# NTSB investigations, MT: On ground/water encounter with terrain/water

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB SEA06CA182](https://openairdocs.org/ntsb/SEA06CA182.md): Maule M-4-180V · Lewistown, MT · Accident · No injuries · Data collection · Final report · Sep 11, 2006 · N786ST · Substantial damage
  > The airplane inadvertently impacted a coyote hole during the landing roll on unsuitable terrain.
- [NTSB SEA02LA165](https://openairdocs.org/ntsb/SEA02LA165.md): Bellanca 7GCBC · Melstone, MT · Accident · No injuries · Limited investigation · Final report · Aug 25, 2002 · N36596 · Substantial damage
  > The pilot's improper decision to continue a takeoff once it had become apparent that it was questionable whether the aircraft would clear an obstacle at the departure end of the takeoff area. Factors include the pilot's failure to perform pre-takeoff…
- [NTSB SEA02LA140](https://openairdocs.org/ntsb/SEA02LA140.md): Blanik L-13 · Belgrade, MT · Accident · Minor injuries · Limited investigation · Final report · Jul 31, 2002 · N70741 · Substantial damage
  > The glider pilot's improper in-flight planning decision and his failure to attain the proper touchdown point. Contributing to the accident were the inadvertent activation of the speed brakes, the pilot's failure to maintain altitude, the high vegetation and…
- [NTSB SEA01LA107](https://openairdocs.org/ntsb/SEA01LA107.md): Herriford RAF 2000 · Gardiner, MT · Accident · No injuries · Limited investigation · Final report · May 30, 2001 · N2361S · Substantial damage
  > the pilot's failure to rotate the aircraft until he was well past the normal takeoff rotation speed, and his abrupt rotation at this higher speed.
- [NTSB SEA00LA115](https://openairdocs.org/ntsb/SEA00LA115.md): Cessna 182B · Laurel, MT · Accident · No injuries · Limited investigation · Final report · May 29, 2000 · N66KJ · Substantial damage
  > The pilot's selection of unsuitable terrain for the precautionary landing. Wet and soft terrain, and the pilot's failure to maintain directional control of the aircraft during the landing roll were factors.
- [NTSB SEA99LA034](https://openairdocs.org/ntsb/SEA99LA034.md): Cessna 182A · Conner, MT · Accident · No injuries · Limited investigation · Final report · Feb 13, 1999 · N3753D · Substantial damage
  > The pilots delayed remedial action during an aborted landing. Factors include a slush-covered runway.
- [NTSB SEA96LA038](https://openairdocs.org/ntsb/SEA96LA038.md): Beech B100 · Miles City, MT · Accident · No injuries · Limited investigation · Final report · Jan 4, 1996 · N924WS · Substantial damage
  > Failure of airport personnel to properly remove snow from the runway or issue an appropriate notam concerning the runway condition. Factors relating to the accident were: the low light condition at dawn, and the snowbank or berm that was left on the runway.
- [NTSB SEA95GA062](https://openairdocs.org/ntsb/SEA95GA062.md): Bell 206 · Dillon, MT · Accident · No injuries · Final report · Feb 24, 1995 · N2277T · Substantial damage
  > The pilot's selection of a landing site that was not suitable to support the weight of the helicopter. Factors include terrain covered with soft snow.
- [NTSB SEA94LA234](https://openairdocs.org/ntsb/SEA94LA234.md): Cessna A185F · Conrad, MT · Accident · No injuries · Limited investigation · Final report · Sep 7, 1994 · N5387H · Substantial damage
  > The cfi's failure to assure an adequate inspection of the aircraft, including the proper engagement and function of the rudder pedals, prior to the flight.
- [NTSB SEA94LA158](https://openairdocs.org/ntsb/SEA94LA158.md): Cessna A188 · Cut Bank, MT · Accident · No injuries · Limited investigation · Final report · Jun 22, 1994 · N9879V · Substantial damage
  > The pilot's failure to adequately compensate for wind conditions. The crosswind and the ditch were factors.
