NTSB investigations: Continental IO-520 series, 1991
64 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
| 1964 | 7 |
|---|---|
| 1965 | 38 |
| 1966 | 65 |
| 1967 | 101 |
| 1968 | 81 |
| 1969 | 68 |
| 1970 | 75 |
| 1971 | 74 |
| 1972 | 87 |
| 1973 | 88 |
| 1974 | 117 |
| 1975 | 120 |
| 1976 | 140 |
| 1977 | 149 |
| 1978 | 168 |
| 1979 | 149 |
| 1980 | 162 |
| 1981 | 140 |
| 1982 | 118 |
| 1983 | 106 |
| 1984 | 101 |
| 1985 | 77 |
| 1986 | 72 |
| 1987 | 73 |
| 1988 | 80 |
| 1989 | 71 |
| 1990 | 59 |
| 1991 | 64 |
| 1992 | 86 |
| 1993 | 70 |
| 1994 | 56 |
| 1995 | 81 |
| 1996 | 73 |
| 1997 | 75 |
| 1998 | 74 |
| 1999 | 69 |
| 2000 | 63 |
| 2001 | 76 |
| 2002 | 77 |
| 2003 | 73 |
| 2004 | 70 |
| 2005 | 95 |
| 2006 | 62 |
| 2007 | 70 |
| 2008 | 61 |
| 2009 | 55 |
| 2010 | 50 |
| 2011 | 72 |
| 2012 | 56 |
| 2013 | 59 |
| 2014 | 45 |
| 2015 | 50 |
| 2016 | 47 |
| 2017 | 56 |
| 2018 | 59 |
| 2019 | 46 |
| 2020 | 39 |
| 2021 | 41 |
| 2022 | 34 |
| 2023 | 41 |
| 2024 | 45 |
| 2025 | 34 |
| 2026 | 40 |
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 year(c.\"eventDate\") = 1991
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 year(c."eventDate") = 1991
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 FTW92LA050Accident · No injuriesLimited investigationFinal reportBeech 95-C55 · Tyler, TXThe pilot's failure to feather the propeller and maintain directional control. Factors were the lose of power on one engine for undetermined reasons and the soft terrain.NTSB SEA92LA032Accident · No injuriesLimited investigationFinal reportCessna 185 · Stanley, IDThe pilot-in-command's selection of unsuitable terrain (snow covered runway) for landing resulting in a nose over on landing rollout.NTSB ANC92FA022Accident · 1 fatalField investigationFinal reportCessna 207 · Mcgrath, AKThe pilot in command's improper inflight planning/decision and his attempt to fly VFR through IMC conditions. Factors contributing to the accident were the snow, whiteout conditions, and darkness.NTSB ANC92LA019Accident · 1 fatalLimited investigationFinal reportCessna 185 · Ketchikan, AKAn inadvertent stall while maneuvering for a precautionary landing. Factors include a partial loss of engine power for undetermined reasons, and inadequate altitude for the maneuver.NTSB LAX92LA062Accident · No injuriesLimited investigationFinal reportCessna 210M · Palo Alto, CAAn engine power loss due to a partial blockage of the fuel selector valve with debris.NTSB CHI92LA041Accident · No injuriesLimited investigationFinal reportCessna 210N · Frankfort, ILThe failure of the fss to notify ATC that the ariport was closed, atc's subsequent approach clearance to the closed airport, and the pilot's inability to maintain directional control on the icy runway. A factor in the accident was the icy runway conditions.NTSB CHI92LA031Accident · No injuriesLimited investigationFinal reportCessna 310R · South St Paul, MNThe inadequate design of the propeller hub assembly which resulted in metal fatigue and propeller blade separation during initial climbout.NTSB MIA92LA027Accident · 1 fatalLimited investigationFinal reportBeech BE-35 · St. Petersburg, FLThe passenger's loss of balance resulting from a previous impairment.NTSB ANC92LA007Accident · Minor injuriesLimited investigationFinal reportCessna U206 · Scammon Bay, AKThe pilot's failure to maintain airspeed during the aborted landing. Contributing to the accident was the unfavorable wind.NTSB ATL92LA010Accident · Minor injuriesLimited investigationFinal reportBeech A36 · Selma, ALThe fatigue failure of the engine crankshaft counterweight blade, which resulted from excessive wear of the counterweight pin bushings, due to corrosion from an unknown source.NTSB ANC92LA008Accident · No injuriesLimited investigationFinal reportCessna A185E · Dog Salmon Riv, AKThe pilot's failure to maintain airspeed. Contributing to the accident was the downdraft.NTSB ATL92LA004Accident · Serious injuriesLimited investigationFinal reportBeech F33A · Franklin, NCThe pilot's failure to lower the landing gear resulting in a gear up contact with the runway, and the eventual loss of control of the airplane.NTSB MIA91LA218Accident · No injuriesLimited investigationFinal reportCessna A188B · Yazoo City, MSSeparation of the right