NTSB investigations: Continental IO-520 series, AK
766 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 | 1 |
|---|---|
| 1968 | 2 |
| 1969 | 4 |
| 1970 | 4 |
| 1971 | 6 |
| 1972 | 4 |
| 1973 | 10 |
| 1974 | 6 |
| 1975 | 14 |
| 1976 | 32 |
| 1977 | 21 |
| 1978 | 23 |
| 1979 | 17 |
| 1980 | 21 |
| 1981 | 22 |
| 1982 | 18 |
| 1983 | 17 |
| 1984 | 20 |
| 1985 | 14 |
| 1986 | 15 |
| 1987 | 11 |
| 1988 | 21 |
| 1989 | 17 |
| 1990 | 17 |
| 1991 | 17 |
| 1992 | 21 |
| 1993 | 19 |
| 1994 | 16 |
| 1995 | 18 |
| 1996 | 15 |
| 1997 | 25 |
| 1998 | 30 |
| 1999 | 15 |
| 2000 | 11 |
| 2001 | 13 |
| 2002 | 15 |
| 2003 | 13 |
| 2004 | 9 |
| 2005 | 17 |
| 2006 | 8 |
| 2007 | 12 |
| 2008 | 14 |
| 2009 | 7 |
| 2010 | 5 |
| 2011 | 13 |
| 2012 | 9 |
| 2013 | 16 |
| 2014 | 2 |
| 2015 | 8 |
| 2016 | 11 |
| 2017 | 8 |
| 2018 | 11 |
| 2019 | 3 |
| 2020 | 6 |
| 2021 | 8 |
| 2022 | 7 |
| 2023 | 6 |
| 2024 | 7 |
| 2025 | 5 |
| 2026 | 9 |
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\" = 'AK' 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" = 'AK' 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 ANC27LA001Accident · Minor injuriesClass 4 · LimitedInvestigation openCessna U206F · Meadow Lakes, AKNTSB WPR26LA361Accident · No injuriesClass 4 · LimitedInvestigation openCessna U206G · Stony River, AKNTSB ANC26FA105Accident · 2 fatalClass 3 · FieldInvestigation openCessna A185F · Stony River, AKNTSB ANC26LA081Accident · Minor injuriesClass 4 · LimitedInvestigation openCessna A185F · Hope, AKNTSB ANC26LA085Accident · No injuriesClass 4 · LimitedInvestigation openBeech 36 · Port Alsworth, AKNTSB ANC26LA050Accident · No injuriesClass 4 · LimitedInvestigation openCessna A185F · Steele Creek, AKNTSB ANC26LA032Accident · No injuriesClass 3 · LimitedPreliminary reportCessna A185F · Aniak, AKOn April 24, 2026, about 1045 Alaska daylight time, a wheel/ski-equipped Cessna 185 airplane, N92DC, was substantially damaged in an accident at Aniak Airport (ANI), Aniak, Alaska. The pilot and one passenger were not injured. The flight was being operated as…NTSB ANC26LA026Accident · Minor injuriesClass 4 · LimitedFinal reportCessna U206F · Juneau, AKA total loss of engine power for reasons that could not be determined because the airplane was not recovered from the ocean.NTSB ANC26LA022Accident · No injuriesClass 4 · LimitedFinal reportCessna A185F · Skwentna, AKThe pilot’s loss of directional control during landing roll due to contact with wind hardened snow berm and subsequent failure of main landing gear.NTSB ANC25LA096Accident · No injuriesClass 4 · LimitedFinal reportCessna A185F · Haines, AKThe pilot’s selection of an unsuitable landing area resulting in an on-ground collision with an obscured log and a main landing gear separation.NTSB ANC25LA078Accident · No injuriesClass 4 · LimitedFinal reportCessna U206C · Gulkana, AKThe pilot’s inadequate fuel management, which resulted in a total loss of engine power due to fuel starvation.NTSB ANC25LA069Accident · No injuriesClass 4 · LimitedFinal reportCessna P206C · Port Graham, AKThe pilot's improper landing flare and failure to maintain pitch control, which resulted in a tail strike. Contributing to the accident was the pilot’s failure to initiate a go around after the abnormal runway contact.NTSB ANC25LA057Accident · No injuriesClass 4 · LimitedFinal reportCessna A185F · Trapper Creek, AKThe pilot’s improper flare while landing on glassy water, which resulted in a hard landing.NTSB ANC25LA030Accident · No injuriesClass 3 · LimitedFinal reportCessna A185F · Skwentna, AKMaintenance personnel’s reuse of worn hardware during the installation of the landing gear assembly and the hardware’s failure and subsequent separation of the gear leg from the landing gear box assembly during taxi.NTSB ANC25LA003Accident · No injuriesClass 4 · LimitedFinal reportCessna A185F · Wasilla, AKThe pilot’s failure to maintain directional control during the landing roll, resulting in a ground loop.NTSB ANC25LA004Accident · No