# 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 50 of 79 · 3,929 cases

## Cases, newest first

- [NTSB ANC89LA126](https://openairdocs.org/ntsb/ANC89LA126.md): Cessna 140 · Nyac Mine, AK · Accident · No injuries · Limited investigation · Final report · Jul 21, 1989 · N7G · Substantial damage
  > Failure of the left rudder pedal bar assembly and failure of the pilot to maintain control of the aircraft. Improper maintenance and the pilot's lack of total experience were considered to be contributing factors.
- [NTSB CHI89DEP07](https://openairdocs.org/ntsb/CHI89DEP07.md): Hiller UH-12E · Blackriverfalls, WI · Accident · Minor injuries · Final report · Jul 20, 1989 · N48313 · Destroyed
  > Pilot-in-command's failure to jettison the external load followed by his misjudgement of distance to avoid collision with the external load.
- [NTSB DCA89MA063](https://openairdocs.org/ntsb/DCA89MA063.md): Mcdonnell Douglas DC-10-10 · Sioux City, IA · Accident · 111 fatal · Class 1 · Major · Final report · Jul 19, 1989 · N1819U · Destroyed
  > The inadequate consideration given to human factors limitations in the inspection and quality control procedures used by united airlines' engine overhaul facility which resulted in the failure to detect a fatigue crack originating from a previously…
- [NTSB LAX89LA245](https://openairdocs.org/ntsb/LAX89LA245.md): Burkhart Grob G-102 · Maricopa, AZ · Accident · No injuries · Limited investigation · Final report · Jul 15, 1989 · N925G · Substantial damage
  > The pilot's inability to maintain airspeed, resulting in a hard landing. Also causal to the accident was the opening of the canopy for undetermined reasons.
- [NTSB CHI89LA136](https://openairdocs.org/ntsb/CHI89LA136.md): Cessna 335 · Pontiac, MI · Accident · No injuries · Limited investigation · Final report · Jul 14, 1989 · N2706T · Substantial damage
  > Failure of the right main landing gear extension/retraction component resulting from unacceptable loads incurred due to improper adjustment.
- [NTSB FTW89LA135](https://openairdocs.org/ntsb/FTW89LA135.md): Cessna 421 · Okmulgee, OK · Accident · Serious injuries · Limited investigation · Final report · Jul 13, 1989 · N699PC · Substantial damage
  > Failure of the nose gear extension assembly and the pilot's improper precautionary landing procedures that included securing the engines prior to a point where a safe landing was assured.
- [NTSB CHI89MA132](https://openairdocs.org/ntsb/CHI89MA132.md): Mcdonnell Douglas DC8-63F · Vandalia, OH · Accident · No injuries · Major investigation · Final report · Jul 13, 1989 · N950R · Substantial damage
  > Failure of the left main landing gear, bogie trim cylinder, and malfunction of the emergency airbrake control valve.
- [NTSB FTW89FA134](https://openairdocs.org/ntsb/FTW89FA134.md): Cessna 150L · Fort Worth, TX · Accident · Serious injuries · Field investigation · Final report · Jul 11, 1989 · N17250 · Substantial damage
  > A loss of control of the airplane due to the pilot's inability to raise the flaps which resulted in a stall. The flap failure and subsequent full flap takeoff were the result of the operator's improper maintenance of the airplane and the operator's use of a…
- [NTSB SEA89LA130](https://openairdocs.org/ntsb/SEA89LA130.md): Cushing C2 · John Day, OR · Accident · Serious injuries · Limited investigation · Final report · Jul 9, 1989 · N129C · Substantial damage
  > The pilot improperly changed the design of the airplane by elongating holes at the wing attachment. The change was not inspected by a qualified individual. As a result of the change, the wing separated at the spar.
