# NTSB investigations: AiResearch TPE331 series

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 3 of 5 · 223 cases

## Cases, newest first

- [NTSB DEN04FA035](https://openairdocs.org/ntsb/DEN04FA035.md): Rockwell 690A · Cortez, CO · Accident · 1 fatal · Field investigation · Final report · Jan 3, 2004 · N700SR · Destroyed
  > the pilot's inadequate planned approach and his failure to maintain airspeed which resulted in a stall. Contributing factors were low altitude flight maneuvering in an attempt to lose excessive altitude and realign the airplane for landing, and his failure to…
- [NTSB ATL04FA049](https://openairdocs.org/ntsb/ATL04FA049.md): Cessna 441 · Vestavia Hills, AL · Accident · 2 fatal · Field investigation · Final report · Dec 10, 2003 · N441W · Destroyed
  > The pilot's failure to maintain adequate airspeed during climb in icing conditions, which resulted in an inadvertent stall / spin of the airplane and subsequent uncontrolled descent and collision with terrain. A factor was the accumulation of airframe ice.
- [NTSB DEN04FA027](https://openairdocs.org/ntsb/DEN04FA027.md): Swearingen SA226-TC · Denver, CO · Accident · No injuries · Field investigation · Final report · Dec 3, 2003 · N60U · 2 aircraft · Substantial damage
  > the failure of the pilot of the taxiing aircraft to maintain clearance and adequate visual lookout for the stopped aircraft.
- [NTSB SEA04FA023](https://openairdocs.org/ntsb/SEA04FA023.md): Fairchild Swearingen SA227-AT · Spokane, WA · Accident · 1 fatal · Field investigation · Final report · Nov 29, 2003 · N439AF · Destroyed
  > The pilot-in-command's failure to maintain proper glidepath alignment during an ILS approach in poor weather resulting in collision with trees and terrain. Contributing factors were the unreliable status of the primary (NAV 1) ILS receiver (leaving the pilot…
- [NTSB DEN04LA023](https://openairdocs.org/ntsb/DEN04LA023.md): Fairchild Swearingen SA226TC · Grand Junction, CO · Accident · No injuries · Limited investigation · Final report · Nov 18, 2003 · N332BA · Substantial damage
  > the operator's improper maintenance and servicing of the airplane's nose landing gear assembly, resulting in the collapse of the nose landing gear during the landing roll. Contributing factors include the nose section of the airplane's subsequent contact with…
- [NTSB DEN04LA020](https://openairdocs.org/ntsb/DEN04LA020.md): Fairchild Swearingen SA227BC · Rawlins, WY · Accident · No injuries · Limited investigation · Final report · Nov 1, 2003 · N787KL · Substantial damage
  > the pilot's failure to maintain directional control during the landing roll. Contributing factors include the pilot's improper in-flight planning/decision, the icy, snow covered runway and the snow bank.
- [NTSB FTW03WA227](https://openairdocs.org/ntsb/FTW03WA227.md): Aero Commander 690 · Soto La Marina, Mexico · Accident · 1 fatal · Foreign investigation · Sep 16, 2003 · N302WB · Destroyed
- [NTSB CHI03LA278](https://openairdocs.org/ntsb/CHI03LA278.md): Ayres S2R-G6 · Breckenridge, MI · Accident · 1 fatal · Limited investigation · Final report · Aug 19, 2003 · N23EG · Destroyed
  > The pilot's failure to maintain clearance from the powerlines during the aerial application pass rendering the airplane uncontrollable. The powerlines were a factor.
- [NTSB ANC03LA062](https://openairdocs.org/ntsb/ANC03LA062.md): Swearingen SA-226T · Goodnews, AK · Accident · Minor injuries · Limited investigation · Final report · Jun 28, 2003 · N512FS · Substantial damage
  > The flight crew's inadequate evaluation of the weather conditions, which resulted in their inadequate compensation for the wind conditions, and subsequent undershoot. A contributing factor in the accident was a downdraft.
