# NTSB investigations: Pratt & Whitney R1340 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.

Page 1 of 2 · 57 cases

## Latest cases

- [NTSB ATL04LA173](https://openairdocs.org/ntsb/ATL04LA173.md): Air Tractor AT-401B · Bainbridge, GA · Accident · 1 fatal · Limited investigation · Final report · Sep 4, 2004 · N3047A · Substantial damage
  > The pilot's failure to maintain adequate airspeed during an abrupt maneuver which resulted in a stall and collision with the ground.
- [NTSB SEA04CA132](https://openairdocs.org/ntsb/SEA04CA132.md): Air Tractor AT-301 · Waitsburg, WA · Accident · No injuries · Data collection · Final report · Jul 12, 2004 · N23811 · Substantial damage
  > The pilot's failure to maintain aircraft control and his inadequate compensation for the wind conditions during the landing. Gusts and high vegetation were factors.
- [NTSB FTW03LA084](https://openairdocs.org/ntsb/FTW03LA084.md): Air Tractor AT-401 · Alamo, TX · Accident · Serious injuries · Limited investigation · Final report · Jan 14, 2003 · N1537R · Substantial damage
  > The pilot's failure to maintain airspeed which resulted in a stall. Low altitude flight is a contributing factor.
- [NTSB LAX02LA246](https://openairdocs.org/ntsb/LAX02LA246.md): Aero Commander S2R-T34 · Los Banos, CA · Accident · No injuries · Limited investigation · Final report · Aug 5, 2002 · N8822Q · Substantial damage
  > The pilot's failure to maintain an adequate airspeed while maneuvering, which resulted in an inadvertent stall.
- [NTSB FTW02LA221](https://openairdocs.org/ntsb/FTW02LA221.md): Grumman G-164A · New Roads, LA · Accident · Minor injuries · Limited investigation · Final report · Jul 29, 2002 · N48523 · Substantial damage
  > The pilot's failure to maintain adequate airspeed resulting in an inadvertent stall/spin of the airplane.
- [NTSB FTW02LA020](https://openairdocs.org/ntsb/FTW02LA020.md): Air Tractor AT-301 · Morton, TX · Accident · 1 fatal · Limited investigation · Final report · Oct 22, 2001 · N4395S · Destroyed
  > The pilot's loss of control of the airplane during an aerial application maneuver.
- [NTSB CHI01LA240](https://openairdocs.org/ntsb/CHI01LA240.md): Snow 600-S2C · Plainfield, WI · Accident · No injuries · Limited investigation · Final report · Jul 21, 2001 · N8703V · Substantial damage
  > The pilot not maintaining aircraft control while maneuvering on the aerial application flight. A factor to the accident was the encountered stall/mush at a low altitude.
- [NTSB MIA01LA166](https://openairdocs.org/ntsb/MIA01LA166.md): Air Tractor AT-301 · Finley, TN · Accident · 1 fatal · Limited investigation · Final report · Jun 19, 2001 · N23672 · Destroyed
  > The failure of the pilot to maintain aircraft altitude control while on downwind leg of the landing pattern, resulting in an uncontrolled descent and in-flight collision with the terrain.
- [NTSB DEN00FA164](https://openairdocs.org/ntsb/DEN00FA164.md): North American SNJ-5 · Steamboat Spg, CO · Accident · 2 fatal · Field investigation · Final report · Sep 3, 2000 · N440JG · Destroyed
  > the pilot's inadvertent entry into a spin while performing aerobatics.
- [NTSB MIA00LA245](https://openairdocs.org/ntsb/MIA00LA245.md): Schweizer G-164A · Berlin, GA · Accident · No injuries · Limited investigation · Final report · Aug 23, 2000 · N8919H · Substantial damage
  > the pilot's failure to maintain adequate airspeed resulting in an inadvertent stall and collision with terrain.
- [NTSB CHI00LA257](https://openairdocs.org/ntsb/CHI00LA257.md): Ayres S2R-600 · Bad Axe, MI · Accident · 1 fatal · Limited investigation · Final report · Aug 14, 2000 · N3103B · Destroyed
  > The inadvertent stall/spin encountered by the pilot. A factor was the low altitude.