- [NTSB LAX89LA233](https://openairdocs.org/ntsb/LAX89LA233.md): Cessna P210N · Los Angeles, CA · Accident · Serious injuries · Limited investigation · Final report · Jul 9, 1989 · N609AC · Destroyed
  > An undertorqued oil line fitting, due to its improper installation by maintenance personnel, which resulted in a loose oil line fitting, an oil line leak, oil exhaustion, and subsequent failure of the engine.
- [NTSB FTW89DPJ08](https://openairdocs.org/ntsb/FTW89DPJ08.md): Grumman G-164 · Guymon, OK · Accident · Serious injuries · Final report · Jul 8, 1989 · N788Y · Substantial damage
  > Failure of the upper right engine mount (firewall attach bolt) due to fatigue, and failure of the lower right mounting bolt for an unknown reason, which allowed overload failure of the two remaining mounting bolts and separation of the engine.
- [NTSB ATL89DKJ06](https://openairdocs.org/ntsb/ATL89DKJ06.md): Piper PA-25-235 · Goodway, AL · Accident · Serious injuries · Final report · Jul 8, 1989 · N6941Z · Destroyed
  > The in-flight separation of the left wing which failed because of a corrosion induced fatigue fracture.
- [NTSB DEN89FA155](https://openairdocs.org/ntsb/DEN89FA155.md): Piper PA-16 · Minot, ND · Accident · Serious injuries · Field investigation · Final report · Jul 5, 1989 · N5295H · Destroyed
  > Failure of the airframe tubing (longeron) at the lower forward door frame due to corrosion. A contributing factor was failure of maintenance personnel to comply with service bulletin #819.
- [NTSB MKC89LA150](https://openairdocs.org/ntsb/MKC89LA150.md): Aero Commander S2R · Jonesboro, AR · Accident · No injuries · Limited investigation · Final report · Jul 3, 1989 · N8976Q · Destroyed
  > The pilot's encounter with unsuitable terrain during a forced landing made necessary by the separation of three feet of one of the propeller blades.
- [NTSB NYC89LA139](https://openairdocs.org/ntsb/NYC89LA139.md): Robinson R-22A · Southampton, MA · Accident · No injuries · Limited investigation · Final report · Jun 30, 1989 · N8462S · Substantial damage
  > Improper maintenance which resulted in a section of the vertical stabilizer failing inflight.
- [NTSB SEA89FA122](https://openairdocs.org/ntsb/SEA89FA122.md): Douglas DC-3C · Petersburg, AK · Accident · No injuries · Field investigation · Final report · Jun 26, 1989 · N8042X · Substantial damage
  > The pilot's improper decision to ditch the aircraft when it could have been flown back to the airport using the right seat controls. Contributing factor(s) was: the failure & separation of a portion of the right aileron fabric, and the pilot's excessive force…
- [NTSB BFO89IA047](https://openairdocs.org/ntsb/BFO89IA047.md): British Aerospace 3101 · Baltimore, MD · Incident · No injuries · Incident investigation · Final report · Jun 26, 1989 · N849JS · Minor damage
  > Failure of maintenance personnel to properly torque the power connection at the air conditioning system fuse.
- [NTSB FTW89DPJ07](https://openairdocs.org/ntsb/FTW89DPJ07.md): Beech T-34 · Haskell, OK · Accident · 2 fatal · Final report · Jun 24, 1989 · N34CJ · Destroyed
  > Failure of the pilot to maintain adequate airspeed, which resulted in an inadvertent stall. Factors related to the accident were: a leak in the pitot system, failure of the pilot to obtain adequate maintenance/inspection of the pitot system, and his lack of…
- [NTSB DEN89LA144](https://openairdocs.org/ntsb/DEN89LA144.md): Beauchesne/Wells Glasair TD · Moriarity, NM · Accident · No injuries · Limited investigation · Final report · Jun 21, 1989 · N544BM · Substantial damage
  > Improper installation of the propeller which resulted in severe vibration and failure of the propeller mounting bolts, & the separation of the propeller from the aircraft. Rough/uneven desert terrain contributed to the accident.
