# NTSB investigations: Main 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.

Page 4 of 9 · 406 cases

## Cases, newest first

- [NTSB CHI92LA091](https://openairdocs.org/ntsb/CHI92LA091.md): Luscombe 8E · Farrar, MO · Accident · Minor injuries · Limited investigation · Final report · Feb 15, 1992 · N1778K · Substantial damage
  > Premature liftoff and poor planning by the pilot. Factors related to the accident were the tailwind and misjudged compensation for it along with the rough uneven terrain.
- [NTSB FTW92LA051](https://openairdocs.org/ntsb/FTW92LA051.md): Cessna 180K · Orange, TX · Accident · No injuries · Limited investigation · Final report · Dec 30, 1991 · N20489 · Substantial damage
  > The ruptured left main gear tire for undetermined reasons.
- [NTSB BFO92LA012](https://openairdocs.org/ntsb/BFO92LA012.md): John W Upton SA-300 · Leon, WV · Accident · No injuries · Limited investigation · Final report · Dec 8, 1991 · N85JU · Substantial damage
  > The defective welding between the axle and the wheel assembly causing the right main gear to collapse.
- [NTSB FTW92LA027](https://openairdocs.org/ntsb/FTW92LA027.md): Cessna R182 · Santa Fe, NM · Accident · No injuries · Limited investigation · Final report · Nov 27, 1991 · N2645C · Substantial damage
  > The right main gear collapsed for undetermined reasons, which resulted in the pilot's loss of directional control during the landing roll.
- [NTSB LAX92LA009](https://openairdocs.org/ntsb/LAX92LA009.md): Cessna 210 · Riverside, CA · Accident · No injuries · Limited investigation · Final report · Oct 6, 1991 · N9517T · Substantial damage
  > The failure of a hydraulic gear return line, which caused the aircraft's main landing gear to collapse during landing touchdown.
- [NTSB NYC91LA248](https://openairdocs.org/ntsb/NYC91LA248.md): Fairchild SW3 · Atlantic City, NJ · Accident · No injuries · Limited investigation · Final report · Sep 29, 1991 · N159MC · Substantial damage
  > A failure of the down lock roller bearings of the right main landing gear, as the result of an improper modification.
- [NTSB SEA91LA248](https://openairdocs.org/ntsb/SEA91LA248.md): Piper PA-28R-200 · Lewiston, ID · Accident · No injuries · Limited investigation · Final report · Sep 22, 1991 · N2116T · Substantial damage
  > The pilot's failure to maintain directional control.
- [NTSB MIA91LA218](https://openairdocs.org/ntsb/MIA91LA218.md): Cessna A188B · Yazoo City, MS · Accident · No injuries · Limited investigation · Final report · Sep 14, 1991 · N8999G · Substantial damage
  > Separation of the right main landing gear during take off due to failure of the bolts which secure the gear to the airframe. Contributing to the accident was the failure of the pilot to abort the takeoff.
- [NTSB CHI91LA227](https://openairdocs.org/ntsb/CHI91LA227.md): Aero Commander 500B · Hutchinson, KS · Accident · No injuries · Limited investigation · Final report · Jul 29, 1991 · N120EL · Substantial damage
  > The landing gear handle was placed in the gear up postion prematurely resulting in a gear retraction during takeoff. Factors related to the accident were proper procedures were not followed by the pilot.
- [NTSB FTW91DPG17](https://openairdocs.org/ntsb/FTW91DPG17.md): Grumman G-164 · Goodwin, AR · Accident · No injuries · Final report · Jul 24, 1991 · N634U · Substantial damage
  > The failure of the right main landing gear.
- [NTSB CHI91LA157](https://openairdocs.org/ntsb/CHI91LA157.md): Piper PA-34-220T · Eau Claire, WI · Accident · No injuries · Limited investigation · Final report · May 14, 1991 · N8356B · Substantial damage
  > The inadequate finishing procedures used by the manufacturer and the failure to comply with the manufacturer's bulletin.
- [NTSB ANC91LA056](https://openairdocs.org/ntsb/ANC91LA056.md): Cessna C-170B · Manley Hot Sprg, AK · Accident · No injuries · Limited investigation · Final report · May 4, 1991 · N2744D · Substantial damage
  > The pilot's selecting unsuitable terrain for landing. Contributing to the accident was the rough landing area.
