NTSB investigations: Continental IO-520 series, CA
405 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
| 1965 | 10 |
|---|---|
| 1966 | 8 |
| 1967 | 17 |
| 1968 | 7 |
| 1969 | 8 |
| 1970 | 9 |
| 1971 | 6 |
| 1972 | 9 |
| 1973 | 13 |
| 1974 | 7 |
| 1975 | 11 |
| 1976 | 8 |
| 1977 | 17 |
| 1978 | 16 |
| 1979 | 23 |
| 1980 | 10 |
| 1981 | 7 |
| 1982 | 10 |
| 1983 | 9 |
| 1984 | 12 |
| 1985 | 4 |
| 1986 | 3 |
| 1987 | 2 |
| 1988 | 4 |
| 1989 | 3 |
| 1990 | 8 |
| 1991 | 4 |
| 1992 | 8 |
| 1993 | 3 |
| 1994 | 2 |
| 1995 | 9 |
| 1996 | 7 |
| 1997 | 7 |
| 1998 | 4 |
| 1999 | 4 |
| 2000 | 2 |
| 2001 | 3 |
| 2002 | 6 |
| 2003 | 3 |
| 2004 | 7 |
| 2005 | 10 |
| 2006 | 8 |
| 2007 | 6 |
| 2008 | 7 |
| 2009 | 7 |
| 2010 | 3 |
| 2011 | 4 |
| 2012 | 5 |
| 2013 | 4 |
| 2014 | 2 |
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 8 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 5 |
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\" = 'CA' 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" = 'CA' 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 WPR27LA010Accident · No injuriesClass 4 · LimitedInvestigation openCessna A185F · Madera, CANTSB WPR26LA323Accident · No injuriesClass 4 · LimitedInvestigation openBeech E-55 · Mecca, CANTSB WPR26LA240Accident · Serious injuriesClass 4 · LimitedFinal reportBellanca 17-30A · Santa Paula, CAThe pilot’s improper fuel management, which resulted in fuel starvation and a loss of engine power.NTSB WPR26LA171Accident · No injuriesClass 4 · LimitedFinal reportCessna 210 · Redding, CAThe pilot’s failure to extend the landing gear before landing due to distraction and his failure to conduct the before landing checklist.NTSB WPR26FA130Accident · 1 fatalClass 3 · FieldPreliminary reportBeech A36 · Olympic Valley, CAOn March 22, 2026, at 1716 Pacific daylight time, a Beech A36, N2882W, was substantially damaged when it was involved in an accident near Olympic Valley, California. The pilot was fatally injured. The airplane was operated as a Title14 Code of Federal…NTSB WPR25FA169Accident · 6 fatalClass 3 · FieldPreliminary reportCessna 414 · San Diego, CAOn June 08, 2025, at 1230 Pacific daylight time, a Cessna 414A, N414BA, was substantially damaged when it was involved in an accident in San Diego, California. The pilot and five passengers were fatally injured. The airplane was operated as a Title 14 Code of…NTSB WPR25LA113Accident · Minor injuriesClass 4 · LimitedFinal reportBeech E-55 · Van Nuys, CAAn in-flight collision with a bird during an approach to land.NTSB WPR24LA317Accident · No injuriesClass 4 · LimitedFinal reportYakovlev YAK-50 · Watsonville, CAThe Yak-50 pilot’s failure to maintain clearance from another airplane while taxiing and maneuvering. Contributing to the accident was the pilot’s inattention due to a distraction inside the cockpit.NTSB WPR24LA314Accident · Minor injuriesClass 3 · LimitedFinal reportCessna U206G · West Sacramento, CAFailure of the No. 4 cylinder fuel injection assembly tube and subsequent total loss of engine power.NTSB WPR24LA193Accident · No injuriesClass 3 · LimitedFinal reportCessna A185F · Monument Hills, CAA total loss of engine power for reasons that could not be determined.NTSB WPR23LA342Accident · No injuriesClass 4 · LimitedFinal reportCessna T210H · Santa Rosa, CAThe pilot’s failure to configure the landing gear during the landing approach.NTSB WPR23LA264Accident · Minor injuriesClass 3 · LimitedFinal reportCessna A185F · La Mesa, CAA total loss of engine power for undetermined reasons.NTSB WPR23FA173Accident · 3 fatalClass 3 · FieldFinal reportBeech A36 · Big Bear, CAThe pilot’s exceedance of the airplane’s critical angle of attack and failure to maintain adequate airspeed on short final while operating in adverse wind conditions, which resulted in an aerodynamic stall and impact with terrain.NTSB WPR23LA077Accident · Serious injuriesClass 3 · LimitedFinal reportBeech V35B · Livermore, CAThe pilot’s inadvertent use of the mixture control instead of the throttle, which resulted in fuel starvation and the subsequent loss of engine power.NTSB WPR22FA054Accident · 4 fatalClass 3 · FieldFinal reportBeech V35 · Visalia, CAThe pilot’s loss of control due to spatial disorientation shortly after takeoff. Contributing to the accident was the pilot’s decision to depart into night instrument meteorological conditions.NTSB WPR21FA273Accident · 