- [NTSB ANC89IA099](https://openairdocs.org/ntsb/ANC89IA099.md): De Havilland DHC-3 · Palmer, AK · Incident · No injuries · Incident investigation · Final report · Jun 20, 1989 · N41755 · No damage
  > Inadequate lubrication which resulted in the failure of the horizontal stabilizer's trim actuator.
- [NTSB CHI89FA114](https://openairdocs.org/ntsb/CHI89FA114.md): Mcculloch J-2 · Oxford, OH · Accident · 2 fatal · Field investigation · Final report · Jun 17, 1989 · N4354G · Destroyed
  > The failure of the pilot operator to replace the main rotor thrust bearing. The expired service life of the main rotor thrust bearing is a factor in the accident.
- [NTSB LAX89LA223](https://openairdocs.org/ntsb/LAX89LA223.md): Cessna T210N · Herlong, CA · Accident · Serious injuries · Limited investigation · Final report · Jun 16, 1989 · N4857C · Substantial damage
  > Fuel starvation, after the pilot diverted his attention to an electrical problem, and his failure to reposition the fuel selector switch, either before the engine lost power or during emergency procedures. Factors related to the accident were: the tripped…
- [NTSB DEN89LA163](https://openairdocs.org/ntsb/DEN89LA163.md): Cessna A188B · Fort Benton, MT · Accident · No injuries · Limited investigation · Final report · Jun 15, 1989 · N4971Q · Substantial damage
  > Failure of the tailwheel assembly attaching bolts.
- [NTSB SEA89FA111](https://openairdocs.org/ntsb/SEA89FA111.md): Oregon Helicopters UH-1L · Baring, WA · Accident · Serious injuries · Field investigation · Final report · Jun 14, 1989 · N157LC · Destroyed
  > Fatigue failure of the tail rotor 42 degree gear box due to pilot induced overstress. Navy data and FAA type certificate limitations were not adhered to.
- [NTSB FTW89LA111](https://openairdocs.org/ntsb/FTW89LA111.md): Piper PA-22 · Austin, TX · Accident · Minor injuries · Limited investigation · Final report · Jun 10, 1989 · N655A · Substantial damage
  > The failure of the aircraft brake system. Factors include high tail wind.
- [NTSB ANC89LA106](https://openairdocs.org/ntsb/ANC89LA106.md): Helio H-295 · King Salmon, AK · Accident · No injuries · Limited investigation · Final report · Jun 6, 1989 · N204CW · Substantial damage
  > An undetermined problem related to the engine, propeller, and/or failed tailwheel assembly.
- [NTSB SEA89FA099](https://openairdocs.org/ntsb/SEA89FA099.md): Cushing 4 · Mansfield, WA · Accident · 2 fatal · Field investigation · Final report · Jun 4, 1989 · N5321U · Destroyed
  > Failure of the left wing main spar due to overload for undetermined reasons.
- [NTSB MIA89LA165](https://openairdocs.org/ntsb/MIA89LA165.md): Bell 47G-3B-1 · Keystone Hgts., FL · Accident · Minor injuries · Limited investigation · Final report · May 30, 1989 · N53SP · Substantial damage
  > The tail rotor drive system became disconnected due to a bent tail rotor drive shaft. The trees contributed to the helicopter damage.
- [NTSB SEA89LA096](https://openairdocs.org/ntsb/SEA89LA096.md): Schweizer G-164 · Hermiston, OR · Accident · No injuries · Limited investigation · Final report · May 26, 1989 · N8768H · Substantial damage
  > Failure and separation of the left main landing wheel.
- [NTSB CHI89DEP04](https://openairdocs.org/ntsb/CHI89DEP04.md): Hiller UH-12E · Waterford, WI · Accident · No injuries · Final report · May 22, 1989 · N3829 · Substantial damage
  > The pilot's inability to maintain control during an autorotational landing attempt following the failure of the main rotor drive train torsional coupling.
