# NTSB ANC79DAG32: Navion NA-1, N4586K, Naknek, AK, September 23, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 23, 1978
- Place: Naknek, AK · NAKNEK, AK
- Location: 58.7283° N, 157.0139° W: Placed by OpenAirDocs: center of Naknek, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=58.7283&lon=-157.0139&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 June 28, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 138925
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC79DAG32
- Page: https://openairdocs.org/ntsb/ANC79DAG32

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4375  78/9/23    NAKNEK,AK           NAVION NA-1         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 22, 185
        TIME - 0830                    N4586K              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 70 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - NAKNEK
        DEPARTURE POINT             INTENDED DESTINATION
          NAKNEK,AK                   KING SALMON,AK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           HARD LANDING                                             IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: VALVE ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- NO 4 CYL EXHAUST VALVE GUIDE EXCESSIVELY WORN.
```

## Aircraft

- Registration: [N4586K](https://openairdocs.org/deregistered/N4586K-2012-09-12), registration cancelled 2012-09-12, S/N NAV-4-1586, built 1948 (OpenAirDocs)
- Reported make and model: NAVION NA-1
- Registry model: [Navion NAVION A](https://openairdocs.org/model/navion-navion-a) (registry code 6150104) (OpenAirDocs)
- Registry engine: [Continental E185 series](https://openairdocs.org/engine/continental-e185-series) (registry code 17014, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Naknek

## 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 19780923044649A](https://openairdocs.org/incident/19780923044649A), Sep 23, 1978: Navion NAVIONA, Naknek, AK, Substantial damage. No 4 cyl exhaust valve guide excessively worn.

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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