- [NTSB FTW03LA159](https://openairdocs.org/ntsb/FTW03LA159.md): Ayres S2R-G6 · Palestine, AR · Accident · No injuries · Limited investigation · Final report · May 25, 2003 · N6136Z · Substantial damage
  > The shearing of the torsion shaft which resulted in a loss of engine power. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB DEN03LA075](https://openairdocs.org/ntsb/DEN03LA075.md): Mitsubishi MU-2B-60 · Salt Lake City, UT · Accident · No injuries · Limited investigation · Final report · Apr 18, 2003 · N157CA · Substantial damage
  > the pilot improperly aligning the airplane on the runway for takeoff. Contributing factors were the reduced visibility due to rain, and the dark night.
- [NTSB DEN03LA076](https://openairdocs.org/ntsb/DEN03LA076.md): Swearingen SA226TC · Denver, CO · Accident · No injuries · Limited investigation · Final report · Apr 16, 2003 · N229AM · Substantial damage
  > The failure of the landing gear system and the flight crew's failure to ascertain that the landing gear was down and locked. A contributing factor was the inadequate maintenance inspections performed by maintenance personnel.
- [NTSB FTW02LA258](https://openairdocs.org/ntsb/FTW02LA258.md): Air Tractor AT-302 · Lacompte, LA · Accident · Minor injuries · Limited investigation · Final report · Sep 13, 2002 · N8843S · Substantial damage
  > The loss of engine power for undetermined reason. A contributing factor was the lack of suitable terrain available to the pilot for the forced landing, and low altitude maneuvering.
- [NTSB LAX02TA267](https://openairdocs.org/ntsb/LAX02TA267.md): Sikorsky S-55T · Lytle Creek, CA · Accident · No injuries · Final report · Aug 30, 2002 · N747A · Substantial damage
  > Failure of the hydraulic system due to contamination in the hydraulic fluid, which resulted in an in-flight loss of control.
- [NTSB FTW03IA073](https://openairdocs.org/ntsb/FTW03IA073.md): Mitsubishi MU-2B-60 · Memphis, TN · Incident · No injuries · Incident investigation · Final report · Aug 20, 2002 · N610CA · No damage
  > the loss of right engine power as a result of a fatigue failure of the propeller shaft coupling.
- [NTSB IAD02FA052](https://openairdocs.org/ntsb/IAD02FA052.md): Ayres S-2R · Swanton, MD · Accident · 1 fatal · Field investigation · Final report · May 19, 2002 · N88MQ · Destroyed
  > The pilot's failure to maintain visual separation from a set of known, yet unmarked power lines.
- [NTSB NYC02LA047](https://openairdocs.org/ntsb/NYC02LA047.md): Swearingen SA-227-AT · Covington, KY · Accident · Minor injuries · Limited investigation · Final report · Jan 8, 2002 · N556UP · Substantial damage
  > the tug driver's inadequate visual lookout which resulted in his failure to see the airplane in time to prevent the collision.
- [NTSB ATL02FA031](https://openairdocs.org/ntsb/ATL02FA031.md): Cessna 441 · Rio Grande, PR · Accident · 5 fatal · Field investigation · Final report · Jan 5, 2002 · N441AW · Destroyed
  > The pilot continued visual flight flight into instrument flight conditions resulting in an in-flight collision with terrain. Low clouds were a factor.
- [NTSB CHI01LA302](https://openairdocs.org/ntsb/CHI01LA302.md): Swearingen SA226-T · West Chicago, IL · Accident · No injuries · Limited investigation · Final report · Aug 28, 2001 · N104BR · Substantial damage
  > the checklist not followed and the directional control not maintained by the pilot. A contributing factor was the left propeller’s start locks being engaged.
- [NTSB LAX01LA268](https://openairdocs.org/ntsb/LAX01LA268.md): Weatherly 620B · Winnemucca, NV · Accident · No injuries · Limited investigation · Final report · Aug 4, 2001 · N90191 · Substantial damage
  > the pilot's failure to maintain clearance with the wires while he was maneuvering for an aerial application run.
