# NTSB UNK64X2392: Navion NAV4, N91786, Lewiston, ID, June 20, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 20, 1964
- Place: Lewiston, ID · LEWISTON, ID
- Location: 46.3931° N, 116.9935° W: Placed by OpenAirDocs: center of Lewiston, ID, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=46.3931&lon=-116.9935&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report October 5, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 183430
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X2392
- Page: https://openairdocs.org/ntsb/UNK64X2392

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1731  64/6/20    LEWISTON ID         NAVION NAV4         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 46, 400
        TIME - 1600                    N91786              PX-  0  0  2  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 80 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - LEWISTON
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GEAR RETRACTED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADVERTENTLY RETRACTED GEAR
```

## Aircraft

- Registration: [N91786](https://openairdocs.org/deregistered/N91786-2017-07-12), registration cancelled 2017-07-12, S/N NAV-4-501, built 1947 (OpenAirDocs)
- Reported make and model: NAVION NAV4
- Registry model: [North American NAVION](https://openairdocs.org/model/north-american-navion) (registry code 6150130) (OpenAirDocs)
- Registry engine: [TCM Cont TSIO-520 series](https://openairdocs.org/engine/tcm-cont-tsio-520-series) (registry code 17060, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Lewiston

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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