# NTSB SEA76AS068: Navion A, N313L, Snoqulmie Pass, WA, August 4, 1976

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: August 4, 1976
- Place: Snoqulmie Pass, WA · SNOQULMIE PASS, WA
- Location: 47.4016° N, 121.4110° W: Placed by OpenAirDocs: center of Snoqualmie Pass, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.4016&lon=-121.4110&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report September 28, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 155754
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA76AS068
- Page: https://openairdocs.org/ntsb/SEA76AS068

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2958   76/8/4    SNOQULMIE PASS,WA   NAVION A            CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 43, 320
        TIME - 1730                    N313L               PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 49 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          LEWISTOWN,MT                SILVERDALE,WA                ELLENSBURG,WA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - CONTINUED VFR FLIGHT INTO ADVERSE WEATHER CONDITIONS
           PILOT IN COMMAND - INCAPACITATION
           MISCELLANEOUS ACTS,CONDITIONS - PILOT SUFFERED HEART ATTACK
        FACTOR(S)
           WEATHER - LOW CEILING
           WEATHER - FOG
           TERRAIN - HIGH OBSTRUCTIONS
           MISCELLANEOUS ACTS,CONDITIONS - PILOT FATIGUE
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        MISSING AIRCRAFT - LATER RECOVERED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OBSCURATION                                               100
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          1/4 MILE OR LESS                                         NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          FOG                                                       50
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          240                                                       12
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          IFR                                                      NONE
        REMARKS- CAUTIONED THAT WX WAS NOT ADEQUATE FOR VFR FLT THRU MTN PASSES.WRECKAGE LOCATED 8/6/76.
```

## Aircraft

- Registration: [N313L](https://openairdocs.org/deregistered/N313L-1977-02-11), registration cancelled 1977-02-11, S/N NAV-4-125 (OpenAirDocs)
- Reported make and model: NAVION A
- Registry model: [North American NAVION](https://openairdocs.org/model/north-american-navion) (registry code 6150130) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

## 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 19760804038659A](https://openairdocs.org/incident/19760804038659A), Aug 4, 1976: Navion NAVION*, Snoqulmie Pass, WA, Destroyed. Cautioned that wx was not adequate for VFR flt thru mtn passes. Wreckage located 8/6/76.

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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