# NTSB investigations: Pratt & Whitney R1340 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 11 of 34 · 1,656 cases

## Cases, newest first

- [NTSB CHI99LA274](https://openairdocs.org/ntsb/CHI99LA274.md): North American AT-6G · Harlan, IA · Accident · No injuries · Limited investigation · Final report · Aug 1, 1999 · N98FP · Substantial damage
  > the failure of the pilot to maintain directional control of the aircraft during landing. Factors to the accident were the crosswind, the failure of the pilot to maintain compensation for the crosswind condition on approach, and the inadvertent ground loop…
- [NTSB CHI99LA268](https://openairdocs.org/ntsb/CHI99LA268.md): Air Tractor AT-401B · Edelstein, IL · Accident · Serious injuries · Limited investigation · Final report · Jul 31, 1999 · N61775 · Substantial damage
  > an inadequate fuel supply which resulted in fuel exhaustion. Factors associated with the accident were the low altitude at which the power loss occurred and the corn crop the airplane contacted.
- [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 SEA99LA125](https://openairdocs.org/ntsb/SEA99LA125.md): Rockwell S-2R · American Falls, ID · Accident · Minor injuries · Limited investigation · Final report · Jul 23, 1999 · N3649X · Substantial damage
  > A loss of engine power for undetermined reasons, and overload of the (right) main landing gear. A contributing factor was the rough terrain.
- [NTSB MIA99LA203](https://openairdocs.org/ntsb/MIA99LA203.md): Air Tractor 301 · Drew, MS · Accident · No injuries · Limited investigation · Final report · Jul 23, 1999 · N2368R · Substantial damage
  > a loss of engine power due to the failure of cylinder No. 4 boss, which was caused by fatigue cracking, resulting in a forced landing in marshy terrain and subsequent nose over.
- [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 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 FTW99LA163](https://openairdocs.org/ntsb/FTW99LA163.md): Canadian Car & Foundry Harvard MK IV · Mckinney, TX · Accident · Minor injuries · Limited investigation · Final report · Jun 13, 1999 · N59TS · Substantial damage
  > The pilot's failure to maintain directional control on landing. Contributing factors were the elevator control restriction, the pilot's inadequate preflight, the ditch, and gusty conditions.
- [NTSB FTW99LA157](https://openairdocs.org/ntsb/FTW99LA157.md): Grumman G-164A · Monaville, TX · Accident · No injuries · Limited investigation · Final report · Jun 2, 1999 · N73PB · Substantial damage
  > The pilot's failure to touch down on the dry area of the landing strip. A factor was the soft terrain condition on the sides of the grass strip.
- [NTSB SEA99LA075](https://openairdocs.org/ntsb/SEA99LA075.md): Air Tractor AT-401 · Jerome, ID · Accident · No injuries · Limited investigation · Final report · May 27, 1999 · N6024M · Substantial damage
  > Fuel exhaustion. Carburetor contamination and rough terrain were factors.
- [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 MIA99LA160](https://openairdocs.org/ntsb/MIA99LA160.md): Grumman G-164A · Orlando, FL · Accident · No injuries · Limited investigation · Final report · May 25, 1999 · N711ZY · Substantial damage
  > The pilots misjudgment of altitude during an attempted banner tow pick-up. This resulted in the banner becoming entangled around the main landing gear. The pilot made a go-around. On landing rollout the banner became entangled around a runway light, and 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 ANC99LA057](https://openairdocs.org/ntsb/ANC99LA057.md): de Havilland DHC-3 · Healy, AK · Accident · No injuries · Limited investigation · Final report · Apr 27, 1999 · N3125N · Substantial damage
  > The pilot's selection of an unsafe/hazardous area for landing. Factors in the accident were the presence of a tail wind, the pilot's inadequate evaluation of the wind conditions, and a narrow airstrip.
- [NTSB LAX99LA158](https://openairdocs.org/ntsb/LAX99LA158.md): North American AT-6D · Hollister, CA · Accident · No injuries · Limited investigation · Final report · Apr 18, 1999 · N6979C · Substantial damage
  > The pilot's inadequate compensation for the crosswind condition, and his failure to maintain directional control during landing.
- [NTSB FTW99LA097](https://openairdocs.org/ntsb/FTW99LA097.md): Aero Commander S2R · Hobart, OK · Accident · Minor injuries · Limited investigation · Final report · Mar 19, 1999 · N5647X · Destroyed
  > The loss of engine power due to an undetermined reason. A factor was the ditch.
