# NTSB SEA78DA042: Cessna 170A, N1780D, Billings, MT, July 9, 1978

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: July 9, 1978
- Place: Billings, MT · BILLINGS, MT
- Location: 45.7833° N, 108.5007° W: Placed by OpenAirDocs: center of Billings, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.7833&lon=-108.5007&mi=10
- Phase of flight: [Uncontrolled descent](https://openairdocs.org/ntsb-phases/650) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report August 22, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 141320
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA78DA042
- Page: https://openairdocs.org/ntsb/SEA78DA042

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1619   78/7/9    BILLINGS,MT         CESSNA 170A         CR-  1  0  0  MISCELLANEOUS             COMMERCIAL, AGE 49, 1900
        TIME - 0215                    N1780D              PX-  0  0  0  OTHER                     TOTAL HOURS, 500 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          PORT ANGELES,WA             PORT ANGELES,WA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
           PILOT IN COMMAND - INCAPACITATION
           MISCELLANEOUS ACTS,CONDITIONS - PILOT FATIGUE
           MISCELLANEOUS ACTS,CONDITIONS - HYPOXIA
        REMARKS- NON-STOP,CLOSED-CIRCUIT DIST RECORD ATMT OF 3080MI.CRASHED APRX 22HRS AFTR TKOF.NO OXYGEN,HIGH ALT
```

## Aircraft

- Registration: [N1780D](https://openairdocs.org/deregistered/N1780D-1984-01-25), registration cancelled 1984-01-25, S/N 20223 (OpenAirDocs)
- Reported make and model: CESSNA 170A
- Registry model: [Cessna 170A](https://openairdocs.org/model/cessna-170a) (registry code 2072304) (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 19780709019139A](https://openairdocs.org/incident/19780709019139A), Jul 9, 1978: Cessna 170A, Billings, MT, Destroyed. Non-stop,closed-circuit dist record atmt of 3080MI.crashed aprx 2 aftr tkof. No oxygen,high alt

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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