# NTSB investigations, 1989, 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.

## Latest cases

- [NTSB DEN90LA035](https://openairdocs.org/ntsb/DEN90LA035.md): Cessna 172P · Billings, MT · Accident · No injuries · Limited investigation · Final report · Dec 27, 1989 · N53432 · Substantial damage
  > The failure of the pilot to maintain directional control during adverse wind conditions.
- [NTSB DEN90LA032](https://openairdocs.org/ntsb/DEN90LA032.md): Piper PA-18-150 · Powderville, MT · Accident · 1 fatal · Limited investigation · Final report · Dec 3, 1989 · N62672 · No damage
  > The pilot in command left the airplane unattended with the engine running. That the pilot's son did not understand the unsafe condition is considered a contributing factor.
- [NTSB DEN90LA018](https://openairdocs.org/ntsb/DEN90LA018.md): Cessna U206B · Billings, MT · Accident · No injuries · Limited investigation · Final report · Nov 7, 1989 · N3481L · Substantial damage
  > Improper planning/decision by the pilot while taxiing during unfavorable wind conditions.
- [NTSB DEN90LA014](https://openairdocs.org/ntsb/DEN90LA014.md): Cessna 206F · Opheim, MT · Accident · No injuries · Limited investigation · Final report · Oct 27, 1989 · N33211 · Substantial damage
  > Pilot's failure to maintain terrain clearance while executing a low pass.
- [NTSB DEN89LA221](https://openairdocs.org/ntsb/DEN89LA221.md): Mooney M20C · Neihart, MT · Accident · Serious injuries · Limited investigation · Final report · Sep 18, 1989 · N3456X · Destroyed
  > VFR flight by the pilot into instrument meteorological conditions (IMC) and his failure to maintain sufficient altitude. Related factors were: the high terrain and adverse weather conditions.
- [NTSB DEN89LA190](https://openairdocs.org/ntsb/DEN89LA190.md): Piper PA-18-125 · Ekalaka, MT · Accident · No injuries · Limited investigation · Final report · Aug 7, 1989 · N1322A · Substantial damage
  > Misjudgement of the proper touchdown point by the pilot, which resulted in an overrun of the landing area and collision with a post. The downhill terrain condition and location of the fence post were related factors.
- [NTSB DEN89FA178](https://openairdocs.org/ntsb/DEN89FA178.md): Beech E35 · Kalispell, MT · Accident · Serious injuries · Field investigation · Final report · Jul 24, 1989 · N3317C · Substantial damage
  > Contaminated fuel system that starved the engine of fuel.
- [NTSB DEN89LA167](https://openairdocs.org/ntsb/DEN89LA167.md): Piper PA-25 · Wh Sulphur Spgs, MT · Accident · No injuries · Limited investigation · Final report · Jul 11, 1989 · N6663Z · Substantial damage
  > The pilot failed to maintain adequate airspeed during an aerial application maneuver and inadvertently allowed the aircraft to mush into the ground. Unfavorable wind and turbulence were considered to be contributing factors.
- [NTSB DEN89DTI03](https://openairdocs.org/ntsb/DEN89DTI03.md): Cessna T188C · Red Lodge, MT · Accident · 1 fatal · Final report · Jul 9, 1989 · N2165J · Destroyed
  > Improper inflight decision by the pilot and his failure to attain sufficient altitude. Rising terrain, high density altitude, and trees were considered to be contributing factors.
- [NTSB DEN89LA172](https://openairdocs.org/ntsb/DEN89LA172.md): Cessna T188C · Fort Benton, MT · Accident · No injuries · Limited investigation · Final report · Jul 7, 1989 · N2802J · Substantial damage
  > Overload failure of the left main landing gear attaching bolts for an unknown reason.
- [NTSB DEN89LA156](https://openairdocs.org/ntsb/DEN89LA156.md): Piper PA-28RT-201T · Red Lodge, MT · Accident · Serious injuries · Limited investigation · Final report · Jul 3, 1989 · N4391A · Substantial damage
  > Inadequate compensation for the wind conditions during landing roll, resulting in a loss of control. Contributing to the accident was the gusty wind condition.
- [NTSB DEN89LA151](https://openairdocs.org/ntsb/DEN89LA151.md): Ercoupe 415C · Ennis, MT · Accident · No injuries · Limited investigation · Final report · Jul 2, 1989 · N3246H · Substantial damage
  > The failure of the pilot to maintain airspeed, which resulted in an inadvertent stall.
- [NTSB DEN89DTI02](https://openairdocs.org/ntsb/DEN89DTI02.md): Musick/Terratorn Tierra II · Lewistown, MT · Accident · 1 fatal · Final report · Jul 2, 1989 · N349SM · Destroyed
  > The unqualified pilot allowed the aircraft to become airborne while taxiing at high speed, he failed to maintain control of the aircraft, and he inadvertently allowed it to enter a stall/spin and crashed. Factors related to the accident were: his failure to…