- [NTSB FTW00LA210](https://openairdocs.org/ntsb/FTW00LA210.md): Grumman-Schweizer G-164B · Ville Platte, LA · Accident · 1 fatal · Limited investigation · Final report · Jul 15, 2000 · N428KG · Destroyed
  > The loss of control for an undetermined reason.
- [NTSB DEN99LA169](https://openairdocs.org/ntsb/DEN99LA169.md): Schweizer G-164A · Animas, NM · Accident · Minor injuries · Limited investigation · Final report · Sep 23, 1999 · N8731H · Substantial damage
  > A inadvertent stall during initial climb following takeoff. Factor were: high gross weight, high density altitude, inadequate preflight planning and preparation, and soft terrain.
- [NTSB SEA99LA115](https://openairdocs.org/ntsb/SEA99LA115.md): Grumman G-164B · Paul, ID · Accident · No injuries · Limited investigation · Final report · Jul 12, 1999 · N8005C · Substantial damage
  > The pilot's failure to attain adequate airspeed during takeoff and initial climb, resulting in stall/mush and inability of the aircraft to sustain level flight. Factors included high density altitude, a tailwind, an uphill takeoff surface, and crops in the…
- [NTSB FTW99LA134](https://openairdocs.org/ntsb/FTW99LA134.md): Grumman-Schweizer G164-B · Garwood, TX · Accident · No injuries · Limited investigation · Final report · May 8, 1999 · N6771K · Destroyed
  > The pilot's failure to maintain adequate airspeed which resulted in an inadvertent stall. A related factor was the high density altitude.
- [NTSB LAX99LA180](https://openairdocs.org/ntsb/LAX99LA180.md): Grumman G-164A · Maxwell, CA · Accident · No injuries · Limited investigation · Final report · May 7, 1999 · N8875H · Destroyed
  > Failure of the pilot to attain and maintain the proper reference climb airspeed during the rotation and initial climb, which resulted in a stall/mush condition.
- [NTSB CHI98LA305](https://openairdocs.org/ntsb/CHI98LA305.md): Air Tractor AT-301 · Edgeley, ND · Accident · No injuries · Limited investigation · Final report · Aug 9, 1998 · N4443S · Substantial damage
  > The pilot's failure to maintain flying airspeed resulting in a stall/mush condition during the initial climb. Contributing factors were the high density altitude, high aircraft weight, and pilot's delayed jettison of the load, as well as the roadway and crop.
- [NTSB CHI98LA217](https://openairdocs.org/ntsb/CHI98LA217.md): Air Tractor AT-301 · Ipswich, SD · Accident · No injuries · Limited investigation · Final report · Jun 25, 1998 · N31677 · Substantial damage
  > the pilot's inadequate evaluation of the weather conditions and his failure to maintain aircraft control which resulted in a stall/mush. Factors associated with the accident were the tailwind condition and the soft terrain.
- [NTSB FTW98FA272](https://openairdocs.org/ntsb/FTW98FA272.md): Ayres S2R-R1340 · Humphrey, AR · Accident · 1 fatal · Field investigation · Final report · Jun 18, 1998 · N4020G · Destroyed
  > The pilot's visual lookout was inadequate for undetermined reasons.
- [NTSB FTW98LA257](https://openairdocs.org/ntsb/FTW98LA257.md): Aero Commander S2R · Hondo, TX · Accident · 1 fatal · Limited investigation · Final report · Jun 6, 1998 · N1765S · Destroyed
  > The inadvertent stall due to the pilot's failure to maintain control of the airplane. Factors were the high winds and the wind induced turbulence.
- [NTSB ATL97LA087](https://openairdocs.org/ntsb/ATL97LA087.md): Air Tractor AT-301A · Labelle, FL · Accident · No injuries · Limited investigation · Final report · Jun 20, 1997 · N23728 · Substantial damage
  > failure of the pilot to maintain adequate airspeed during a turn-around maneuver, which resulted in an aerodynamic stall/mush and collision with the terrain.