- [NTSB LAX89LA198](https://openairdocs.org/ntsb/LAX89LA198.md): Cessna 140 · Placerville, CA · Accident · No injuries · Limited investigation · Final report · May 19, 1989 · N76675 · Substantial damage
  > Total failure of the landing gear tire. A major factor was the unsuitability of the terrain at the side of the runway.
- [NTSB CHI89FA092](https://openairdocs.org/ntsb/CHI89FA092.md): Swearingen SA226TC · Marion, IL · Accident · No injuries · Field investigation · Final report · May 19, 1989 · N232AM · Substantial damage
  > Failure of the pilot to maintain directional control of the aircraft. Contributing to the accident was lack of crew coordination and inappropriate remedial action on the part of the aircrew, and improper maintenance modification by the operator.
- [NTSB MIA89LA148](https://openairdocs.org/ntsb/MIA89LA148.md): Piper PA-32R-300 · Gainesville, FL · Accident · Minor injuries · Limited investigation · Final report · May 16, 1989 · N43797 · Substantial damage
  > Pilot's inability to properly flare due to a high sink rate as a result of insufficient airspeed which resulted in a hard landing short of and off of the runway.
- [NTSB ATL89DLT03](https://openairdocs.org/ntsb/ATL89DLT03.md): Bell 47 · Shelbyville, TN · Accident · No injuries · Final report · May 12, 1989 · N908B · Substantial damage
  > Failure in the rotor drive system for unknown reasons. Contributing to the accident was the pilot's inability to perform an autorotation.
- [NTSB SEA89LA083](https://openairdocs.org/ntsb/SEA89LA083.md): Davis Starship Alpha · Star, ID · Accident · Serious injuries · Limited investigation · Final report · May 9, 1989 · N5531N · Substantial damage
  > Failure of the propeller drive belt (stripped teeth). Contributing factors were: strong/gusty winds and the hilly terrain.
- [NTSB MKC89FA104](https://openairdocs.org/ntsb/MKC89FA104.md): Callair A-9 · Hamilton, MO · Accident · 1 fatal · Field investigation · Final report · May 7, 1989 · N3581G · Destroyed
  > The pilots failure to maintain control and prevent the airplane from descending while in a turn.
- [NTSB ANC89FA069](https://openairdocs.org/ntsb/ANC89FA069.md): Bell 412 · Girdwood, AK · Accident · Minor injuries · Field investigation · Final report · May 6, 1989 · N524EH · Destroyed
  > A main rotor flight control bolt (part number 20-057-6-38D) came out of its rod end bearing while in flight due to the bolt being improperly torqued during maintenance.
- [NTSB CHI89IA083](https://openairdocs.org/ntsb/CHI89IA083.md): Mcdonnell Douglas DC-9-82 · Minneapolis, MN · Incident · No injuries · Incident investigation · Final report · May 2, 1989 · N434AA · Minor damage
  > Failure of the hydraulic power transfer unit shut-off (ptu s/o) valve due to failed (fatigued) valve body attach screws.
- [NTSB LAX89LA173](https://openairdocs.org/ntsb/LAX89LA173.md): North American P-51D · Travis Afb, CA · Accident · No injuries · Limited investigation · Final report · Apr 26, 1989 · N151D · Substantial damage
  > The left main landing gear failing to fully extend for undetermined reasons resulting in its collapsing during landing.
- [NTSB LAX89DVM02](https://openairdocs.org/ntsb/LAX89DVM02.md): Hiller UH-12E · Salinas, CA · Accident · Minor injuries · Final report · Apr 26, 1989 · N169HA · Substantial damage
  > The separation of the torsion coupling in the main rotor drive system.
