NTSB investigations: Lycoming 0-320 series, MT
230 cases on aircraft whose registry engine model is Lycoming 0-320 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
| 1964 | 5 |
|---|---|
| 1965 | 4 |
| 1966 | 11 |
| 1967 | 8 |
| 1968 | 4 |
| 1969 | 3 |
| 1970 | 7 |
| 1971 | 4 |
| 1972 | 3 |
| 1973 | 6 |
| 1974 | 5 |
| 1975 | 8 |
| 1976 | 5 |
| 1977 | 8 |
| 1978 | 8 |
| 1979 | 4 |
| 1980 | 6 |
| 1981 | 9 |
| 1982 | 8 |
| 1983 | 6 |
| 1984 | 2 |
| 1985 | 3 |
| 1986 | 4 |
| 1987 | 2 |
| 1988 | 2 |
| 1989 | 6 |
| 1990 | 6 |
| 1991 | 3 |
| 1992 | 2 |
| 1993 | 2 |
| 1994 | 3 |
| 1995 | 2 |
| 1996 | 1 |
| 1997 | 2 |
| 1998 | 2 |
| 1999 | 2 |
| 2000 | 5 |
| 2001 | 3 |
| 2002 | 3 |
| 2003 | 6 |
| 2004 | 3 |
| 2005 | 2 |
| 2006 | 4 |
| 2007 | 3 |
| 2008 | 1 |
| 2010 | 4 |
| 2011 | 1 |
| 2012 | 2 |
| 2013 | 2 |
| 2014 | 3 |
| 2015 | 3 |
| 2016 | 3 |
| 2020 | 5 |
| 2021 | 2 |
| 2022 | 2 |
| 2024 | 1 |
| 2025 | 5 |
| 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 ('41508'))
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 ('41508'))
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 WPR26LA348Accident · No injuriesClass 4 · LimitedInvestigation openPiper PA-18-150 · Roundup, MTNTSB WPR25LA243Accident · No injuriesClass 4 · LimitedFinal reportCessna 172N · Ronan, MTThe student pilot's inadequate landing flare and recovery from a bounced landing.NTSB WPR25FA223Accident · 2 fatalClass 3 · FieldPreliminary reportGrumman American Avn. AA-5 · West Glacier, MTOn July 26, 2025, about 0942 mountain daylight time, a Grumman AA-5, N1342R, was destroyed when it was involved in an accident near West Glacier, Montana. The pilot and passenger were fatally injured. The airplane was operated as a Title 14 Code of Federal…NTSB WPR25LA194Accident · No injuriesClass 4 · LimitedFinal reportBellanca 7GCBC · Helena, MTThe pilot’s failure to maintain directional control of the airplane during landing.NTSB WPR25FA182Accident · 1 fatalClass 3 · FieldPreliminary reportCessna 172 · Billings, MTOn June 19, 2025, at 1412 mountain daylight time, a Cessna 172K airplane, N79306, was destroyed when it was involved in an accident near Billings, Montana. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations…NTSB WPR25LA074Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-18-150 · Red Rock, MTThe pilot's failure to maintain directional control during takeoff, which resulted in an impact with deep snow and vegetation.NTSB WPR24LA271Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-18-150 · Manhattan, MTA total loss of engine power due to carburetor icing.NTSB WPR22LA356Accident · No injuriesClass 4 · LimitedFinal reportCessna 172M · Superior, MTThe pilot’s excessive airspeed during a landing, which resulted in a runway overrun and collision with terrain.NTSB WPR22LA301Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA-28-140 · Laurel, MTThe loss of climb performance due to undetermined reasons.NTSB WPR21LA163Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-18-150 · Wilsall, MTThe pilot's failure to maintain directional control during the landing roll with a crosswind.NTSB WPR21LA137Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-18-150 · Three Forks, MTThe pilot’s improper landing flare, which resulted in a loss of directional control, runway excursion and impact with terrain.NTSB WPR21LA067Accident · Serious injuriesClass 4 · LimitedFinal reportCessna 172 · Dillon, MTThe student pilot’s exceedance of the airplane’s critical angle attack during an attempted go-around, which resulted in an aerodynamic stall.NTSB WPR21LA032Accident · 1 fatalClass 3 · LimitedFinal reportCessna 172 · Billings, MTThe pilot’s failure to maintain the proper descent glide path while on final approach for reasons that could not be determined from available evidence.NTSB WPR20LA278Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA28 · Harlowton, MTThe pilot’s failure to follow the appropriate takeoff procedures, which resulted in a collision with terrain.NTSB WPR20CA214Accident · No injuriesClass 4 · Data collectionFinal reportPiper PA 18A-135 · Marion, MTThe pilot's failure to maintain directional control of the airplane while landing in gusting wind conditions, which resulted in a runway excursion and collision with a fence.NTSB WPR20CA066Accident · No injuriesData collectionFinal reportPiper PA 23 · Helena, MTThe pilot's improper