# NTSB investigations, 1990: Gear not extended

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB BFO91LA011](https://openairdocs.org/ntsb/BFO91LA011.md): Fairchild SA227-AC · Covington, KY · Accident · No injuries · Limited investigation · Final report · Nov 9, 1990 · N445AC · Substantial damage
  > The pilot-in-command's failure to extend the landing gear prior to touchdown. Checkride-induced pressure was a contributing factor, and inadequate supervision by the check pilot was a factor.
- [NTSB ATL91LA002](https://openairdocs.org/ntsb/ATL91LA002.md): Mooney M20E · Greensboro, NC · Accident · No injuries · Limited investigation · Final report · Oct 7, 1990 · N9315V · Substantial damage
  > The failure of the rubber/metal coupling in the landing gear actuator assembly, which resulted in the inability of the pilot to lower and lock the landing gear.
- [NTSB SEA90LA175](https://openairdocs.org/ntsb/SEA90LA175.md): Mooney M-20E · Cheyenne, WY · Accident · No injuries · Limited investigation · Final report · Sep 5, 1990 · N9067V · Substantial damage
  > Pilot's failure to extend the landing gear prior to landing after having been distracted by traffic. A mitigating factor in this accident was the fact that the gear warning horn did not function.
- [NTSB LAX90IA305](https://openairdocs.org/ntsb/LAX90IA305.md): Boeing 747-422 · Los Angeles, CA · Incident · Minor injuries · Incident investigation · Final report · Aug 27, 1990 · N174UA · Minor damage
  > The failure of the manufacturer to ensure that the landing gear selector valves and their associated drum link assemblies were properly installed prior to delivery of the aircraft. A factor in the accident was the lack of information available to the crew…
- [NTSB LAX90IA293](https://openairdocs.org/ntsb/LAX90IA293.md): Boeing 737-322 · Los Angeles, CA · Incident · No injuries · Incident investigation · Final report · Aug 21, 1990 · N305UA · Minor damage
  > Improper maintenance service by a company employee who allowed a foreign object (flashlight) to remain in the landing gear extend/retract linkage during a night servicing before the flight.
- [NTSB NYC90IA178](https://openairdocs.org/ntsb/NYC90IA178.md): De Havilland DHC-7-102 · New York, NY · Incident · No injuries · Incident investigation · Final report · Jul 29, 1990 · N175RA · Minor damage
  > The flight crew's failure to folllow the landing gear emergency checklist. Factors which contributed to the incident were: a jammed nose landing gear due to the installation of a bogus part by unknown person(s) and a dirty gear viewing window.
- [NTSB DEN90LA148](https://openairdocs.org/ntsb/DEN90LA148.md): Piper PA24-250 · Broomfield, CO · Accident · No injuries · Limited investigation · Final report · Jun 29, 1990 · N6391P · Substantial damage
  > The failure of the pilot to extend the landing gear for landing. Contributing factors were the pilot diverting his attention from the task at hand and failure to use a checklist.
- [NTSB SEA90LA096](https://openairdocs.org/ntsb/SEA90LA096.md): Cessna 310B · Albany, OR · Accident · No injuries · Limited investigation · Final report · Jun 5, 1990 · N6647B · Substantial damage
  > The pilot's failure to extend the landing gear before landing, when he became distracted by a change in his normal routine.
- [NTSB BFO90FA053](https://openairdocs.org/ntsb/BFO90FA053.md): Beech 36 · Gaithersburg, MD · Accident · 2 fatal · Field investigation · Final report · Jun 2, 1990 · N2003A · Destroyed
  > Failure of the pilot to extend the landing gear, which resulted in a wheels up landing; his improper decision to attempt a go around (aborted landing) after the airplane contacted the runway; and his failure to attain or maintain adequate airspeed while…
- [NTSB CHI90LA141](https://openairdocs.org/ntsb/CHI90LA141.md): Piper PA-31-350 · Plainfield, IL · Accident · No injuries · Limited investigation · Final report · May 30, 1990 · N62869 · Substantial damage
  > The pilot's failure to insure that the landing gear was extended and locked prior to touchdown.
- [NTSB MKC90LA114](https://openairdocs.org/ntsb/MKC90LA114.md): Cessna 182RG · Salina, KS · Accident · No injuries · Limited investigation · Final report · May 24, 1990 · N7311S · Substantial damage
  > Gear down and locked not identified, and emergency procedures not performed by the pilot in command.
- [NTSB MIA90IA128](https://openairdocs.org/ntsb/MIA90IA128.md): Piper PA-31-350 · Tampa, FL · Incident · No injuries · Incident investigation · Final report · May 23, 1990 · N62910 · Minor damage
  > The failure of the pilot to follow procedures outlined in the checklist, resulting in the airplane landing with landing gear retracted.
- [NTSB CHI90LA114](https://openairdocs.org/ntsb/CHI90LA114.md): Rockwell AC-690 · Sheboygan, WI · Accident · No injuries · Limited investigation · Final report · Apr 18, 1990 · N57175 · Substantial damage
  > Failure of the pilot to complete the landing checklist and lower the landing gear. Contributing to this accident is habit pattern interference and distraction.
- [NTSB CHI90LA080](https://openairdocs.org/ntsb/CHI90LA080.md): Beech V35 · West Chicago, IL · Accident · No injuries · Limited investigation · Final report · Feb 13, 1990 · N9582Q · Substantial damage
  > Failure of the pilot to extend the gear, which resulted in an inadvertent wheels-up landing.
- [NTSB ATL90LA054](https://openairdocs.org/ntsb/ATL90LA054.md): Swearingen SA 226TC · Morrisville, NC · Accident · No injuries · Limited investigation · Final report · Jan 24, 1990 · N396AV · Substantial damage
  > Improper installation of the landing gear door actuator fork assembly by company maintenance personnel.
- [NTSB ATL90LA053](https://openairdocs.org/ntsb/ATL90LA053.md): Mitsubishi MU2B-20 · Nashville, TN · Accident · No injuries · Limited investigation · Final report · Jan 23, 1990 · N40RP · Substantial damage
  > Inadequate maintenance adjustment of the landing gear system which resulted in the jamming of the left gear door.

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```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") = 1990
  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
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=196&year=1990

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