NTSB investigations: Continental IO-520 series, AZ
167 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 | 3 |
|---|---|
| 1966 | 2 |
| 1967 | 4 |
| 1968 | 6 |
| 1969 | 2 |
| 1970 | 7 |
| 1971 | 1 |
| 1972 | 1 |
| 1973 | 2 |
| 1974 | 5 |
| 1975 | 3 |
| 1976 | 6 |
| 1977 | 8 |
| 1978 | 8 |
| 1979 | 7 |
| 1980 | 5 |
| 1981 | 6 |
| 1982 | 5 |
| 1983 | 4 |
| 1984 | 4 |
| 1985 | 2 |
| 1986 | 1 |
| 1987 | 2 |
| 1988 | 3 |
| 1990 | 1 |
| 1991 | 3 |
| 1992 | 3 |
| 1993 | 3 |
| 1994 | 3 |
| 1996 | 2 |
| 1997 | 2 |
| 1998 | 2 |
| 1999 | 1 |
| 2000 | 4 |
| 2001 | 3 |
| 2002 | 3 |
| 2003 | 4 |
| 2004 | 3 |
| 2005 | 2 |
| 2006 | 3 |
| 2007 | 2 |
| 2008 | 1 |
| 2009 | 2 |
| 2010 | 5 |
| 2011 | 2 |
| 2013 | 1 |
| 2014 | 1 |
| 2015 | 3 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 1 |
| 2022 | 3 |
| 2023 | 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\" = 'AZ' 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" = 'AZ' 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 WPR26LA236Accident · No injuriesClass 3 · LimitedPreliminary reportBeech S35 · Dome, AZOn June 25, 2026, about 1125 mountain standard time, a Beech S35, N6040F, sustained substantial damage when it was involved in an accident near Dome, Arizona. The pilot and three passengers were not injured. The airplane was operated as a Title 14 Code of…NTSB WPR24FA054Accident · 1 fatalClass 3 · FieldFinal reportBeech A36 · Topock, AZThe failure of the No. 4 connecting rod due to oil starvation, which resulted in a loss of engine power, inflight fire, and a subsequent off-airport emergency landing on rough desert terrain. Contributing to the accident was the pilot’s decision to attempt a…NTSB WPR23LA022Accident · Serious injuriesClass 3 · LimitedFinal reportBeech V35B · Nogales, AZThe pilot’s failure to establish a positive rate of climb before retracting the landing gear when he executed an aborted landing, which resulted in a propeller strike, diminished climb performance, and the inadvertent contact with terrain.NTSB WPR22LA091Accident · No injuriesClass 4 · LimitedFinal reportCessna A185F · Gila Bend, AZThe pilot's failure to maintain directional control during the landing rollNTSB WPR22LA083Accident · Minor injuriesClass 3 · LimitedFinal reportBeech F33A · Williams, AZThe pilot’s activation of the auxiliary fuel boost pump shortly after takeoff, which resulted in an excess amount of fuel to the engine and a total loss of engine power.NTSB WPR19LA128Accident · No injuriesClass 3 · LimitedFinal reportBeech 35 · Sedona, AZThe partial loss of engine power due to deteriorated O-rings in the throttle metering assembly. Contributing to the accident was non-compliance with the manufacturer's recommended throttle metering assembly overhaul schedule.NTSB WPR18FA266Accident · 1 fatalClass 2 · FieldFinal reportBeech 33 · Cottonwood, AZThe pilot's mismanagement of the available fuel, which resulted in a total loss of engine power due to fuel starvation.NTSB WPR18LA263Accident · Serious injuriesClass 3 · LimitedFinal reportCessna A185 · Bullhead City, AZThe pilot’s diverted attention during takeoff initial climb, which resulted in a collision with rising terrain.NTSB GAA18CA256Accident · No injuriesData collectionFinal reportCessna A185 · Chandler, AZThe pilot’s failure to maintain directional control during landing in gusting tailwind conditions.NTSB WPR17LA144Accident · No injuriesLimited investigationFinal reportCessna U206F · Page, AZThe failure of the throttle control cable due to fatigue and maintenance personnel’s failure to replace the cable at the last engine overhaul, which resulted in the pilots’ inability to control engine power and led to a precautionary landing during which the…NTSB WPR17FA045Accident · 4 fatalField investigationFinal reportCessna T210K · Payson, AZThe non-instrument-rated pilot's improper decisions to begin and to continue a flight under visual flight rules into instrument meteorological conditions, which resulted in controlled flight into terrain.NTSB GAA16CA013Accident · No injuriesData collectionFinal reportBeech F33 · Marana, AZThe student pilot's failure to maintain sufficient airspeed during the base to final turn resulting in an inadvertent aerodynamic stall and impact with terrain during recovery by the flight instructor.NTSB WPR16LA015Accident · No injuriesLimited investigationFinal reportCessna 310J · Tucson, AZThe insufficient right main landing gear (MLG) down-lock tension due to maintenance