# NTSB investigations: Pratt & Whitney PT6A 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 7 of 13 · 650 cases ## Cases, newest first - [NTSB WPR09CA064](https://openairdocs.org/ntsb/WPR09CA064.md): Air Tractor AT-502 · Dinuba, CA · Accident · No injuries · Data collection · Final report · Dec 16, 2008 · N1035F · Substantial damage > The failure of maintenance personnel to properly install the engine's Py line correctly, which resulted in the total loss of engine power and subsequent force landing. Contributing to the accident was the lack of suitable terrain. - [NTSB ERA09WA037](https://openairdocs.org/ntsb/ERA09WA037.md): Beech 65A90 · Timehri, Guyana · Accident · 3 fatal · Foreign investigation · Nov 1, 2008 · N87V · No damage - [NTSB ERA09WA028](https://openairdocs.org/ntsb/ERA09WA028.md): Hawker-Beechcraft 100 · Bauru, Brazil · Accident · 1 fatal · Class 5 · Foreign · Oct 12, 2008 · N525ZS · Destroyed - [NTSB ANC09LA004](https://openairdocs.org/ntsb/ANC09LA004.md): Cessna 208B · Bethel, AK · Accident · Minor injuries · Limited investigation · Final report · Oct 8, 2008 · N1229C · 2 aircraft · Substantial damage > The failure of both pilots to maintain adequate clearance/distance from each other at the taxiway intersection to avoid a collision. Contributing to the accident was a lack of clear and concise instruction to either airplane by the ground controller to… - [NTSB DEN08LA151](https://openairdocs.org/ntsb/DEN08LA151.md): Beech 1900D · St. Louis, MO · Accident · No injuries · Limited investigation · Final report · Sep 7, 2008 · N122UX · Substantial damage > The ground crew's failure to ensure airplane clearance from the building while parking the airplane. Contributing to the accident was the flight crew's unprofessional behavior and the lack of marshaling procedures for the ground crew. - [NTSB DFW08CA219](https://openairdocs.org/ntsb/DFW08CA219.md): Piper PA46-500TP · St. Louis, MO · Accident · No injuries · Data collection · Final report · Aug 20, 2008 · N618MA · Substantial damage > The pilot's failure to ensure that the landing gear was placed in the down position prior to landing. - [NTSB CHI08CA257](https://openairdocs.org/ntsb/CHI08CA257.md): Air Tractor AT-400A · Luverne, MN · Accident · No injuries · Data collection · Final report · Aug 16, 2008 · N7307W · Substantial damage > The failure of the compressor turbine blades which resulted in the loss of power. Factors associated with the accident were the low altitude and the trees. - [NTSB DEN08IA143](https://openairdocs.org/ntsb/DEN08IA143.md): Raytheon C90A · Jasper, TX · Incident · No injuries · Incident investigation · Final report · Aug 14, 2008 · N688LL · Minor damage > The impact with a bird during initial takeoff climb. - [NTSB NYC08CA279](https://openairdocs.org/ntsb/NYC08CA279.md): Air Tractor AT-502B · Tunica, MS · Accident · No injuries · Data collection · Final report · Aug 13, 2008 · N61267 · Substantial damage > The pilot's failure to maintain clearance from the power lines during low-altitude maneuvers. - [NTSB DEN08CA136](https://openairdocs.org/ntsb/DEN08CA136.md): Air Tractor AT-402 · Dexter, NM · Accident · No injuries · Data collection · Final report · Aug 9, 2008 · N4555Y · Substantial damage > The pilot's failure to maintain directional control of the airplane. - [NTSB CHI08CA217](https://openairdocs.org/ntsb/CHI08CA217.md): Grumman G-164A · Veedersburg, IN · Accident · No injuries · Data collection · Final report · Jul 28, 2008 · N9892 · Substantial damage > The oil filler cap not reinstalled by the pilot prior to the aerial application flight and the total loss of engine oil during an aerial application. Additional causes were the low altitude of the operation and the unsuitable terrain encountered by the pilot… - [NTSB CHI08CA201](https://openairdocs.org/ntsb/CHI08CA201.md): Grumman G-164D · Esmond, ND · Accident · Minor injuries · Data collection · Final report · Jul 21, 2008 · N996QC · Substantial damage > The pilot's delay in advancing the throttle during the takeoff which resulted in inadequate airspeed and the subsequent stall/mush. Factors associated with the accident were the leaking hopper, the pilot continuing to operate the airplane with the known… - [NTSB DEN08LA125](https://openairdocs.org/ntsb/DEN08LA125.md): Air Tractor AT-402B · Deerfield, KS · Accident · Minor injuries · Limited investigation · Final report · Jul 20, 2008 · N61318 · Destroyed > The pilot