- [NTSB CHI91LA133](https://openairdocs.org/ntsb/CHI91LA133.md): Cessna TR182 · Jackson, MI · Accident · No injuries · Limited investigation · Final report · Apr 15, 1991 · N4359R · Substantial damage
  > Failure to the pilot to assure gear extension. Factors related to the accident were the electrical failure due to a seized alternator and diverted attention by the pilot.
- [NTSB CHI91LA076](https://openairdocs.org/ntsb/CHI91LA076.md): Cessna 320 · Middleton, WI · Accident · No injuries · Limited investigation · Final report · Jan 24, 1991 · N4112T · Substantial damage
  > The main landing gear collapsed during landing rollout due to extreme cold temperatures. A factor related to the accident was a snowbank adjacent to the runway.
- [NTSB MIA91IA032](https://openairdocs.org/ntsb/MIA91IA032.md): ATR ATR-42-300 · St. Thomas · Incident · No injuries · Incident investigation · Final report · Nov 26, 1990 · N971NA · Minor damage
  > The failure of the left main landing gear side brace lower arm due to fatigue resulting from corrosion formation, which resulted from improper design to prevent corrosion formation.
- [NTSB MIA91LA003](https://openairdocs.org/ntsb/MIA91LA003.md): Beech C-90 · Tampa, FL · Accident · No injuries · Limited investigation · Final report · Oct 3, 1990 · N7128J · Substantial damage
  > The lack of lubrication by maintenance personnel of the nose landing gear actuator.
- [NTSB MIA90LA192](https://openairdocs.org/ntsb/MIA90LA192.md): Cessna 402B · St. Thomas · Accident · No injuries · Limited investigation · Final report · Sep 24, 1990 · N4440K · Substantial damage
  > Separation of the left main landing gear torque tube bracket assembly due to sheared rivets from a previous hard side load landing which was not reported.
- [NTSB ANC90LA180](https://openairdocs.org/ntsb/ANC90LA180.md): Cessna 185 · Upper Colleen, AK · Accident · No injuries · Limited investigation · Final report · Sep 18, 1990 · N70087 · Substantial damage
  > The pilot-in-command's failure to select suitable terrain for landing. Contributing to the accident was the rough and uneven terrain.
- [NTSB CHI90LA238](https://openairdocs.org/ntsb/CHI90LA238.md): Mooney M20B · Winfield, KS · Accident · No injuries · Limited investigation · Final report · Aug 18, 1990 · N74745 · Substantial damage
  > Non-compliance of an airworthiness directive by maintenance personnel.
- [NTSB BFO90LA069](https://openairdocs.org/ntsb/BFO90LA069.md): Cessna 170B · Frederick, MD · Accident · No injuries · Limited investigation · Final report · Aug 16, 1990 · N8239A · Substantial damage
  > Fatigue failure of the left main gear wheel axle.
- [NTSB NYC90LA170](https://openairdocs.org/ntsb/NYC90LA170.md): Cessna 340A · Prospect, PA · Accident · No injuries · Limited investigation · Final report · Jul 22, 1990 · N555KB · Substantial damage
  > An on ground collision with terrain after the right main landing gear side brace failed due to shear from the soft, wet, rough runway, allowing the right main landing gear to collapse.
- [NTSB LAX90LA242](https://openairdocs.org/ntsb/LAX90LA242.md): Cessna 340 · Salinas, CA · Accident · No injuries · Limited investigation · Final report · Jul 1, 1990 · N5411M · Substantial damage
  > The failure of maintenance personnel to reinstall the landing gear retract/extension linkage and the failure of inspection personnel to detect the improper installation.
- [NTSB MIA90LA141](https://openairdocs.org/ntsb/MIA90LA141.md): Beech D95A · Mayaguez, PR · Accident · No injuries · Limited investigation · Final report · Jun 13, 1990 · N744GP · Substantial damage
  > The pilot failed to property align the aircraft with the runway. A factor in the accident was the strong, gusty crosswind.
- [NTSB DEN90LA118](https://openairdocs.org/ntsb/DEN90LA118.md): Cessna 310 · Ogden, UT · Accident · No injuries · Limited investigation · Final report · May 28, 1990 · N8148M · Substantial damage
  > The failure of the main gear locking mechanism.
- [NTSB ANC90LA073](https://openairdocs.org/ntsb/ANC90LA073.md): Piper PA-18 · Talkeetna, AK · Accident · No injuries · Limited investigation · Final report · May 21, 1990 · N2515A · Substantial damage
  > Collapse of the left main landing gear due to an overload failure induced by previous damage which occurred during an improper level-off by the pilot.
