# NTSB UNK64X0267: Navion B, N5139K, Keiser, AR, January 17, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: January 17, 1964
- Place: Keiser, AR · KEISER, AR
- Location: 35.6742° N, 90.0968° W: Placed by OpenAirDocs: center of Keiser, AR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.6742&lon=-90.0968&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Brief approved by the director
- NTSB case key (mKey): 185526
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X0267
- Page: https://openairdocs.org/ntsb/UNK64X0267

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0132  64/1/17    KEISER ARK          NAVION B            CR-  0  0  1  NONCOMMERCIAL             NO CERTIFICATE, AGE 37,
        TIME - 1200                    N5139K              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  35 TOTAL HOURS, ALL IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE INSPECTION OF AIRCRAFT (MAINTENANCE PERSONNEL)
        FACTOR(S)
           POWERPLANT - ENGINE STRUCTURE: CRANKSHAFT
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- IMPROPER INSTALLATION OF CRANKSHAFT GEAR THREAD SCREWS
```

## Aircraft

- Registration: [N5139K](https://openairdocs.org/aircraft/N5139K), registered now, S/N NAV-4-2039, built 1950 (OpenAirDocs)
- Reported make and model: NAVION B
- 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

## Other investigations on N5139K (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 FTW69F0301](https://openairdocs.org/ntsb/FTW69F0301), Oct 31, 1968: Navion A (N5139K), Walnut Ridge, AR, 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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