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NTSB investigations: Continental IO-520 series, CT

19 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.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19652026

Where

Latest cases

Query with SQL

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" = 'CT' 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

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\" = 'CT' 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" = 'CT' 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

Run 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 ERA26LA289Accident · No injuriesClass 4 · LimitedFinal reportBeech A36 · Weston, CTThe in-flight opening of the engine cowling, which resulted in engine baffling separating from the airplane and impacting the right elevator.Jul 30, 2026 · N9144Q · Substantial damage NTSB ERA21LA319Accident · No injuriesClass 4 · LimitedFinal reportBeech F33A · Oxford, CTThe inadvertent operation of the landing handle during the landing roll, which resulted in a nose gear retraction and subsequent collision with the runway.Aug 7, 2021 · N4114S · Substantial damage NTSB GAA18CA374Accident · No injuriesData collectionFinal reportBeech V35B · Chester, CTThe pilot’s failure to maintain clearance from a hangar during taxi.Jun 21, 2018 · N6KG · Substantial damage NTSB ERA15LA053Accident · Minor injuriesLimited investigationFinal reportBeech F33A · Clinton, CTThe pilot's inadequate fuel planning and improper fuel management, which resulted in a total loss of engine power due to fuel starvation. Contributing to the accident was the pilot's failure to follow proper procedures in response to the loss of engine power.Nov 15, 2014 · N4548S · Substantial damage NTSB ERA11IA521Incident · No injuriesIncident investigationFinal reportBeech V35 · New Haven, CTThe in-flight fatigue failure of the engine’s crankshaft, which resulted in the separation of the forward portion of the crankshaft and the propeller.Sep 18, 2011 · N275BM · Minor damage NTSB ERA11CA226Accident · No injuriesData collectionFinal reportCessna U206C · Bridgeport, CTThe pilot's delayed decision to perform a go-around which resulted in a hard landing.Apr 2, 2011 · N100HA · Substantial damage NTSB NYC06LA219Accident · Minor injuriesLimited investigationFinal reportBeech F33A · South Windsor, CTA loosening of the fuel injector lines from the fuel manifold valve, which resulted in a partial loss of engine power.Sep 7, 2006 · N3708B · Substantial damage NTSB NYC02FA055Accident · 2 fatalField investigationFinal reportBeech V35B · Chester, CTThe pilot's failure to maintain adequate airspeed during the turn to final, which resulted in an inadvertent stall/spin. Factors included low ceilings and night lighting conditions.Jan 31, 2002 · N32BR · Destroyed NTSB IAD01LA016Accident · Serious injuriesLimited investigationFinal reportBellanca BL-17-30A · Union, CTpilot's mismanagement of the available fuel supply, which resulted in a loss of engine power due to fuel starvation.Nov 24, 2000 · N280H · Substantial damage NTSB NYC00IA131Incident · No injuriesIncident investigationFinal reportBeech BE-58 · Windsor Locks, CTInadequate screw length information provided by the manufacturer, which allowed an inadvertent installation of a holding screw that was too long, and the subsequent fracture of the switch/circuit breaker. Factors included a short circuit of the beacon motor,…May 9, 2000 · N9044V · Minor damage NTSB NYC99LA156Accident · Serious injuriesLimited investigationFinal reportCessna 185E · East Haddam, CTThe loss of engine power due to water in the fuel system.Jun 23, 1999 · N3385L · Substantial damage NTSB NYC91LA043Accident · Minor injuriesLimited investigationFinal reportCessna 210L · New Haven, CTThe failure of the vehicle driver to adequately monitor the radio/traffic pattern. Factors related to the accident were: darkness, the aircraft's loss of electrical power after activating the runway lights and entering the pattern, and the lack of visual…Dec 6, 1990 · N5280V · Destroyed NTSB NYC89FA059Accident · 1 fatalField investigationFinal reportBeech A36 · Bridgeport, CTTwice prior to being established on final the pilot was asked if he was getting proper indications for the approach to land. Contact was subsequently lost while the pilot was attempting to make an ILS approach to runway 06 at Bridgeport. The aircraft was…Dec 24, 1988 · N262C · Destroyed NTSB NYC83FA198Accident · 3 fatalField investigationFinal reportCessna 210H · Marlborough, CTThe acft collided with trees and the ground during an approach to land on a foggy night at an arpt with no instrument approach facilities or control. The 67 year old plt had canceled his IFR flt plan at 2110 EDT. The accident occurred at 2115 EDT. The plt and…Aug 1, 1983 · N1968X · Destroyed NTSB NYC82FA188Accident · 1 fatalField investigationFinal reportCessna 310R · Danbury, CTApproaching the destination arpt, the plt was advised to plan a VOR rwy 24 approach & that he would be turned just inside the faf. At 0055, newark a/c identified the acft 3 mi north of the arpt still at 2,000 ft & asked the plt if he was able to execute the…Aug 9, 1982 · N98841 · Destroyed NTSB NYC80FA034Accident · No injuriesClosedBeech 95-C55 · Hartford, CTApr 10, 1980 · N466AS · Substantial damage NTSB NYC75FNE27Accident · Serious injuriesClosedCessna 210 · Meriden, CTJun 5, 1974 · N1175Q · Substantial damage NTSB NYC69F0385Accident · Serious injuriesClosedCessna U206 · East Granby, CTMar 20, 1969 · N8019Z · Destroyed NTSB NYC66F0082Accident · No injuriesClosedBeechcraft 35 · Hardwinton, CTJul 9, 1965 · N3329V · Substantial damage