- [NTSB ATL89LA133](https://openairdocs.org/ntsb/ATL89LA133.md): Beech A36 · Macon, GA · Accident · No injuries · Limited investigation · Final report · Apr 22, 1989 · N6613A · Substantial damage
  > The pilot delayed remedial action when the imminent loss of electrical power was observed. Additionally, the pilot's failure to execute the appropriate emergency procedure and manually lower the landing gear, resulted in its collapse upon landing.…
- [NTSB ATL89FA130](https://openairdocs.org/ntsb/ATL89FA130.md): Bell UH-1E · Aiken, SC · Accident · Serious injuries · Field investigation · Final report · Apr 17, 1989 · N118HS · Substantial damage
  > Improper installation of a tail rotor pitch change crosshead retention bolt by the company mechanic, which resulted in loosening of the bolt and eventual failure of the tail rotor assembly/blade and subsequent loss of control. Trees at the crash site…
- [NTSB ANC89IA059](https://openairdocs.org/ntsb/ANC89IA059.md): De Havilland DHC-6-100 · Barrow, AK · Incident · No injuries · Incident investigation · Final report · Apr 14, 1989 · N100AP · No damage
  > The propagation of a fatigue crack from multiple origins due to manufacturing defects in the elevator bellcrank mounting quadrant.
- [NTSB CHI89FA071](https://openairdocs.org/ntsb/CHI89FA071.md): Sikorsky S-58T · Milwaukee, WI · Accident · Serious injuries · Field investigation · Final report · Apr 11, 1989 · N4247U · Substantial damage
  > Disconnect of the tailrotor drive shaft coupling.
- [NTSB SEA89LA066](https://openairdocs.org/ntsb/SEA89LA066.md): Thiessen RV-4 · Independence, OR · Accident · No injuries · Limited investigation · Final report · Apr 7, 1989 · N504JT · Substantial damage
  > Failure of the propeller. A related factor was the obstruction (transmission line) in the emergency landing area.
- [NTSB NYC89LA113](https://openairdocs.org/ntsb/NYC89LA113.md): Smith, Ted Aerostar Aerostar 600 · Utica, NY · Accident · No injuries · Limited investigation · Final report · Apr 6, 1989 · N90437 · Substantial damage
  > A fire in the cockpit from an unknown source.
- [NTSB MIA89IA118](https://openairdocs.org/ntsb/MIA89IA118.md): Cessna P206B · West Palm Beach, FL · Incident · No injuries · Incident investigation · Final report · Mar 29, 1989 · N4740F · No damage
  > Failure of the throttle control arm resulting in the loss of engine power. The failure was caused by poor maintenance.
- [NTSB DEN89LA095](https://openairdocs.org/ntsb/DEN89LA095.md): Beech F33A · Lamar, CO · Accident · No injuries · Limited investigation · Final report · Mar 27, 1989 · N3042Z · Substantial damage
  > Failure of an alternator bearing which resulted in total loss of electrical power after the battery became discharged, and failure of the pilot to insure the gear was fully extended during a precautionary landing. The pilot's lack of familiarity with the gear…
- [NTSB NYC89LA103](https://openairdocs.org/ntsb/NYC89LA103.md): Beech A100 · Johnstown, PA · Accident · No injuries · Limited investigation · Final report · Mar 22, 1989 · N23605 · Substantial damage
  > Failure of the down lock plate, which allowed the landing gear to collapse.
- [NTSB DCA89MA035](https://openairdocs.org/ntsb/DCA89MA035.md): McDonnell Douglas DC-9-33F · Saginaw, TX · Accident · 2 fatal · Class 1 · Major · Final report · Mar 18, 1989 · N931F · Destroyed
  > The loss of control of the airplane for undetermined reasons following the inflight opening of the improperly latched cargo door. Contributing to the accident were: inadequate procedures used by evergreen airlines and approved by the FAA for preflight…

Next page: https://openairdocs.org/ntsb.md?occurrence=130&page=51

## 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=50

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