3 fatalClass 3 · FieldFinal reportBeech V35 · Angwin, CAThe pilot's exceedance of the airplane’s critical angle of attack during an aborted landing after an unstabilized approach and hard landing, which resulted in an aerodynamic stall and impact with trees and terrain. Contributing to the accident was the pilot’s…NTSB WPR20LA295Accident · 2 fatalClass 3 · LimitedFinal reportBeech 35 · Three Rivers, CAThe pilot’s controlled flight into terrain while operating in conditions of reduced visibility due to smoke.NTSB WPR20CA275Accident · No injuriesClass 4 · Data collectionFinal reportCessna A185 · Susanville, CAThe pilot's failure to maintain directional control during takeoff with a tailwind, which resulted in a subsequent collapse of the right main landing gear.NTSB WPR20CA204Accident · No injuriesClass 4 · Data collectionFinal reportCessna A185 · San Diego, CAThe pilot's failure to maintain airplane control during landing with a crosswind and excessive braking action, which resulted in the airplane nosing over.NTSB WPR20CA090Accident · No injuriesData collectionFinal reportBeech 36 · Avalon, CAThe pilot's improper approach and delayed decision to apply corrective action, which resulted in a runway overrun, impact with a berm, and a subsequent nose-over.NTSB ANC20FA005Accident · 1 fatalClass 3 · FieldFinal reportBeech V35 · Blythe, CAA loss of control in flight due to the pilot’s decision to fly into a mountain range, at night, in conditions conducive to high wind, mountain waves, and turbulence.NTSB GAA19CA523Accident · No injuriesData collectionFinal reportCessna A185 · San Carlos, CAThe pilot's failure to maintain directional control during the landing roll, which resulted in a ground loop.NTSB WPR19LA238Accident · No injuriesClass 3 · LimitedFinal reportBeech 36 · Half Moon Bay, CAA total loss of engine power for reasons that could not be determined.NTSB WPR19LA166Accident · No injuriesClass 3 · LimitedFinal reportCessna 210 · Romona, CAA total loss of engine power due to oil starvation as a result of the failure of an oil filter adapter fiber gasket.NTSB WPR19FA086Accident · 3 fatalClass 3 · FieldFinal reportBeech D55 · Stallion Springs, CAThe pilot’s continued visual flight into instrument meteorological conditions associated with mountain obscuration conditions, which resulted in controlled flight into rising terrain. Contributing to the accident was the pilot’s failure to obtain a weather…NTSB WPR19LA016Accident · Minor injuriesClass 3 · LimitedFinal reportCessna T210 · FiIlmore, CAA total loss of engine power as a result of the pilot’s failure to remove a towel from the engine’s air induction following maintenance.NTSB WPR19FA001Accident · 1 fatalClass 2 · FieldFinal reportBeech V35 · La Verne, CAThe pilot's failure to maintain clearance from trees during a visual approach for landing. Contributing to the accident was the pilot's distraction during the approach.NTSB ANC18LA043Accident · No injuriesClass 3 · LimitedFinal reportCessna 210 · Ramona, CAThe failure of the engine-driven hydraulic pump due to the installation of improper cap screws, which resulted in a gap in the pump housing, a subsequent hydraulic leak, and the landing gear collapsing.NTSB WPR18LA058Accident · No injuriesLimited investigationFinal reportCessna 210 · San Bernardino, CAThe fatigue failure of the left main landing gear (MLG) saddle, which resulted in the pilot's inability to extend the left MLG. Contributing to the accident was the pilot's improper decision to fly the airplane before the annual inspection was completed and…NTSB WPR18LA043Accident · Minor injuriesClass 3 · LimitedFinal reportBeech A36 · Rio Oso, CAAn in-flight fire due to electrical arc corrosion of the fuel line.NTSB WPR17LA136Accident · Serious injuriesClass 3 · LimitedFinal reportCessna 310R · Santa Ana, CAThe pilot’s inability to maintain adequate airspeed after a loss of power to the right engine while maneuvering in the pattern to return to the airport. Contributing to the accident were the loss of power to the right engine for reasons that could not be…NTSB WPR17FA125Accident · 1 fatalField investigationFinal reportBeech 95 C55 · Mountain Ranch, CAThe pilot's continued visual flight rules flight into instrument meteorological conditions and mountain obscuration that resulted in controlled flight into trees and terrain.NTSB GAA17CA310Accident · No injuriesData