inadvertently stalling the airplane. Contributing factors in this accident were the pilot intentionally performing low altitude maneuvers (side slips), unporting and starving the engine of fuel, and his initiating a climb at low airspeed. - [NTSB DFW08LA167](https://openairdocs.org/ntsb/DFW08LA167.md): Air Tractor AT-502B · Bethany, MO · Accident · No injuries · Limited investigation · Final report · Jun 24, 2008 · N5005G · Substantial damage > The pilot's decision to take off with a known deficiency. - [NTSB MIA08CA137](https://openairdocs.org/ntsb/MIA08CA137.md): Air Tractor AT-402B · Muscle Shoals, AL · Accident · No injuries · Data collection · Final report · Jun 12, 2008 · N402BT · Substantial damage > The pilot's failure to maintain clearance from utility wires during low altitude maneuvers. - [NTSB DFW08LA143](https://openairdocs.org/ntsb/DFW08LA143.md): Air Tractor AT-502B · Wheatley, AR · Accident · 1 fatal · Limited investigation · Final report · May 15, 2008 · N6112D · Substantial damage > The pilot's failure to maintain airspeed, resulting in an inadvertent low-altitude aerodynamic stall. - [NTSB DFW08CA116](https://openairdocs.org/ntsb/DFW08CA116.md): Air Tractor AT-402 · Carlsbad, NM · Accident · No injuries · Data collection · Final report · Apr 25, 2008 · N402SK · Substantial damage > The pilot's improper decision to takeoff uphill with full fuel and fuel chemical load. A factor was the pilot's failure to calculate performance data. - [NTSB SEA08IA096](https://openairdocs.org/ntsb/SEA08IA096.md): Raytheon 1900D · Page, AZ · Incident · No injuries · Incident investigation · Final report · Mar 26, 2008 · N261GL · Minor damage > The flight crew’s unprofessional behavior and deviation from standard operating procedures which resulted in an in-flight emergency. - [NTSB LAX08CA091](https://openairdocs.org/ntsb/LAX08CA091.md): Beech F90 · Idaho Falls, ID · Accident · No injuries · Data collection · Final report · Mar 20, 2008 · N124BK · Substantial damage > the pilot's misjudged distance and airspeed that led to a failure to attain the proper touchdown point and a runway overrun. Contributing factors were the snow and muddy conditions off the runway. - [NTSB SEA08LA082](https://openairdocs.org/ntsb/SEA08LA082.md): Raytheon 1900D · Kayenta, AZ · Accident · Serious injuries · Limited investigation · Final report · Feb 22, 2008 · N305PC · Substantial damage > The flight crew's failure to execute a missed approach, which resulted in a runway excursion after landing. Contributing to the accident were the inoperative lights, weather conditions below published approach minimums, and the slush contaminated runway. - [NTSB ANC08LA031](https://openairdocs.org/ntsb/ANC08LA031.md): Cessna 208B · Bethel, AK · Accident · Minor injuries · Limited investigation · Final report · Jan 15, 2008 · N454SF · Substantial damage > The pilot's selection of unsuitable terrain for landing. Contributing to the accident were snow-covered terrain, blowing snow and flat lighting conditions. - [NTSB MIA08WA033](https://openairdocs.org/ntsb/MIA08WA033.md): Cessna 208B · Chub Cay, Bahamas · Accident · No injuries · Class 5 · Foreign · Dec 20, 2007 · N954PA · Substantial damage > On December 20, 2007, about 1630 Atlantic standard time, a Cessna 208B, N954PA, registered to and operated by Agape Flights, Inc., was ditched in the Atlantic Ocean approximately 30 nautical miles west-northwest of Chub Cay, Bahamas. The commercial-rated… - [NTSB ANC08LA027](https://openairdocs.org/ntsb/ANC08LA027.md): Cessna 208B · Bethel, AK · Accident · Serious injuries · Limited investigation · Final report · Dec 18, 2007 · N5187B · Substantial damage > The pilot's failure to adequately remove frost contamination from the airplane, which resulted in a loss of control and subsequent collision with terrain during an emergency landing after takeoff. - [NTSB CHI08FA045](https://openairdocs.org/ntsb/CHI08FA045.md): Cessna 208B · Columbus, OH · Accident · 2 fatal · Field investigation · Final report · Dec 5, 2007 · N28MG · Destroyed > The pilot's failure to maintain aircraft control and collision avoidance with terrain due to spatial disorientation. Contributing to the accident were the low cloud ceiling and night conditions. - [NTSB MIA08LA014](https://openairdocs.org/ntsb/MIA08LA014.md): Cessna C208B · Opa Locka, FL · Accident · No injuries · Limited investigation · Final report · Nov 6, 2007 · N701SE · 2 aircraft · Substantial damage > Failure of the local controller to coordinate with the ground controller and the failure of the pilots to see and avoid each other. - [NTSB DFW08CA009](https://openairdocs.org/ntsb/DFW08CA009.md): Air Tractor AT-602 · Columbia, LA · Accident · No injuries · Data collection · Final report · Oct 11, 2007 · N8521L · Substantial damage > The pilot's selection of an unsuitable landing area. Contributing factors were the tall vegetation on the sides of the airstrip and the short and confined landing area. - [NTSB DFW08CA014](https://openairdocs.org/ntsb/DFW08CA014.md): Air Tractor 402B · Taft, TX · Accident · No injuries · Data collection · Final report · Oct 10, 2007 · N5006K · Substantial damage > The pilot's failure to maintain control during takeoff. A contributing factor was the prevailing crosswind. - [NTSB LAX08MA007](https://openairdocs.org/ntsb/LAX08MA007.md): Cessna 208B · Naches, WA · Accident · 10 fatal · Major investigation · Final report · Oct 8, 2007 · N430A · Destroyed > The pilot's failure to maintain an adequate airspeed to avoid an aerodynamic stall while maneuvering. Contributing to the accident were the pilot's impaired physiological state due to hypoxia, the pilot's inadequate preflight weather evaluation, and his… - [NTSB DEN08FA003](https://openairdocs.org/ntsb/DEN08FA003.md): Raytheon C90A · Pagosa Springs, CO · Accident · 3 fatal · Field investigation · Final report · Oct 5, 2007 · N590GM · Destroyed > The pilot's failure to maintain clearance from mountainous terrain. Contributing to the accident was the pilot's inadequate preflight planning, improper in-flight planning and decision making, the dark night, and the controller's failure to issue a safety… - [NTSB LAX07TA277](https://openairdocs.org/ntsb/LAX07TA277.md): Air Tractor AT-802A · Big Bear City, CA · Accident · No injuries · Final report · Sep 17, 2007 · N91357 · Substantial damage > Loss of engine power while maneuvering due to the failure of the number 1 bearing that was caused by electrical discharge damage to the bearing originating from the starter-generator. Contributing to the accident was the operator's failure to follow the… - [NTSB DFW07LA203](https://openairdocs.org/ntsb/DFW07LA203.md): Air Tractor AT 602 · Floydada, TX · Accident · No injuries · Limited investigation · Final report · Sep 14, 2007 · N8522P · Substantial damage > A leak in the outer ply of the BeCu bellows. This hole appeared to be the result of pitting corrosion, but the corroding agent was not determined. - [NTSB SEA07CA244](https://openairdocs.org/ntsb/SEA07CA244.md): Air Tractor AT-502B · Salome, AZ · Accident · No injuries · Data collection · Final report · Aug 30, 2007 · N8521Z · Substantial damage > The pilot's inadequate compensation for the tailwind condition and failure to maintain directional control during the takeoff roll/run, which resulted in a ground loop. - [NTSB SEA07LA242](https://openairdocs.org/ntsb/SEA07LA242.md): Air Tractor AT-502B · Blythe, CA · Accident · No injuries · Limited investigation · Final report · Aug 29, 2007 · N6003G · Substantial damage > The pilot's failure to maintain adequate airspeed which resulted in a stall. A contributing factor was the high density altitude. - [NTSB CHI07CA259](https://openairdocs.org/ntsb/CHI07CA259.md): Air Tractor AT-502 · Creston, IA · Accident · No injuries · Data collection · Final report · Aug 9, 2007 · N9195G · Substantial damage > The loss of engine power due to fuel starvation as a result of the pilot's inadequate fuel calculations. - [NTSB ANC07FA073](https://openairdocs.org/ntsb/ANC07FA073.md): Piper PA-46-350P · Sitka, AK · Accident · 4 fatal · Field investigation · Final report · Aug 6, 2007 · N35CX · Destroyed > The pilot's failure to maintain altitude/distance from obstacles during an IFR circling approach, and his failure to follow the instrument approach procedure. Contributing to the accident was clouds. - [NTSB CHI07LA246](https://openairdocs.org/ntsb/CHI07LA246.md): Air Tractor AT-502B · Hampton, IA · Accident · No injuries · Limited investigation · Final report · Aug 1, 2007 · N50877 · Substantial damage > The pilot's failure to maintain directional control during landing. Contributing to the accident was a ditch. - [NTSB DFW07LA165](https://openairdocs.org/ntsb/DFW07LA165.md): Air Tractor AT-502 · Slaton, TX · Accident · No injuries · Limited investigation · Final report · Jul 20, 2007 · N15400 · Substantial