# NTSB investigations: Pratt & Whitney R-985 series, LA

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 3 · 107 cases

## Latest cases

- [NTSB CEN25LA231](https://openairdocs.org/ntsb/CEN25LA231.md): Grumman Acft ENG Cor-Schweizer G-164B · Lockport, LA · Accident · No injuries · Class 3 · Limited · Final report · Jul 1, 2025 · N8834H · Substantial damage
  > The pilot’s inadequate planning for the high density altitude conditions which resulted in reduced airplane performance, climb capability, and subsequent forced landing.
- [NTSB CEN24LA213](https://openairdocs.org/ntsb/CEN24LA213.md): Boeing E75 · Shuteston, LA · Accident · No injuries · Class 4 · Limited · Final report · Jun 7, 2024 · N768WM · Substantial damage
  > The pilot failure to maintain directional control while landing on a wet grass strip.
- [NTSB CEN23LA202](https://openairdocs.org/ntsb/CEN23LA202.md): Grumman Acft ENG Cor-Schweizer G-164B · Wright, LA · Accident · No injuries · Class 4 · Limited · Final report · May 25, 2023 · N6699Q · Substantial damage
  > The pilot's decision to takeoff with the airplane overloaded which resulted in the airplane settling and subsequently impacting terrain.
- [NTSB GAA19CA009](https://openairdocs.org/ntsb/GAA19CA009.md): Stearman A75N1(PT17) · New Orleans, LA · Accident · No injuries · Data collection · Final report · Oct 6, 2018 · N56949 · Substantial damage
  > The pilot’s failure to maintain directional control during a crosswind landing.
- [NTSB CEN18LA357](https://openairdocs.org/ntsb/CEN18LA357.md): Grumman G164 · Opelousas, LA · Accident · No injuries · Limited investigation · Final report · Aug 29, 2018 · N956X · Substantial damage
  > The loss of two securing bolts that allowed the left magneto to move around, which disrupted the spark timing and resulted in the engine losing total power.
- [NTSB CEN11LA396](https://openairdocs.org/ntsb/CEN11LA396.md): Grumman G164 · Oak Ridge, LA · Accident · Minor injuries · Limited investigation · Final report · May 27, 2011 · N2LU · Substantial damage
  > The flight instructor's failure to maintain adequate airspeed, which resulted in an aerodynamic stall and subsequent impact with trees.
- [NTSB CEN10CA426](https://openairdocs.org/ntsb/CEN10CA426.md): Grumman Acft ENG Cor-Schweizer G-164B · Alexandria, LA · Accident · No injuries · Data collection · Final report · Jul 22, 2010 · N6772Q · Substantial damage
  > The loss of engine power for undetermined reasons.
- [NTSB DFW08CA168](https://openairdocs.org/ntsb/DFW08CA168.md): Grumman G-164 · Tallulah, LA · Accident · Minor injuries · Data collection · Final report · Jun 23, 2008 · N54229 · Substantial damage
  > The pilot's failure to maintain aircraft control. Contributing to the accident was the pilot's failure to maintain adequate airspeed.
- [NTSB DFW05CA236](https://openairdocs.org/ntsb/DFW05CA236.md): Grumman G-164B · Epps, LA · Accident · Serious injuries · Data collection · Final report · Sep 14, 2005 · N6667Q · Substantial damage
  > The pilot's failure to maintain clearance with the power lines.
- [NTSB DFW05CA212](https://openairdocs.org/ntsb/DFW05CA212.md): Grumman G164B · Alexandria, LA · Accident · No injuries · Data collection · Final report · Aug 16, 2005 · N6903K · Substantial damage
  > The pilot's failure to maintain adequate airspeed which resulted in a stall. A contributing factor was the high density altitude.
- [NTSB DFW05CA084](https://openairdocs.org/ntsb/DFW05CA084.md): Grumman G-164A · Gilbert, LA · Accident · No injuries · Data collection · Final report · Mar 10, 2005 · N5327 · Substantial damage
  > The pilot's failure to maintain control of the airplane during landing. A contributing factor was a deflated right main tire.
- [NTSB FTW02LA194](https://openairdocs.org/ntsb/FTW02LA194.md): Grumman-Schweizer G-164A · Basile, LA · Accident · No injuries · Limited investigation · Final report · Jul 1, 2002 · N8917H · Substantial damage
  > the loss of engine power as a result of fuel starvation. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW01LA193](https://openairdocs.org/ntsb/FTW01LA193.md): Grumman G164B · Rayville, LA · Accident · No injuries · Limited investigation · Final report · Aug 28, 2001 · N2LU · Substantial damage
