# NTSB investigations: Pratt & Whitney R1340 series, WA

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 · 59 cases

## Latest cases

- [NTSB WPR15LA186](https://openairdocs.org/ntsb/WPR15LA186.md): Rockwell International S 2R · Washtucna, WA · Accident · Serious injuries · Limited investigation · Final report · Jun 16, 2015 · N8420V · Substantial damage
  > The pilot's failure to maintain directional control while landing with a quartering tailwind.
- [NTSB WPR15LA023](https://openairdocs.org/ntsb/WPR15LA023.md): Air Tractor AT 301 · Basin City, WA · Accident · No injuries · Limited investigation · Final report · Oct 27, 2014 · N8878S · Substantial damage
  > Maintenance personnel’s and the airplane owner’s failure to inspect the engine for cracks in the cylinders as required by an airworthiness directive, which resulted in the loss of engine power during low-altitude maneuvering flight.
- [NTSB WPR12LA356](https://openairdocs.org/ntsb/WPR12LA356.md): Rockwell S2R · Royal City, WA · Accident · Minor injuries · Limited investigation · Final report · Aug 14, 2012 · N8468V · Substantial damage
  > The loss of engine power due to the separation of the No. 2 cylinder exhaust rocker boss housing, which prevented the exhaust valve from opening.
- [NTSB WPR12CA229](https://openairdocs.org/ntsb/WPR12CA229.md): Rockwell International S-2R · Royal City, WA · Accident · No injuries · Data collection · Final report · May 24, 2012 · N8468V · Substantial damage
  > The pilot’s failure to maintain adequate clearance from an object during an aerial application, which resulted in damage to the landing gear and led to the airplane ground looping during the subsequent landing.
- [NTSB WPR12CA026](https://openairdocs.org/ntsb/WPR12CA026.md): Ayres S2R-600 · Kahlotus, WA · Accident · Serious injuries · Data collection · Final report · Nov 2, 2011 · N1206S · Substantial damage
  > The pilot’s failure to maintain clearance from the ground due to his distraction with programming a global positioning system receiver.
- [NTSB WPR11CA261](https://openairdocs.org/ntsb/WPR11CA261.md): Grumman Acft ENG Cor-Schweizer G-164B · Pullman, WA · Accident · Minor injuries · Data collection · Final report · Jun 15, 2011 · N8376K · Substantial damage
  > The pilot's failure to maintain clearance from power lines while maneuvering.
- [NTSB WPR11CA252](https://openairdocs.org/ntsb/WPR11CA252.md): Air Tractor AT-502B · Odessa, WA · Accident · No injuries · Data collection · Final report · Jun 7, 2011 · N6072X · 2 aircraft · Minor damage
  > The pilot's failure to maintain clearance from the other aircraft.
- [NTSB WPR11CA229](https://openairdocs.org/ntsb/WPR11CA229.md): Rockwell International S-2R · Kahlotus, WA · Accident · No injuries · Data collection · Final report · May 18, 2011 · N4996X · Substantial damage
  > The pilot's failure to maintain directional control during takeoff.
- [NTSB WPR10LA365](https://openairdocs.org/ntsb/WPR10LA365.md): Schweizer G-164B · Prescott, WA · Accident · No injuries · Limited investigation · Final report · Jul 21, 2010 · N7502A · Substantial damage
  > The airplane’s inability to maintain a positive rate of climb after takeoff for undetermined reasons. Contributing to the accident was the pilot’s delayed reaction to initiate an emergency release of the spray mixture.
- [NTSB WPR10CA332](https://openairdocs.org/ntsb/WPR10CA332.md): Air Tractor AT-301 · Garfield, WA · Accident · No injuries · Data collection · Final report · Jul 6, 2010 · N8878S · Substantial damage
  > A loss of engine power due to fuel exhaustion.
- [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 SEA05LA192](https://openairdocs.org/ntsb/SEA05LA192.md): North American AT-6D · Chehalis, WA · Accident · No injuries · Limited investigation · Final report · Sep 9, 2005 · N3617F · Substantial damage
  > The pilot's failure to follow the checklist to switch to the fullest fuel tank prior to departure which resulted in fuel starvation and a loss of engine power during the initial takeoff climb. Subsequently, the aircraft landed hard damaging the landing gear…
- [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 SEA04CA059](https://openairdocs.org/ntsb/SEA04CA059.md): Rockwell S-2R · Mattawa, WA · Accident · No injuries · Data collection · Final report · Mar 26, 2004 · N8420V · Substantial damage
  > Compensation for wind conditions not maintained. Factors include a tailwind and a rock pile adjacent to the runway.
