# NTSB UNK64X0836: Navion NAV4, N4305K, Concord, CA, March 7, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 7, 1964
- Place: Concord, CA · CONCORD, CA
- Location: 37.9722° N, 122.0016° W: Placed by OpenAirDocs: center of Concord, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.9722&lon=-122.0016&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report August 28, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 185422
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X0836
- Page: https://openairdocs.org/ntsb/UNK64X0836

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0607   64/3/7    CONCORD CALIF       NAVION NAV4         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 44, 3800
        TIME - 1255                    N4305K              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 1202 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        NAME OF AIRPORT - BUCHANAN FIELD
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: CLIMB TO CRUISE
           COLLIDED WITH: ANIMALS                                   LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS
           MISCELLANEOUS ACTS,CONDITIONS - ICE-CARBURETOR
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
```

## Aircraft

- Registration: [N4305K](https://openairdocs.org/aircraft/N4305K), registered now, S/N NAV-4-1305, built 1948 (OpenAirDocs)
- Reported make and model: NAVION NAV4
- Registry model: [Ryan NAVION A](https://openairdocs.org/model/ryan-navion-a) (registry code 6150162) (OpenAirDocs)
- Registry engine: [Continental E225 series](https://openairdocs.org/engine/continental-e225-series) (registry code 17015, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Buchanan 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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