personnel's failure to perform a rigging procedure during the airplane's most recent inspection, which resulted in the right MLG collapsing during landing.NTSB WPR15LA183Accident · No injuriesLimited investigationFinal reportBeech E33A · Tucson, AZA loss of left braking action for reasons that could not be determined because postaccident examination did not reveal any evidence of preimpact mechanical failures or malfunctions that would have precluded normal operation, which resulted in a loss of…NTSB WPR14CA110Accident · Minor injuriesData collectionFinal reportBeech V35A · Globe, AZThe pilot's inadequate glide path and failure to maintain adequate airspeed during final approach, which resulted in an aerodynamic stall.NTSB WPR13LA319Accident · No injuriesLimited investigationFinal reportCessna T210K · Phoenix, AZThe collapse of the left main landing gear due to a broken gear tooth in the landing gear actuator.NTSB WPR11LA305Accident · Minor injuriesLimited investigationFinal reportCessna U206 · Nogales, AZThe pilot did not maintain airplane control during the initial climb.NTSB WPR11LA292Accident · No injuriesLimited investigationFinal reportCessna 320F · Phoenix, AZThe mechanic's failure to properly secure the nose landing gear actuator push-pull tube to the landing gear door hinge clevis, which resulted in the gear jamming and not fully retracting after takeoff.NTSB WPR10FA473Accident · 1 fatalField investigationFinal reportHawker Beechcraft F33 · Phoenix, AZA partial loss of engine power during approach for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.NTSB WPR10LA357Accident · Serious injuriesLimited investigationFinal reportBeech A36 · Phoenix, AZA loss of engine power during descent due to fuel starvation that resulted from the pilot's mismanagement of the fuel system.NTSB WPR10FA305Accident · 1 fatalField investigationFinal reportHawker Beechcraft A36 · Seligman, AZThe pilot's failure to maintain clearance from mountainous terrain in the dark night.NTSB WPR10LA280Accident · No injuriesLimited investigationFinal reportBeech F33 · Marana, AZThe loss of engine power while maneuvering to land for undetermined reasons.NTSB WPR10FA228Accident · 1 fatalField investigationFinal reportCessna U206G · Yuma, AZThe pilot's loss of situational awareness and failure to maintain aircraft control while maneuvering at low altitude. Contributing to the accident was glare from the rising sun.NTSB WPR09LA422Accident · No injuriesLimited investigationFinal reportCessna 210K · Show Low, AZA total loss of engine power due to the displaced oil filter adapter gasket, which resulted in an oil leak and oil exhaustion. Contributing to the accident was the unsuitable terrain for a forced landing.NTSB WPR09CA199Accident · No injuriesData collectionFinal reportCessna A185F · Bisbee, AZThe flight instructor's inadequate supervision of the flight and inadequate recovery from a bounced landing.NTSB SEA08CA099Accident · No injuriesData collectionFinal reportBeechcraft 35-C33A · Prescott, AZFuel starvation due to the pilot's improper preflight and failure to select a tank containing fuel before takeoff.NTSB LAX08CA039Accident · No injuriesData collectionFinal reportCessna 310R · Phoenix, AZThe pilot's selection of a wrong taxi route, inadequate visual lookout, failure to maintain separation from ground obstacles, and excessive taxi speed.NTSB SEA07LA118Accident · Serious injuriesLimited investigationFinal reportBeech V35B · Kayenta, AZThe overstress separation of both ruddervators during cruise flight. Contributing to the accident was the flight's encounter with turbulence.NTSB LAX07LA024Accident · No injuriesLimited investigationFinal reportCessna U206G · Willcox, AZThe pilot's misjudged flare and porpoising during landing.NTSB LAX06FA130Accident · 2 fatalField investigationFinal reportBeech F33A · Kingman, AZThe noninstrument rated pilot's cruise flight into instrument meteorological conditions, and his failure to maintain control of the airplane, which resulted in an uncontrolled descent, and an in-flight collision with terrain. Factors associated with the…NTSB LAX06FA099Accident · 1 fatalField investigationFinal reportBeechcraft F33A · Buckeye, AZThe student pilot's failure to maintain aircraft control for undetermined reasons.NTSB LAX06CA042Accident · Minor injuriesData collectionFinal reportCessna A185E · Show Low, AZthe pilot's inadequate compensation for crosswind conditions and failure to maintain