- [NTSB SEA03LA101](https://openairdocs.org/ntsb/SEA03LA101.md): Rockwell International S-2R · Royal City, WA · Accident · No injuries · Limited investigation · Final report · Jun 12, 2003 · N8468V · Substantial damage
  > The pilot's failure to maintain clearance from a 20 foot high post while applying chemicals to an agricultural field, which resulted in impact damage to the right main landing gear, and ultimately to a collapse of the subject gear during the subsequent…
- [NTSB SEA02LA166](https://openairdocs.org/ntsb/SEA02LA166.md): Aero Commander S2R Thrush · Connell, WA · Accident · No injuries · Limited investigation · Final report · Aug 21, 2002 · N8870Q · Substantial damage
  > The pilot's failure to adequately compensate for wind conditions and his failure to maintain directional control. Factors include rough uneven terrain.
- [NTSB SEA01LA146](https://openairdocs.org/ntsb/SEA01LA146.md): Rockwell S-2R · Latah, WA · Accident · No injuries · Limited investigation · Final report · Aug 4, 2001 · N4237X · Substantial damage
  > the failure of a cylinder head exhaust rocker shaft boss while the aircraft was performing aerial application. Factors include soft terrain and a drop-off in the field where the emergency landing took place.
- [NTSB SEA01LA055](https://openairdocs.org/ntsb/SEA01LA055.md): Grumman-Schweizer G-164A · Waitsburg, WA · Accident · Minor injuries · Limited investigation · Final report · Feb 28, 2001 · N48651 · Destroyed
  > The pilot's failure to maintain clearance from the power lines during a pull-up, resulting in an in-flight collision with the lines, loss of control and subsequent in-flight collision with terrain. Contributing factors were the power lines and the pilot's…
- [NTSB SEA00LA082](https://openairdocs.org/ntsb/SEA00LA082.md): Gulfstream-Schweizer G-164B · Ephrata, WA · Accident · No injuries · Limited investigation · Final report · May 4, 2000 · N8130K · Substantial damage
  > Loss of engine power due to failure of the number three cylinder exhaust valve push rod. Soft terrain encountered during the landing roll-out was a factor.
- [NTSB SEA00LA059](https://openairdocs.org/ntsb/SEA00LA059.md): Aero Commander S2R · Odessa, WA · Accident · No injuries · Limited investigation · Final report · Mar 31, 2000 · N3662X · Substantial damage
  > Disintegration of a lining of the right brake and subsequent lodging of brake lining debris between the brake housing and brake disc, resulting in seizure of the right brake. A factor was that directional control was not possible.
- [NTSB SEA99LA074](https://openairdocs.org/ntsb/SEA99LA074.md): Grumman-Schweizer G-164A · Prescott, WA · Accident · No injuries · Limited investigation · Final report · May 27, 1999 · N9970 · Substantial damage
  > The pilot-in-command's failure to maintain directional control during the takeoff roll and overloading of the right landing gear strut. Contributing factors were the soft takeoff surface, confined (narrow) takeoff surface, and high vegetation.
- [NTSB SEA98FA164](https://openairdocs.org/ntsb/SEA98FA164.md): North American SNJ-5C · Winlock, WA · Accident · 2 fatal · Field investigation · Final report · Aug 14, 1998 · N766CA · Destroyed
  > The pilot's failure to maintain adequate altitude during attempted low-level aerobatics.
- [NTSB SEA98LA125](https://openairdocs.org/ntsb/SEA98LA125.md): Rockwell S-2R · Pasco, WA · Accident · No injuries · Limited investigation · Final report · Jul 9, 1998 · N4996X · Substantial damage
  > Separation of the throttle linkage which resulted in the loss of power. Factors include worn throttle linkage parts and the furrows in the plowed field which was the available field for the forced landing.
- [NTSB SEA98LA106](https://openairdocs.org/ntsb/SEA98LA106.md): Schweizer G-164B · Oakdale, WA · Accident · No injuries · Limited investigation · Final report · Jun 27, 1998 · N7502C · Substantial damage
  > A fatigue failure of the number three cylinder exhaust rocker box assembly, compromising the ability of the exhaust valve to operate. Factors include a ditch at the end of the runway.
