NTSB investigations: Continental IO-520 series
29 cases on aircraft whose registry engine model is Continental IO-520 series, where the defining event was Loss of engine power (partial). 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
| 2008 | 2 |
|---|---|
| 2010 | 3 |
| 2011 | 2 |
| 2012 | 3 |
| 2013 | 2 |
| 2014 | 2 |
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 2 |
| 2024 | 2 |
| 2025 | 2 |
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.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('17032')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e.\"isDefiningEvent\" AND e.\"tier2Number\" = '342'))
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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('17032')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '342'))
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 WPR25LA228Accident · No injuriesClass 3 · LimitedPreliminary reportBeech V35 · Astoria, OROn July 22, 2025, about 1706 Pacific daylight time, a Beechcraft Bonanza V35, N3785Q, sustained substantial damage when it was involved in an accident near Astoria, Oregon. The pilot and passenger were not injured. The airplane was operated as a Title 14 Code…NTSB CEN25LA182Accident · No injuriesClass 3 · LimitedPreliminary reportBeech F33A · Houston, TXOn May 16, 2025, about 1459 central daylight time, a Beech F33A airplane, N6376S, was destroyed when it was involved in an accident near Houston, Texas. The pilot was not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91…NTSB ERA24FA318Accident · 2 fatalClass 3 · FieldFinal reportBeech A36 · Ronkonkoma, NYA loss of engine power during initial climb for undetermined reasons. Contributing to the outcome was the pilot's failure to maintain control of the airplane following the loss of engine power and his decision to perform an intersection takeoff which, reduced…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 ERA22LA235Accident · No injuriesClass 3 · LimitedFinal reportCessna 310 · Caryville, FLAn in-flight loss of engine power on both engines for undetermined reasons.NTSB ERA22FA126Accident · 1 fatalClass 3 · FieldFinal reportBeech 58 · Lexington, NCInadequate maintenance, which led to a partial loss of both right and left engine power during takeoff, and the pilot’s subsequent failure to maintain airspeed while maneuvering with one engine at low altitude. Contributing to the accident was the pilot’s…NTSB CEN21LA391Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 320 · Windthorst, TXA forced landing due to a loss of engine power on the right engine for a reason that could not be determined based on the available evidence.NTSB WPR21LA030Accident · 2 fatalClass 3 · LimitedFinal reportCessna 310 · Las Vegas, NVThe pilot’s failure to maintain the airplane’s minimum controllable airspeed while maneuvering with one engine inoperative. Also causal was the loss of power in the left engine due to oil starvation. Contributing to the accident were inadequate maintenance…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 CEN18LA350Accident · No injuriesLimited investigationFinal reportCessna A188 · Atchison, KSThe partial loss of engine power for reasons that could not be determined during the postaccident examination.NTSB CEN17LA328Accident · No injuriesLimited investigationFinal reportBeech A36 · Gonzales, LAA partial loss of engine power due to inadequate maintenance, including worn spark plugs and a leaking fuel hose fitting.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 CEN17LA104Accident · No injuriesLimited investigationFinal reportBeech D55 · Columbus, OHThe partial loss of left engine power during takeoff and initial climb, which led to a hard landing in gusting crosswind conditions. The reason for the loss of engine power could not be determined because postaccident examination of the left engine revealed…NTSB CEN16LA115Accident · No injuriesLimited investigationFinal reportBeech V35 · Seymour, INThe pilot's improper placement of the fuel selector handle between two tank positions, which resulted in a restricted fuel flow to the engine and the initial loss of engine power, and his improper decision to use the high-boost auxiliary fuel pump for an…NTSB CEN16LA082Accident · No injuriesLimited investigationFinal reportBeech V35B · Tahlequah, OKA partial loss of engine power shortly after takeoff due to an inadequately tightened fuel line. Also causal was the pilot's failure to extend the landing gear once the airplane was in a position to safely land on the runway.NTSB CEN15LA050Accident · Serious injuriesLimited investigationFinal reportCessna 401A · Fulton, MOA failure of the right engine magneto distributor drive gears, which resulted in a total loss of engine power during takeoff. Contributing to the accident was the operator’s failure to inspect and maintain the magnetos in accordance with the engine…NTSB CEN14CA395Accident · No injuriesData collectionFinal reportCessna A188B · Milford, NEThe pilot's improper engine mixture setting which reduced available engine power, and his inadvertent retraction of flaps which resulted in an impact with crops and terrain.NTSB CEN13FA476Accident · 2 fatalField investigationFinal reportBeechcraft F33A · Ennis, TXThe loss of engine power for reasons that could not be determined during postaccident examinations due to postcrash fire damage.NTSB ERA13LA214Accident · Serious injuriesLimited investigationFinal reportBeech 35-C33A · Knoxville, TNThe loss of engine power during takeoff for a reasons that could not be determined because postaccident examinations and testing revealed no anomalies that would have precluded normal operation.NTSB CEN12LA515Accident · No injuriesLimited investigationFinal reportBeech E-55 · Houston, TXA damaged ignition harness, which resulted in a partial loss of engine power.NTSB ERA12LA365Accident · Minor injuriesLimited investigationFinal reportCessna A188B · Dansville, NYA partial loss of engine power for reasons that could not be determined because postaccident examination of the engine did not reveal any anomalies that would have precluded normal operation.NTSB CEN12LA261Accident · No injuriesLimited investigationFinal reportBeech A36 · Albuquerque, NMThe partial loss of engine power due to an intake valve that was stuck in the open position.NTSB CEN11FA508Accident · 1 fatalField investigationFinal reportBeech A36 · Williston, NDThe pilot's improper fuel management, which resulted in fuel starvation and a partial loss of engine power while maneuvering at a low altitude.NTSB WPR11LA253Accident · No injuriesLimited investigationFinal reportCessna A188B · Pine Bluffs, WYA partial loss of engine power during takeoff for reasons that could not be determined because postaccident examination did not reveal any mechanical malfunctions or failures that would have precluded normal operation.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 CEN10LA399Accident · No injuriesLimited investigationFinal reportBeech V35A · Truth or Consequences, NMA total loss of engine power for undetermined reasons.NTSB ANC10FA029Accident · Minor injuriesField investigationFinal reportCessna 206 · Homer, AKThe fatigue failure of the No. 4 engine cylinder head resulting in a loss of engine power. Contributing to the severity of the accident was the pilot's decision to attempt a low altitude turn back to the airport, resulting in a loss of control.NTSB DEN08LA103Accident · No injuriesLimited investigationFinal reportCessna A188B · Lyons, KSthe loss of engine power for undetermined reasons. A contributing factor was the dirt embankment.NTSB ANC08LA032Accident · Serious injuriesLimited investigationFinal reportCessna 207 · Aniak, AKA partial loss of engine power for an undetermined reason. Contributing to the accident were the pilot's inadvertent encounter with IMC conditions, and a whiteout during his attempted go-around from an emergency landing approach.