- [NTSB SEA93LA128](https://openairdocs.org/ntsb/SEA93LA128.md): Beech A23-24 · Havre, MT · Accident · No injuries · Limited investigation · Final report · Jun 4, 1993 · N4741J · Substantial damage
  > The pilot in command misjudged his clearance from a ditch, and his use of improper remedial action.
- [NTSB SEA92LA146](https://openairdocs.org/ntsb/SEA92LA146.md): Cessna 182Q · Melstone, MT · Accident · No injuries · Limited investigation · Final report · Jul 7, 1992 · N97046 · Substantial damage
  > Inadequate in flight planning/decision. Factors to the accident were: unsuitable terrain was selected, rough/uneven terrain and a go around was not performed.
- [NTSB SEA91LA043](https://openairdocs.org/ntsb/SEA91LA043.md): Piper PA-18 · Wolf Point, MT · Accident · No injuries · Limited investigation · Final report · Jan 12, 1991 · N2787P · Substantial damage
  > The inadequate preflight planning and preparation by the pilot in command, and his selection of unsuitable terrain for takeoff. A factor relating to the accident was the snowdrifts in the takeoff area.
- [NTSB DEN89LA065](https://openairdocs.org/ntsb/DEN89LA065.md): Piper PA-18-150 · Medicine Lake, MT · Accident · No injuries · Limited investigation · Final report · Jan 19, 1989 · N83596 · Substantial damage
  > Selection of unsuitable terrain by the pilot, resulting in a collision with snowdrifts during landing ground run.
- [NTSB DEN87LA183](https://openairdocs.org/ntsb/DEN87LA183.md): Cessna T188C · Winnett, MT · Accident · No injuries · Limited investigation · Final report · Jul 8, 1987 · N2058J · Substantial damage
  > During landing on a roadway used by the crop-duster for re-loading chemicals for spraying, the left spray boom contacted vegetation and slewed the acft sideways. The right wing was bent and the propeller was damaged.
- [NTSB DEN87LA030](https://openairdocs.org/ntsb/DEN87LA030.md): Piper PA-12 · Opheim, MT · Accident · No injuries · Limited investigation · Final report · Dec 15, 1986 · N78588 · Substantial damage
  > The plt elected to take off downhill because he said the hill was too steep to try a takeoff uphill even into the wind. He said that just prior to lift off, he hit a snowbank which slowed the acft down. Deeper snow was then contacted and the acft flipped over.
- [NTSB DEN84FA294](https://openairdocs.org/ntsb/DEN84FA294.md): Cessna A185F · Fort Peck, MT · Accident · 1 fatal · Field investigation · Final report · Sep 20, 1984 · CGZWQ · Substantial damage
  > Plt attempted to takeoff from a calm part of reservoir. The wave heights were estimated to be 4 to 6 feet. The arft struck several waves during the takeoff run. The rt wing tip dragged in the water causing the acft to nose over. The acft came to rest…
- [NTSB DEN84LA230](https://openairdocs.org/ntsb/DEN84LA230.md): Sikorsky S-55B · Richey, MT · Accident · No injuries · Limited investigation · Final report · Jul 20, 1984 · N24111 · Substantial damage
  > The pilot stated that he landed in a pasture where he intended to refuel. During the landing roll, one of the wheels dropped into a hole, causing the main rotor blade to flex downward and severe the tailboom.
- [NTSB DEN82DTI09](https://openairdocs.org/ntsb/DEN82DTI09.md): Air Tractor AT-301 · Greenough, MT · Accident · No injuries · Final report · Jan 3, 1982 · N23069 · Substantial damage
  > During takeoff the aircraft struck a snow berm. The aircraft received substantial damage to both wings and prop. The aircraft had been landed on a county road about a week earlier due to deteriorating weather.

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."eventStateOrRegion" = 'MT' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 320)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=320&state=MT

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