- [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 SEA96LA200](https://openairdocs.org/ntsb/SEA96LA200.md): Grumman-Schweizer G-164B · Waitsburg, WA · Accident · Minor injuries · Limited investigation · Final report · Aug 22, 1996 · N7501Q · Substantial damage
  > the pilot's inadequate compensation for wind conditions and failure to maintain control of the airplane after encountering a whirlwind during the landing.
- [NTSB SEA95LA143](https://openairdocs.org/ntsb/SEA95LA143.md): Aero Commander S2R · Odessa, WA · Accident · No injuries · Limited investigation · Final report · Jul 6, 1995 · N3662X · Substantial damage
  > Loss of engine power due to a cracked cylinder.
- [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 SEA94LA131](https://openairdocs.org/ntsb/SEA94LA131.md): Rockwell S-2R · Touchet, WA · Accident · Minor injuries · Limited investigation · Final report · May 28, 1994 · N5642X · Substantial damage
  > The pilot's inadequate compensation for wind conditions. The wind gusts were a factor.
- [NTSB SEA94LA116](https://openairdocs.org/ntsb/SEA94LA116.md): Aero Commander S2R · Dayton, WA · Accident · No injuries · Limited investigation · Final report · May 7, 1994 · N5646X · Substantial damage
  > Total failure of the connecting rod.
- [NTSB SEA93LA168](https://openairdocs.org/ntsb/SEA93LA168.md): Cessna A150L · Ephrata, WA · Accident · Serious injuries · Limited investigation · Final report · Aug 1, 1993 · N5958J · 2 aircraft · Destroyed
  > Inadequate visual lookout by both pilots, resulting in their failure to see-and-avoid each other's aircraft. A factor related to the accident was: failure of the Grumman 164B pilot to adequately monitor the UNICOM frequency.
- [NTSB SEA93LA085](https://openairdocs.org/ntsb/SEA93LA085.md): Schweizer G-164A · Walla Walla, WA · Accident · Minor injuries · Limited investigation · Final report · Mar 30, 1993 · N8734H · Destroyed
  > A loss of engine power for undetermined reasons. The lack of a suitable landing area was a factor.
- [NTSB SEA93LA078](https://openairdocs.org/ntsb/SEA93LA078.md): Schweizer G-164B-600 · Quincy, WA · Accident · No injuries · Limited investigation · Final report · Mar 18, 1993 · N7503L · Substantial damage
  > Unsuitable terrain encountered during a forced landing after an engine cylinder assembly had separated. Factors include a snowbank.
- [NTSB SEA92LA125](https://openairdocs.org/ntsb/SEA92LA125.md): Grumman G-164A · Coulee City, WA · Accident · No injuries · Limited investigation · Final report · Jun 11, 1992 · N8938H · Substantial damage
  > A loss of engine power for undetermined reasons. Factors include soft terrain.
- [NTSB SEA92LA091](https://openairdocs.org/ntsb/SEA92LA091.md): Rockwell S2R · St. John, WA · Accident · No injuries · Limited investigation · Final report · May 5, 1992 · N8803Q · Substantial damage
  > The separation of the number 1 cylinder and remedial action by the PIC not possible. A factor contributing to the accident was: rough/uneven terrain.
- [NTSB SEA91LA136](https://openairdocs.org/ntsb/SEA91LA136.md): Schweizer G-164B · Wilson Creek, WA · Accident · No injuries · Limited investigation · Final report · May 27, 1991 · N8407K · Substantial damage
  > The loss of engine power in flight due to improper overhaul of the carburetor float assembly fulcrum screw, shutting off fuel flow to the engine.
- [NTSB SEA90LA140](https://openairdocs.org/ntsb/SEA90LA140.md): Rockwell S2R · Royal City, WA · Accident · No injuries · Limited investigation · Final report · Jul 15, 1990 · N8468V · Substantial damage
  > The pilot's failure to ensure an adequate supply of fuel, which resulted in fuel exhaustion.
- [NTSB SEA90LA103](https://openairdocs.org/ntsb/SEA90LA103.md): Grumman G-164A · Tekoa, WA · Accident · No injuries · Limited investigation · Final report · Jun 21, 1990 · N29SK · Destroyed
  > Failure of the pilot to maintain clearance between the airplane and tall grass adjacent to the gravel strip.
