# NTSB investigations: Continental TSIO-520 series, 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 WPR27LA002](https://openairdocs.org/ntsb/WPR27LA002.md): Cessna P210N · Stevensville, MT · Accident · No injuries · Class 4 · Limited · Investigation open · Oct 4, 2026 · N94PS · Substantial damage
- [NTSB WPR17LA064](https://openairdocs.org/ntsb/WPR17LA064.md): Beech A36TC · Stevensville, MT · Accident · Minor injuries · Limited investigation · Final report · Feb 23, 2017 · N3803J · Substantial damage
  > The pilot's decision to conduct a takeoff with a tailwind on an upsloping runway in an overweight airplane, which resulted in the airplane having insufficient energy to climb out of ground effect.
- [NTSB WPR16LA171](https://openairdocs.org/ntsb/WPR16LA171.md): Cessna 310R · Schafer Meadows, MT · Accident · No injuries · Class 3 · Limited · Final report · Jun 26, 2016 · N455TB · Substantial damage
  > A loss of directional control while landing, which resulted in a runway excursion and landing gear collapse for reasons that could not be determined.
- [NTSB WPR15LA229](https://openairdocs.org/ntsb/WPR15LA229.md): Cessna TU206G · Saint Ignatius, MT · Accident · No injuries · Limited investigation · Final report · Aug 3, 2015 · N235HM · Substantial damage
  > Maintenance personnel’s failure to tighten a fuel line, which resulted in a loss of fuel pressure and a subsequent loss of engine power during cruise flight and an off-airport landing and collision with obstacles.
- [NTSB WPR15CA173](https://openairdocs.org/ntsb/WPR15CA173.md): Cessna T188C · Ismay, MT · Accident · No injuries · Data collection · Final report · May 31, 2015 · N9987J · Substantial damage
  > The pilot's incorrect action to continue the takeoff when he failed to maintain directional control during the takeoff roll.
- [NTSB WPR14CA067](https://openairdocs.org/ntsb/WPR14CA067.md): Beech 58P · Kalispell, MT · Accident · Serious injuries · Data collection · Final report · Dec 9, 2013 · N53MT · Substantial damage
  > The pilot's failure to maintain airplane control during the landing sequence.
- [NTSB WPR11FA170](https://openairdocs.org/ntsb/WPR11FA170.md): Cessna T310R · Butte, MT · Accident · 1 fatal · Field investigation · Final report · Mar 19, 2011 · N4914A · Substantial damage
  > The pilot's loss of airplane control during the missed approach for undetermined reasons. Contributing to the accident was the rapid and unforecast deterioration of the weather conditions to below the landing minimum and the pilot's decision to attempt the…
- [NTSB WPR10LA476](https://openairdocs.org/ntsb/WPR10LA476.md): Cessna 310R · Great Falls, MT · Accident · No injuries · Limited investigation · Final report · Sep 28, 2010 · N455TB · Substantial damage
  > The uncommanded retraction of the right main landing gear during taxi due to the failure of the landing gear extension system to move the right main gear upper side link into the locked position for undetermined reasons.
- [NTSB WPR09LA281](https://openairdocs.org/ntsb/WPR09LA281.md): Cessna T188C · Rock Springs, MT · Accident · No injuries · Limited investigation · Final report · May 31, 2009 · N9955J · Substantial damage
  > The pilot's decision to attempt to takeoff in crosswind conditions that exceeded the airplane’s demonstrated crosswind capability.
- [NTSB SEA07LA166](https://openairdocs.org/ntsb/SEA07LA166.md): Cessna T188C · Rock Springs, MT · Accident · No injuries · Limited investigation · Final report · Jun 10, 2007 · N2535J · Substantial damage
  > The failure of the left main landing gear due to fatigue.
- [NTSB SEA07LA002](https://openairdocs.org/ntsb/SEA07LA002.md): Cessna 340A · Kalispell, MT · Accident · No injuries · Limited investigation · Final report · Oct 2, 2006 · N1920E · Substantial damage
  > The fracture of the adjusting bellcrank in overstress due to binding in a linkage forward of the bell crank.