collectionFinal reportCessna A185 · Fall River Mills, CAThe pilot’s failure to maintain directional control during the landing roll.NTSB GAA17CA270Accident · No injuriesData collectionFinal reportCessna A185 · Columbia, CAThe pilot’s failure to maintain directional control in tailwind and crosswind conditions.NTSB WPR17LA070Accident · Minor injuriesClass 3 · LimitedFinal reportBeech F33A · Pomona, CAThe total loss of engine power for reasons that could not be determined because postaccident examination of the engine revealed no mechanical malfunctions or failures that would have precluded normal operation.NTSB WPR17LA059Accident · Minor injuriesLimited investigationFinal reportBeech E 55 · Bakersfield, CAThe pilot’s failure to select the proper fuel boost pump setting for the left auxiliary fuel pump, which allowed for an excessive fuel flow to the left engine, which resulted in a total loss of engine power and airplane control during an attempted go-around.NTSB GAA16CA411Accident · No injuriesData collectionFinal reportBeech F33 · Blythe, CAThe pilot's failure to attain adequate airspeed to climb and her exceedance of the airplane's critical angle-of-attack during takeoff initial climb at night, which resulted in an aerodynamic stall at low altitude.NTSB WPR15FA166Accident · 1 fatalField investigationFinal reportCessna 210F · Pleasanton, CAThe pilot’s continued visual flight into instrument flight rules conditions, which resulted in his failure to maintain sufficient clearance from rising terrain.NTSB WPR15FA088Accident · 2 fatalField investigationFinal reportBeech 36 · Mountain Pass, CAAn in-flight loss of control for reasons that could not be determined based on available information.NTSB WPR15LA042Accident · No injuriesLimited investigationFinal reportCessna U206G · La Verne, CAThe pilot's loss of directional control during the landing roll for reasons that could not be determined, because postaccident examination of the nosewheel assembly revealed no anomalies that would have precluded normal operation.NTSB WPR14FA174Accident · 1 fatalField investigationFinal reportCessna 210E · Richmond, CABoth pilots’ failure to maintain adequate clearance from each other during cruise flight while in visual contact with each other. Contributing to the accident was the unexpected abrupt maneuver made by the other pilot.NTSB WPR14CA026Accident · No injuriesData collectionFinal reportCessna T210 - H · Lodi, CAThe student pilot's inadequate flare and failure to maintain directional control during landing.NTSB WPR13CA249Accident · No injuriesData collectionFinal reportBeech V35B · Kernville, CAThe pilot's failure to maintain directional control during the landing roll in gusty wind conditions.NTSB WPR13LA238Accident · No injuriesLimited investigationFinal reportCessna 310R · Bakersfield, CAThe failure of the right main landing gear link assembly, which resulted in the right main landing gear collapsing during landing.NTSB WPR13LA189Accident · No injuriesLimited investigationFinal reportBeech 95-C55 · Santa Monica, CAThe left main wheel locking up during the landing roll, which resulted in the deflation of the tire, the left main landing gear collapse, and the subsequent loss of control during the runway exit.NTSB WPR13LA052Accident · Minor injuriesLimited investigationFinal reportCessna U206 · Van Nuys, CAA partial loss of engine power during cruise flight due to fatigue fractures of two crankshaft gear teeth from corrosion pitting, which resulted in an off-airport forced landing and collision with obstacles on the ground.NTSB WPR13LA047Accident · No injuriesLimited investigationFinal reportCessna 210 · San Rafael, CAThe loss of engine power during initial climb for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.NTSB WPR12LA443Accident · No injuriesLimited investigationFinal reportBeech V35A · Torrance, CAThe pilot's failure to maintain directional control during taxi, which resulted in a collision with a parked vehicle.NTSB WPR12LA188Accident · No injuriesLimited investigationFinal reportHawker Beech V35B · Coalinga, CAThe pilot's improper fuel management, which resulted in a loss of engine power due to fuel starvation.NTSB WPR12LA185Accident · No injuriesLimited investigationFinal reportBellanca 17-30A · Cloverdale, CAThe pilot’s improper fuel management, which resulted in a loss of engine power during climb due to fuel starvation.