- [NTSB SEA89LA121](https://openairdocs.org/ntsb/SEA89LA121.md): Grumman-Schweizer G-164A · Colfax, WA · Accident · No injuries · Limited investigation · Final report · Jun 24, 1989 · N8974H · Substantial damage
  > Improper installation of the cylinder assembly. The terrain was not suitable for a successful forced landing.
- [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 SEA88LA090](https://openairdocs.org/ntsb/SEA88LA090.md): Ayres S2R Thrush · Lind, WA · Accident · No injuries · Limited investigation · Final report · May 10, 1988 · N5660X · Substantial damage
  > During an aerial application maneuver, a total loss of power occurred due to the number nine cylinder failing. A restart was attempted, but was unsuccessful. The pilot made a forced landing onto a very soft sandy field, where the aircraft nosed over inverted…
- [NTSB SEA87LA151](https://openairdocs.org/ntsb/SEA87LA151.md): Rockwell S-2R · Plymouth, WA · Accident · No injuries · Limited investigation · Final report · Jul 31, 1987 · N4229X · Substantial damage
  > Drg a swath run, a total loss of power occurred when the eng's #9 cylinder failed. The plt made a forced lndg in a soft potato field, but the acft nosed over after it slowed to about 20 KTS.
- [NTSB SEA87LA103](https://openairdocs.org/ntsb/SEA87LA103.md): Ayres S2R · Walla Walla, WA · Accident · No injuries · Limited investigation · Final report · May 29, 1987 · N3693X · Substantial damage
  > During takeoff run the right main gear collapsed. The right wing dropped and the aircraft spun to the right. The plt discovered that the right main gear failed at the weld. The pilot, who is also an a & p mechanic, stated that this was an original weld from…
- [NTSB SEA86LA081](https://openairdocs.org/ntsb/SEA86LA081.md): Air Tractor 301 · Prescott, WA · Accident · No injuries · Limited investigation · Final report · Mar 21, 1986 · N5097S · Substantial damage
  > The brake locking system engaged in flight causing the right brake to lock. The aircraft nosed over on landing where a small fire erupted from fuel spillage onto the hot engine.
- [NTSB SEA82DA162](https://openairdocs.org/ntsb/SEA82DA162.md): North American AT-6C · Bellingham, WA · Accident · No injuries · Final report · Aug 18, 1982 · N97TR · Substantial damage
  > While the student pilot was on a cross-country flight, he landed at Bellingham, WA with a 4 knot crosswind. During the landing sequence, the aircraft touched down hard and the pilot lost directional control. He reported that the left gear failed when the…
- [NTSB SEA82DA083](https://openairdocs.org/ntsb/SEA82DA083.md): Grumman G-164A · Dayton, WA · Accident · Minor injuries · Final report · Jun 9, 1982 · N7365 · Destroyed
  > The pilot had just returned to the area after picking up a load of di-syston. Another ag aircraft had been spraying in an adjacent field. The pilot circled and looked for the other aircraft, but did not see it. He stated that he checked the smoke to determine…
- [NTSB SEA82DA045](https://openairdocs.org/ntsb/SEA82DA045.md): Rockwell Intl. S-2R · Eureka, WA · Accident · No injuries · Final report · Apr 5, 1982 · N8471V · Substantial damage
  > After spraying most of his load, the pilot made a dry pass and dropped a smoke flare. The flare was dropped to check the drift of the air relative to a susceptible crop east of the field being sprayed. After dropping the flare, the pilot made a 180 degree…
- [NTSB SEA81DYP19](https://openairdocs.org/ntsb/SEA81DYP19.md): Air Tractor AT-301 · Prescott, WA · Accident · No injuries · Closed · May 28, 1981 · N8827S · Substantial damage
- [NTSB SEA80FYP09](https://openairdocs.org/ntsb/SEA80FYP09.md): Snow 600S2C · Washtucna, WA · Accident · No injuries · Closed · Jan 18, 1980 · N1626S · Substantial damage
- [NTSB SEA76DYG02](https://openairdocs.org/ntsb/SEA76DYG02.md): Snow S2C · Oakesdale, WA · Accident · No injuries · Closed · Jul 8, 1975 · N16691 · Substantial damage

Next page: https://openairdocs.org/ntsb.md?engine=52016&state=WA&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."eventStateOrRegion" = 'WA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52016'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

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

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