decision to attempt an off-airport departure from rough terrain without inspecting the takeoff area, which resulted in a collision with a shallow rut during takeoff and the nose landing gear collapsing.NTSB GAA16CA419Accident · No injuriesData collectionFinal reportCessna 172 · Lewiston, MTThe pilot's failure to ensure that his seat was adjusted and locked, which resulted in his seat sliding aft during the takeoff roll, and the subsequent loss of directional control and runway excursion.NTSB GAA16CA284Accident · No injuriesData collectionFinal reportBellanca 7GCBC · Ferndale, MTThe pilot's loss of directional control during takeoff resulting in a decision to rotate early, and a collision with a hangar and subsequent fire.NTSB GAA16CA265Accident · Minor injuriesData collectionFinal reportPiper PA 18-150 · Laurel, MTThe pilot's loss of directional control during the landing touchdown, resulting in a runway excursion and substantial damage to the both wings.NTSB WPR15FA247Accident · 2 fatalField investigationFinal reportCessna 172P · Townsend, MTThe non-instrument-rated pilot's decision to conduct a cross-country flight over a mountain range in dark night conditions with limited night flight experience, which resulted in a collision with mountainous terrain.NTSB GAA15CA235Accident · No injuriesData collectionFinal reportCessna 172N · Kalispell, MTThe pilot's loss of directional control, which resulted in a runway excursion, and collision with runway and taxiway lights and terrain.NTSB WPR15LA087Accident · Minor injuriesLimited investigationFinal reportPiper PA 28-140 · Helena, MTLoss of engine power after takeoff for reasons that could not be determined because postaccident examination did not reveal any evidence of an anomaly that would have precluded normal operation.NTSB WPR15FA062Accident · 1 fatalField investigationFinal reportPiper PA 18-150 · Ronan, MTThe pilot’s failure to maintain clearance from terrain while performing an intentional, abrupt low-level maneuver.NTSB WPR14CA384Accident · Minor injuriesData collectionFinal reportBellanca 7GCBC · Meadow Creek, MTThe pilot's inadequate landing flare and failure to maintain aircraft control during landing.NTSB WPR14CA246Accident · No injuriesData collectionFinal reportPiper PA 22-160 · Jackson, MTThe pilot's failure to maintain directional control of the airplane during landing roll.NTSB WPR14LA023Accident · Minor injuriesLimited investigationFinal reportCessna 172 - M · Hardin, MTA rough-running engine and partial loss of power, which resulted from the pilot’s failure to use carburetor heat appropriately while operating in an area conducive to carburetor icing.NTSB WPR13CA362Accident · No injuriesData collectionFinal reportBellanca 7GCBC · West Yellowstone, MTThe pilot's failure to maintain directional control during the takeoff roll, which resulted in a runway excursion and a collision with an approach slope indicator system component.NTSB WPR12CA209Accident · Minor injuriesData collectionFinal reportPiper PA-28-140 · Sula, MTThe pilot's inability to maintain clearance from terrain while operating in a downdraft over mountainous terrain.NTSB WPR12FA123Accident · 1 fatalField investigationFinal reportBellanca 7GCBC · Brockton, MTThe pilot’s failure to maintain adequate airspeed and airplane control while maneuvering at a low altitude, which resulted in a stall and subsequent impact with terrain.NTSB WPR11FA390Accident · 2 fatalField investigationFinal reportPiper PA-18-150 · Forsyth, MTThe pilot’s failure to maintain adequate airspeed while maneuvering, which resulted in a stall/mush, loss of control, and impact with terrain.NTSB WPR10CA469Accident · No injuriesData collectionFinal reportPiper PA-18-150 · White Sulphur Springs, MTThe pilot's failure to maintain control of the airplane during a go-around in turbulent wind conditions, which resulted in a collision with trees.NTSB WPR10LA393Accident · Minor injuriesLimited investigationFinal reportPiper PA18A · Billings, MTThe pilot's inadequate compensation for the wind conditions and failure to maintain lateral and directional control of the airplane during landing.NTSB WPR10TA335Accident · No injuriesFinal reportPiper PA-18-150 · Dillon, MTThe pilot's failure to maintain directional control during landing.NTSB WPR10LA180Accident · No injuriesLimited investigationFinal reportPiper PA-22-150 · Terry, MTThe pilot's