# NTSB investigations: Pratt & Whitney R1340 series, 1998

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 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.

## 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 year(c."eventDate") = 1998
  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&year=1998

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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.