# NTSB investigations, CA: Gear collapsed

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 SEA08LA028](https://openairdocs.org/ntsb/SEA08LA028.md): Cessna 210L · Santa Barbara, CA · Accident · No injuries · Limited investigation · Final report · Nov 16, 2007 · N987M · Substantial damage
  > The left main landing gear's down limit switch plunger being bent and stuck in the closed position, which resulted in the collapse of the landing gear during the landing roll. The reason for the down limit switch plunger being bent could not be determined.
- [NTSB LAX07LA119](https://openairdocs.org/ntsb/LAX07LA119.md): Cessna 320E · Stockton, CA · Accident · No injuries · Limited investigation · Final report · Apr 1, 2007 · N3424Q · Substantial damage
  > The landing gear collapsed during taxi as a result of incorrect rigging of the landing gear by other maintenance personnel that prevented the landing gear downlock from functioning as designed.
- [NTSB LAX06LA166](https://openairdocs.org/ntsb/LAX06LA166.md): McKenzie Lancair IV-P Turbine · San Diego, CA · Accident · No injuries · Limited investigation · Final report · May 8, 2006 · N5M · Substantial damage
  > The collapse of the left main gear for undetermined reasons. A factor was the pilot's inadequate remedial action in response to the left main gear not locked warning light by not attempting to manually extend the gear to ensure it was fully down and locked.
- [NTSB LAX06CA167](https://openairdocs.org/ntsb/LAX06CA167.md): Cessna 310N · Lincoln, CA · Accident · No injuries · Data collection · Final report · Apr 3, 2006 · N5096Q · Substantial damage
  > The collapse of the nose gear due to an out of tolerance nose gear over center adjustment.
- [NTSB LAX05LA251](https://openairdocs.org/ntsb/LAX05LA251.md): Cessna 210A · San Diego, CA · Accident · No injuries · Limited investigation · Final report · Jul 31, 2005 · N9468X · Substantial damage
  > The pilot's failure to ensure that the landing gear was fully extended prior to landing. A contributing factor was the pilot's diverted attention.
- [NTSB LAX05LA206](https://openairdocs.org/ntsb/LAX05LA206.md): Piper PA-24-250 · California City, CA · Accident · No injuries · Limited investigation · Final report · Apr 9, 2005 · N7737P · Substantial damage
  > The failure of the normal landing gear system to extend for undetermined reasons that resulted in a gear collapse during landing.
- [NTSB LAX04LA325](https://openairdocs.org/ntsb/LAX04LA325.md): Piper PA-30 · Auburn, CA · Accident · No injuries · Limited investigation · Final report · Aug 22, 2004 · N8475Y · Substantial damage
  > a collapse of the landing gear for undetermined reasons.
- [NTSB LAX00LA113](https://openairdocs.org/ntsb/LAX00LA113.md): Luscombe 8A · Selma, CA · Accident · No injuries · Limited investigation · Final report · Feb 26, 2000 · N1544K · Substantial damage
  > The failure and separation of the right landing gear axle during taxi from landing for undetermined reasons.
- [NTSB LAX99LA227](https://openairdocs.org/ntsb/LAX99LA227.md): Cessna 120 · Chino, CA · Accident · No injuries · Limited investigation · Final report · Jun 25, 1999 · N2651N · Substantial damage
  > A preexisting fatigue fracture of the right axle.
- [NTSB LAX99LA241](https://openairdocs.org/ntsb/LAX99LA241.md): Rockwell 690B · Monterey, CA · Accident · No injuries · Limited investigation · Final report · Jun 17, 1999 · N480K · Substantial damage
  > The failure of maintenance personnel to properly adjust the drag brace preload during recent landing gear maintenance, which resulted in the overload failure and separation of the hydraulic cylinder attach boss.
- [NTSB LAX98LA216](https://openairdocs.org/ntsb/LAX98LA216.md): Cessna 180H · Ocotillo Wells, CA · Accident · No injuries · Limited investigation · Final report · Jun 29, 1998 · N4803E · Substantial damage
  > Failure of the left main landing gear due to a probable hard landing at an undetermined time.
- [NTSB LAX98LA036](https://openairdocs.org/ntsb/LAX98LA036.md): Cessna 172RG · San Diego, CA · Accident · No injuries · Limited investigation · Final report · Nov 12, 1997 · N9451D · Substantial damage
  > Overload of the main gear actuator piston and the subsequent collapse of the landing gear.
- [NTSB LAX95LA274](https://openairdocs.org/ntsb/LAX95LA274.md): North American AT-6F · Long Beach, CA · Accident · No injuries · Limited investigation · Final report · Jul 28, 1995 · N3173L · Substantial damage
  > the failure of the left main landing gear locking mechanism to fully seat in the 'down' position due to loose attachment bolts.
- [NTSB LAX95LA232](https://openairdocs.org/ntsb/LAX95LA232.md): Cessna 401A · Van Nuys, CA · Accident · No injuries · Limited investigation · Final report · Jul 1, 1995 · N444RJ · Substantial damage
