# NTSB SEA66A0021: Navion B, N4400K, Judith Gap, MT, September 11, 1965

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: September 11, 1965
- Place: Judith Gap, MT · JUDITH GAP, MT
- Location: 46.6790° N, 109.7534° W: Placed by OpenAirDocs: center of Judith Gap, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=46.6790&lon=-109.7534&mi=10
- Phase of flight: [Uncontrolled descent](https://openairdocs.org/ntsb-phases/650) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report February 24, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 175832
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA66A0021
- Page: https://openairdocs.org/ntsb/SEA66A0021

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0836  65/9/11  NR.JUDITH GAP,MONT.   NAVION B            CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 45, 1713
        TIME - 1510                    N4400K              PX-  1  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 100 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - CONTINUED VFR FLIGHT INTO ADVERSE WEATHER CONDITIONS
           PILOT IN COMMAND - EXERCISED POOR JUDGMENT
        FACTOR(S)
           WEATHER - RAIN
           WEATHER - FOG
           WEATHER - LOW CEILING
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        MISSING AIRCRAFT - LATER RECOVERED
        SKY CONDITION                                            VISIBILITY AT ACCIDENT SITE
          OBSCURATION                                              1/4 MILE OR LESS
        PRECIPITATION AT ACCIDENT SITE                           OBSTRUCTIONS TO VISION AT ACCIDENT SITE
          DRIZZLE                                                  FOG
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          IFR                                                      NONE
        REMARKS- RECOVERY DATE 9-14-65.
```

## Aircraft

- Registration: [N4400K](https://openairdocs.org/deregistered/N4400K-1965-10-25), registration cancelled 1965-10-25, S/N NAV-4-1400 (OpenAirDocs)
- Reported make and model: NAVION B
- Registry model: [Ryan NAVION](https://openairdocs.org/model/ryan-navion) (registry code 6150160) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

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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