NTSB investigations: Continental IO-520 series, MT
68 cases on aircraft whose registry engine model is Continental IO-520 series. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.
Cases per year
| 1967 | 2 |
|---|---|
| 1968 | 1 |
| 1969 | 1 |
| 1971 | 2 |
| 1974 | 2 |
| 1975 | 3 |
| 1976 | 3 |
| 1977 | 1 |
| 1978 | 3 |
| 1979 | 1 |
| 1980 | 2 |
| 1981 | 2 |
| 1982 | 2 |
| 1984 | 3 |
| 1985 | 3 |
| 1987 | 1 |
| 1988 | 2 |
| 1989 | 1 |
| 1990 | 1 |
| 1991 | 1 |
| 1992 | 3 |
| 1993 | 2 |
| 1994 | 1 |
| 1995 | 3 |
| 1997 | 1 |
| 1999 | 1 |
| 2001 | 1 |
| 2004 | 4 |
| 2005 | 2 |
| 2006 | 2 |
| 2007 | 1 |
| 2009 | 1 |
| 2015 | 1 |
| 2017 | 1 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2026 | 1 |
Where
Open the mapLatest cases
Query with SQL
duckdb -csv -c "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 ('17032'))
ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
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 ('17032'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB WPR26LA360Accident · No injuriesClass 4 · LimitedInvestigation openCessna A185F · Livingston, MTNTSB WPR25LA047Accident · No injuriesClass 4 · LimitedFinal reportCessna A185F · Lewistown, MTThe pilot’s inadvertent impact with a rock during a landing on a grass strip.NTSB WPR23LA331Accident · No injuriesClass 4 · LimitedFinal reportBeech N35 · Ennis, MTThe pilot's failure to extend the landing gear before landing.NTSB WPR21FA353Accident · 2 fatalClass 3 · FieldFinal reportBeech S35 · Billings, MTThe pilot’s improper flare, which led to a hard landing, subsequent loss of control, and collision with trees.NTSB WPR20CA250Accident · No injuriesClass 4 · Data collectionFinal reportCessna A185 · Kalispell, MTThe pilot's excessive speed while landing on a wet grass runway, which resulted in a runway excursion and impact with a fence.NTSB WPR20CA183Accident · No injuriesClass 4 · Data collectionFinal reportCessna 310 · Butte, MTThe pilot's failure to maintain clearance from a fence post during final approach which resulted in a damage to the left main landing gear, and its subsequent collapse during landing.NTSB WPR19LA134Accident · No injuriesClass 3 · LimitedFinal reportCessna A185 · Kalispell, MTThe loss of directional control during landing for reasons that could not be determined based on available evidence.NTSB GAA17CA212Accident · No injuriesData collectionFinal reportThomas Craig E Wittman W-10 · Stevensville, MTThe pilot’s decision to take off with a known master brake cylinder leak and his subsequent failure to maintain directional control during landing.NTSB WPR15LA198Accident · Serious injuriesLimited investigationFinal reportCessna TU206F · Schafers Meadows, MTThe pilot's failure to maintain directional control of the airplane during the landing roll in variable and gusting wind conditions.NTSB WPR10CA024Accident · No injuriesData collectionFinal reportCessna A185F · Sand Coulee, MTThe pilot's failure to maintain directional control during landing with a crosswind.NTSB SEA07LA210Accident · No injuriesLimited investigationFinal reportBeech E-33C · Laurel, MTThe overload failure of the nose gear retract brace (drag link) during the landing roll.NTSB SEA06LA114Accident · No injuriesLimited investigationFinal reportBeech A36 · Ennis, MTThe loss of engine power during takeoff due to an excessively lean fuel-to-air mixture ratio as a result of excessive mating surface wear between the mixture control arm and metering shaft. A factor was the improper installation of the new engine, which…NTSB SEA06CA087Accident · No injuriesData collectionFinal reportCessna 310R · Billings, MTCollapse of the right main landing gear during the landing roll for an undetermined reason.NTSB SEA05FA124Accident · Serious injuriesField investigationFinal reportCessna 320E · Missoula, MTTerrain clearance was not possible as a result of a right engine failure. Factors contributing to the accident included the rising terrain, foreign material being ingested into the engine's turbocharger, which obstructed the turbocharger's impeller, the…NTSB SEA05LA121Accident · Minor injuriesLimited investigationFinal reportCessna 188A · Fairview, MTWhile in cruise flight a separation of a propeller blade as a result of a propeller hub crack. Factors contributing to the accident included the installation of an unapproved propeller, and the failure to properly service the propeller with red dyed oil for…NTSB SEA04GA192Accident · 3 fatalFinal reportCessna U206G · Essex, MTThe pilot's misidentification of the airplane's location, which resulted in his improper decision to fly into the wrong drainage, and his failure to maintain terrain clearance while executing a turn to reverse course after he realized his navigational error.