# NTSB investigations: Airframe/component/system failure/malfunction

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 21 of 79 · 3,929 cases

## Cases, newest first

- [NTSB FTW00LA095](https://openairdocs.org/ntsb/FTW00LA095.md): Beech 65-B80 · Midland, TX · Accident · No injuries · Limited investigation · Final report · Mar 10, 2000 · N8071R · Substantial damage
  > The separation of the right main landing gear tire tread which resulted in damage to the right main landing gear mounting structure.
- [NTSB ATL00LA034](https://openairdocs.org/ntsb/ATL00LA034.md): Hughes 369D · Dallas, NC · Accident · No injuries · Limited investigation · Final report · Mar 6, 2000 · N303BT · Substantial damage
  > The pilot's improper use of flight controls during an emergency landing. Factors were an encounter with a loss of tail rotor effectiveness (LTE) during an out-of-ground effect hover, the pilot's inadequate weather evaluation, and his failure to follow proper…
- [NTSB ATL00IA035](https://openairdocs.org/ntsb/ATL00IA035.md): Cessna CE-560 · Key Largo, FL · Incident · No injuries · Incident investigation · Final report · Mar 5, 2000 · N314QS · Minor damage
  > The malfunction of the nose gear locking mechanism for undetermined reason.
- [NTSB ANC00LA033](https://openairdocs.org/ntsb/ANC00LA033.md): Cessna 208B · Holy Cross, AK · Accident · No injuries · Limited investigation · Final report · Mar 4, 2000 · N407GV · Substantial damage
  > An in-flight separation of a main landing gear tire mud flap, and subsequent impact with the horizontal stabilizer.
- [NTSB LAX00LA112](https://openairdocs.org/ntsb/LAX00LA112.md): Piper PA-32R-301T · Coalinga, CA · Accident · No injuries · Limited investigation · Final report · Mar 2, 2000 · N8170S · Substantial damage
  > The failure of the landing gear for undetermined reasons to go into the locked position after the pilot conducted a manual and emergency gear extension. A factor in the accident was the undetermined failure of the electrical system.
- [NTSB NYC00LA085](https://openairdocs.org/ntsb/NYC00LA085.md): Boeing 747-236 · Providence, RI · Accident · Serious injuries · Limited investigation · Final report · Feb 28, 2000 · GBDXL · No damage
  > Maintenance personnel's failure to reconnect the pitot connections to the elevator feel computer which resulted in an elevator control surface deflection which was outside of the normal autopilot elevator authority. The uncommanded autopilot input to the…
- [NTSB LAX00IA106](https://openairdocs.org/ntsb/LAX00IA106.md): Embraer 120 · Fresno, CA · Incident · No injuries · Incident investigation · Final report · Feb 21, 2000 · N566SW · No damage
  > Moisture contamination of the elevator trim actuator units resulting in their failure to operate at below freezing temperatures
- [NTSB DCA00MA026](https://openairdocs.org/ntsb/DCA00MA026.md): Douglas DC-8-71F · Rancho Cordova, CA · Accident · 3 fatal · Class 1 · Major · Final report · Feb 17, 2000 · N8079U · Destroyed
  > A loss of pitch control resulting from the disconnection of the right elevator control tab. The disconnection was caused by the failure to properly secure and inspect the attachment bolt.
- [NTSB LAX00LA103](https://openairdocs.org/ntsb/LAX00LA103.md): Hughes 369HS · Pacific Ocean (Pacific Ocean) · Accident · No injuries · Limited investigation · Final report · Feb 14, 2000 · N717ST · Destroyed
  > An unknown mechanical malfunction that resulted in a precautionary landing at sea and the subsequent sinking of the helicopter by an ocean swell.
- [NTSB LAX00LA253](https://openairdocs.org/ntsb/LAX00LA253.md): Cessna 310L · Flagstaff, AZ · Accident · No injuries · Limited investigation · Final report · Feb 7, 2000 · N867MF · Substantial damage
  > the fracture across the eyelet of the nose gear retraction rod, which prevented the extension of the nose gear.