main landing gear during take off due to failure of the bolts which secure the gear to the airframe. Contributing to the accident was the failure of the pilot to abort the takeoff.NTSB CHI91LA288Accident · Minor injuriesLimited investigationFinal reportCessna 185F · Afton, MNThe pilot's inadvertent lowering of the wheels during the water landing.NTSB DEN91LA123Accident · No injuriesLimited investigationFinal reportCessna A185F · Conchas Dam, NMLanding gear locking mechanism loose, landing gear wheel deployed inadvertently, and maintenance alignment not performed. Factors were: propeller governor underspeed, maintenance adjustment not corrected, and lowering of flaps not performed.NTSB ANC91LA139Accident · No injuriesLimited investigationFinal reportCessna 206 · Kelly River, AKThe pilot's inadequate judgment in deciding to land a tricycle gear airplane on a sandbar.NTSB ANC91LA137Accident · No injuriesLimited investigationFinal reportCessna 185-F · Cordova, AKThe pilot's failure to maintain directional control of the airplane during the landing roll.NTSB ANC91LA131Accident · No injuriesLimited investigationFinal reportCessna 206 · Funnel Lake, AKThe pilot's failure to attain proper airspeed. Contributing to the accident was the high wind encountered during takeoff and the terrain.NTSB ANC91LA130Accident · Minor injuriesLimited investigationFinal reportCessna U206-G · Rainy Pass, AKThe pilot exceeded the climb performance of the aircraft.NTSB SEA91LA212Accident · No injuriesLimited investigationFinal reportCessna U206F · Nimrod, ORThe fractured crankshaft resulting in engine seizure followed by a forced landing on rough and uneven terrain resulting in separation of the nose gear.NTSB CHI91DCJ06Accident · 1 fatalFinal reportCessna A188D · Gothenburg, NEThe pilot's failure to maintain airspeed which resulted in a stall. A factor related to the accident was the pilot's abrupt handling of the airplane.NTSB CHI91FA266Accident · 1 fatalField investigationFinal reportBellanca 17-30A · Boyne City, MIThe pilot in command's failure to maintain proper altitude. A factor contributing to the accident was the pilot in command's diverted attention..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 MIA91LA197Accident · No injuriesLimited investigationFinal reportCessna A188B · Monticello, FLLoss of engine power due to undetermined reasons and the unsuitable terrain encountered during the forced landing.NTSB LAX91LA330Accident · Serious injuriesLimited investigationFinal reportBeech V-35 · Minden, NVThe pilot's failure to properly adjust the mixture setting prior to landing to ensure the continued operation of the engine.NTSB LAX91FA324Accident · 3 fatalField investigationFinal reportBeech 95-C55 · Granada Hills, CAA loss of directional control following an undetermined autopilot failure, during which the pilot failed to perform the emergency procedure to correct a mis-trim condition. Contributing to the accident was a perceived elevator control problem; the inability…NTSB CHI91DEM07Accident · No injuriesFinal reportCessna 188B · Munger, MIA premature liftoff by the pilot. A factor contributing to this accident was the soft runway surface and a stall/mush.NTSB ANC91LA108Accident · No injuriesLimited investigationFinal reportCessna 185 · Clarks Point, AKThe loss of directional control on the ground caused by the failure of the left brake disc. Contributing to the accident was the pilot-in-command's intentional ground loop of the airplane.NTSB ANC91LA103Accident · No injuriesLimited investigationFinal reportCessna 185 · Jago River, AKThe pilot's loss of directional control of the airplane during the landing roll. Contributing to the accident was the wet surface of the airstrip, the curve in the airstrip, and the vegetation which covered the entire airstrip.NTSB SEA91LA179Accident · No injuriesLimited investigationFinal reportCessna 188B · Palouse, WAThe pilot's failure to maintain proper runway alignment.NTSB SEA91LA167Accident · Minor injuriesLimited investigationFinal reportCessna A188B · Burley, IDPowerplant failure for undetermined reasons. Factors include in-flight collision with a tree.NTSB BFO91LA067Accident · Serious injuriesLimited investigationFinal reportCessna A185F · Norton, WVThe pilot's inadequate