- [NTSB DEN89DTI01](https://openairdocs.org/ntsb/DEN89DTI01.md): Piper PA-25-235 · Conrad, MT · Accident · 1 fatal · Final report · Jun 20, 1989 · N7001Z · Destroyed
  > The pilot's failure to see the guy wire in time to avoid colliding with it.
- [NTSB DEN89LA163](https://openairdocs.org/ntsb/DEN89LA163.md): Cessna A188B · Fort Benton, MT · Accident · No injuries · Limited investigation · Final report · Jun 15, 1989 · N4971Q · Substantial damage
  > Failure of the tailwheel assembly attaching bolts.
- [NTSB DEN89MA130](https://openairdocs.org/ntsb/DEN89MA130.md): Bell 206L-3 · Big Timber, MT · Accident · 4 fatal · Major investigation · Final report · Jun 2, 1989 · N76KM · Destroyed
  > Failure of the pilot to maintain control of the aircraft during takeoff, due to spatial disorientation, which resulted in a collision with the terrain. Contributing factors were: dark night, pilot's visual perception, inadequate initial training of the pilot…
- [NTSB DEN89LA121](https://openairdocs.org/ntsb/DEN89LA121.md): Cessna 182J · Miles City, MT · Accident · Minor injuries · Limited investigation · Final report · May 19, 1989 · N2774F · Substantial damage
  > The pilot's improper decision to land and attempt to taxi at an airport where strong winds would not permit safe ground handling of the aircraft.
- [NTSB DEN89FA117](https://openairdocs.org/ntsb/DEN89FA117.md): Piper PA-28-140 · Livingston, MT · Accident · Serious injuries · Field investigation · Final report · May 7, 1989 · N7296J · Substantial damage
  > The poor judgement displayed by the pilot when he maneuvered the airplane at extremely low altitude over mountainous terrain. During the flight the pilot misjudged the pull-up required and struck trees.
- [NTSB DEN89LA115](https://openairdocs.org/ntsb/DEN89LA115.md): Cessna 182G · St. Xavier, MT · Accident · No injuries · Limited investigation · Final report · May 3, 1989 · N3410S · Substantial damage
  > The pilot's failure to maintain airspeed while maneuvering for a forced landing following a failure of the number two piston. Contributing to the accident was smoke in the cockpit.
- [NTSB DEN89LA114](https://openairdocs.org/ntsb/DEN89LA114.md): Piper PA-18-150 · Bozeman, MT · Accident · Minor injuries · Limited investigation · Final report · May 3, 1989 · N9858D · Destroyed
  > Improper in-flight planning/decision by the pilot which led to his failure to maintain directional control during the landing. Contributing factors were: use of an unfavorable runway, crosswind, and gusts.
- [NTSB DEN89LA111](https://openairdocs.org/ntsb/DEN89LA111.md): Cessna 170A · Kalispell, MT · Accident · No injuries · Limited investigation · Final report · Apr 19, 1989 · N5414C · Substantial damage
  > The pilot's failure to maintain control of the airplane during the landing flare and rollout. Contributing to the accident was the pilot's lack of proficiency with only 4 hours of flight time in the preceding 90 day period.
- [NTSB DEN89LA106](https://openairdocs.org/ntsb/DEN89LA106.md): Cessna A188B · Rapelje, MT · Accident · No injuries · Limited investigation · Final report · Apr 10, 1989 · N731XG · Substantial damage
  > The inadequate compensation for the wind conditions by the pilot which resulted in a loss of directional control on landing and subsequent collision with a ditch.
- [NTSB DEN89LA094](https://openairdocs.org/ntsb/DEN89LA094.md): Piper PA-18-150 · Great Falls, MT · Accident · No injuries · Limited investigation · Final report · Mar 25, 1989 · N4273Z · Substantial damage
  > The failure of the pilot in compensate adequately for wind conditions, and landing despite having been alerted to wind conditions.
- [NTSB DEN89LA092](https://openairdocs.org/ntsb/DEN89LA092.md): Poehls Bobcat · Billings, MT · Accident · Serious injuries · Limited investigation · Final report · Mar 23, 1989 · N80927 · Destroyed
  > The pilot inadvertently stalled the aircraft at an altitude which was too low to permit recovery.
- [NTSB DEN89LA079](https://openairdocs.org/ntsb/DEN89LA079.md): Aeronca 7AC · Wolf Point, MT · Accident · No injuries · Limited investigation · Final report · Feb 22, 1989 · N4627E · Substantial damage
  > The failure of the student pilot to use carburetor heat in a timely manner which resulted in a partial loss of engine power. Contributing to the accident was the inadequate weather evaluation the pilot made after taking off and flying through fog due to his…
- [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.

## 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 year(c."eventDate") = 1989
  AND 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?state=MT&year=1989

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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.