NTSB investigations, IL

9 cases where the first occurrence was “Gear not extended”.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19872026

NTSB investigations, IL per year, 1987–2026: 9 cases
1987	2
1988	2
1989	1
1990	2
1992	1
1994	1

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 c."eventStateOrRegion" = 'IL' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 196) 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\" = 'IL' AND c.\"eventCountry\" = 'USA'
    AND c.\"mKey\" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 196)
  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" = 'IL' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 196)
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 CHI94IA081Incident · No injuriesIncident investigationFinal reportBoeing 737-130 · Chicago, ILAn inadequate procedure for handling of wheel chocks by company maintenance and operations personnel. Factors associated with this accident were an inadequate inspection of the airplane by company maintenance personnel, and an inadequate pre-flight inspection…Feb 10, 1994 · N408PE · Minor damage NTSB CHI92FA290Accident · No injuriesField investigationFinal reportBeech B55 · Joliet, ILThe pilot's inadvertent wheels up landing.Sep 23, 1992 · N557T · Substantial damage NTSB CHI90LA141Accident · No injuriesLimited investigationFinal reportPiper PA-31-350 · Plainfield, ILThe pilot's failure to insure that the landing gear was extended and locked prior to touchdown.May 30, 1990 · N62869 · Substantial damage NTSB CHI90LA080Accident · No injuriesLimited investigationFinal reportBeech V35 · West Chicago, ILFailure of the pilot to extend the gear, which resulted in an inadvertent wheels-up landing.Feb 13, 1990 · N9582Q · Substantial damage NTSB CHI89LA098Accident · No injuriesLimited investigationFinal reportCessna P210N · Wheeling, ILFailure of the pilot to extend the landing gear, which resulted in a wheels-up landing.May 30, 1989 · N4763P · Substantial damage NTSB CHI88LA208Accident · No injuriesLimited investigationFinal reportBeech C55 · Cahokia, ILWhile on a maintenance test hop after annual inspection, the pilot failed to insure that the landing gear was extended before touchdown. The pilot stated that the gear handle was placed in the gear down position, and that no gear warning horn sounded during…Aug 15, 1988 · N19RE · Substantial damage NTSB CHI88LA137Accident · No injuriesLimited investigationFinal reportPiper PA-24-250 · Mattoon, ILUpon return from a local aerial photography flight, the pilot failed to ensure that the aircraft landing gear was extended, down and locked. When the aircraft touched down, the gear was only extended approximately 10%; it collapsed fully when it contacted the…Jun 16, 1988 · N8226P · Substantial damage NTSB CHI88LA022Accident · No injuriesLimited investigationFinal reportPiper PA-30B · Decatur, ILThe aircraft experienced a landing with the gear retracted. The pilot stated that he perceived the yellow light indication for the landing gear to mean 'down', instead of looking for a green light.Nov 10, 1987 · N7865Y · Substantial damage NTSB CHI87LA220Accident · No injuriesLimited investigationFinal reportCessna 172RG · Pinckneyville, ILAccording to the instructor (CFI), he & the student confirmed the gear was extended & locked as they entered the traffic pattern. Flaps were extended & they contd in the pattern to practice a short field landing technique. Power was reduced after crossing…Sep 20, 1987 · N9543B · Substantial damage