inflight decision which resulted in fuel exhaustion and the lost of engine power.NTSB SEA91FA157Accident · 3 fatalField investigationFinal reportBeech V35B · Roche Harbor, WAThe pilot's failure to plan his takeoff path to provide adequate terrain clearance. The rising terrain and dark night light conditions were contributing factors.NTSB ANC91FA090Accident · Minor injuriesField investigationFinal reportCessna 185A · Valdez, AKLoss of aircraft control for an undetermined reason during an approach to land.NTSB SEA91LA151Accident · No injuriesLimited investigationFinal reportBeech C33A · Brookings, ORThe pilot's improper flare for touchdown, and her improper recovery from a bounced landing.NTSB LAX91LA284Accident · No injuriesLimited investigationFinal reportBeech E-55 · Bakersfield, CAThe pilot's improper use of the landing gear retraction by selecting gear up instead of flaps up during the landing roll-out. Contributing to the accident was the lack of familiarity with the airplane.NTSB FTW91LA113Accident · No injuriesLimited investigationFinal reportCessna A188B · Lewisville, ARThe failure of the right brake line during a critical phase of operation.NTSB MIA91LA166Accident · Minor injuriesLimited investigationFinal reportCessna A188B · Doddsville, MSPoor planning decision by the pilot for failure to take into account the temperature extremes and what effect this would have on the ground roll distance. Contributing to the accident was his lack of total experience in the type of operation.NTSB FTW91DRA04Accident · No injuriesFinal reportCessna 188B · Wallis, TXThe partial power loss during a critical phase of flight. A factor was the lack of suitable terrain onto which a successful forced landing could have been executed.NTSB ANC91LA074Accident · No injuriesLimited investigationFinal reportCessna A185E · King Salmon, AKFuel exhaustion, the pilot's inadequate preflight and the inadequate fuel consumption calculations. Contributing to the accident was the soft terrain, and tundra.NTSB LAX91LA258Accident · No injuriesLimited investigationFinal reportBeech F33A · Mobile, AZThe failure of the pilot of the other aircraft to exit the runway onto the taxiway at a speed sufficient to stop prior to colliding with the stopped aircraft.NTSB ANC91LA069Accident · No injuriesLimited investigationFinal reportCessna 206 · Kahiltna River, AKThe pilot's excessive descent and lack of familiarity with the aircraft. Contributing to the accident was the soft condition of the sand bar.NTSB ANC91LA066Accident · No injuriesLimited investigationFinal reportCessna 207A · Eek, AKWas fuel contamination. Contributing factors are the engine vibrations and the rough vegetation upon which the airplane landed.NTSB NYC91LA153Accident · No injuriesLimited investigationFinal reportCessna 310R · Westerly, RIImproper installation of the right propeller which resulted in thread failure in the propeller hub and separation of the propeller in flight. A factor related to the accident was the right propeller striking the right main landing gear causing its separation…NTSB MIA91LA153Accident · No injuriesLimited investigationFinal reportCessna 210N · Fernandina Bch, FLFailure of the pilot to obtain proper assistance while taxiing the airplane near a parked airplane.NTSB ANC91LA063Accident · Serious injuriesLimited investigationFinal reportCessna 185 · Sterling, AKThe pilot's improper remedial action.NTSB FTW91DPG07Accident · No injuriesFinal reportCessna A188B · Eudora, ARThe pilot's exceeding the airplane's takeoff performance capability for the climatic conditions.NTSB NYC91LA234Accident · Minor injuriesLimited investigationFinal reportCessna 185F · Sanford, METhe pilot's improper procedure by not placing the fuel selector on the tank with the most fuel, which resulted in fuel starvation and a forced landing in trees.NTSB FTW91DRG02Accident · No injuriesFinal reportCessna 188 · La Feria, TXThe pilot exceeded the proper descent rate.NTSB LAX91LA187Accident · No injuriesLimited investigationFinal reportBeech F33A · Goodyear, AZThe pilot's failure to ensure that the airplane's landing gear was extended by the passenger who he was allowing fly the airplane. A contributing factor related to the pilot's inadequate supervision of the passenger.