  > the failure of the wing rib web due to undetected cracking in an area of known crack development around the landing gear side brace fitting. The operator's failure to accomplish a Service Letter addressing the problem is a factor in the accident.
- [NTSB LAX94LA362](https://openairdocs.org/ntsb/LAX94LA362.md): Beech B19 · Big Bear City, CA · Accident · No injuries · Limited investigation · Final report · Sep 11, 1994 · N19NH · Substantial damage
  > the failure and separation of the right main landing gear wheel assembly due to a preexisting and undetected crack.
- [NTSB LAX94LA175](https://openairdocs.org/ntsb/LAX94LA175.md): Mooney M-20C · Hyampom, CA · Accident · No injuries · Limited investigation · Final report · Mar 29, 1994 · N4045N · Substantial damage
  > The pilot's failure to follow proper procedures by assuring that the landing gear locking mechanism was properly engaged.
- [NTSB LAX91LA142](https://openairdocs.org/ntsb/LAX91LA142.md): Cessna 421 · El Monte, CA · Accident · No injuries · Limited investigation · Final report · Mar 23, 1991 · N4071L · Substantial damage
  > The pilot retracting the landing gear during the landing roll.
- [NTSB LAX89LA118](https://openairdocs.org/ntsb/LAX89LA118.md): Cessna 310 · Long Beach, CA · Accident · No injuries · Limited investigation · Final report · Mar 10, 1989 · N4899B · Substantial damage
  > The failure of the landing gear strut on the right main gear due to improper maintenance.
- [NTSB LAX85LA375](https://openairdocs.org/ntsb/LAX85LA375.md): Cessna T210 · Bishop, CA · Accident · No injuries · Limited investigation · Final report · Aug 30, 1985 · N2251R · Substantial damage
  > The plt reptd the landing gear collapsed during the landing roll and that the lnd gear down light was illuminated while on final approach. Examination of the aircraft disclosed the lnd gear doors were damaged by the side loads and that both main lnd gears…
- [NTSB LAX85LA289](https://openairdocs.org/ntsb/LAX85LA289.md): Piper PA-24-250 · Lincoln, CA · Accident · No injuries · Limited investigation · Final report · Jun 24, 1985 · N5916P · Destroyed
  > During arrival at dusk, the plt attempted to lower the landing gear, but did not observe a gear dowm light indication. He recycled the gear several times, then utilized the emergency gear extention sys. He stated that when he used the extention sys, he…
- [NTSB LAX85LA167](https://openairdocs.org/ntsb/LAX85LA167.md): Cessna T210N · Santa Barbara, CA · Accident · No injuries · Limited investigation · Final report · Mar 5, 1985 · N6220C · Substantial damage
  > During arrival at Santa Barbara, the plt was unable to extend the ldg gear. Efforts at gear extension using the emergency hand pump failed & the plt landed with the acft's gear partially extended. An exam of the acft revealed an electrical problem of…
- [NTSB LAX84LA430](https://openairdocs.org/ntsb/LAX84LA430.md): Beech A36 · Van Nuys, CA · Accident · No injuries · Limited investigation · Final report · Aug 4, 1984 · N2859W · Substantial damage
  > The acft landed 'gear up' during practice takeoffs and landings. The plt stated that he 'forgot' to extend the landing gear prior to landing. The tower had given him instructions to 'make a short approach.' No mechanical problems were reported.
- [NTSB LAX84LA159](https://openairdocs.org/ntsb/LAX84LA159.md): Beech D55 · Monterey, CA · Accident · No injuries · Limited investigation · Final report · Jan 24, 1984 · N873LB · Substantial damage
  > According to the plt, he extended the gear & flaps before landing, & on final apch, he rechecked that the gear was down & the green gear down & locked light was illuminated. He & both passengers reported that the acft touched down on the wheels, then it…
- [NTSB LAX83LA440](https://openairdocs.org/ntsb/LAX83LA440.md): Beech A36 · Redding, CA · Accident · No injuries · Limited investigation · Final report · Sep 15, 1983 · N67414 · Substantial damage
  > Reportedly, during the landing roll, the acft settled while the gear was in transit. At that time, the flaps were in the down position & were damaged. According to the plt, the gear lights were green. Later, he said that something may have gone wrong with the…
- [NTSB LAX82DA342](https://openairdocs.org/ntsb/LAX82DA342.md): Beech F33A · San Jose, CA · Accident · No injuries · Final report · Sep 13, 1982 · N2306M · Substantial damage
  > The pilot stated that while making a right turn onto a taxiway after a landing rollout, the nose gear and right main landing gear collapsed. The investigation revealed that the pilot was accustomed to flying a different model Beech aircraft in which the flap…

## 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 c."eventStateOrRegion" = 'CA' 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" = 190)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=190&state=CA

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