- [NTSB FTW97LA136](https://openairdocs.org/ntsb/FTW97LA136.md): Grumman G-164A · Swifton, AR · Accident · 1 fatal · Limited investigation · Final report · Mar 22, 1997 · N8922H · Destroyed
  > the pilot's improper in-flight planning/decision and failure to maintain positive control of the airplane, while performing an aerobatic maneuver.
- [NTSB FTW97LA137](https://openairdocs.org/ntsb/FTW97LA137.md): Aero Commander S2R · Dilley, TX · Accident · No injuries · Limited investigation · Final report · Mar 21, 1997 · N8985Q · Substantial damage
  > failure of the pilot to maintain adequate airspeed, while maneuvering over high transmission line(s), which resulted in a stall/mush and collision with the terrain. The unfavorable weather condition (with turbulence) and the obstruction (high transmission…
- [NTSB SEA96LA113](https://openairdocs.org/ntsb/SEA96LA113.md): Ayres S2R · Aberdeen, ID · Accident · Serious injuries · Limited investigation · Final report · Jun 6, 1996 · N5686X · Substantial damage
  > pilot's improper planning/decision, and subsequent incapacitation, which resulted in a loss of aircraft control and collision with the terrain. Factors relating to the accident were: pilot fatigued from a long-distance drive with minimal rest, physical…
- [NTSB CHI96LA119](https://openairdocs.org/ntsb/CHI96LA119.md): Ayres S2-R · Wyatt, MO · Accident · No injuries · Limited investigation · Final report · Mar 26, 1996 · N3024V · Substantial damage
  > the pilot's failure to maintain control of the airplane during takeoff. A factor was the crosswind condition.
- [NTSB FTW95LA263](https://openairdocs.org/ntsb/FTW95LA263.md): Grumman G-164A · Cheneyville, LA · Accident · No injuries · Limited investigation · Final report · Jun 27, 1995 · N8685H · Substantial damage
  > The pilot's failure to maintain adequate airspeed at a low altitude.
- [NTSB SEA94LA200](https://openairdocs.org/ntsb/SEA94LA200.md): Air Tractor AT-301 · Connell, WA · Accident · 1 fatal · Limited investigation · Final report · Jul 29, 1994 · N3649Y · Destroyed
  > The pilot's failure to maintain airspeed while conducting aerial application activities.
- [NTSB ATL94LA142](https://openairdocs.org/ntsb/ATL94LA142.md): Grumman G-164A · Samson, AL · Accident · No injuries · Limited investigation · Final report · Jul 18, 1994 · N4242X · Substantial damage
  > The failure of the aileron torque tube bolt from fatigue, which resulted in an inflight loss of aircraft control and collision with terrain.
- [NTSB FTW94LA211](https://openairdocs.org/ntsb/FTW94LA211.md): Grumman-Schweizer G-164A · Dumas, AR · Accident · No injuries · Limited investigation · Final report · Jun 25, 1994 · N4222P · Destroyed
  > The pilot's failure to establish the proper airspeed before beginning a turn after takeoff.
- [NTSB SEA94LA117](https://openairdocs.org/ntsb/SEA94LA117.md): Schweizer G-164B · Yuba City, CA · Accident · No injuries · Limited investigation · Final report · May 12, 1994 · N8214S · Substantial damage
  > An inadvertent stall/mush after takeoff. The over-weight loading of the aircraft was a factor.
- [NTSB NYC94LA009](https://openairdocs.org/ntsb/NYC94LA009.md): North American SNJ-2 · Skaneateles, NY · Accident · 1 fatal · Limited investigation · Final report · Oct 15, 1993 · N61563 · Substantial damage
  > The pilot's inadequate preflight preparation which failed to adequately secure cargo, resulting control interference. A factor was the overgross weight condition of the airplane.