failure to maintain directional control during the landing roll in gusting winds. Contributing to the accident was a loss of engine power on final approach due to fuel exhaustion as a result of the pilot having to divert due to deteriorating…NTSB SEA08CA169Accident · No injuriesData collectionFinal reportBellanca 7GCBC · Helena, MTThe failure of the pilot receiving instruction to adequately compensate for the crosswind condition and failure to maintain directional control. Also causal was the flight instructor's delayed remedial action and inadequate supervision of the flight.NTSB LAX07CA288Accident · No injuriesData collectionFinal reportBellanca 7GCBC · Laurel, MTCorrosion and fatigue-induced failure of the landing gear structure.NTSB LAX07CA279Accident · No injuriesData collectionFinal reportCessna 172L · Helena, MTunexpected collision with birds on short final that damaged the airplane wing structure.NTSB SEA07CA194Accident · No injuriesData collectionFinal reportPiper PA-18-150 · Jordan, MTThe pilot's failure to maintain aircraft control during a go-around. Contributing factors were the pilot's selection of unsuitable terrain for landing and the rough/uneven terrain.NTSB SEA06LA109Accident · Serious injuriesLimited investigationFinal reportPiper PA-28-160 · Laurel, MTThe failure of maintenance personnel to properly reinstall the left-hand control yoke to the left-hand control column, and the failure of other maintenance personnel to properly verify the installation, which resulted in the pilot's loss of control in flight…NTSB SEA06CA103Accident · No injuriesData collectionFinal reportCessna 172M · Hamilton, MTThe pilot's inadequate compensation for the wind conditions during the landing roll which resulted in his failure to maintain directional control. Factors included variable winds and gusty crosswinds.NTSB SEA06CA095Accident · No injuriesData collectionFinal reportHelmer Avid Magnum · Big Timber, MTThe pilot's failure to maintain directional control after he diverted his attention to close the aircraft's door during the takeoff roll. Factors include a fence and fence post along the side of the runway.NTSB SEA06CA098Accident · No injuriesData collectionFinal reportCessna 172N · Billings, MTThe pilot's failure to maintain clearance from a sign while taxiing to parking.NTSB SEA05LA100Accident · No injuriesLimited investigationFinal reportCessna 152TW · Missoula, MTThe pilot's failure to maintain clearance from a taxiway identification sign as he attempted to turn off the runway onto the taxiway during the last part of the landing roll. Factors include a taxiway identification sign in the vicinity of the intersection of…NTSB SEA05LA048Accident · No injuriesLimited investigationFinal reportPiper PA-28-140 · Superior, MTA loss of engine power due to the pilot's inadequate planning/decision and improper fuel management, which resulted in fuel starvation. A contributing factor was the berm.NTSB SEA04CA151Accident · No injuriesData collectionFinal reportPiper PA22-20 · Wht Sulphur Spg, MTThe failure of the private pilot receiving flight training for a tail wheel endorsement to maintain aircraft control, and his excessive braking during the landing roll, subsequently nosing over the airplane. A contributing factor was the flight instructor's…NTSB SEA04LA101Accident · Minor injuriesLimited investigationFinal reportPiper PA-18A · Trego, MTFailure to maintain clearance from trees during the initial climb.NTSB SEA04LA098Accident · Minor injuriesLimited investigationFinal reportPiper PA-18-150 · Columbus, MTThe pilot's failure to maintain directional control of the aircraft during the landing and subsequent go-around. Inadequate compensation for the gusting winds and an airport hangar were factors.NTSB SEA03LA188Accident · No injuriesLimited investigationFinal reportPiper PA-22-160 · Billings, MTThe pilot's inadequate compensation for wind conditions which led to a loss of control and subsequent ground loop. A contributing factor was the wind gust.NTSB SEA03LA140Accident · Serious injuriesLimited investigationFinal reportPiper PA-18A · Zurich, MTThe pilot's failure to maintain airspeed which resulted in an inadvertent stall.NTSB SEA03CA102Accident · No injuriesData collectionFinal reportPiper PA-18 · Silver City, MTProper descent rate not maintained while on final approach. A wind gust is a factor in the accident.