- [NTSB DEN00LA048](https://openairdocs.org/ntsb/DEN00LA048.md): Beech M35 · Albuquerque, NM · Accident · Serious injuries · Limited investigation · Final report · Feb 5, 2000 · N639V · Destroyed
  > The pilot inadvertently allowing the airplane to stall. Factors were the missing alternator belt and the resultant total electrical system failure, and the pilot's attention being diverted.
- [NTSB DCA00MA023](https://openairdocs.org/ntsb/DCA00MA023.md): Douglas MD-83 · Port Hueneme, CA · Accident · 88 fatal · Class 1 · Major · Final report · Feb 1, 2000 · N963AS · Destroyed
  > A loss of airplane pitch control resulting from the in-flight failure of the horizontal stabilizer trim system jackscrew assembly's acme nut threads. The thread failure was caused by excessive wear resulting from Alaska Airlines' insufficient lubrication of…
- [NTSB CHI00IA087](https://openairdocs.org/ntsb/CHI00IA087.md): McDonnell Douglas DC9-32 · Milwaukee, WI · Incident · No injuries · Incident investigation · Final report · Jan 31, 2000 · N203ME · Minor damage
  > the chafing of the internal water heater wire. A factor was the missing ground strap.
- [NTSB DEN00LA045](https://openairdocs.org/ntsb/DEN00LA045.md): Bell 212 · Mt Pleasant, UT · Accident · Serious injuries · Limited investigation · Final report · Jan 29, 2000 · N212HQ · Substantial damage
  > Failure of the main rotor mast due to fatigue that resulted from inadequate quality assurance during the manufacturing process.
- [NTSB MIA00LA067](https://openairdocs.org/ntsb/MIA00LA067.md): Swearingen SX300 · Jekyll Island, GA · Accident · No injuries · Limited investigation · Final report · Jan 9, 2000 · N54SX · Substantial damage
  > failure of the left main landing gear attachment during the landing/flare touchdown for undetermined reasons, resulting in the loss of directional control and the airplane exiting the runway and colliding with a runway light.
- [NTSB LAX00LA071](https://openairdocs.org/ntsb/LAX00LA071.md): Rotorway Exec 90 · Chandler, AZ · Accident · No injuries · Limited investigation · Final report · Jan 4, 2000 · N89678 · Substantial damage
  > the fatigue fracture and separation of the secondary drive shaft, which resulted from the manufacturer's inadequate quality control process.
- [NTSB FTW00LA055](https://openairdocs.org/ntsb/FTW00LA055.md): Cessna 172L · New Orleans, LA · Accident · No injuries · Limited investigation · Final report · Dec 28, 1999 · N172GT · Substantial damage
  > The pilot's inadvertent starting of the engine. Factors were the pilot's failure to set the mixture control to the off position, and the intermittent short in the starter switch.
- [NTSB CHI00FA050](https://openairdocs.org/ntsb/CHI00FA050.md): Israel Aircraft Industries 1124A · Milwaukee, WI · Accident · No injuries · Field investigation · Final report · Dec 26, 1999 · N422BC · Substantial damage
  > The failure of the first stage pressure reducer in the oxygen regulator assembly.
- [NTSB DEN00IA032](https://openairdocs.org/ntsb/DEN00IA032.md): Boeing 737-347 · Salt Lake City, UT · Incident · No injuries · Incident investigation · Final report · Dec 24, 1999 · N305WA · Minor damage
  > Improper assembly of the wheel during build up in the operator's maintenance facilities.
- [NTSB SEA00LA032](https://openairdocs.org/ntsb/SEA00LA032.md): Cessna 140 · Helena, MT · Accident · No injuries · Limited investigation · Final report · Dec 15, 1999 · N2739N · Substantial damage
  > Separation of the left main landing gear. Factors include inadequate preflight inspection by the pilot, and inadequate inspection at the time of annual inspection by maintenance personnel.
