# NTSB investigations: Pratt & Whitney PT6A series: Loss of control - in flight

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.

## Latest cases

- [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 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 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 NYC07FA065](https://openairdocs.org/ntsb/NYC07FA065.md): Socata TBM 700 · Dartmouth, MA · Accident · 3 fatal · Field investigation · Final report · Feb 3, 2007 · N944CA · Destroyed
  > Both pilots' failure to maintain aircraft control during a missed approach.
- [NTSB CHI07LA059](https://openairdocs.org/ntsb/CHI07LA059.md): Cessna 425 · Harbor Springs, MI · Accident · Minor injuries · Limited investigation · Final report · Jan 12, 2007 · N425TN · Destroyed
  > The pilot's failure to maintain aircraft control and adequate airspeed during landing flare. Contributing to the accident was the aerodynamic stall/mush encountered at a low altitude.
- [NTSB DEN07LA020](https://openairdocs.org/ntsb/DEN07LA020.md): Air Tractor AT-502A · Deming, NM · Accident · 1 fatal · Limited investigation · Final report · Nov 6, 2006 · N1541T · Destroyed
  > The pilot's failure to maintain aircraft control while maneuvering resulting in an inadvertent stall and impact with terrain. A contributing factor was the low airspeed.
- [NTSB CHI05CA245](https://openairdocs.org/ntsb/CHI05CA245.md): Air Tractor AT-502 · Hector, MN · Accident · No injuries · Data collection · Final report · Aug 29, 2005 · N4550N · Substantial damage
  > The pilot's failure to achieve adequate airspeed on takeoff which resulted in the airplane entering a stall/mush when it flew out of ground effect while crossing a large drainage ditch on takeoff.
- [NTSB DFW05CA191](https://openairdocs.org/ntsb/DFW05CA191.md): Air Tractor AT-502B · Gassoway, LA · Accident · No injuries · Data collection · Final report · Jul 23, 2005 · N50075 · Substantial damage
  > The pilot's premature lift-off which resulted in an inadequate climb for terrain clearance. Also causal was the pilot's failure to abort the takeoff. A contributing factor was the high density altitude.
- [NTSB LAX05LA203](https://openairdocs.org/ntsb/LAX05LA203.md): Beech C90 · Marble Canyon, AZ · Accident · Serious injuries · Limited investigation · Final report · Jun 13, 2005 · N49LL · Substantial damage
  > the pilot's failure to maintain an adequate airspeed while maneuvering during a go-around, which resulted in a stall.
- [NTSB DFW05CA131](https://openairdocs.org/ntsb/DFW05CA131.md): Air Tractor AT-402A · Cherry Valley, AR · Accident · No injuries · Data collection · Final report · May 24, 2005 · N198AS · Substantial damage
  > The pilot's failure to calculate take off-distance performance data, which resulted in insufficient runway length for take off. Factors were the tailwind and high gross weight.
- [NTSB SEA05FA025](https://openairdocs.org/ntsb/SEA05FA025.md): Cessna 208B · Bellevue, ID · Accident · 2 fatal · Field investigation · Final report · Dec 6, 2004 · N25SA · Destroyed
  > The pilot's failure to maintain aircraft control while on approach for landing in icing conditions. Inadequate airspeed was a factor.
- [NTSB LAX04LA275](https://openairdocs.org/ntsb/LAX04LA275.md): Air Tractor AT-502B · Mendota, CA · Accident · No injuries · Limited investigation · Final report · Jul 23, 2004 · N5010E · Substantial damage
  > The pilot's inadequate preflight/pretakeoff procedure by not lowering the wing flaps, which resulted in an inadvertent stall as the pilot attempted to climb out of ground effect to clear a corn crop at the end of the runway. A factor in the accident was the…
- [NTSB NYC04LA050](https://openairdocs.org/ntsb/NYC04LA050.md): Cessna 208B · Covington, KY · Accident · No injuries · Limited investigation · Final report · Dec 20, 2003 · N9469B · Substantial damage
  > The pilot's inadequate pre-flight inspection, which resulted in a decrease in airplane performance due to ice, and a subsequent hard landing.
- [NTSB NYC04LA044](https://openairdocs.org/ntsb/NYC04LA044.md): Socata TBM 700 · Reading, PA · Accident · No injuries · Limited investigation · Final report · Dec 6, 2003 · N700QD · Substantial damage
  > The pilot's improper decision to not apply de-icing fluid to the wings prior to takeoff, which resulted in snow/ice contamination on the of the wings, a stall mush, and a forced landing in an open field.
