# NTSB investigations: Pratt & Whitney R1340 series: In flight collision with terrain/water

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 · 70 cases

## Latest cases

- [NTSB LAX08CA034](https://openairdocs.org/ntsb/LAX08CA034.md): Air Tractor AT-401 · Soledad, CA · Accident · Serious injuries · Data collection · Final report · Dec 6, 2007 · N6024M · Destroyed
  > The pilot's failure to maintain an adequate clearance from mountainous terrain while maneuvering during an aerial application mission. Contributing to the accident was the pilot's diverted attention inside the cockpit.
- [NTSB NYC07LA219](https://openairdocs.org/ntsb/NYC07LA219.md): North American SNJ-2 · Virginia Beach, VA · Accident · 1 fatal · Limited investigation · Final report · Sep 7, 2007 · N52033 · Destroyed
  > The pilot's inability to maintain control of the airplane due to physiological incapacitation. Contributing to the accident was the failure of the Federal Aviation Administration to deny or restrict the pilot's medical certification, and the pilot's improper…
- [NTSB DFW07LA148](https://openairdocs.org/ntsb/DFW07LA148.md): Air Tractor 301 · Lueders, TX · Accident · Serious injuries · Limited investigation · Final report · Jul 3, 2007 · N7305E · Destroyed
  > The pilot's failure to maintain airspeed which resulted in an inadvertent stall and subsequent impact with terrain.
- [NTSB CHI07LA162](https://openairdocs.org/ntsb/CHI07LA162.md): Aero Commander S2R · Watford City, ND · Accident · 1 fatal · Limited investigation · Final report · Jun 5, 2007 · N8835Q · Destroyed
  > The agricultural pilot's failure to maintain clearance from the terrain while maneuvering to avoid power lines. The power lines were a contributing factor in the accident.
- [NTSB DFW07CA081](https://openairdocs.org/ntsb/DFW07CA081.md): Gulfstream-Schweizer G-164B · Arcola, MS · Accident · No injuries · Data collection · Final report · Feb 23, 2007 · N8063K · Substantial damage
  > The pilot's failure to maintain clearance from trees while maneuvering during aerial application.
- [NTSB ANC06LA103](https://openairdocs.org/ntsb/ANC06LA103.md): de Havilland DHC-3 · Juneau, AK · Accident · Serious injuries · Limited investigation · Final report · Jul 31, 2006 · N93356 · Substantial damage
  > The pilot's failure to maintain altitude/clearance during approach, which resulted in the airplane impacting the surface of the water. Factors associated with the accident were the flat-light and glassy water conditions, which affected the pilot's ability to…
- [NTSB SEA06CA145](https://openairdocs.org/ntsb/SEA06CA145.md): Grumman-Schweizer G-164B · Lamont, WA · Accident · Minor injuries · Data collection · Final report · Jul 23, 2006 · N8376K · Substantial damage
  > The pilot's failure to maintain terrain clearance while maneuvering.
- [NTSB ANC06CA039](https://openairdocs.org/ntsb/ANC06CA039.md): Grumman-Schweizer G-164A · Dixon, CA · Accident · No injuries · Data collection · Final report · Mar 30, 2006 · N5397 · Substantial damage
  > The pilot's failure to attain altitude/clearance during takeoff/initial climb, which resulted in an in-flight collision with terrain. Factors associated with the accident were the pilot's inadequate evaluation of the weather, and unfavorable winds.
- [NTSB CHI05LA188](https://openairdocs.org/ntsb/CHI05LA188.md): Air Tractor AT-301 · Langdon, ND · Accident · 1 fatal · Limited investigation · Final report · Jul 15, 2005 · N3159N · Destroyed
  > The pilot's failure to maintain clearance from the terrain while attempting an abrupt turning maneuver at a low altitude.
- [NTSB CHI02LA221](https://openairdocs.org/ntsb/CHI02LA221.md): Air Tractor 301 · Ulen, MN · Accident · Minor injuries · Limited investigation · Final report · Jul 26, 2002 · N3167P · Substantial damage
  > The pilot not performing an aborted takeoff. A factor was the soybean crop.
- [NTSB CHI02LA206](https://openairdocs.org/ntsb/CHI02LA206.md): Air Tractor AT-401B · Pratt, KS · Accident · No injuries · Limited investigation · Final report · Jul 22, 2002 · N60747 · Substantial damage
  > The pilot's failure to maintain terrain clearance. A factor was low altitude flight.
- [NTSB CHI01LA191](https://openairdocs.org/ntsb/CHI01LA191.md): Air Tractor AT-301 · Grygla, MN · Accident · No injuries · Limited investigation · Final report · Jun 30, 2001 · N3656B · Substantial damage
  > The pilot not maintaining altitude/clearance from terrain on takeoff. A factor was the high density altitude.