- [NTSB ATL00LA015](https://openairdocs.org/ntsb/ATL00LA015.md): Maule M7-235C · Iuka, MS · Accident · No injuries · Limited investigation · Final report · Dec 15, 1999 · N4AN · Substantial damage
  > The separation of the nicopress fitting allowing a release of the rudder cable resulting in a loss of control during landing roll. A factor was the manufacturer's use of an improperly calibrated crimping tool.
- [NTSB NYC00MA048](https://openairdocs.org/ntsb/NYC00MA048.md): Israel Aircraft Industries 1124A · Gouldsboro, PA · Accident · 3 fatal · Major investigation · Final report · Dec 12, 1999 · N50PL · Destroyed
  > The improper assembly of the horizontal stabilizer trim actuator unit by maintenance personnel.
- [NTSB CHI00LA043](https://openairdocs.org/ntsb/CHI00LA043.md): McCarty Wittman W-8 Tailwind · Jamestown, ND · Accident · 2 fatal · Limited investigation · Final report · Dec 12, 1999 · N654 · Destroyed
  > the wing spar failure due to its inadequate construction by the owner/builder.
- [NTSB LAX00LA049](https://openairdocs.org/ntsb/LAX00LA049.md): Corbin/King Osprey 2 · Chula Vista, CA · Accident · 1 fatal · Limited investigation · Final report · Dec 6, 1999 · N192DC · Destroyed
  > The pilot exceeded the design stress limits of the airplane resulting in wing overload and separation.
- [NTSB DEN00IA023](https://openairdocs.org/ntsb/DEN00IA023.md): Boeing 767-232 · Salt Lake City, UT · Incident · No injuries · Incident investigation · Final report · Dec 6, 1999 · N111DN · Minor damage
  > Total failure of the main landing gear retract actuator due to stress corrosion caused by the use of a faulty sealant by company maintenance personnel that allowed moisture to enter the joint. A factor was the use of an improper fillet seal.
- [NTSB DEN00LA024](https://openairdocs.org/ntsb/DEN00LA024.md): Cessna 305A · Akron, CO · Accident · No injuries · Limited investigation · Final report · Dec 3, 1999 · N5245G · Substantial damage
  > The failure of the four bolts which attach the right main landing gear assembly to the landing gear strut.
- [NTSB LAX00LA045](https://openairdocs.org/ntsb/LAX00LA045.md): Lewis Stewart S-51 · Aguila, AZ · Accident · Serious injuries · Limited investigation · Final report · Nov 28, 1999 · N151L · Substantial damage
  > The jamming of a main landing gear in its wheel well for undetermined reasons.
- [NTSB SEA00LA025](https://openairdocs.org/ntsb/SEA00LA025.md): Dassault DA-20 · Boise, ID · Accident · No injuries · Limited investigation · Final report · Nov 27, 1999 · N216SA · Substantial damage
  > Failure of the forward gear door lock pin. An inoperative landing gear door and inadequate maintenance inspection of the aircraft were factors.
- [NTSB MIA00FA030](https://openairdocs.org/ntsb/MIA00FA030.md): Bell 212 · Philadelphia, MS · Accident · 2 fatal · Field investigation · Final report · Nov 27, 1999 · N8144M · Destroyed
  > The failure of the pilot and company maintenance personnel during preflight and periodic inspections to identify the signs of fretting and looseness in the "red" main rotor blade pitch change horn to main rotor blade grip attachment, resulting in the…
- [NTSB LAX00TA051](https://openairdocs.org/ntsb/LAX00TA051.md): de Havilland DHC-7 · Kwajalein, Marshall Islands · Accident · No injuries · Final report · Nov 27, 1999 · N273EP · Substantial damage
  > The failure of the flight crew to properly execute the emergency landing gear extension procedure in response to a landing gear unsafe cockpit indication.