- [NTSB ATL99LA051](https://openairdocs.org/ntsb/ATL99LA051.md): Air Tractor 301 · Finley, TN · Accident · No injuries · Limited investigation · Final report · Mar 12, 1999 · N36484 · Substantial damage
  > The pilot's inadequate compensation for wind and his failure to maintain directional control. A factor was the gusting winds.
- [NTSB LAX99LA040](https://openairdocs.org/ntsb/LAX99LA040.md): Grumman-Schweizer G-164C · Oroville, CA · Accident · No injuries · Limited investigation · Final report · Nov 25, 1998 · N6596K · Substantial damage
  > The pilot's decision to attempt readjustment of the rudder pedal in-flight.
- [NTSB ATL99LA014](https://openairdocs.org/ntsb/ATL99LA014.md): Air Tractor AT-301 · Statesboro, GA · Accident · No injuries · Limited investigation · Final report · Nov 9, 1998 · N8770S · Substantial damage
  > The pilot's failure to use carburetor heat. Factors were conditions favorable for the formation of carburetor ice.
- [NTSB LAX99LA008](https://openairdocs.org/ntsb/LAX99LA008.md): Stearman E75 · Oakland, CA · Accident · Minor injuries · Limited investigation · Final report · Oct 11, 1998 · N770WM · Substantial damage
  > A loss of engine power due to the pilot's inadvertent entry into a negative 'g' condition, which induced a temporary interruption of the fuel supply.
- [NTSB ATL98LA117](https://openairdocs.org/ntsb/ATL98LA117.md): Air Tractor 401 · Holly Bluff, MS · Accident · No injuries · Limited investigation · Final report · Aug 22, 1998 · N10103 · Substantial damage
  > The malfunction of the carburetor which resulted in improper fuel flow to the engine.
- [NTSB ATL98LA115](https://openairdocs.org/ntsb/ATL98LA115.md): Schweizer G164B · Newton, MS · Accident · No injuries · Limited investigation · Final report · Aug 16, 1998 · N7502A · Substantial damage
  > The erosion of the compressor impeller and the unsecured fuel control unit resulted in the loss of engine power during the initial climb.
- [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 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 CHI98LA306](https://openairdocs.org/ntsb/CHI98LA306.md): Rockwell S2R · Kindred, ND · Accident · Minor injuries · Limited investigation · Final report · Aug 8, 1998 · N5524X · Destroyed
  > the pilot did not maintain clearance with obstructions along his flight path.
- [NTSB CHI98LA301](https://openairdocs.org/ntsb/CHI98LA301.md): Grumman-Schweizer G-164A · La Moure, ND · Accident · No injuries · Limited investigation · Final report · Aug 4, 1998 · N8693H · Substantial damage
  > a loss of engine power due to undetermined reasons.
- [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 CHI98LA290](https://openairdocs.org/ntsb/CHI98LA290.md): Air Tractor AT-301 · Mentha, MI · Accident · No injuries · Limited investigation · Final report · Jul 31, 1998 · N3659T · Substantial damage
  > the pilot's improper inflight decision to land the airplane on the gravel covered road with an uneven surface that had corn growing next to its edge. A factor in this accident was the pilot selecting an unsuitable landing area.
- [NTSB LAX98LA240](https://openairdocs.org/ntsb/LAX98LA240.md): Grumman G-164A · Tracy, CA · Accident · 1 fatal · Limited investigation · Final report · Jul 22, 1998 · N7442 · Destroyed
  > The failure of the pilot to maintain an adequate clearance with the telephone wires.
- [NTSB LAX98LA238](https://openairdocs.org/ntsb/LAX98LA238.md): Ayres S2R · Shafter, CA · Accident · No injuries · Limited investigation · Final report · Jul 21, 1998 · N8960Q · Substantial damage
  > The pilot's failure to maintain an adequate clearance from the irrigation standpipe due to glare from the rising sun.
- [NTSB MIA98LA201](https://openairdocs.org/ntsb/MIA98LA201.md): Rockwell S-2R · Belzoni, MS · Accident · No injuries · Limited investigation · Final report · Jul 18, 1998 · N8488V · Substantial damage
  > The malfunction in the engine blower section, resulting in oil starvation, the seizure of the engine.
- [NTSB CHI98LA250](https://openairdocs.org/ntsb/CHI98LA250.md): Canadian Car & Foundry Harvard MK IV · Dyersville, IA · Accident · Minor injuries · Limited investigation · Final report · Jul 14, 1998 · N5101W · Substantial damage
  > the pilot in command's not maintaining control of the airplane and his inadvertently allowing the airplane to enter a stall. A factor was the undetermined loss of engine power.
- [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 FTW98LA304](https://openairdocs.org/ntsb/FTW98LA304.md): Air Tractor AT-301 · Plainview, TX · Accident · No injuries · Limited investigation · Final report · Jul 8, 1998 · N2325G · Substantial damage