- [NTSB DEN01FA113](https://openairdocs.org/ntsb/DEN01FA113.md): Mitsubishi MU-2B-20 · Cerrillos, NM · Accident · 2 fatal · Field investigation · Final report · Jun 10, 2001 · N187AF · Destroyed
  > the pilot's loss of aircraft control inflight for reasons undetermined. Contributing factors were the pilot's inadequate transition/upgrade training and his total lack of experience in aircraft make/model.
- [NTSB FTW01FA111](https://openairdocs.org/ntsb/FTW01FA111.md): Mitsubishi MU-2B-40 · The Woodlands, TX · Accident · 2 fatal · Field investigation · Final report · May 1, 2001 · N16CG · Destroyed
  > The pilot's failure to maintain airplane control following a loss of right engine power, which resulted in impact with terrain in an uncontrolled descent. A contributing factor was the loss of right engine power as a result of the fatigue failure of the…
- [NTSB DEN01LA052](https://openairdocs.org/ntsb/DEN01LA052.md): Cessna 441 · Englewood, CO · Accident · No injuries · Limited investigation · Final report · Feb 13, 2001 · N24PT · Substantial damage
  > the pilot's failure to verify that the landing gear was down and locked before landing, which resulted in a wheels-up landing.
- [NTSB IAD01LA026](https://openairdocs.org/ntsb/IAD01LA026.md): Ayres S2R · Crewe, VA · Accident · No injuries · Limited investigation · Final report · Jan 14, 2001 · N222GK · Substantial damage
  > the loss of engine power due to the pilot's inadequate preflight planning and exhaustion of his fuel supply.
- [NTSB IAD01FA021](https://openairdocs.org/ntsb/IAD01FA021.md): Jetstream 4101 · Charlottesville, VA · Accident · Minor injuries · Field investigation · Final report · Dec 30, 2000 · N323UE · Substantial damage
  > The captain's improper application of power after responding to a beta warning light during landing rollout, which resulted in an excessive rollout speed and an inability to stop the airplane before it reached the end of the runway.
- [NTSB CHI01FA032](https://openairdocs.org/ntsb/CHI01FA032.md): Swearingen SA226TC · Fort Wayne, IN · Accident · 1 fatal · Field investigation · Final report · Nov 9, 2000 · N731AC · Destroyed
  > The indicated failure of the right hand AC bus during takeoff with low ceiling. The factors were the low ceiling, night, and the execssive workload the pilot experienced on takeoff with an electrical failure without a second in command.
- [NTSB NYC00IA159](https://openairdocs.org/ntsb/NYC00IA159.md): British Aerospace BAE Jetstream 3201 · Lexington, KY · Incident · No injuries · Incident investigation · Final report · Jun 9, 2000 · N914AE · Minor damage
  > A misalignment between the bull gear and high speed pinion gearshaft, which resulted in fatigue and a subsequent failure of the bull gear.
- [NTSB FTW00LA118](https://openairdocs.org/ntsb/FTW00LA118.md): Ayres S2R-G6 · Oak Grove, LA · Accident · No injuries · Limited investigation · Final report · Apr 6, 2000 · N3004V · Substantial damage
  > The failure of a spur gear from the torque sensor gear assembly resulting in a loss of engine power. A factor was the muddy terrain encountered during the forced landing.
- [NTSB ANC00LA042](https://openairdocs.org/ntsb/ANC00LA042.md): Short Brothers SC7 · Delta Junction, AK · Accident · No injuries · Limited investigation · Final report · Apr 5, 2000 · N549WB · Substantial damage
  > The pilot's inadequate compensation for wind conditions during landing. Factors associated with the accident were an unfavorable wind, a crosswind, and an inadvertent swerve.
- [NTSB MIA00LA123](https://openairdocs.org/ntsb/MIA00LA123.md): Ayres S2R-G10 · Leesburg, GA · Accident · Minor injuries · Limited investigation · Final report · Mar 29, 2000 · N4089Q · Substantial damage
  > The failure of the pilot to maintain clearance during a spray pass resulting in the in-flight collision with the raised rows of the field.