- [NTSB CHI00LA038](https://openairdocs.org/ntsb/CHI00LA038.md): Cessna 310Q · Moline, IL · Accident · No injuries · Limited investigation · Final report · Nov 26, 1999 · N7762Q · Substantial damage
  > the landing gear locking mechanism was not properly locked. Factors relating to this accident were the improper rigging of the gear and the runway marker.
- [NTSB NYC00IA036](https://openairdocs.org/ntsb/NYC00IA036.md): Boeing 767-200 · Jamaica, NY · Incident · No injuries · Incident investigation · Final report · Nov 21, 1999 · N610UA · No damage
  > Total failure of the stabilizer control system for undetermined reasons.
- [NTSB DEN00LA020](https://openairdocs.org/ntsb/DEN00LA020.md): Cessna 210D · Sheridan, WY · Accident · No injuries · Limited investigation · Final report · Nov 21, 1999 · N3928Y · Substantial damage
  > The partial failure of the engine driven hydraulic pump.
- [NTSB SEA00LA018](https://openairdocs.org/ntsb/SEA00LA018.md): Piper PA18 · Malheur City, OR · Accident · Minor injuries · Limited investigation · Final report · Nov 13, 1999 · N82553 · Destroyed
  > The pilot's excessive descent rate during an attempted precautionary landing. Factors include the pilot's intentional operation of his aircraft with a known electrical system deficiency, a malfunction of the electrical system while in flight, the pilot's…
- [NTSB SEA00IA019](https://openairdocs.org/ntsb/SEA00IA019.md): Boeing 737-400 · Portland, OR · Incident · No injuries · Incident investigation · Final report · Nov 11, 1999 · N772AS · Minor damage
  > Arcing in the electrical system wiring for undetermined reasons.
- [NTSB SEA00TA013](https://openairdocs.org/ntsb/SEA00TA013.md): Hiller UH-12E · Stites, ID · Accident · Serious injuries · Final report · Nov 2, 1999 · N5388V · Substantial damage
  > Inadequate inspection of the control rotor cuff by a company mechanic and subsequent fatigue fracture of the cuff, resulting in an inflight separation of the control rotor blade. Factors contributing to the accident were: inadequate quality control during…
- [NTSB CHI00IA018](https://openairdocs.org/ntsb/CHI00IA018.md): Boeing 757-222 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Oct 29, 1999 · N575UA · No damage
  > the in-flight vibration of the airplane's elevator due to excessive freeplay in the elevator control system. Factors included the corrosion of the elevator PCA reaction link bearings and the elevator hinge bearings, excessive axial and radial wear of the…
- [NTSB IAD00LA002](https://openairdocs.org/ntsb/IAD00LA002.md): Loral GZ-22 · Mogadore, OH · Accident · Minor injuries · Limited investigation · Final report · Oct 28, 1999 · N4A · Substantial damage
  > The failure of the flight control system manufacturer to meet design (hardness) specifications that resulted in stripped splines.
- [NTSB NYC00LA021](https://openairdocs.org/ntsb/NYC00LA021.md): Eurocopter AS-350-BA · Westbury, NY · Accident · No injuries · Limited investigation · Final report · Oct 27, 1999 · N350SL · Substantial damage
  > the failure of the operator to ensure the pilot was adequately trained to conduct all inspections required by the flight manual, which resulted in the pilot's inadequate preflight and subsequent failure of the tail rotor pitch change rod. Factors were the…
- [NTSB DEN00LA013](https://openairdocs.org/ntsb/DEN00LA013.md): Bellanca 8KCAB · Grand Junction, CO · Accident · No injuries · Limited investigation · Final report · Oct 27, 1999 · N8707V · Substantial damage
  > A failure of the left main landing gear attachment (u-bolt) due to fatigue.