- [NTSB LAX90LA150](https://openairdocs.org/ntsb/LAX90LA150.md): Piper PA46 · Paso Robles, CA · Accident · No injuries · Limited investigation · Final report · Apr 17, 1990 · N4387S · Substantial damage
  > Inadequate altitude for proper landing gear extension; not ensuring the landing gear was down and locked; complacency of the certified flight instructor.
- [NTSB LAX90LA120](https://openairdocs.org/ntsb/LAX90LA120.md): Cessna 414 · Ramona, CA · Accident · No injuries · Limited investigation · Final report · Mar 16, 1990 · N711AG · Destroyed
  > Right main gear scissors assemlby becoming disconnected during landing roll, allowing the right run landing gear to collapse; scissor assembly washers not being replaced as recommended in Cessna aircraft service bulletin ME83-37..
- [NTSB CHI90LA085](https://openairdocs.org/ntsb/CHI90LA085.md): Piper PA-28-161 · Pontiac, MI · Accident · No injuries · Limited investigation · Final report · Feb 18, 1990 · N8394D · Substantial damage
  > Overload failure of the left main landing gear attach bolts for an undetermined reason.
- [NTSB ANC90LA023](https://openairdocs.org/ntsb/ANC90LA023.md): Champion 7ECA · Tanana, AK · Accident · No injuries · Limited investigation · Final report · Dec 29, 1989 · N7615S · Substantial damage
  > Failure of the right main gear axle bolt.
- [NTSB LAX90DVG02](https://openairdocs.org/ntsb/LAX90DVG02.md): Schweizer G-164B · Knights Landing, CA · Accident · No injuries · Final report · Nov 18, 1989 · N6977K · Substantial damage
  > The failure of the right main Landing gear due to a sheared bolt that attached the spring leg to the gear.
- [NTSB LAX90DUJ01](https://openairdocs.org/ntsb/LAX90DUJ01.md): Roger Nelson Aeronica/T · Sierra Vista, AZ · Accident · No injuries · Final report · Oct 8, 1989 · N101E · Substantial damage
  > The pilot's inaccurate placement of the aircraft wheels into depressions in a platform mounted on a moving pickup truck during an airshow performance.
- [NTSB MIA90LA004](https://openairdocs.org/ntsb/MIA90LA004.md): Maule M-4-220C · Orlando, FL · Accident · No injuries · Limited investigation · Final report · Oct 6, 1989 · N40340 · Substantial damage
  > Failure of the left main landing gear.
- [NTSB ANC90LA003](https://openairdocs.org/ntsb/ANC90LA003.md): Piper PA-22 · Dillingham, AK · Accident · No injuries · Limited investigation · Final report · Oct 5, 1989 · N5715D · Substantial damage
  > Failure of the right main gear.
- [NTSB MIA89LA239](https://openairdocs.org/ntsb/MIA89LA239.md): Lake LA-4-200 · Orlando, FL · Accident · No injuries · Limited investigation · Final report · Sep 3, 1989 · N1072L · Substantial damage
  > Retraction of the right main landing gear for an unknown reason.
- [NTSB SEA89FA155](https://openairdocs.org/ntsb/SEA89FA155.md): Cessna 402B · Seattle, WA · Accident · No injuries · Field investigation · Final report · Aug 31, 1989 · CGRKR · Substantial damage
  > The landing gear down lock mechanism failure.
- [NTSB ANC89LA142](https://openairdocs.org/ntsb/ANC89LA142.md): Piper PA-18 · Red Lake, AK · Accident · No injuries · Limited investigation · Final report · Aug 13, 1989 · N83622 · Substantial damage
  > The pilot's selection of unsuitable terrain. The rough/uneven terrain was a contributing factor.
- [NTSB MIA89LA216](https://openairdocs.org/ntsb/MIA89LA216.md): Cessna 195B · Hollywood, FL · Accident · No injuries · Limited investigation · Final report · Aug 6, 1989 · N841DP · Substantial damage
  > The failure of the left main landing gear spring due to low cycle fatigue, resulting in the loss of control of the ground.
- [NTSB DEN89LA172](https://openairdocs.org/ntsb/DEN89LA172.md): Cessna T188C · Fort Benton, MT · Accident · No injuries · Limited investigation · Final report · Jul 7, 1989 · N2802J · Substantial damage
  > Overload failure of the left main landing gear attaching bolts for an unknown reason.
