# NTSB investigations, MT

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.

Page 12 of 45 · 2,224 cases

## Cases, newest first

- [NTSB SEA00LA005](https://openairdocs.org/ntsb/SEA00LA005.md): Beech S35 · Melstone, MT · Accident · No injuries · Limited investigation · Final report · Oct 21, 1999 · N8811M · Substantial damage
  > Loss of engine power for undetermined reasons.
- [NTSB SEA00LA003](https://openairdocs.org/ntsb/SEA00LA003.md): Maule M-5-235C · Laurel, MT · Accident · No injuries · Limited investigation · Final report · Oct 21, 1999 · N6147M · Substantial damage
  > The pilot's inadequate compensation for wind conditions. Factors include a dust devil/whirlwind at the location where the pilot was trying to land.
- [NTSB SEA00LA006](https://openairdocs.org/ntsb/SEA00LA006.md): Piper PA-24-250 · Bozeman, MT · Accident · Minor injuries · Limited investigation · Final report · Oct 20, 1999 · N8078P · Substantial damage
  > The pilot-in-command's (CFI) failure to take remedial action. Factors include the private pilot letting the airspeed get too low.
- [NTSB SEA99LA154](https://openairdocs.org/ntsb/SEA99LA154.md): Bellanca 7GCBC · Columbus, MT · Accident · No injuries · Limited investigation · Final report · Sep 4, 1999 · N8525 · Substantial damage
  > The pilot's failure to maintain directional control. A wet runway surface was a factor.
- [NTSB SEA99FA150](https://openairdocs.org/ntsb/SEA99FA150.md): Cessna 182E · Ryegate, MT · Accident · 4 fatal · Field investigation · Final report · Aug 28, 1999 · N2886Y · Destroyed
  > The pilot's continued VFR flight into IMC conditions and his failure to maintain clearance from mountainous terrain. Factors include low ceilings and inadequate in-flight planning.
- [NTSB SEA99LA147](https://openairdocs.org/ntsb/SEA99LA147.md): Cessna 180A · Belgrade, MT · Accident · No injuries · Limited investigation · Final report · Aug 21, 1999 · N5359D · Substantial damage
  > Clearance from objects was not maintained during taxiing. Factors include the pilot's inadequate visual lookout.
- [NTSB SEA99FA138](https://openairdocs.org/ntsb/SEA99FA138.md): Beech H-35 · Swan Lake, MT · Accident · Serious injuries · Field investigation · Final report · Aug 10, 1999 · N7975D · Substantial damage
  > Detonation/pre-ignition due to use of improper grade and type of fuel (automotive) and the pilot-in-command's failure to use proper fuel specified by manufacturer's directives.
- [NTSB SEA99LA139](https://openairdocs.org/ntsb/SEA99LA139.md): Cessna 188B · Sidney, MT · Accident · No injuries · Limited investigation · Final report · Aug 9, 1999 · N9085R · Substantial damage
  > The pilot's failure to adequately compensate for wind conditions.
- [NTSB SEA99LA135](https://openairdocs.org/ntsb/SEA99LA135.md): Quicksilver MX II A-HP · Coram, MT · Accident · Minor injuries · Limited investigation · Final report · Jul 20, 1999 · UNREG · Substantial damage
  > The non-rated pilot's failure to maintain clearance from trees while taking off from a gravel pit. Factors include a downdraft.
- [NTSB SEA99LA118](https://openairdocs.org/ntsb/SEA99LA118.md): Piper PA-18-150 · Opheim, MT · Accident · 1 fatal · Limited investigation · Final report · Jul 14, 1999 · N4385Z · Substantial damage
  > The pilot's failure to maintain an airspeed above stall speed (Vs), resulting in a stall/mush into the terrain during a course reversal at the end of an aerial application run. Factors include hilly terrain and high density altitude.
- [NTSB SEA99LA102](https://openairdocs.org/ntsb/SEA99LA102.md): Cessna 182Q · Conner, MT · Accident · No injuries · Limited investigation · Final report · Jul 6, 1999 · N759MZ · Substantial damage
  > The pilot's attempt to take off on an unsuitable runway surface due to standing water on the runway. Factors include standing water on the airstrip.
- [NTSB SEA99LA103](https://openairdocs.org/ntsb/SEA99LA103.md): Piper PA-22 · Billings, MT · Accident · No injuries · Limited investigation · Final report · Jul 1, 1999 · N3513A · Substantial damage
  > The separation of the left main landing gear shock strut for undetermined reasons.
- [NTSB SEA99LA095](https://openairdocs.org/ntsb/SEA99LA095.md): Cessna A188B · Big Sandy, MT · Accident · Minor injuries · Limited investigation · Final report · Jun 24, 1999 · N4788Q · Substantial damage
