# NTSB SEA68A0039: Convair 340T, N73120, Great Falls, MT, November 1, 1967

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: November 1, 1967
- Place: Great Falls, MT · GREAT FALLS, MT
- Location: 47.5025° N, 111.3000° W: Placed by OpenAirDocs: center of Great Falls, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.5025&lon=-111.3000&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 3 uninjured
- Status: Completed, report May 7, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 113463
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA68A0039
- Page: https://openairdocs.org/ntsb/SEA68A0039

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
1-0061   67/11/1   GREAT FALLS,MONT    CONVAIR 340T        CR-  0  0  3  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 0145                    N73120              PX-  0  0  1                            42, 10486 TOTAL HOURS, 70
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - GREAT FALLS
        OPERATOR - FRONTIER AIRLINES,INC.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           UNDERSHOOT                                               LANDING: INITIAL APPROACH
           COLLIDED WITH: WIRES/POLES                               LANDING: MISSED APPROACH
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED DISTANCE AND ALTITUDE
           INSTRUMENTS/EQUIPMENT AND ACCESSORIES - FLIGHT AND NAVIGATION INSTRUMENTS: ALTIMETERS
        FACTOR(S)
           WEATHER - LOW CEILING
           WEATHER - SNOW
           MISCELLANEOUS ACTS,CONDITIONS - LANDED ON FOAMED RUNWAY
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  SUSPECTED OR KNOWN AIRCRAFT DAMAGE
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OBSCURATION                                               300
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          1/2 MILE OR LESS                                         SNOW
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          FOG                                                       33
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
           60                                                       5
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          IFR                                                      IFR
        REMARKS- CAUSE OF ALTIMETER ERROR UNDTMND.CONTINUED FLT T0 ALTERNATE ARPT.DAMAGED NOSE GR COLLAPSED ON LDG.
```

## Aircraft

- Registration: [N73120](https://openairdocs.org/deregistered/N73120-1988-05-04), registration cancelled 1988-05-04, S/N 3010665 (OpenAirDocs)
- Reported make and model: CONVAIR 340T
- Registry model: [Air Tractor AT-301](https://openairdocs.org/model/air-tractor-at-301) (registry code 0390103) (OpenAirDocs)
- Category: Airplane
- Engines: turbo prop
- Damage: Substantial damage
- Airport: Great Falls

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.