- [NTSB FTW03LA223](https://openairdocs.org/ntsb/FTW03LA223.md): Air Tractor AT-502B · Farwell, TX · Accident · 1 fatal · Limited investigation · Final report · Sep 12, 2003 · N61353 · Destroyed
  > The pilot's failure to maintain airspeed while maneuvering which resulted in an inadvertent stall.
- [NTSB NYC03MA183](https://openairdocs.org/ntsb/NYC03MA183.md): Beech 1900D · Yarmouth, MA · Accident · 2 fatal · Major investigation · Final report · Aug 26, 2003 · N240CJ · Destroyed
  > The improper replacement of the forward elevator trim cable, and subsequent inadequate functional check of the maintenance performed, which resulted in a reversal of the elevator trim system and a loss of control in-flight. Factors were the flightcrew's…
- [NTSB LAX03LA180](https://openairdocs.org/ntsb/LAX03LA180.md): Air Tractor AT-502A · Raywood, TX · Accident · Minor injuries · Limited investigation · Final report · Jun 3, 2003 · N948BB · Destroyed
  > the pilot's encounter with a stall/mush condition in the takeoff initial climb due to his inadequate preflight/pretakeoff procedures and failure to set the wing flaps to the proper takeoff configuration before beginning the takeoff ground roll.
- [NTSB CHI03LA118](https://openairdocs.org/ntsb/CHI03LA118.md): Air Tractor AT-503A · Pontiac, IL · Accident · 2 fatal · Limited investigation · Final report · May 5, 2003 · N503D · Substantial damage
  > The pilot's failure to maintain adequate airspeed which resulted in an inadvertent stall/spin. A factor associated with the accident was the low altitude maneuver.
- [NTSB FTW03LA141](https://openairdocs.org/ntsb/FTW03LA141.md): Air Tractor AT-502B · Pond Creek, OK · Accident · No injuries · Limited investigation · Final report · Apr 28, 2003 · N60819 · Destroyed
  > The pilot's failure to attain adequate airspeed during liftoff resulting in a stall.
- [NTSB IAD03FA035](https://openairdocs.org/ntsb/IAD03FA035.md): Socata TBM 700 · Leesburg, VA · Accident · 3 fatal · Field investigation · Final report · Mar 1, 2003 · N700PP · Substantial damage
  > The pilot's failure to fly a stabilized, published instrument approach procedure, and his failure to maintain adequate airspeed which led to an aerodynamic stall.
- [NTSB DCA03MA022](https://openairdocs.org/ntsb/DCA03MA022.md): Beech 1900D · Charlotte, NC · Accident · 21 fatal · Class 1 · Major · Final report · Jan 8, 2003 · N233YV · Destroyed
  > the airplane's loss of pitch control during take-off. The loss of pitch control resulted from the incorrect rigging of the elevator system compounded by the airplane's aft center of gravity, which was substaintially aft of the certified aft limit.…
- [NTSB CHI03FA041](https://openairdocs.org/ntsb/CHI03FA041.md): Cessna 208B · Rockford, IL · Accident · 1 fatal · Field investigation · Final report · Dec 18, 2002 · N277PM · Destroyed
  > The pilot's failure to maintain control of the airplane during the ILS approach. Factors associated with the accident were the low ceilings, high winds, crosswind, and wind shear conditions that existed.
- [NTSB ATL03FA008](https://openairdocs.org/ntsb/ATL03FA008.md): Cessna 208B · Spanish Fort, AL · Accident · 1 fatal · Field investigation · Final report · Oct 24, 2002 · N76U · Destroyed
  > the pilot's spatial disorientation, which resulted in loss of airplane control. Contributing to the accident was the night instrument meteorological conditions with variable cloud layers.
- [NTSB LAX02LA240](https://openairdocs.org/ntsb/LAX02LA240.md): Air Tractor AT-502 · San Manuel, AZ · Accident · Minor injuries · Limited investigation · Final report · Jul 27, 2002 · N293JK · Substantial damage
  > the pilot's failure to maintain adequate airspeed while maneuvering in a box canyon, which resulted in a stall/mush. A factor in the accident was downdraft conditions that led to an uncontrolled decent.
- [NTSB LAX02FA108](https://openairdocs.org/ntsb/LAX02FA108.md): Beech E90 · Reno, NV · Accident · Serious injuries · Field investigation · Final report · Mar 14, 2002 · N948CC · Destroyed
  > The pilot's inadequate approach airspeed for the existing adverse meteorological conditions followed by his delayed remedial action to avert stalling and subsequent loss of airplane control. Contributing factors were the pilot's reduced visibility due to the…