- [NTSB SEA05FA092](https://openairdocs.org/ntsb/SEA05FA092.md): Cessna T210N · Kalispell, MT · Accident · 2 fatal · Field investigation · Final report · May 3, 2005 · N106PM · Destroyed
  > Loss of aircraft control during climb while in instrument meteorological conditions. Icing conditions was a factor.
- [NTSB SEA05LA084](https://openairdocs.org/ntsb/SEA05LA084.md): Cessna T210N · Kalispell, MT · Accident · Minor injuries · Limited investigation · Final report · Apr 20, 2005 · N2AK · Destroyed
  > An airborne fire which was fueled by leaking hydraulic fluid (the ignition source for the fire was undetermined) from the landing gear hydraulic system located under the cockpit instrument panel due to inadequate maintenance from other maintenance personnel.…
- [NTSB SEA05LA011](https://openairdocs.org/ntsb/SEA05LA011.md): Cessna T210H · Missoula, MT · Accident · No injuries · Limited investigation · Final report · Oct 23, 2004 · N2240R · Substantial damage
  > The pilot's failure to follow published procedures/directives (inducing excessive fuel flow to the engine), and the subsequent loss of engine power for nonmechanical reasons while on final approach. Contributing factors were the utility pole and the ditch.
- [NTSB SEA04LA029](https://openairdocs.org/ntsb/SEA04LA029.md): Beech 58P · Missoula, MT · Accident · Minor injuries · Limited investigation · Final report · Dec 23, 2003 · N181AM · Destroyed
  > The second pilot's failure to maintain terrain clearance while maneuvering after takeoff. Proper climb rate not verified by the flight crew, fog, freezing fog, dark night conditions and inadequate supervision by the pilot-in-command were factors.
- [NTSB SEA02LA138](https://openairdocs.org/ntsb/SEA02LA138.md): Cessna T188C · Choteau, MT · Accident · No injuries · Limited investigation · Final report · Jul 29, 2002 · N2802J · Substantial damage
  > Fuel exhaustion as a result of the pilot's inattention to fuel consumption (flight duration) which resulted in a total loss of power and subsequent hard landing.
- [NTSB SEA01LA052](https://openairdocs.org/ntsb/SEA01LA052.md): Cessna 402B · Billings, MT · Accident · No injuries · Limited investigation · Final report · Feb 20, 2001 · N69316 · Substantial damage
  > Best rate-of-climb single-engine speed was not maintained. Delayed remedial action was a factor.
- [NTSB SEA96FA209](https://openairdocs.org/ntsb/SEA96FA209.md): Cessna 340A · Wise River, MT · Accident · 1 fatal · Field investigation · Final report · Sep 5, 1996 · N128RP · Destroyed
  > The pilot's attempt to fly in adverse meteorological conditions which led a loss of aircraft control. Factors contributing to the accident include: the pilot's failure to obtain the most current information of the meteorological conditions prior to departure,…
- [NTSB SEA94LA152](https://openairdocs.org/ntsb/SEA94LA152.md): Cessna T188C · Angela, MT · Accident · No injuries · Limited investigation · Final report · Jun 4, 1994 · N2535J · Substantial damage
  > Directional control was not maintained. Factors to the accident were: wet terrain and inadequate aircraft preflight.
- [NTSB SEA94LA074](https://openairdocs.org/ntsb/SEA94LA074.md): Beech 58P · Billings, MT · Accident · No injuries · Limited investigation · Final report · Mar 6, 1994 · N717HL · Substantial damage
  > The pilot's inadvertent retraction of the landing gear while on the runway.
- [NTSB SEA94LA058](https://openairdocs.org/ntsb/SEA94LA058.md): Cessna 402C · Billings, MT · Accident · No injuries · Limited investigation · Final report · Feb 7, 1994 · N2718Y · Substantial damage
  > The nose gear actuator froze. A factor to the accident was temperature extremes.
- [NTSB SEA93LA132](https://openairdocs.org/ntsb/SEA93LA132.md): Cessna T-188C · Augusta, MT · Accident · Minor injuries · Limited investigation · Final report · Jun 17, 1993 · N9952J · Substantial damage
  > The pilot's failure to maintain airspeed and terrain clearance while maneuvering on an aerial application flight. A factor relating to the accident was the pilot's diverted attention.