  > The pilot's failure to maintain clearance between the wire and his aircraft. A transmission wire and downdraft were factors.
- [NTSB SEA99LA091](https://openairdocs.org/ntsb/SEA99LA091.md): Cessna 180G · Kalispell, MT · Accident · No injuries · Limited investigation · Final report · Jun 19, 1999 · N4707U · Substantial damage
  > An encounter with a crosswind gust, which was not possible to compensate for.
- [NTSB SEA99LA087](https://openairdocs.org/ntsb/SEA99LA087.md): Let L-13 · Belgrade, MT · Accident · No injuries · Limited investigation · Final report · Jun 17, 1999 · N70741 · Substantial damage
  > The pilot in command's failure to maintain clearance from a parked airplane during his attempt to avoid a person on the runway.
- [NTSB SEA99LA083](https://openairdocs.org/ntsb/SEA99LA083.md): Piper PA-24-250 · Plentywood, MT · Accident · No injuries · Limited investigation · Final report · Jun 9, 1999 · N5309P · Substantial damage
  > The pilot's failure to ensure that the landing gear were properly down and locked for landing.
- [NTSB SEA99LA081](https://openairdocs.org/ntsb/SEA99LA081.md): D. Wayne Smith Wayncraft 14 · Libby, MT · Accident · 1 fatal · Limited investigation · Final report · Jun 6, 1999 · N58WS · Substantial damage
  > Collision with terrain for undetermined reasons.
- [NTSB SEA99LA078](https://openairdocs.org/ntsb/SEA99LA078.md): Cessna 182K · Kalispell, MT · Accident · No injuries · Limited investigation · Final report · May 22, 1999 · N2656R · Substantial damage
  > A loss of engine power for undetermined reasons. Rough terrain was a factor.
- [NTSB SEA99LA061](https://openairdocs.org/ntsb/SEA99LA061.md): Eugene Hughes Lancair IV · Butte, MT · Accident · No injuries · Limited investigation · Final report · May 8, 1999 · N124GH · Substantial damage
  > The pilot's improper flare.
- [NTSB SEA99LA050](https://openairdocs.org/ntsb/SEA99LA050.md): Piper PA-18 · Boulder, MT · Accident · No injuries · Limited investigation · Final report · Apr 10, 1999 · N4036E · Substantial damage
  > The pilot-in-command's failure to maintain directional control after encountering a dust-devil during landing rollout, resulting in a ground loop and collapse of the main landing gear. Factors include the dust-devil.
- [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 SEA99LA017](https://openairdocs.org/ntsb/SEA99LA017.md): Champion 7ECA · Jardine, MT · Accident · No injuries · Limited investigation · Final report · Nov 27, 1998 · N8306V · Substantial damage
  > The pilot-in-command's failure to maintain adequate clearance with trees and terrain. Contributing factors were unfavorable winds, mountainous terrain and trees.
- [NTSB SEA99LA008](https://openairdocs.org/ntsb/SEA99LA008.md): Cessna 172K · Dillon, MT · Accident · No injuries · Limited investigation · Final report · Oct 26, 1998 · N736VR · Substantial damage
  > The student pilot-in-command's failure to maintain directional control. Contributing factors were rough terrain and crosswind conditions.
- [NTSB SEA99LA004](https://openairdocs.org/ntsb/SEA99LA004.md): Piper PA-18-150 · Billings, MT · Accident · No injuries · Limited investigation · Final report · Oct 20, 1998 · N335PA · Substantial damage
  > Directional control was not maintained. Inadequate remedial action was a factor.
- [NTSB SEA99LA003](https://openairdocs.org/ntsb/SEA99LA003.md): Beech 99 · Missoula, MT · Accident · Minor injuries · Limited investigation · Final report · Oct 17, 1998 · N299GL · Substantial damage
  > The pilot-in-command's delayed remedial action in response to the co-pilot's improper landing flare, and the co-pilot's application of excessive (full nose-up) trim during the landing flare as taught in the operator's initial aircrew training program. Factors…
- [NTSB SEA99LA001](https://openairdocs.org/ntsb/SEA99LA001.md): Aerospatiale SA-315B · Big Sky, MT · Accident · Minor injuries · Limited investigation · Final report · Oct 5, 1998 · N5803J · Destroyed
  > The failure of the ground handlers (chokers) to follow procedures, and separation of the tail rotor system. Contributing factors were incorrect long line hook (size), jamming of the hook release, trees and gusty wind conditions.
- [NTSB SEA98LA192](https://openairdocs.org/ntsb/SEA98LA192.md): Mayala Dragonfly · Avon, MT · Accident · Minor injuries · Limited investigation · Final report · Sep 30, 1998 · N4478V · Destroyed