- [NTSB FTW02LA086](https://openairdocs.org/ntsb/FTW02LA086.md): Air Tractor AT-502B · Extension, LA · Accident · 1 fatal · Limited investigation · Final report · Feb 28, 2002 · N6073U · Substantial damage
  > The pilot's failure to maintain aircraft control. A factor was the pilot's impairment due to drugs.
- [NTSB FTW01LA147](https://openairdocs.org/ntsb/FTW01LA147.md): Air Tractor AT-502B · Newport, AR · Accident · No injuries · Limited investigation · Final report · Jun 19, 2001 · N6082B · Substantial damage
  > the loss of control during takeoff initial climb as a result of encountering wake turbulence due to the pilot's failure to recognize the hazard and delay the takeoff.
- [NTSB CHI01LA151](https://openairdocs.org/ntsb/CHI01LA151.md): Air Tractor AT-402B · Mount Vernon, SD · Accident · 1 fatal · Limited investigation · Final report · Jun 3, 2001 · N484WB · Destroyed
  > the pilot not maintaining aircraft control while maneuvering close to the ground.
- [NTSB DEN01FA094](https://openairdocs.org/ntsb/DEN01FA094.md): Cessna 208B · Steamboat Spngs, CO · Accident · 1 fatal · Field investigation · Final report · May 5, 2001 · N948FE · Destroyed
  > an inadvertent stall during an instrument approach, which resulted in a loss of control. Contributing factors were the pilot's attention being diverted by an abnormal indication, conditions conducive to airframe icing, and the pilot's lack of total experience…
- [NTSB DEN01FA075](https://openairdocs.org/ntsb/DEN01FA075.md): Socata TBM 700 · Englewood, CO · Accident · 1 fatal · Field investigation · Final report · Mar 26, 2001 · N300WC · Destroyed
  > the pilot's spatial disorientation, which led to his failure to maintain aircraft control. A contributing factor was the pilot's decision to intentionally fly into known adverse weather that consisted of low ceilings, obscuration, and ice fog.
- [NTSB CHI00LA177](https://openairdocs.org/ntsb/CHI00LA177.md): Air Tractor AT-502 · Portland, ND · Accident · No injuries · Limited investigation · Final report · Jun 29, 2000 · N91891 · Substantial damage
  > the pilot intentionally operated the airplane with known damage on the left wing which resulted in the pilot's inability to maintain control of the airplane during takeoff.
- [NTSB MIA98LA202](https://openairdocs.org/ntsb/MIA98LA202.md): Air Tractor 502 · Clewiston, FL · Accident · No injuries · Limited investigation · Final report · Jul 17, 1998 · N9184R · Substantial damage
  > The pilot's failure to attain adequate airspeed. A tailwind was a contributing factor.
- [NTSB FTW98FA100](https://openairdocs.org/ntsb/FTW98FA100.md): Air Tractor 502B · Eudora, AR · Accident · 1 fatal · Field investigation · Final report · Jan 16, 1998 · N6093U · Destroyed
  > The pilot's failure to maintain adequate airspeed while attempting an aerobatic manuever
- [NTSB MIA96LA232](https://openairdocs.org/ntsb/MIA96LA232.md): Air Tractor 402 · Slocomb, AL · Accident · 1 fatal · Limited investigation · Final report · Sep 24, 1996 · N9130M · Destroyed
  > The pilot's failure to maintain airspeed.
- [NTSB CHI95LA278](https://openairdocs.org/ntsb/CHI95LA278.md): Air Tractor AT-400 · Hayti, MO · Accident · 1 fatal · Limited investigation · Final report · Aug 15, 1995 · N2315Z · Destroyed
  > the pilot inadvertently stalled the airplane. A factor was the reduced power setting.
- [NTSB FTW94LA119](https://openairdocs.org/ntsb/FTW94LA119.md): Cessna 208 · Whitewright, TX · Accident · Serious injuries · Limited investigation · Final report · Apr 3, 1994 · N9421F · Minor damage
  > The inadvertent stall when too many parachutist hung on the outside of the aircraft.
- [NTSB CHI91DER07](https://openairdocs.org/ntsb/CHI91DER07.md): Piper PA-36-375 · Breckentidge, MN · Accident · No injuries · Final report · Jun 14, 1991 · N3866E · Substantial damage
  > The pilot's failure to take adequate remedial action during the attempted climb out. A related factor is the premature lift off.

## 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')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 250))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52032&occurrence=250

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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.