damage > An uncontained failure of the turbine engine's power section for undetermined reasons. - [NTSB CHI07LA213](https://openairdocs.org/ntsb/CHI07LA213.md): Air Tractor AT-402A · Laurel, IA · Accident · 1 fatal · Limited investigation · Final report · Jul 16, 2007 · N203DM · Substantial damage > The pilot failed to maintain clearance with the upsloping terrain for undetermined reasons. - [NTSB DEN07WA113](https://openairdocs.org/ntsb/DEN07WA113.md): Cessna 208B · Inverin, Ireland · Accident · 2 fatal · Foreign investigation · Jul 5, 2007 · N208EC · Destroyed - [NTSB SEA07LA204](https://openairdocs.org/ntsb/SEA07LA204.md): Air Tractor AT-502A · Chowchilla, CA · Accident · No injuries · Limited investigation · Final report · Jun 30, 2007 · N6176L · Substantial damage > The loss of engine power as the result of the fatigue fracture and separation of two compressor turbine blades, which induced a catastrophic failure of the compressor turbine section. - [NTSB DEN07LA101](https://openairdocs.org/ntsb/DEN07LA101.md): Beech 1900D · Laramie, WY · Accident · No injuries · Limited investigation · Final report · Jun 20, 2007 · N253GL · Substantial damage > The pilot's improper decision, his misjudgment of his speed and distance, and his failure to perform a go-around resulting in the airplane overrunning the runway and striking an electrical box. Factors contributing to the accident were the failure of the crew… - [NTSB CHI07LA174](https://openairdocs.org/ntsb/CHI07LA174.md): Ayres S2R-T15 · Stuttgart, AR · Accident · Serious injuries · Limited investigation · Final report · Jun 20, 2007 · N113CA · Substantial damage > The loss of engine power for undetermined reasons during an aerial application flight and the unsuitable landing area encountered by the pilot during the subsequent forced landing. An additional cause was the low altitude of an aerial application operation. - [NTSB DFW07CA123](https://openairdocs.org/ntsb/DFW07CA123.md): Air Tractor AT-502B · Banquete, TX · Accident · No injuries · Data collection · Final report · May 29, 2007 · N502DB · Substantial damage > The pilot's failure to maintain clearance from the power transmission line(s). A contributing factor was the low altitude selected by the pilot. - [NTSB SEA07LA133](https://openairdocs.org/ntsb/SEA07LA133.md): Beech B-99 · Billings, MT · Accident · No injuries · Limited investigation · Final report · May 19, 2007 · N950AA · Substantial damage > The total failure of the nose landing gear actuator and the subsequent nose gear collapse during landing. - [NTSB CHI07LA147](https://openairdocs.org/ntsb/CHI07LA147.md): Thrush S2RHG-T65 · Tyndall, SD · Accident · 1 fatal · Limited investigation · Final report · May 19, 2007 · N40097 · Destroyed > The pilot not maintaining altitude/clearance from a powerline while maneuvering. A factor was the low visibility associated with the thunderstorm and the powerlines. - [NTSB DFW07CA114](https://openairdocs.org/ntsb/DFW07CA114.md): Air Tractor AT-402A · Edmonson, TX · Accident · Minor injuries · Data collection · Final report · May 16, 2007 · N120CP · Substantial damage > The pilot's failure to maintain clearance with the crops. - [NTSB MIA07WA082](https://openairdocs.org/ntsb/MIA07WA082.md): Beech 1900D · Marsh Harbour, Bahamas · Incident · No injuries · Foreign investigation · Apr 18, 2007 · N46AR · No damage - [NTSB ATL07CA051](https://openairdocs.org/ntsb/ATL07CA051.md): Air Tractor AT-502B · Collinwood, TN · Accident · No injuries · Data collection · Final report · Mar 15, 2007 · N90319 · Substantial damage > The pilots improper inflight planning which resulted in a loss of engine power due to fuel exhaustion. - [NTSB DEN07WA060](https://openairdocs.org/ntsb/DEN07WA060.md): Piper PA-31T · Rieschweiler, Germany · Accident · 1 fatal · Foreign investigation · Feb 12, 2007 · N160TR · Destroyed - [NTSB CHI07FA068](https://openairdocs.org/ntsb/CHI07FA068.md): Cessna 208B · Alliance, NE · Accident · Serious injuries · Field investigation · Final report · Feb 8, 2007 · N1116Y · Substantial damage > The pilot's descent below minimum descent altitude while on a nonprecision approach. A contributing factor was a low ceiling. Next page: https://openairdocs.org/ntsb.md?engine=52032&page=8 ## 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 ('52032', '52034')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=52032&page=7 --- 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.