…NTSB SEA04CA138Accident · No injuriesData collectionFinal reportCessna A185F · Cut Bank, MTThe pilot's failure to maintain directional control during the takeoff roll.NTSB SEA04LA117Accident · No injuriesLimited investigationFinal reportCessna 185F · Bozeman, MTThe failure of the right main gear brake disk attach flange during the landing roll, due to fatigue cracks emanating from numerous corrosion pits present on the surface of the disk, leading to the right brake becoming totally inoperative, and resulting in a…NTSB SEA04LA087Accident · No injuriesLimited investigationFinal reportCessna 185A · Polson, MTThe pilot's inadequate compensation for the changing wind conditions at the time of the landing. Factors include gusty, variable, crosswinds, and a runway marker near the edge of the runway the pilot was landing on.NTSB SEA02LA019Accident · No injuriesLimited investigationFinal reportCessna 310 · Sidney, MTThe pilot's improper abort procedure and inadequate remedial action, leading to a loss of directional control after losing power in one engine during the takeoff roll. Factors include the loss of power from one engine, and a fence around the perimeter of the…NTSB SEA99LA139Accident · No injuriesLimited investigationFinal reportCessna 188B · Sidney, MTThe pilot's failure to adequately compensate for wind conditions.NTSB SEA97LA087Accident · No injuriesLimited investigationFinal reportCessna A185E · Billings, MTThe flight instructor's inadequate compensation for the wind conditions. The crosswind conditions were a factor.NTSB SEA96LA011Accident · No injuriesLimited investigationFinal reportCessna 210L · Lincoln, MTThe failure of the pilot to follow the landing checklist and assure that the landing gear was extended. Factors relating to the accident were: the pilot's diverted attention, and an inoperative landing gear warning system.NTSB SEA95LA134Accident · No injuriesLimited investigationFinal reportCessna 210B · Lewiston, MTLoss of engine power due to undetermined reasons, and the lack of a suitable area for the forced landing.NTSB SEA95LA050Accident · No injuriesLimited investigationFinal reportBeech S-35 · Wolf Point, MTThe loss of power due to lost oil pressure and a failed connecting rod. Factors include fence posts and dusk lighting conditions which limited visibility.NTSB SEA94LA234Accident · No injuriesLimited investigationFinal reportCessna A185F · Conrad, MTThe 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 SEA93LA188Accident · Serious injuriesLimited investigationFinal reportCessna A188B · Three Forks, MTThe pilot's failure to maintain flying speed resulting in a stall/mush. The high density altitude and the pilot's failure to completely jettison his load were factors.NTSB SEA93LA096Accident · Minor injuriesLimited investigationFinal reportCessna T-210N · Laurel, MTThe loss of engine power from fuel exhaustion due to the pilot's failure to ensure an adequate supply of fuel for the flt.NTSB SEA92LA179Accident · No injuriesLimited investigationFinal reportCessna A185F · Ennis, MTDirectional control was not maintained. Factors to the accident were: a loose gravel airstrip, wind gusts and inadequate remedial action.NTSB SEA92LA134Accident · Minor injuriesLimited investigationFinal reportCessna A185F · Ronan, MTThe pilot's operation with known deficiencies in equipment and erratic operation of the fuel control system. A factor contributing to the accident was: soft terrain.NTSB SEA92LA071Accident · No injuriesLimited investigationFinal reportCessna A185F · Billings, MTA worn tailwheel steering system and inadequate inspection of the airplane. A factor relating to the accident was the crosswind condition.NTSB SEA91LA206Accident · No injuriesLimited investigationFinal reportBeech V35B · Belgrade, MTThe pilot's failure to maintain a positive rate of climb during the takeoff. Factors contributing to the accident were the open cabin window and the pilot's diverting his attention.NTSB SEA90LA181Accident · No injuriesLimited investigationFinal reportCessna U206 · Lewistown, MTThe pilot did not maintain an adequate lookout while maneuvering which resulted in a collision with a transmission wire.NTSB DEN90LA018Accident · No injuriesLimited investigationFinal reportCessna U206B · Billings, MTImproper planning/decision by the pilot while taxiing during unfavorable wind conditions.NTSB DEN88LA188Accident · No injuriesLimited investigationFinal reportCessna T210F · Ennis, MTWhile on a landing rollout, the left main gear strut failed & separated from the acft. The plt said he held the acft straight for about 600 ft, then it veered to the left & went off the rwy. Subsequently, the left wing & left horizontal stabilizer were…NTSB DEN88LA124Accident · No injuriesLimited investigationFinal reportCessna A-185F · Phillipsburg, MTNTSB DEN87LA119Accident · No injuriesLimited investigationFinal reportCessna A188B · St. Ignatius, MTAn ag plt was spraying a field near the local arpt, at 100 feet AGL. During an aerial application maneuver, the engine made a loud bang and stopped. The plt leveled the acft, selected a landing site and landed. During the roll out, the acft crossed an…NTSB DEN86LA050Accident · Serious injuriesLimited investigationFinal reportBeech V-35B · Wibaux, MTThe plt stated that light snow was falling at the arpt at the time of departure. The pax stated after the accident that the plt encountered clouds at their cruise alt of about 6000 ft. he continued to state that the acft made a shallow descent at first…NTSB DEN86LA046Accident · No injuriesLimited investigationFinal reportCessna 206 · Hardin, MTAfter ldg to the east on a snow covered dirt rwy, the pilot elected to t/o on an intersecting rwy to the south. He could not see the entire rwy surface from the position due to dwn slope from center of rwy. The acft impacted snowdrifts 40-50 mph on t/o gnd…NTSB DEN85LA149Accident · No injuriesLimited investigationFinal reportBeech V35B · Kalispell, MTN904V, a privately owned B-35, skidded off to the side of a runway during landing. The plt said that he inadvertently activated the gear up switch instead of the flap switch. The right landing gear collapsed causing the plt to lose control of acft.NTSB DEN84LA229Accident · No injuriesLimited investigationFinal reportCessna T-206 · Kalispell, MTThe pilot reported complete power loss while turning final. Attempts to restore pwr were unsuccessful and the aircraft was landed hard in the grass short of rwy. Investigation failed to reveal evidence of engine malfunction or failure.NTSB DEN84LA164Accident · No injuriesLimited investigationFinal reportCessna 210E · Livingston, MTWhile on a visual flight plan flight the non-instrument rated plt operated his unpressurized Cessna 210 above the clouds and up to an altitude of 16500 feet MSL. The plt stated that just after passing, 'crazy peak', he encountered extreme turbulence and the…NTSB DEN84LA118Accident · No injuriesLimited investigationFinal reportCessna A188B · Hardin, MTThe plt returned to the arpt with about a 100 gal load of spray solution on board when the flagger would not work. During the landing, the acft swerved to the left & the right gear collapsed. No mechanical malfunction or failure of the gear or brakes was…NTSB DEN82FTI17Accident · No injuriesFinal reportBellanca 17-30A · Browning, MTAcft landed with the gear up.NTSB DEN82AA115Accident · 6 fatalFinal reportBeech V35B · Near Ringling, MTAlthough IMC existed over mountainous areas, the plt attempted a visual flt direct to salt lake city. The probable flt path of the acft was one which is usually flown by plts on VFR flts. The course taken by plts desiring to cross over themountain ridges west…NTSB DEN82FTI07Accident · No injuriesClosedBeech 35-C33 · Dillion, MTNTSB DEN81FTA05Accident · No injuriesClosedCessna 210 · Billings, MTNTSB DEN81FTA02Accident · No injuriesClosedBeech V35B · Billings, MTNTSB DEN80FTI07Accident · No injuriesClosedCessna 188B · Havre, MTNTSB SEA79DTI10Accident · No injuriesClosedCessna 188 · Carter, MT