- [NTSB LAX01LA228](https://openairdocs.org/ntsb/LAX01LA228.md): Schweizer G-164B · Meridian, CA · Accident · No injuries · Limited investigation · Final report · Jun 27, 2001 · N2236F · Substantial damage
  > The pilot's misjudged and inadequate altitude while maneuvering during an aerial application flight.
- [NTSB FTW01LA119](https://openairdocs.org/ntsb/FTW01LA119.md): Grumman-Schweizer G-164B · Rosharon, TX · Accident · No injuries · Limited investigation · Final report · May 15, 2001 · N6778K · Substantial damage
  > the pilot's failure to maintain aircraft control while maneuvering. Factors were the weather conditions and the muddy terrain.
- [NTSB FTW00LA212](https://openairdocs.org/ntsb/FTW00LA212.md): Air Tractor AT-401 · Panhandle, TX · Accident · 1 fatal · Limited investigation · Final report · Jul 18, 2000 · N6055W · Destroyed
  > The pilot's failure to maintain airspeed, which resulted in a stall.
- [NTSB DEN99LA155](https://openairdocs.org/ntsb/DEN99LA155.md): North American SNJ-4 (AT-6) · Mack, CO · Accident · Minor injuries · Limited investigation · Final report · Aug 28, 1999 · N7011C · Substantial damage
  > The pilot misjudging his distance and altitude from the runway. A factor was the tall crops.
- [NTSB MIA99LA212](https://openairdocs.org/ntsb/MIA99LA212.md): Air Tractor AT-401 · Moore Haven, FL · Accident · No injuries · Limited investigation · Final report · Aug 2, 1999 · N15585 · Substantial damage
  > The pilot exceeding the gross takeoff weight which reduced the climb capability and subsequent in-flight collision with terrain. Contributing to the accident was the high temperature and the pilot's failure to use aircraft performance data for the weather…
- [NTSB CHI99LA258](https://openairdocs.org/ntsb/CHI99LA258.md): Air Tractor 401B · Mccanna, ND · Accident · Serious injuries · Limited investigation · Final report · Jul 24, 1999 · N6006A · Substantial damage
  > the inadvertent stall by the pilot.
- [NTSB CHI99LA215](https://openairdocs.org/ntsb/CHI99LA215.md): Grumman-Schweizer G-164B · Page, ND · Accident · No injuries · Limited investigation · Final report · Jul 3, 1999 · N6633K · Substantial damage
  > the pilot's failure to compensate for the wind conditions. Factors were the sudden windshift and the crops.
- [NTSB LAX98LA255](https://openairdocs.org/ntsb/LAX98LA255.md): Grumman G-164A · Nelson, CA · Accident · Serious injuries · Limited investigation · Final report · Aug 3, 1998 · N8388 · Destroyed
  > The pilot's failure to maintain an adequate ground clearance altitude while applying chemicals to a rice field.
- [NTSB FTW97FA229](https://openairdocs.org/ntsb/FTW97FA229.md): Air Tractor AT-301 · Las Animas, CO · Accident · 1 fatal · Field investigation · Final report · Jun 19, 1997 · N7308E · Destroyed
  > in-flight collision with terrain, while maneuvering, for undetermined reason(s).
- [NTSB LAX97LA212](https://openairdocs.org/ntsb/LAX97LA212.md): Schweizer G-164B · Rio Linda, CA · Accident · Serious injuries · Limited investigation · Final report · Jun 16, 1997 · N3631G · Substantial damage
  > the pilot's inadequate preflight planning/preparation by failing to ensure that sufficient airspeed would be obtained and/or maintained to remain clear of obstacles at the departure end of the runway. The obstacles (power lines & poles) were a related factor.
- [NTSB SEA97LA099](https://openairdocs.org/ntsb/SEA97LA099.md): Grumman G-164A · Rosalia, WA · Accident · 1 fatal · Limited investigation · Final report · May 6, 1997 · N7926 · Destroyed
  > The pilot-in-command's failure to maintain clearance with terrain. Factors contributing to the accident were, hilly terrain conditions and impairment due to recent use of marihuana.
- [NTSB FTW96FA200](https://openairdocs.org/ntsb/FTW96FA200.md): North American Harvard MK II · Lafayette, LA · Accident · 1 fatal · Field investigation · Final report · May 4, 1996 · N2755Z · Destroyed
  > failure of the pilot to maintain adequate airspeed and/or altitude, while performing aerobatic flight.
