NTSB investigations: Continental IO-520 series, 1997

6 cases on aircraft whose registry engine model is Continental IO-520 series, where the first occurrence was “In flight encounter with weather”. 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

19822026

NTSB investigations: Continental IO-520 series, 1997 per year, 1982–2026: 123 cases
1982	7
1983	9
1984	8
1985	4
1986	7
1987	2
1988	5
1989	8
1990	1
1991	1
1992	2
1993	3
1994	3
1995	4
1996	2
1997	6
1998	7
1999	6
2000	1
2001	1
2002	9
2003	4
2004	8
2005	5
2006	7
2007	3

Where

Open the map

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 year(c."eventDate") = 1997 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') AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 240)) 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 year(c.\"eventDate\") = 1997
    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')
      AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 240))
  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") = 1997
  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')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 240))
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 CHI98LA059Accident · 2 fatalLimited investigationFinal reportBellanca 17-30 · Independence, KSthe pilot's intentional flight into adverse weather. Contributing factors were low ceilings, fog, and the guy wire.Dec 8, 1997 · N4854V · Destroyed NTSB ANC97LA134Accident · No injuriesLimited investigationFinal reportCessna 207A · Bethel, AKThe pilot's inadequate evaluation of the weather conditions. Factors in the accident were a downdraft, crosswind conditions, and rough/uneven terrain.Sep 7, 1997 · N7318U · Substantial damage NTSB ANC97FA121Accident · 3 fatalField investigationFinal reportCessna U206G · Halibut Cove, AKThe pilot's improper evaluation of the weather conditions which led the pilot to maneuver within the confines of the lake to avoid surrounding terrain and a subsequent inadvertent stall. Factors were the terrain-induced turbulence and gusts.Aug 12, 1997 · N756AD · Destroyed NTSB ANC97LA047Accident · Minor injuriesLimited investigationFinal reportCessna 207 · Teller, AKthe pilot's inadequate compensation for wind conditions, and failure to maintain directional control during the landing. Factors related to the accident were: a crosswind, a downdraft, the pilot's delayed go-around, improper raising of the flaps, and…Apr 3, 1997 · N6299H · Substantial damage NTSB ANC97LA027Accident · No injuriesLimited investigationFinal reportCessna 207 · Chevak, AKthe pilot's continued VFR flight into instrument meteorological conditions, his misjudgment of distance and altitude during the approach to land, and his failure to attain a proper touchdown point during the landing. A factor relating to the accident was: the…Feb 22, 1997 · N7389U · Substantial damage NTSB LAX97FA089Accident · 2 fatalField investigationFinal reportBeech F33A · Mt San Jacinto, CAcontinued VFR flight by the pilot into instrument meteorological conditions (IMC), and his failure to maintain proper altitude or clearance from mountainous terrain. Factors relating to the accident were: the high/mountainous terrain, and the adverse weather…Jan 13, 1997 · N31706 · Destroyed