- [NTSB MIA00LA004](https://openairdocs.org/ntsb/MIA00LA004.md): Fairchild SA227-AC · Opa Locka, FL · Accident · No injuries · Limited investigation · Final report · Oct 12, 1999 · N438MA · Substantial damage
  > The improper flare by the co-pilot, and the failure of the captain to take remedial action by applying power to arrest the observed high rate of descent resulting in a hard landing. A finding in the accident was the inadequate maintenance adjustment of the…
- [NTSB LAX99LA281](https://openairdocs.org/ntsb/LAX99LA281.md): Ayres S2R-G10 · Stanfield, AZ · Accident · Minor injuries · Limited investigation · Final report · Aug 24, 1999 · N20523 · Substantial damage
  > The pilot's delay in aborting the takeoff after noting sluggish acceleration during the takeoff roll, which resulted in a runway overrun.
- [NTSB CHI99LA175](https://openairdocs.org/ntsb/CHI99LA175.md): Ayres S2R-G10 · North Platte, NE · Accident · No injuries · Limited investigation · Final report · Jun 6, 1999 · N3024U · Substantial damage
  > The pilot failed to maintain directional control during takeoff.
- [NTSB IAD99LA045](https://openairdocs.org/ntsb/IAD99LA045.md): Gulfstream American 690C · Hot Springs, VA · Accident · No injuries · Limited investigation · Final report · May 24, 1999 · N840V · Substantial damage
  > A hard landing due to the pilot's inadequate compensation for the wind conditions.
- [NTSB ATL99LA054](https://openairdocs.org/ntsb/ATL99LA054.md): Mitsubishi MU-2B-20 · Knoxville, TN · Accident · No injuries · Limited investigation · Final report · Mar 12, 1999 · N176BJ · Substantial damage
  > A loss of engine power for undetermined reasons. Contributing to the accident was the failure of the landing gear to extend for undetermined reasons.
- [NTSB DEN99LA047](https://openairdocs.org/ntsb/DEN99LA047.md): Swearingen SA226TC · Denver, CO · Accident · No injuries · Limited investigation · Final report · Mar 5, 1999 · N151SA · 2 aircraft · Substantial damage
  > The pilot of N328BA's failure to maintain visual lookout while taxiing, causing the subsequent collision with N151SA.
- [NTSB NYC99IA056](https://openairdocs.org/ntsb/NYC99IA056.md): Piper PA42-1000 · Lexington, KY · Incident · No injuries · Incident investigation · Final report · Feb 5, 1999 · N37KW · Minor damage
  > Improper assembly of the engine gearcase by the manufacturer, which resulted in an uncontained failure of the 1st bull gear.
- [NTSB MIA99LA062](https://openairdocs.org/ntsb/MIA99LA062.md): Beech C-45G · Charlotte Amali · Accident · No injuries · Limited investigation · Final report · Dec 11, 1998 · N555NJ · Substantial damage
  > The inadequate flare by the pilot-in-command resulting in a hard landing on the nose landing gear causing it to collapse.
- [NTSB LAX98IA218](https://openairdocs.org/ntsb/LAX98IA218.md): Aero Commander 681B · Reno, NV · Incident · No injuries · Incident investigation · Final report · Jun 29, 1998 · N520CS · Minor damage
  > The failure and separation of the first and third stage turbine disks for undetermined reasons.
- [NTSB MIA98LA168](https://openairdocs.org/ntsb/MIA98LA168.md): Gulfstream American 690C · Jacksonville, FL · Accident · No injuries · Limited investigation · Final report · May 26, 1998 · N840V · Substantial damage
  > the left main landing gear failed to extend due to a jammed link assembly.
- [NTSB SEA98FA023](https://openairdocs.org/ntsb/SEA98FA023.md): Aero Commander 690A · Yakima, WA · Accident · 2 fatal · Field investigation · Final report · Dec 13, 1997 · N72VF · Destroyed
  > A loss of aircraft control for undetermined reasons.