- [NTSB LAX93LA365](https://openairdocs.org/ntsb/LAX93LA365.md): Snow 600-S2C · Surprise, AZ · Accident · Minor injuries · Limited investigation · Final report · Sep 22, 1993 · N1677S · Substantial damage
  > The pilot's improper inflight planning resulting in his airplane's encounter with wake turbulence.
- [NTSB LAX93LA189](https://openairdocs.org/ntsb/LAX93LA189.md): Schweizer G-164B · Sacramento, CA · Accident · Serious injuries · Limited investigation · Final report · Apr 27, 1993 · N8307K · Substantial damage
  > failure of the pilot in command to maintain adequate airspeed during a low altitude maneuvering turn which resulted in an inadvertent stall.
- [NTSB LAX93LA167](https://openairdocs.org/ntsb/LAX93LA167.md): Aero Commander ST-R · San Jose, CA · Accident · Serious injuries · Limited investigation · Final report · Apr 7, 1993 · N1783S · Destroyed
  > The pilot's failure to maintain adequate airspeed resulting in an inadvertent stall/spin.
- [NTSB LAX92LA126](https://openairdocs.org/ntsb/LAX92LA126.md): Grumman G-164B · Dixon, CA · Accident · No injuries · Limited investigation · Final report · Feb 25, 1992 · N3633C · Substantial damage
  > The pilot's premature lift-off. Contributing to the accident was the inadvertent stall/mush and the soft dirt airstrip.
- [NTSB MIA91LA033](https://openairdocs.org/ntsb/MIA91LA033.md): Air Tractor AT401 · Belle Glade, FL · Accident · Minor injuries · Limited investigation · Final report · Nov 26, 1990 · N1005J · Destroyed
  > The pilot failed to maintain airspeed, and stalled the airplane, resulting in a uncontrolled descent, and collision with the terrain.
- [NTSB ATL90FA158](https://openairdocs.org/ntsb/ATL90FA158.md): North American T-6G · Locust Grove, GA · Accident · 2 fatal · Field investigation · Final report · Aug 11, 1990 · N9871C · Destroyed
  > The pilot-in-command's failure to maintain aircraft control during maneuvering flight, allowing the airplane to stall without sufficient altitude for recovery.
- [NTSB CHI89DEP10](https://openairdocs.org/ntsb/CHI89DEP10.md): Air Tractor AT-301 · Plainfield, WI · Accident · 1 fatal · Final report · Aug 1, 1989 · N5044S · Destroyed
  > Failure of the pilot-in-command to maintain control of the aircraft while conducting aerial application maneuvers in close proximity to the terrain.
- [NTSB MKC88LA159](https://openairdocs.org/ntsb/MKC88LA159.md): Rockwell S-2R · Swifton, AR · Accident · No injuries · Limited investigation · Final report · Aug 15, 1988 · N8856Q · Substantial damage
  > Shortly after takeoff during an aerial application operation, the pilot said he was unable to establish a positive climb. After traveling about 1 mile, he elected to dump his dry fertilizer load. When he dumped the load, the increased aerodynamic drag caused…
- [NTSB ATL88LA190](https://openairdocs.org/ntsb/ATL88LA190.md): Sikorsky S-55C · Coaling, AL · Accident · Minor injuries · Limited investigation · Final report · Jun 7, 1988 · N883 · Substantial damage
  > The helo was approaching a helipad for landing after the last aerial application flight of the day when there was a pop and tail rotor control was lost. After several rotations about the vertical axis, the PIC landed the helo hard, collapsing the landing…
- [NTSB DEN87LA211](https://openairdocs.org/ntsb/DEN87LA211.md): North American AT-6A · Englewood, CO · Accident · No injuries · Limited investigation · Final report · Aug 7, 1987 · N90629 · Substantial damage
  > The plt does not possess a single engine airplane rating. The plt had a total of 18 hours in the AT-6A. Pilot was departing on a pleasure flt. Witnesses stated that the aircraft appeared to rotate prematurely, climbing at a slow airspeed and a high angle of…
- [NTSB LAX87LA295](https://openairdocs.org/ntsb/LAX87LA295.md): North American T-6G · Butte City, CA · Accident · Serious injuries · Limited investigation · Final report · Aug 6, 1987 · N8335H · Destroyed
