U, Koehn Dry Lke, CA, May 29, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 29, 1964
- Place: Koehn Dry Lke, CA · KOEHN DRY LKE, CA
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 28, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 183788
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X2009
- Page: https://openairdocs.org/ntsb/UNK64X2009

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1490  64/5/29    KOEHN DRY LKE CAL   CESSNA 172D         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 36, 212
        TIME - 1735                    N2331U              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, ALL IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           NOSE OVER/DOWN                                           TAKEOFF: RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
           TERRAIN - WET,SOFT GROUND
```

## Aircraft

- Registration: [N2331U](https://openairdocs.org/deregistered/N2331U-2009-07-14), registration cancelled 2009-07-14, S/N 17249931, built 1962 (OpenAirDocs)
- Reported make and model: CESSNA 172D
- Registry model: [Cessna 172D](https://openairdocs.org/model/cessna-172d) (registry code 2072410) (OpenAirDocs)
- Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N2331U (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 NYC79FA104](https://openairdocs.org/ntsb/NYC79FA104), Sep 20, 1979: Cessna 172D (N2331U), Greenwich, CT, destroyed, 1 fatal

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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