- [NTSB DEN89LA147](https://openairdocs.org/ntsb/DEN89LA147.md): Beech A24R · Evanston, WY · Accident · No injuries · Limited investigation · Final report · Jun 25, 1989 · N24607 · Substantial damage
  > The pilot became disoriented and delayed in taking remedial action, which resulted on a critically low fuel level. A factor related to the accident was: rough/uneven terrain in the emergency landing area.
- [NTSB DEN89LA138](https://openairdocs.org/ntsb/DEN89LA138.md): Piper PA-34-200T · Las Cruces, NM · Accident · No injuries · Limited investigation · Final report · Jun 16, 1989 · N36345 · Substantial damage
  > Failure of the left main landing gear trunnion. A contributing factor was: inadequate inspection procedure in Piper service bulletin #787A.
- [NTSB ANC89LA093](https://openairdocs.org/ntsb/ANC89LA093.md): Piper PA-32-300 · Eek, AK · Accident · No injuries · Limited investigation · Final report · Jun 16, 1989 · N32062 · Substantial damage
  > Failure of the center torque link bolt on the right main gear.
- [NTSB CHI89LA106](https://openairdocs.org/ntsb/CHI89LA106.md): Piper PA-38-112 · Elyria, OH · Accident · No injuries · Limited investigation · Final report · Jun 9, 1989 · N2529D · Substantial damage
  > Failure (shearing) of the right main gear attaching bolts. A contributing factor was: failure of the owner/operator to comply with service bulletin #673B.
- [NTSB DEN89FA123](https://openairdocs.org/ntsb/DEN89FA123.md): Mcdonnell Douglas MD-80 · Denver, CO · Accident · Minor injuries · Field investigation · Final report · May 29, 1989 · N806NY · Substantial damage
  > A right main landing gear vibration of unknown origin, which resulted in a failure of the right main landing gear torque link and side brace.
- [NTSB DEN89IA124](https://openairdocs.org/ntsb/DEN89IA124.md): Boeing 727-247 · Denver, CO · Incident · No injuries · Incident investigation · Final report · May 24, 1989 · N296WA · Minor damage
  > Failure of the left main landing gear forward trunnion bearing support fitting due to a crack initiating at the forward edge of the bore and propagating by intergranular stress corrosion into the bore surface that resulted in an eventual ductile fracture.
- [NTSB LAX89LA201](https://openairdocs.org/ntsb/LAX89LA201.md): Piper PA-24-250 · San Diego, CA · Accident · No injuries · Limited investigation · Final report · May 20, 1989 · N6545P · Substantial damage
  > The collapse of the right main landing gear due to a bent rod end which prevented the landing gear drag link to lock over center.
- [NTSB SEA89LA089](https://openairdocs.org/ntsb/SEA89LA089.md): Champion 7GCB · Copalis Beach, WA · Accident · No injuries · Limited investigation · Final report · May 15, 1989 · N8978R · Substantial damage
  > The pilot's failure to perform the necessary preflight planning and preparation which resulted in the selection of unsuitable terrain for landing. Contributing to the accident was the soft sand bar.
- [NTSB MIA89LA147](https://openairdocs.org/ntsb/MIA89LA147.md): Cessna 310P · Fort Myers, FL · Accident · No injuries · Limited investigation · Final report · May 6, 1989 · N5769M · Substantial damage
  > Collapse of the left main landing gear due to overload failure of the trunnion and bellcrank assembly.
- [NTSB MIA89IA145](https://openairdocs.org/ntsb/MIA89IA145.md): Piper PA-34-200T · Miami, FL · Incident · No injuries · Incident investigation · Final report · May 6, 1989 · N859SC · Minor damage
  > Fatigue failure of the left main landing gear trunnion. A contributing factor was: inadequate inspection procedure in Piper service bulletin #787A.
- [NTSB CHI89IA084](https://openairdocs.org/ntsb/CHI89IA084.md): Fokker F-27 MK500 · Moline, IL · Incident · No injuries · Incident investigation · Final report · May 4, 1989 · N511AW · Minor damage
  > Material failure of the landing gear retraction and extension assembly. Inadequate maintenance and troubleshooting procedures in company directives were factors in this incident.
- [NTSB NYC89LA127](https://openairdocs.org/ntsb/NYC89LA127.md): Cessna 150G · Hudson, NY · Accident · No injuries · Limited investigation · Final report · Apr 30, 1989 · N4766X · Substantial damage
  > Fatigue failure of the right main strut.

Next page: https://openairdocs.org/ntsb.md?occurrence=191&page=5

## 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."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 191)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=191&page=4

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