- [NTSB FTW96LA070](https://openairdocs.org/ntsb/FTW96LA070.md): Grumman G-164B · Pawnee, OK · Accident · No injuries · Limited investigation · Final report · Dec 13, 1995 · N6642K · Substantial damage
  > The pilot's failure to maintain adequate clearance from the terrain.
- [NTSB LAX96LA012](https://openairdocs.org/ntsb/LAX96LA012.md): Grumman G-164B · Lost Hills, CA · Accident · Minor injuries · Limited investigation · Final report · Oct 16, 1995 · N8247K · Destroyed
  > the pilot misjudged the aircraft's altitude.
- [NTSB CHI95LA219](https://openairdocs.org/ntsb/CHI95LA219.md): Air Tractor AT-301 · Grygla, MN · Accident · No injuries · Limited investigation · Final report · Jul 12, 1995 · N8673S · Substantial damage
  > The pilot's failure to maintain altitude and/or clearance at the beginning of the spray run. A factor was turbulence due to the different Air temperatures of adjoining terrain.
- [NTSB FTW94LA174](https://openairdocs.org/ntsb/FTW94LA174.md): Grumman G-164A · Stuttgart, AR · Accident · No injuries · Limited investigation · Final report · May 20, 1994 · N9678 · Substantial damage
  > Was the pilots failure to maintain terrain clearance.
- [NTSB ATL94LA104](https://openairdocs.org/ntsb/ATL94LA104.md): Grumman G-164B · Memphis, TN · Accident · No injuries · Limited investigation · Final report · May 20, 1994 · N6816Q · Substantial damage
  > The pilot's failure to maintain clearance from the earthen dike during the swath run.
- [NTSB CHI94LA106](https://openairdocs.org/ntsb/CHI94LA106.md): Grumman G-164A · Sublette, KS · Accident · No injuries · Limited investigation · Final report · Mar 15, 1994 · N9686 · Substantial damage
  > the commercial pilot's failure to maintain clearance from terrain. Related factors are sun glare and rising terrain.
- [NTSB LAX94LA099](https://openairdocs.org/ntsb/LAX94LA099.md): Grumman G-164A · Davis, CA · Accident · Serious injuries · Limited investigation · Final report · Jan 20, 1994 · N8649H · Destroyed
  > was that the pilot misjudged the airplane's altitude during the swath run.
- [NTSB FTW93LA156](https://openairdocs.org/ntsb/FTW93LA156.md): Grumman G-164A · Trumann, AR · Accident · No injuries · Limited investigation · Final report · May 15, 1993 · N6556 · Substantial damage
  > Pilot's failure to maintain terrain clearance. A factor was the diverted attention of the pilot.
- [NTSB ATL92LA124](https://openairdocs.org/ntsb/ATL92LA124.md): Grumman G-164A · Ft. Gaines, GA · Accident · No injuries · Limited investigation · Final report · Jun 14, 1992 · N7357 · Substantial damage
  > The pilot's inadequate preflight planning/preparation.
- [NTSB FTW92LA143](https://openairdocs.org/ntsb/FTW92LA143.md): Grumman G-164B · Walnut Ridge, AR · Accident · Minor injuries · Limited investigation · Final report · May 23, 1992 · N8380K · Substantial damage
  > The pilot's failure to maintain adequate terrain clearance. A factor was the loss of power as result of the uncoupling of the engine and the propeller.
- [NTSB FTW92LA118](https://openairdocs.org/ntsb/FTW92LA118.md): Air Tractor AT-301 · Almyra, AR · Accident · No injuries · Limited investigation · Final report · Apr 22, 1992 · N4430S · Substantial damage
  > The pilot's improper judgement of the descent rate and his inadequate pull up at the bottom.
- [NTSB LAX92LA110](https://openairdocs.org/ntsb/LAX92LA110.md): Grumman G-164A · Greenfield, CA · Accident · No injuries · Limited investigation · Final report · Feb 5, 1992 · N8507H · Destroyed
  > The pilot's failure to maintain adequate altitude during an intentionally performed low altitude flight in mountainous terrain. Contributing factors related to the pilot's visual perception of the canyon area because of changes in the ambient lighting…
- [NTSB CHI91DTG07](https://openairdocs.org/ntsb/CHI91DTG07.md): Ayres S2R · Drayton, ND · Accident · No injuries · Final report · Aug 7, 1991 · N4010H · Substantial damage
  > Misjudged clearance by the pilot. A factor related to the accident is overconfidence in personal ability.
- [NTSB FTW91DPG18](https://openairdocs.org/ntsb/FTW91DPG18.md): Grumman G-164A · Dewitt, AR · Accident · No injuries · Final report · Jul 31, 1991 · N5076 · Substantial damage
  > The pilot's failure to maintain proper glidepath. A factor was the berm at the approach end of the runway.