- [NTSB LAX00GA025](https://openairdocs.org/ntsb/LAX00GA025.md): McDonnell Douglas 500N · San Jose, CA · Accident · 2 fatal · Final report · Oct 25, 1999 · N904PD · Destroyed
  > The pilot's in-flight loss of control due to the failure and separation of the forward thruster control cable telescoping sleeve ball swivel fitting, which resulted in a stuck thruster and the entry into an uncontrollable yaw/spin. Also causal was the…
- [NTSB DCA00MA005](https://openairdocs.org/ntsb/DCA00MA005.md): Learjet 35 · Aberdeen, SD · Accident · 6 fatal · Class 1 · Major · Final report · Oct 25, 1999 · N47BA · Destroyed
  > Incapacitation of the flight crewmembers as a result of their failure to receive supplemental oxygen following a loss of cabin pressurization, for undetermined reasons.
- [NTSB MIA00LA013](https://openairdocs.org/ntsb/MIA00LA013.md): British Aerospace HS 125-700A · Fayetteville, NC · Accident · No injuries · Limited investigation · Final report · Oct 19, 1999 · N34GG · Substantial damage
  > The overstress failure of the lugs of the cylinder head of the left main landing gear jack for undetermined reasons. Also, inability of the flight crew to extend the left main landing gear.
- [NTSB LAX00LA019](https://openairdocs.org/ntsb/LAX00LA019.md): Cessna TR182 · Fresno, CA · Accident · No injuries · Limited investigation · Final report · Oct 19, 1999 · N756LE · Substantial damage
  > Inadequate maintenance inspection mandated by the FAA, and the inadequate design of the exhaust heater core/muffler and deflectors that failed to divert hot exhaust gasses away from the battery and cabin heat valve.
- [NTSB FTW00LA012](https://openairdocs.org/ntsb/FTW00LA012.md): Air Tractor AT-301 · Olton, TX · Accident · Minor injuries · Limited investigation · Final report · Oct 14, 1999 · N23930 · Substantial damage
  > The inflight separation of the propeller blade due to damage from a wire strike. A factor was the lack of suitable terrain for the forced landing.
- [NTSB CHI00IA009](https://openairdocs.org/ntsb/CHI00IA009.md): McDonnell Douglas DC-9-51 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Oct 14, 1999 · N766NC · No damage
  > The landing gear's wheel separation due to the improper installation of the wheel by company maintenance personnel using incomplete maintenance steps, and the maintenance steps not listed in the manufacturer's manual. Factors were the airport perimeter wall…
- [NTSB FTW00LA030](https://openairdocs.org/ntsb/FTW00LA030.md): Air Tractor AT-802A · Lamesa, TX · Accident · No injuries · Limited investigation · Final report · Oct 11, 1999 · N6044A · Substantial damage
  > The separation of the rudder control cable at the aft fairlead, as a result of wear.
- [NTSB FTW00LA010](https://openairdocs.org/ntsb/FTW00LA010.md): Piper PA-18-150 · Granite, OK · Accident · Serious injuries · Limited investigation · Final report · Oct 11, 1999 · N4473A · Substantial damage
  > Corrosion failure of the fuselage support tubing below the right wing forward attach fitting due to inadequate maintenance.
- [NTSB NYC00LA005](https://openairdocs.org/ntsb/NYC00LA005.md): McDonnell Douglas MD-11F · Newark, NJ · Accident · No injuries · Limited investigation · Final report · Oct 5, 1999 · N606FE · Substantial damage
  > A divergent, longitudinal oscillation of undetermined origin on the center landing gear, which caused a failure of the center landing gear lower drag brace during landing roll.
- [NTSB FTW99LA272](https://openairdocs.org/ntsb/FTW99LA272.md): Cessna 150F · Poteau, OK · Accident · 1 fatal · Limited investigation · Final report · Oct 1, 1999 · N8092S · Substantial damage
  > The instructor pilot's inadequate in-flight decision making, which resulted in the continued flight with a disabled generator and subsequent total failure of the electrical system. Factors were the installation of the inadequate generator fuse by unknown…

Next page: https://openairdocs.org/ntsb.md?occurrence=130&page=22

## 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" = 130)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=130&page=21

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.