injuriesClass 4 · LimitedFinal reportCessna U206B · Skwentna, AKThe pilot’s delayed go-around decision, which resulted in inadvertent contact with the landing surface, loss of directional control, and a nose over in gusting wind conditions.NTSB ANC24FA102Accident · 1 fatalClass 3 · FieldFinal reportCessna 206 · Chalkyitsik, AKA loss of engine power due to water-contaminated fuel as a result of the pilot’s inadequate preflight inspection. Contributing to the accident was the operator’s failure to ensure replacement filters were available for use during refueling operations.NTSB ANC24LA075Accident · No injuriesClass 4 · LimitedFinal reportCessna A185F · Fairbanks, AKThe pilot's failure to maintain directional control while landing at a short remote airstrip.NTSB ANC24LA059Accident · No injuriesClass 4 · LimitedFinal reportCessna 185 · Anchorage, AKThe pilot’s failure to maintain directional control during landing in gusting crosswind conditions.NTSB ANC24LA046Accident · No injuriesClass 4 · LimitedFinal reportCessna 206 · Fairbanks, AKThe pilot’s failure to maintain directional control during takeoff in gusting wind conditions.NTSB ANC24LA045Accident · No injuriesClass 3 · LimitedFinal reportCessna 206 · King Salmon, AKA partial loss of engine power due to detonation/preignition of the No. 1 cylinder for reasons that could not be determined.NTSB ANC23LA080Accident · No injuriesClass 3 · LimitedFinal reportCessna A185F · Homer, AKA total loss of engine power for undetermined reasons.NTSB ANC23LA073Accident · No injuriesClass 4 · LimitedFinal reportCessna A185F · Beluga, AKThe pilot’s delayed go-around decision with insufficient runway remaining.NTSB ANC23LA063Accident · No injuriesClass 4 · LimitedFinal reportCessna U206G · Skwentna, AKThe airplane’s float contacted an undetected submerged gravel bar during landing which resulted in a nose over.NTSB ANC23LA059Accident · No injuriesClass 4 · LimitedFinal reportCessna 185 · Iliamna, AKThe passenger’s inadvertent application of brakes during landing that resulted in a nose over.NTSB ANC23LA026Accident · No injuriesClass 4 · LimitedFinal reportCessna A185F · Homer, AKThe pilot’s failure to maintain directional control of the airplane during the landing roll, which resulted in a ground loop and impact with terrain.NTSB ANC23LA022Accident · No injuriesClass 4 · LimitedFinal reportCessna U206F · Chugiak, AKThe pilot’s failure to maintain directional control during takeoff in flat light conditions which resulted in a loss of control and impact with a snow berm.NTSB ANC23LA006Accident · No injuriesClass 3 · LimitedFinal reportCessna 207 · Bethel, AKThe total loss of engine power during cruise flight due to fuel starvation and the pilot’s mismanagement of the available fuel.NTSB ANC23FA001Accident · 1 fatalClass 3 · FieldFinal reportCessna A185F · Fairbanks, AKThe improperly maintained floats, which allowed water to fill the front compartments and resulted in the airplane nosing over during taxi. Contributing to the fatal injury of the pilot was the improperly secured cargo, which prevented the pilot from egressing…NTSB ERA22LA410Accident · No injuriesClass 3 · LimitedFinal reportCessna U206 · Buckland, AKThe installation of incompatible rocker arms and rocker arm bushings during an engine overhaul, which resulted in a complete loss of engine power.NTSB ANC22LA040Accident · No injuriesClass 3 · LimitedFinal reportCessna U206F · Kodiak, AKThe failure of the right main landing gear leg due to fatigue cracks that initiated from corrosion pitting.NTSB ANC22LA037Accident · No injuriesClass 4 · LimitedFinal reportCessna A185E · Willow, AKThe pilot’s selection of unsuitable terrain for landing which resulted in a nose over.NTSB WPR22LA124Accident · No injuriesClass 3 · LimitedFinal reportCessna 310R · McGrath, AKA failure of the right main landing gear bellcrank lower arm fork, bellcrank, pivot bolt, and trunnion bellcrank lug for undetermined reasons.NTSB ANC22LA022Accident · Serious injuriesClass 