  > During a local flight, a witness observed the acft making shallow right turns at aprx 100 ft AGL. The acft suddenly nosed down and collided with the terrain. Neither the plt nor the passenger remember what happened. Inspection of the engine revealed…
- [NTSB MIA87FA022](https://openairdocs.org/ntsb/MIA87FA022.md): Grumman G-164A · Orlando, FL · Accident · 1 fatal · Field investigation · Final report · Nov 5, 1986 · N711WW · Destroyed
  > While the plt was making a banner pick-up, witnesses saw the acft engage the banner & enter a climb. The plt released the banner, then the acft mushed into a partially built hangar, crashed & burned. The plt, who was on fire, exited the rgt canopy hatch.…
- [NTSB MKC86LA122](https://openairdocs.org/ntsb/MKC86LA122.md): Grumman G-164A · Bayard, NE · Accident · No injuries · Limited investigation · Final report · Aug 29, 1986 · N7364 · Substantial damage
  > The plt stated he encountered downdrafts near trees he was going to overfly while in a turnaround maneuver to spray crops. Instead of flying over the trees, the plt stated that the acft descended into the ground near the trees while in the turn. Wind…
- [NTSB SEA86LA179](https://openairdocs.org/ntsb/SEA86LA179.md): Ayres S2R · Nampa, ID · Accident · 1 fatal · Limited investigation · Final report · Jul 25, 1986 · N5511X · Destroyed
  > Ground personnel reported the acft entered procedure turnaround in an excessive attitude, appeared to stall, rolled inverted and struck the ground. No evidence found of pre-impact mechanical failure or malfunction.
- [NTSB MIA86LA084](https://openairdocs.org/ntsb/MIA86LA084.md): Schweizer G-164B · Homestead, FL · Accident · No injuries · Limited investigation · Final report · Feb 24, 1986 · N3629J · Substantial damage
  > The plt stated that she had completed one spray pass with one ton of fertilizer aboard & pulled up in a turn to about 200 ft. at that time the acft 'hit a pocket of dead air.' The acft nosed down and although the plt dumped the chemical load, she could not…
- [NTSB ATL85LA269](https://openairdocs.org/ntsb/ATL85LA269.md): Grumman G-164A · Tunica, MS · Accident · No injuries · Limited investigation · Final report · Sep 6, 1985 · N9893 · Substantial damage
  > The plt stated that during aerial application maneuver he allowed the airspeed to get too low and the acft settled into a soy bean field. The left wing contacted the crop and the acft cartwheeled.
- [NTSB LAX85FA241](https://openairdocs.org/ntsb/LAX85FA241.md): North American AT6A · Lemoore, CA · Accident · 1 fatal · Field investigation · Final report · May 5, 1985 · N144KM · Destroyed
  > After dropping a parachutist to open an air show the plt's takeoff was delayed by a blown tire on a landing airplane and difficulties with filling his smoke oil tank. After completing about two thirds of his aerobatic routine the plt recovered from a reverse…
- [NTSB MKC85LA068](https://openairdocs.org/ntsb/MKC85LA068.md): Aero Commander S2R · Bradley, AR · Accident · No injuries · Limited investigation · Final report · Mar 6, 1985 · N8909Q · Substantial damage
  > The plt said that after liftoff the acft encountered a gust of wind and the acft swerved off the airstrip into rough terrain.
- [NTSB MKC84LA148](https://openairdocs.org/ntsb/MKC84LA148.md): Grumman G-164B · Humnoke, AR · Accident · Serious injuries · Limited investigation · Final report · May 27, 1984 · N6729K · Destroyed
  > Plt stated he noticed a vibration in the acft on two flts prior to the accident flt. Plt felt forward pressure on the stick so he attempted to trim the acft. The acft nosed forward colliding with the terrain. Inspection disclosed no preimpact…

Next page: https://openairdocs.org/ntsb.md?engine=52016&occurrence=250&page=2

## 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 ('52016')
    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=52016&occurrence=250

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