  > The pilot's failure to maintain obstacle clearance during the aerial application flight. A factor was the transmission wire.
- [NTSB CHI98LA241](https://openairdocs.org/ntsb/CHI98LA241.md): Rockwell S-2R · Fort Ransom, ND · Accident · No injuries · Limited investigation · Final report · Jul 7, 1998 · N4232X · Substantial damage
  > A loss of engine power due to fuel exhaustion. Factors contributing to this accident were the pilot's failure to ensure the airplane had enough fuel to complete the flight, and the fence.
- [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 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 CHI98LA202](https://openairdocs.org/ntsb/CHI98LA202.md): Air Tractor AT-301 · Risco, MO · Accident · No injuries · Limited investigation · Final report · Jun 16, 1998 · N36576 · Substantial damage
  > the pilot's abrupt application of the brakes. Factors contributing to this accident were the pilot's inadequate preflight preparation, his delayed decision to abort the takeoff, and the soft field.
- [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 FTW98LA259](https://openairdocs.org/ntsb/FTW98LA259.md): Ayres S2R · Watson, AR · Accident · No injuries · Limited investigation · Final report · Jun 5, 1998 · N4007Y · Substantial damage
  > The partial loss of engine power due to the disconnection of the propeller governor control as a result of the stripped threads on the propeller governor control push-pull rod. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW98LA252](https://openairdocs.org/ntsb/FTW98LA252.md): Grumman-Schweizer G-164B · Coy, AR · Accident · No injuries · Limited investigation · Final report · Jun 1, 1998 · N943QC · Substantial damage
  > failure of the left main tire, which resulted in the pilot's inability to maintain directional control of the airplane during the landing roll.
- [NTSB MIA98LA181](https://openairdocs.org/ntsb/MIA98LA181.md): Air Tractor AT-401 · Rich, MS · Accident · No injuries · Limited investigation · Final report · May 24, 1998 · N1008Y · Substantial damage
  > a loss of engine power for an undetermined reason, resulting in a forced landing and subsequent impact with rough terrain.
- [NTSB CHI98LA230](https://openairdocs.org/ntsb/CHI98LA230.md): Grumman G-164A · Red Lake Falls, MN · Accident · No injuries · Limited investigation · Final report · May 21, 1998 · N9632 · Substantial damage
  > a locked brake for undetermined reasons.
- [NTSB SEA98LA080](https://openairdocs.org/ntsb/SEA98LA080.md): Air Tractor AT-401 · Idaho Falls, ID · Accident · Minor injuries · Limited investigation · Final report · May 20, 1998 · N1009T · Substantial damage
  > The pilot's failure to maintain clearance from a power transmission line during an aerial application flight. Factors include a power line located just beyond the boundary of the field being sprayed, and the pilot's incorrect judgement of the distance between…
- [NTSB FTW98LA171](https://openairdocs.org/ntsb/FTW98LA171.md): Aero Commander S2R · Cushing, OK · Accident · No injuries · Limited investigation · Final report · Apr 4, 1998 · N8984Q · Substantial damage
  > The total loss of engine power resulting from a sheared accessory drive due to an undetermined reason. A factor was the lack of suitable terrain for the forced landing.
- [NTSB CHI98LA118](https://openairdocs.org/ntsb/CHI98LA118.md): Air Tractor AT-401 · Highmore, SD · Accident · No injuries · Limited investigation · Final report · Apr 3, 1998 · N1008T · Substantial damage
  > the pilot failed to abort the takeoff in a timely manner and could not stop on the runway.
- [NTSB LAX98LA090](https://openairdocs.org/ntsb/LAX98LA090.md): Air Tractor AT-301 · Wasco, CA · Accident · No injuries · Limited investigation · Final report · Feb 18, 1998 · N3656C · Substantial damage
  > The pilot overboosting the engine on takeoff which resulted in a cracked cylinder and subsequent loss of engine power.
- [NTSB FTW98LA004](https://openairdocs.org/ntsb/FTW98LA004.md): North American Harvard MK IV · Midland, TX · Accident · No injuries · Limited investigation · Final report · Oct 4, 1997 · N13595 · 2 aircraft · Substantial damage
  > the failure of the pilots of both airplanes to maintain clearance from each other. A factor was their failure to follow procedures/directives.

Next page: https://openairdocs.org/ntsb.md?engine=52016&page=12

## 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'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52016&page=11

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