directional control, which resulted in a ground loop.NTSB LAX05LA110Accident · No injuriesLimited investigationFinal reportCessna A185E · Tucson, AZa loss of directional control due to the failure of unknown maintenance personnel to install the tailwheel-locking collar, and the inadequate maintenance inspection of the worn tailwheel steering arm.NTSB LAX04LA149Accident · No injuriesLimited investigationFinal reportCessna 402A · Peach Springs, AZthe pilot's inadequate flare and touchdown that imparted high side loadings on the right main landing gear, which resulted in an overload failure of the landing gear bellcrank and the collapse of that gear.NTSB LAX04LA142Accident · No injuriesLimited investigationFinal reportCessna A185F · Tucson, AZthe pilot's inadequate compensation for the quartering tailwind and failure to maintain directional control during landing rollout.NTSB LAX04LA131Accident · No injuriesLimited investigationFinal reportCessna 185F · Mesa, AZthe pilot's inadequate compensation for the crosswind and his failure to maintain directional control, which resulted in an inadvertent ground loop. A factor in this accident was the pilot's diverted attention.NTSB DEN03FAMS1Accident · 2 fatalMissing aircraftFinal reportBeech F33A · Greer, AZThe airplane is missing for unknown reason.NTSB LAX03LA216Accident · Serious injuriesLimited investigationFinal reportCessna 210D · Carefree, AZfuel exhaustion due to a crack on the elbow fitting to the gascolator resulted in a fuel leak.NTSB LAX03LA139Accident · 1 fatalLimited investigationFinal reportAero Commander 200D · Corona De Tucso, AZThe pilot's failure to maintain an adequate clearance from obstructions while performing low level passes. The pilot's physical impairment due to a high blood alcohol level was also causal.NTSB LAX03LA080Accident · No injuriesLimited investigationFinal reportBeech S-35 · Quartzsite, AZThe driver of the vehicle did not stop prior to crossing the airstrip as directed by airstrip signage.NTSB LAX02LA233Accident · No injuriesLimited investigationFinal reportBeech S35 · St. Johns, AZThe pilot's failure to maintain airplane control following an encounter with a wind gust.NTSB LAX02LA204Accident · No injuriesLimited investigationFinal reportBeech V35A · Cottonwood, AZThe loss of engine power as a result of the failure of the #1 lower connecting rod bolt due to fatigue.NTSB LAX02LA171Accident · No injuriesLimited investigationFinal reportCessna 206 · Mohave Valley, AZthe pilot's failure to maintain directional control.NTSB LAX01FA279Accident · 2 fatalField investigationFinal reportBeech F-33A · Mobile, AZThe flying pilot's initiation of an intentional maneuver at an altitude inadequate to maintain terrain clearance. Low altitude flight was a contributing factor.NTSB LAX01LA139Accident · Minor injuriesLimited investigationFinal reportBeech F-33A · Mobile, AZThe certified flight instructor's inadequate supervision of the dual student who failed to recognize the extent of the crosswind and lost directional control. A factor in the accident was the variable wind condition.NTSB LAX01LA072Accident · Minor injuriesLimited investigationFinal reportBeech V35B · Mesa, AZThe pilot's improper fuel management in cruise flight that resulted in a loss of engine power, because of fuel starvation, and a collision with a fence during the subsequent forced landing.NTSB LAX00LA243Accident · No injuriesLimited investigationFinal reportCessna A185F · Marana, AZthe pilot's excessive use of wheel brakes during the landing roll resulting in the airplane's nosing over.NTSB LAX00LA164Accident · No injuriesLimited investigationFinal reportCessna U206G · Parker, AZThe failure of the pilot to obtain the proper airspeed during landing, which resulted in a hard landing and subsequent porpoise down the runway.NTSB LAX00LA095Accident · Minor injuriesLimited investigationFinal reportCessna 210E · Glendale, AZthe pilot's attempt to go-around with inadequate altitude and airspeed available, resulting in a power demand that exceeded the capability of the aircraft. The fully extended gear and flaps were factors in this accident.NTSB LAX00LA074Accident · No injuriesLimited investigationFinal reportBeech F-33A · Mobile, AZthe manufacturer representative's improper reinstallation of the crankshaft counterweight snap rings which subsequently separated, allowing the crankshaft counterweight to contact the crankshaft resulting in a total power loss of engine power.