  > Failure of the engine crankshaft aft oil seal resulting in the loss of engine oil, and rough terrain during the forced landing.
- [NTSB SEA98LA189](https://openairdocs.org/ntsb/SEA98LA189.md): Cessna 172D · Ronan, MT · Accident · No injuries · Limited investigation · Final report · Sep 29, 1998 · N2479Y · Substantial damage
  > The pilot's failure to attain adequate airspeed during liftoff from a soft field takeoff. Factors include high density alttiude.
- [NTSB SEA98LA193](https://openairdocs.org/ntsb/SEA98LA193.md): Cessna T-50 · Missoula, MT · Accident · No injuries · Limited investigation · Final report · Sep 27, 1998 · N6HS · Substantial damage
  > A quick drain was open due to the pilot's inadequate preflight.
- [NTSB SEA98LA195](https://openairdocs.org/ntsb/SEA98LA195.md): Evarts Kitfox IV 1200 · Sula, MT · Accident · No injuries · Limited investigation · Final report · Sep 26, 1998 · N992WY · Substantial damage
  > An excessive brake application by the pilot. Factors included a narrow landing area, the pilot's failure to maintain directional control during a 180-degree taxi turn, and a tailwind.
- [NTSB SEA98LA167](https://openairdocs.org/ntsb/SEA98LA167.md): Cessna 180 · Anaconda, MT · Accident · No injuries · Limited investigation · Final report · Aug 15, 1998 · N9115C · Substantial damage
  > A ground-loop resulting from the pilot's inadequate remedial action while attempting to correct for an inadvertent loss of directional control during the landing roll. Factors include the loss of directional control and attempting to land with a tailwind.
- [NTSB SEA98LA166](https://openairdocs.org/ntsb/SEA98LA166.md): Cessna 175 · Missoula, MT · Accident · No injuries · Limited investigation · Final report · Aug 15, 1998 · N8512X · Substantial damage
  > A complete loss of crankcase oil due to a missing oil filler tube followed by the failure of a connecting rod. Factors include encountering a small pine tree during the landing roll.
- [NTSB SEA98FA161](https://openairdocs.org/ntsb/SEA98FA161.md): Cessna 177 · Red Lodge, MT · Accident · 1 fatal · Field investigation · Final report · Aug 3, 1998 · N2213Y · Destroyed
  > The pilot's failure to maintain adequate altitude over, or clearance with, mountainous terrain during night visual flight rules flight. Factors included night lighting conditions and mountainous terrain.
- [NTSB SEA98LA150](https://openairdocs.org/ntsb/SEA98LA150.md): Piper PA-18 · Columbus, MT · Accident · Minor injuries · Limited investigation · Final report · Jul 26, 1998 · N1252C · Substantial damage
  > Partial loss of power for undetermined reasons. Factors include the pilot's selection of unsuitable terrain for a precautionary landing.
- [NTSB SEA98LA146](https://openairdocs.org/ntsb/SEA98LA146.md): Garlick UH-1H · Libby, MT · Accident · Serious injuries · Limited investigation · Final report · Jul 24, 1998 · N83NW · Substantial damage
  > A failure of the external load cable, which became entangled in the tail rotor.
- [NTSB SEA98LA143](https://openairdocs.org/ntsb/SEA98LA143.md): McCarty Avid Magnum · Kalispell, MT · Accident · Minor injuries · Limited investigation · Final report · Jul 18, 1998 · N64KM · Substantial damage
  > The pilot's inadequate compensation for the wind conditions. A factor was gusty wind conditions.
- [NTSB SEA98LA142](https://openairdocs.org/ntsb/SEA98LA142.md): Socata Rallye 235E · Kalispell, MT · Accident · No injuries · Limited investigation · Final report · Jul 18, 1998 · N301RA · Substantial damage
  > The pilot-in-command's improper fuel management, resulting in fuel starvation. Related factors were insufficient altitude available for effective remedial action, and lack of suitable terrain for a forced landing.
- [NTSB SEA98LA139](https://openairdocs.org/ntsb/SEA98LA139.md): Wsk Pzl Mielec M18B · Hingham, MT · Accident · No injuries · Limited investigation · Final report · Jul 15, 1998 · N4326M · Substantial damage
  > Restricted aileron travel for undetermined reasons.
- [NTSB SEA98LA136](https://openairdocs.org/ntsb/SEA98LA136.md): Piper PA-32-300 · Great Falls, MT · Accident · No injuries · Limited investigation · Final report · Jul 13, 1998 · CGDBT · Substantial damage
  > The pilot-in-command's improper remedial action and overload of the nose landing gear. Contributing factors were gusty winds and a pilot-induced oscillation (porpoise).