- [NTSB FTW97LA170](https://openairdocs.org/ntsb/FTW97LA170.md): Ayres S2R-G6 · El Dorado, AR · Accident · No injuries · Limited investigation · Final report · Apr 29, 1997 · N31575 · Substantial damage
  > The pilot misjudging his altitude above the airport, resulting in not attaining the proper touchdown point. A factor was the separation of teeth from the aft gear of the spur gear assembly, which resulted in the interruption of fuel.
- [NTSB SEA96LA176](https://openairdocs.org/ntsb/SEA96LA176.md): Grumman-Schweizer G-164A · Belgrade, MT · Accident · No injuries · Limited investigation · Final report · Aug 3, 1996 · N9853 · Substantial damage
  > loss of engine power for undetermined reason(s). A factor relating to the accident was: a ditch in the field where the forced landing was executed.
- [NTSB FTW96IA248](https://openairdocs.org/ntsb/FTW96IA248.md): Fairchild SA227-DC · Enid, OK · Incident · No injuries · Incident investigation · Final report · Jun 11, 1996 · N850LS · No damage
  > failure of the accessory drive bearing, causing the accessory drive gear teeth to shear and disengage the fuel pump accessory drive shaft, resulting in a disabled fuel pump and subsequent fuel starvation.
- [NTSB LAX96FA228](https://openairdocs.org/ntsb/LAX96FA228.md): British Aerospace BA-3100/3201 · San Luis Obispo, CA · Accident · No injuries · Field investigation · Final report · Jun 6, 1996 · N926AE · Substantial damage
  > The flight crew's loss of directional control resulting from an attempted takeoff with the left propeller on the start lock. Factors in the accident were: the lack of cockpit caution/warning system/lights available to verify that the propellers are out of the…
- [NTSB CHI96LA162](https://openairdocs.org/ntsb/CHI96LA162.md): Swearingen SA226TC · Fargo, ND · Accident · No injuries · Limited investigation · Final report · May 17, 1996 · N229AM · Substantial damage
  > the flight crew did not comply with the gear down and lock checklist. The factors were a jammed nose gear and inattentive preflight planning/preparations by the pilot-in-command.
- [NTSB FTW96LA215](https://openairdocs.org/ntsb/FTW96LA215.md): Mitsubishi MU-2B-40 · Houston, TX · Accident · Minor injuries · Limited investigation · Final report · May 16, 1996 · N40AM · Substantial damage
  > failure of the pilot to obtain/maintain proper airspeed and flap setting for single engine flight. A factor relating to the accident was: Loss of power in the left engine for an undetermined reason.
- [NTSB MIA96IA114](https://openairdocs.org/ntsb/MIA96IA114.md): Mitsubishi MU-2G-30 · Columbia, SC · Incident · No injuries · Incident investigation · Final report · Apr 12, 1996 · N920S · Minor damage
  > failure of the nose landing gear bearing due to improper assembly and staking (inadequate quality control) by the manufacturer; which prevented the nose gear from retracting and the main gear from extending, and resulted in a subsequent landing on the nose…
- [NTSB ATL96LA078](https://openairdocs.org/ntsb/ATL96LA078.md): Mitsubishi MU-2B · Batesville, MS · Accident · No injuries · Limited investigation · Final report · Apr 7, 1996 · N310MA · Substantial damage
  > an anomaly in the fuel system that allowed a pressure differential to occur between the center and outer portions of the main integral fuel tank, which in turn resulted in fuel starvation of both engines. A factor relating to the accident was: failure of…
- [NTSB CHI96IA066](https://openairdocs.org/ntsb/CHI96IA066.md): Fairchild SA227-AC · Bemidji, MN · Incident · No injuries · Incident investigation · Final report · Dec 28, 1995 · N159MC · No damage
  > inadequate maintenance installation and inspection of the elevator flight control system which led to restricted flight control elevator movement due to a loose bolt.

Next page: https://openairdocs.org/ntsb.md?engine=01514&page=4

## 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('01514', '01517'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=01514&page=3

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