- [NTSB SEA92FA140](https://openairdocs.org/ntsb/SEA92FA140.md): Beech A36TC · Ballantine, MT · Accident · 1 fatal · Field investigation · Final report · Jun 29, 1992 · N3696R · Destroyed
  > The pilot-in-command's physical impairment and his continued VFR flight into instrument meteorological conditions. Factors relating to the accident were: the weather conditions and the hilly terrain.
- [NTSB SEA91LA214](https://openairdocs.org/ntsb/SEA91LA214.md): Beech 58TC · Kalispell, MT · Accident · No injuries · Limited investigation · Final report · Aug 17, 1991 · N350TH · Substantial damage
  > The pilot's failure to extend the landing gear. A factor contributing to the accident was the pilot's failure to identtify a down and locked landing gear condition prior to touchdown.
- [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 DEN86LA234](https://openairdocs.org/ntsb/DEN86LA234.md): Cessna T210M · Dillon, MT · Accident · Minor injuries · Limited investigation · Final report · Aug 22, 1986 · N6952M · Substantial damage
  > Plt said he called UNICOM for arpt advisory and heard operator say something about six. He thought she said rwy 6 was the preferred rwy (there is no rwy 6 at Dillon arpt). Operator actually said rwy 16 was the preferred rwy. Plt landed past midway point of…
- [NTSB FTW86MA010](https://openairdocs.org/ntsb/FTW86MA010.md): Beech V35 · Bridger, MT · Accident · 4 fatal · Major investigation · Final report · Oct 3, 1985 · N8475H · Destroyed
  > Drg a preflt wx briefing, the plt was advised that VFR flt was not recommended due to forecast frontal activity moving southbound along his route. Severe turbulence & icing had been reported just to the north of his course. He filed a VFR flt plan & took off…
- [NTSB DEN85LA060](https://openairdocs.org/ntsb/DEN85LA060.md): Beech B36TC · Billings, MT · Accident · Minor injuries · Limited investigation · Final report · Jan 5, 1985 · N6750C · Substantial damage
  > Plt used cannula connected to portable oxygen system during climb starting at 11,000 ft MSL. At FL 170 plt switched to a mask connected to acft oxygen ststem. At FL 250, plt complained of stomach pains for aprx 1/2 hr. Plt then stated to his son that his…
- [NTSB DEN83LA028](https://openairdocs.org/ntsb/DEN83LA028.md): Cessna T188C · Santa Rita, MT · Accident · No injuries · Limited investigation · Final report · Dec 1, 1982 · N2066J · Substantial damage
  > Aircraft nosed over during landing. Aircraft was swerving left after brake application. More braking was used and aircraft nosed over.
- [NTSB DEN82DA117](https://openairdocs.org/ntsb/DEN82DA117.md): Cessna 188 · 25nm Sw Santa R, MT · Accident · No injuries · Final report · Jun 25, 1982 · N2066J · Substantial damage
  > After dispensing his second load, the pilot returned to the airport where he circled to wait for traffic to clear the runway. About 1/2 way through the circle, the engine lost power and the pilot observed that the fuel gauges indicated empty. He landed on a…
- [NTSB DEN81FA068](https://openairdocs.org/ntsb/DEN81FA068.md): Cessna T210L · Big Timber, MT · Accident · 1 fatal · Closed · Sep 25, 1981 · N94136 · Destroyed
- [NTSB SEA79DTI25](https://openairdocs.org/ntsb/SEA79DTI25.md): Cessna 172 · Conrad, MT · Accident · No injuries · Closed · Sep 13, 1979 · N2015S · Substantial damage
- [NTSB SEA79FA021](https://openairdocs.org/ntsb/SEA79FA021.md): Cessna T210P · Lavina, MT · Accident · 1 fatal · Closed · Feb 28, 1979 · N6995N · Destroyed
- [NTSB SEA79FTI02](https://openairdocs.org/ntsb/SEA79FTI02.md): Cessna T210L · Great Falls, MT · Accident · Serious injuries · Closed · Oct 22, 1978 · N30751 · Substantial damage
- [NTSB SEA74FTI28](https://openairdocs.org/ntsb/SEA74FTI28.md): Cessna 210 · Deer Lodge, MT · Accident · No injuries · Closed · Jun 21, 1974 · N59027 · Substantial damage

## 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('17040'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=17040&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.