# NTSB investigations: Pratt & Whitney R1340 series, 1993

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 LAX94LA063](https://openairdocs.org/ntsb/LAX94LA063.md): North American SNJ-5 · Santa Paula, CA · Accident · No injuries · Limited investigation · Final report · Dec 3, 1993 · N89014 · Substantial damage
  > was the failure of the needle valve pin assembly in the airplane's carburetor. A factor which contributed to the accident was the lack of suitable terrain for the emergency landing.
- [NTSB LAX94LA019](https://openairdocs.org/ntsb/LAX94LA019.md): Schweizer G-164B · Arvin, CA · Accident · No injuries · Limited investigation · Final report · Oct 19, 1993 · N7501K · Substantial damage
  > the loss of power for undetermined reasons.
- [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 ATL93LA157](https://openairdocs.org/ntsb/ATL93LA157.md): Air Tractor AT301 · Deatsville, AL · Accident · No injuries · Limited investigation · Final report · Sep 11, 1993 · N36613 · Substantial damage
  > Was a crack in no.3 cylinder head which resulted in the loss of engine power.
- [NTSB LAX93LA327](https://openairdocs.org/ntsb/LAX93LA327.md): Air Tractor AT-301 · Dos Palos, CA · Accident · No injuries · Limited investigation · Final report · Aug 18, 1993 · N2330V · Substantial damage
  > The failure of the master rod which resulted in a complete loss of engine power and subsequent forced landing. The irrigation ditch was a factor in this accident.
- [NTSB MIA93LA176](https://openairdocs.org/ntsb/MIA93LA176.md): Schweizer G-164B · Immokalee, FL · Accident · No injuries · Limited investigation · Final report · Aug 16, 1993 · N8451K · Substantial damage
  > The pilot-in-command's failure to maintain airspeed (vs) while maneuvering resulting in a stall/mush.
- [NTSB FTW93LA239](https://openairdocs.org/ntsb/FTW93LA239.md): Grumman-Schweizer G-164A · Garwood, TX · Accident · No injuries · Limited investigation · Final report · Aug 13, 1993 · N7993 · Substantial damage
  > The partial power loss for undetermined reasons. A factor was the lack of suitable terrain onto which a forced landing could be executed.
- [NTSB FTW93LA238](https://openairdocs.org/ntsb/FTW93LA238.md): Grumman G-164B · Pioneer, LA · Accident · No injuries · Limited investigation · Final report · Aug 12, 1993 · N8227K · 2 aircraft · Substantial damage
  > The failure by both pilots to maintain visual lookout. Factors were the inadequate radio communications by both pilots, and the departing pilot's failure to follow procedures and directives.
- [NTSB FTW93LA230](https://openairdocs.org/ntsb/FTW93LA230.md): Aero Commander S2R · England, AR · Accident · No injuries · Limited investigation · Final report · Aug 4, 1993 · N5570X · Substantial damage
  > A partial loss of engine power for undetermined reasons.
- [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 BFO93LA142](https://openairdocs.org/ntsb/BFO93LA142.md): North American AT-6 · Matawan, NJ · Accident · No injuries · Limited investigation · Final report · Jul 30, 1993 · N6617X · Substantial damage
  > The water collection in the ignition harness which rendered the lower cylinder spark plugs inoperative resulting in partial power loss.
- [NTSB LAX93LA303](https://openairdocs.org/ntsb/LAX93LA303.md): Ayres S2R · Stratford, CA · Accident · No injuries · Limited investigation · Final report · Jul 28, 1993 · N4930X · Destroyed
  > That the pilot misjudged the airplane's altitude. Factors relating to this accident were the pilot's fatigue and the light conditions.
- [NTSB ATL93LA132](https://openairdocs.org/ntsb/ATL93LA132.md): Grumman G-164A · Atmore, AL · Accident · No injuries · Limited investigation · Final report · Jul 23, 1993 · N4824 · Substantial damage
  > The total failure of the engine supercharger, which resulted in engine stoppage. A factor was the rough terrain at the forced landing site.
- [NTSB DEN93LA081](https://openairdocs.org/ntsb/DEN93LA081.md): Air Tractor AT-401 · Dermott, AR · Accident · No injuries · Limited investigation · Final report · Jul 15, 1993 · N1009T · Substantial damage
  > Power loss due to the total failure of the engine's master rod. Factors were an improper engine overhaul and the lack of suitable terrain for a forced landing.
- [NTSB FTW93LA180](https://openairdocs.org/ntsb/FTW93LA180.md): Grumman G-164A · Dumas, AR · Accident · No injuries · Limited investigation · Final report · Jun 7, 1993 · N6622Q · Substantial damage
  > The pilot's inadequate compensation for wind conditions.
- [NTSB FTW93LA174](https://openairdocs.org/ntsb/FTW93LA174.md): Grumman G-164B · Stuttgart, AR · Accident · No injuries · Limited investigation · Final report · Jun 2, 1993 · N6695K · Substantial damage
  > The pilot's selection of the downwind runway for landing. Factors were the wind conditions and the left brake malfunction for undetermined reasons
- [NTSB FTW93LA173](https://openairdocs.org/ntsb/FTW93LA173.md): Grumman G-164A · Ganado, TX · Accident · 1 fatal · Limited investigation · Final report · Jun 2, 1993 · N6752Q · Destroyed
  > The pilot's failure to maintain clearance with the power lines
- [NTSB FTW93LA167](https://openairdocs.org/ntsb/FTW93LA167.md): Grumman G-164B · Stuttgart, AR · Accident · No injuries · Limited investigation · Final report · May 26, 1993 · N8405K · Destroyed
  > Pilot's failure to maintain clearance from the electrical wires.
- [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 LAX93LA200](https://openairdocs.org/ntsb/LAX93LA200.md): Grumman 164A · Biggs, CA · Accident · 1 fatal · Limited investigation · Final report · May 5, 1993 · N5249 · Destroyed
  > Failure of the number 2 engine cylinder. A factor related to the accident was the lack of altitude for the pilot to make a successfull forced landing.
- [NTSB DEN93LA051](https://openairdocs.org/ntsb/DEN93LA051.md): Grumman G-164A · Truman, AR · Accident · No injuries · Limited investigation · Final report · Apr 28, 1993 · N31182 · Destroyed
  > A power loss for undetermined reasons. A factor was: the lack of suitable terrain for the forced landing.
- [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 MIA93LA104](https://openairdocs.org/ntsb/MIA93LA104.md): Air Tractor AT-401 · Fort Pierce, FL · Accident · Minor injuries · Limited investigation · Final report · Apr 17, 1993 · N7316L · Destroyed
  > Failure of the no. 2 cylinder in fatigue for undetermined reasons, over unsuitable terrain. The lack of suitale terrain for the forced landing was a factor.
- [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 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 FTW93LA075](https://openairdocs.org/ntsb/FTW93LA075.md): North American AT-6D · Fort Worth, TX · Accident · No injuries · Limited investigation · Final report · Jan 23, 1993 · N101NZ · Substantial damage
  > The pilot's failure to compensate for the crosswind. A factor was the crosswind.
- [NTSB LAX93LA098](https://openairdocs.org/ntsb/LAX93LA098.md): Grumman G-164A · Lost Hills, CA · Accident · No injuries · Limited investigation · Final report · Jan 22, 1993 · N6654 · Substantial damage
  > The pilot's inability to maintain directional control during the landing roll out due to a binding left brake master cylinder.

## 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") = 1993
  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=1993

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