- [NTSB SEA98LA132](https://openairdocs.org/ntsb/SEA98LA132.md): Grumman American AA-5B · Chico Hot Sprgs, MT · Accident · Minor injuries · Limited investigation · Final report · Jul 12, 1998 · N28299 · Substantial damage
  > The pilot-in-command's selection of the wrong runway for takeoff. Factors contributing to the accident were high density altitude, rising terrain and a fence post.
- [NTSB SEA98LA118](https://openairdocs.org/ntsb/SEA98LA118.md): Dassault Mystere Falcon 900 · Hamilton, MT · Accident · No injuries · Limited investigation · Final report · Jul 2, 1998 · N900CS · Substantial damage
  > Partial failure of the anti-skid brake system due to contamination.
- [NTSB SEA98LA114](https://openairdocs.org/ntsb/SEA98LA114.md): Cessna 182P · Chico Hot Spgs., MT · Accident · No injuries · Limited investigation · Final report · Jun 29, 1998 · N1878M · Substantial damage
  > The pilot's inadequate remedial action while attempting to compensate for a change in crosswind velocity. Factors include a crosswind, hills near the runway, and high vegetation (weeds) near the runway.
- [NTSB SEA98LA112](https://openairdocs.org/ntsb/SEA98LA112.md): Aviat Husky A-1 · Triple R Ranch, MT · Accident · No injuries · Limited investigation · Final report · Jun 28, 1998 · N7XJ · Substantial damage
  > The pilot's misjudgment of distance and his failure to initiate a go-around. A factor was the high density altitude.
- [NTSB SEA98LA110](https://openairdocs.org/ntsb/SEA98LA110.md): Aeronca 7-AC · Thompson Falls, MT · Accident · No injuries · Limited investigation · Final report · Jun 25, 1998 · N82834 · Substantial damage
  > The instructor's inadequate remedial action with the application of excessive brake pressure.
- [NTSB SEA98FA105](https://openairdocs.org/ntsb/SEA98FA105.md): Cessna 340 · Lincoln, MT · Accident · 1 fatal · Field investigation · Final report · Jun 19, 1998 · N88JH · Destroyed
  > The pilot's improper or inadequate use of the aircraft's weather avoidance equipment, resulting in penetration of a Level 4 thunderstorm and subsequent loss of aircraft control from which the pilot did not recover. Factors included a thunderstorm and the…
- [NTSB SEA98FA100](https://openairdocs.org/ntsb/SEA98FA100.md): Aero Commander 680FL · Helena, MT · Accident · 1 fatal · Field investigation · Final report · Jun 17, 1998 · N446JR · Destroyed
  > The pilot's failure to maintain the correct altitude while turning inbound during a procedure turn to the ILS final approach course. Factors include hilly/mountainous terrain and clouds in the area where the course reversal was performed.
- [NTSB SEA98LA091](https://openairdocs.org/ntsb/SEA98LA091.md): Stephens Vortex · Chinook, MT · Accident · 1 fatal · Limited investigation · Final report · Jun 9, 1998 · N9261N · Destroyed
  > The pilot's failure to maintain aircraft control for an undetermined reason.
- [NTSB SEA98FA089](https://openairdocs.org/ntsb/SEA98FA089.md): Mooney M20A · Canyon Creek, MT · Accident · 1 fatal · Field investigation · Final report · Jun 7, 1998 · N1048B · Destroyed
  > The design stress limits of the aircraft was exceeded. The pilot's inadequate preflight planning/preparation, lack of an instrument rating, poor weather evaluation and low ceilings and mountain obscuration were factors.
- [NTSB SEA98FA078](https://openairdocs.org/ntsb/SEA98FA078.md): Piper PA-31T1 · Great Falls, MT · Accident · 2 fatal · Field investigation · Final report · May 19, 1998 · N121BE · Destroyed
  > The flight crew's failure to maintain aircraft control.
- [NTSB SEA98LA073](https://openairdocs.org/ntsb/SEA98LA073.md): Aero Commander 500-A · Billings, MT · Accident · No injuries · Limited investigation · Final report · May 9, 1998 · N9382R · Substantial damage
  > Failure of the main landing gear strut outer-body to inner-body needle bearing from the lack of lubrication and the development of corrosion. An inadequate manufacturer's inspection program was a factor.

Next page: https://openairdocs.org/ntsb.md?state=MT&page=13

## 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'
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?page=12&state=MT

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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.