- [NTSB LAX91LA301](https://openairdocs.org/ntsb/LAX91LA301.md): Grumman G-164B · Eloy, AZ · Accident · No injuries · Limited investigation · Final report · Jul 9, 1991 · N6633K · Substantial damage
  > The failure of the pilot to maintain the terrain clearance of the aircraft while maneuvering for a potential emergency landing on a moonless dark night.
- [NTSB ANC91LA061](https://openairdocs.org/ntsb/ANC91LA061.md): Rockwell S-2R · Larsen Bay, AK · Accident · 1 fatal · Limited investigation · Final report · May 25, 1991 · N4851X · Destroyed
  > The pilot's decision to continue VFR into IMC conditions and failure to maintain proper altitude. Contributing to the accident was the low ceiling and fog.
- [NTSB FTW91DPG06](https://openairdocs.org/ntsb/FTW91DPG06.md): Grumman G-164A · Gillett, AR · Accident · No injuries · Final report · May 14, 1991 · N9785 · Substantial damage
  > The windshiled becoming obscured by aerial application spray and the resultant limited vision from the cockpit.
- [NTSB FTW90DRA09](https://openairdocs.org/ntsb/FTW90DRA09.md): Grumman G-164A · Altair, TX · Accident · No injuries · Final report · Sep 14, 1990 · N6566 · Destroyed
  > The pilot's use of improper terrain for takeoff.
- [NTSB FTW90DPG04](https://openairdocs.org/ntsb/FTW90DPG04.md): Air Tractor 301A · Foreman, AR · Accident · No injuries · Final report · Jul 30, 1990 · N31631 · Destroyed
  > The pilot's inadvertent stall/mush.
- [NTSB FTW90DRG04](https://openairdocs.org/ntsb/FTW90DRG04.md): Air Tractor AT-301 · Mission, TX · Accident · No injuries · Final report · Jul 2, 1990 · N3653W · Substantial damage
  > The pilot's failure to maintain proper clearance above the crops he was spraying. A factor was the tree induced mechanical turbulence encountered during the descending turn.
- [NTSB SEA90LA105](https://openairdocs.org/ntsb/SEA90LA105.md): Air Tractor AT-401 · Jerome, ID · Accident · No injuries · Limited investigation · Final report · Jun 21, 1990 · N4530N · Substantial damage
  > The pilot did not maintain a proper altitude while maneuvering to reverse direction.
- [NTSB MKC89LA190](https://openairdocs.org/ntsb/MKC89LA190.md): Air Tractor AT-401 · Wabbaseka, AR · Accident · No injuries · Limited investigation · Final report · Aug 26, 1989 · N10103 · Substantial damage
  > Improper planning/decision by the pilot which resulted in his failure to maintain clearance from the tall vegetation (grass). The tall vegetation & high density altitude were considered to be contributing factors.
- [NTSB MIA89LA203](https://openairdocs.org/ntsb/MIA89LA203.md): Grumman G-164A · Schlater, MS · Accident · No injuries · Limited investigation · Final report · Jul 19, 1989 · N4579 · Substantial damage
  > Inadequate preflight planning/preparation by the pilot which resulted in the selection of the wrong runway. The tailwindand dirt bank were considered to be contributing factors.
- [NTSB ATL88DKG14](https://openairdocs.org/ntsb/ATL88DKG14.md): Ayres Thrush S2R · Ochlocknee, GA · Accident · Minor injuries · Final report · Aug 26, 1988 · N4006P · Substantial damage
  > Shortly after takeoff the pilot allowed the nose to drop resulting in a collision with the ground. The airplane hit the ground, right wing first, and traveled about 500 feet before stopping. The pilot had been spraying methyl parathion all day and stated he…
- [NTSB SEA88LA135](https://openairdocs.org/ntsb/SEA88LA135.md): Schweizer G164A · Colfax, WA · Accident · No injuries · Limited investigation · Final report · Jul 21, 1988 · N8974H · Substantial damage
  > On departure with a load of chemical, ag plt attempted to outclimb rising terrain ahead. The aircraft collided with terrain in a stall/mush.
- [NTSB DEN87LA192](https://openairdocs.org/ntsb/DEN87LA192.md): Grumman G-164A · Romeo, CO · Accident · No injuries · Limited investigation · Final report · Jul 22, 1987 · N5398 · Substantial damage
  > The plt reports that the acft encountered a downdraft during the turn around following a swath run. The aircraft began to settle and collided with the ground, bounced, hit a second time and nosed over. The aircraft was loaded with 280 gals of amine and 70…

Next page: https://openairdocs.org/ntsb.md?engine=52016&occurrence=230&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" = 230))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52016&occurrence=230

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