4 · LimitedFinal reportCessna U206F · Newhalen, AKThe pilot’s decision to continue visual flight into an area of instrument meteorological conditions, which resulted in the pilot experiencing a loss of visual reference and subsequent controlled flight into terrain.NTSB ANC21LA066Accident · Minor injuriesClass 4 · LimitedFinal reportCessna U206F · Igiugig, AKThe pilot’s improper decision to continue a takeoff attempt when it became evident that the airplane would not become airborne before reaching the departure end shoreline.NTSB ANC21LA051Accident · No injuriesClass 4 · LimitedFinal reportCessna A185F · Hoonah, AKThe pilot’s failure to maintain directional control during landing.NTSB ANC21LA050Accident · No injuriesClass 4 · LimitedFinal reportCessna A185F · Dillingham, AKThe pilot’s failure to maintain directional control during takeoff in gusting wind conditions which resulted in a loss of control and impact with terrain.NTSB ANC21LA031Accident · No injuriesClass 4 · LimitedFinal reportCessna A185F · Anchorage, AKA loss of control during landing for reasons that could not be determined based on the available evidence.NTSB ANC21LA027Accident · No injuriesClass 4 · LimitedFinal reportBeech A36 · Port Alsworth, AKThe pilot's misidentification of the airport’s active runway, which resulted in an off runway landing and a collision with a snow berm. Contributing to the accident was the runway’s lack of identifying markings.NTSB ANC21LA026Accident · Minor injuriesClass 4 · LimitedFinal reportCessna A185F · Fairbanks, AKThe pilot's failure to maintain directional control during the landing roll, which resulted in a ground loop.NTSB ANC21LA022Accident · No injuriesClass 3 · LimitedFinal reportCessna A185F · Skwentna, AKInstallation of improper hardware on the ski check cable. Contributing to the accident was the inadequate inspection of the ski yokes, which resulted in the subsequent failure of the right main landing gear ski yoke and collapse of the right main landing gear…NTSB ANC21FA015Accident · 2 fatalClass 3 · FieldFinal reportCessna 185 · Chitina, AKAn in-flight breakup during cruise flight for reasons that could not be determined based on available evidence.NTSB ANC20CA091Accident · No injuriesClass 4 · Data collectionFinal reportCessna A185 · Lime Village, AKThe pilot’s loss of control during the landing flare, which resulted in an impact with trees.NTSB ANC20LA085Accident · 2 fatalClass 3 · LimitedFinal reportCessna A185 · Fairbanks, AKThe PA-18 pilot’s failure to see and avoid the Cessna 185 as it was landing. Contributing to the accident was the PA-18 pilot’s failure to hear the traffic advisory provided by the air traffic control tower.NTSB ANC20CA071Accident · No injuriesClass 4 · Data collectionFinal reportCessna A185 · Palmer, AKThe pilot's loss of control during landing, which resulted in a ground loop and left main landing gear collapse.NTSB WPR20CA232Accident · No injuriesClass 4 · Data collectionFinal reportCessna U206 · Nenana, AKThe pilot's failure to maintain directional control during a soft field takeoff on a dirt airstrip, which resulted in an impact with a vehicle.NTSB ANC20CA061Accident · No injuriesClass 4 · Data collectionFinal reportBeech A36 · Chignik Lagoon, AKThe pilot's improper approach, which resulted in a long landing and a runway overrun.NTSB ANC20LA046Accident · 1 fatalClass 3 · LimitedFinal reportCessna A185 · Nuiqsut, AKThe pilot’s controlled flight into flat snow-covered terrain in weather conditions that were conducive to flat light conditions.NTSB ANC19LA049Accident · No injuriesClass 3 · LimitedFinal reportCessna A185 · Talkeetna, AKA fracture of the right outboard landing gear bracket for undetermined reasons.NTSB WPR19FA152Accident · 1 fatalClass 3 · FieldFinal reportCessna A185 · Whittier, AKThe pilot’s failure to configure the landing gear for a water landing, which resulted in a nose-over. Contributing to the accident was the pilot's distraction due to his talking passengers.