  > the partial failure of the magneto drive coupling while maneuvering, which resulted in a loss of engine power and a forced landing. A contributing factor to the accident was the lack of suitable terrain for the forced landing.
- [NTSB FTW01LA177](https://openairdocs.org/ntsb/FTW01LA177.md): Grumman-Schweizer G-164B · Bunkie, LA · Accident · Minor injuries · Limited investigation · Final report · Aug 9, 2001 · N542KG · Destroyed
  > The loss of engine power for undetermined reasons while maneuvering. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW00LA239](https://openairdocs.org/ntsb/FTW00LA239.md): Grumman-Schweizer G-164B · Kaplan, LA · Accident · No injuries · Limited investigation · Final report · Aug 21, 2000 · N6506K · Substantial damage
  > the failure of the supercharger during takeoff. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW00LA167](https://openairdocs.org/ntsb/FTW00LA167.md): Grumman-Schweizer G164B · Natchitoches, LA · Accident · No injuries · Limited investigation · Final report · Jun 1, 2000 · N48723 · Destroyed
  > The failure of the pilot to maintain directional control during the landing roll, which resulted in a ground loop. A factor was the crosswind.
- [NTSB FTW99LA182](https://openairdocs.org/ntsb/FTW99LA182.md): Grumman G-164B · Iowa, LA · Accident · Minor injuries · Limited investigation · Final report · Jul 6, 1999 · N6703Q · Substantial damage
  > The pilot's failure to maintain clearance with the crops being sprayed. A factor was the pilot's diverted attention.
- [NTSB FTW99LA101](https://openairdocs.org/ntsb/FTW99LA101.md): Grumman G-164B · Jennings, LA · Accident · No injuries · Limited investigation · Final report · Mar 26, 1999 · N6758Q · Substantial damage
  > The pilot's inadvertent stall during the departure turn to downwind. A factor was the tailwind.
- [NTSB FTW98LA249](https://openairdocs.org/ntsb/FTW98LA249.md): Grumman G-164A · Iowa, LA · Accident · No injuries · Limited investigation · Final report · May 29, 1998 · N8629H · Substantial damage
  > partial loss of engine power during takeoff for undetermined reason(s). The obstructions (trees & dirt bank) were related factors.
- [NTSB FTW98LA193](https://openairdocs.org/ntsb/FTW98LA193.md): Lerille P & W 1937 · Lafayette, LA · Accident · Serious injuries · Limited investigation · Final report · Apr 25, 1998 · N546R · Substantial damage
  > The fuel exhaustion due to the pilot's failure to refuel. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW98LA058](https://openairdocs.org/ntsb/FTW98LA058.md): Gulfstream-Schweizer G-164B · Lecompte, LA · Accident · Serious injuries · Limited investigation · Final report · Nov 24, 1997 · N2LU · Substantial damage
  > a loose battery cover, due to improper installation by maintenance personnel, that became jammed with an elevator control rod and restricted the movement of the elevator control system, which subsequently led to an uncontrolled impact with a tree, shortly…
- [NTSB FTW95LA331](https://openairdocs.org/ntsb/FTW95LA331.md): Grumman G-164A · St.Francisville, LA · Accident · No injuries · Limited investigation · Final report · Aug 5, 1995 · N732Y · Substantial damage
  > The pilot's failure to maintain clearance with the obstruction on short final. A factor was the low visibility.
- [NTSB FTW95LA197](https://openairdocs.org/ntsb/FTW95LA197.md): Grumman G-164A · Abbeville, LA · Accident · No injuries · Limited investigation · Final report · May 12, 1995 · N8509H · Substantial damage
  > The inadvertent stall.
- [NTSB FTW94LA270](https://openairdocs.org/ntsb/FTW94LA270.md): Grumman G-164B · Shreveport, LA · Accident · 1 fatal · Limited investigation · Final report · Aug 12, 1994 · N48664 · Destroyed
  > The pilot's incapacitation due to a heart attack.
- [NTSB FTW93LA179](https://openairdocs.org/ntsb/FTW93LA179.md): Grumman-Schweizer G-164B · Kaplan, LA · Accident · No injuries · Limited investigation · Final report · Jun 5, 1993 · N6693Q · Substantial damage
  > The pilot's failure to have the airplane properly attended during start when people were available. A factor was the inadequate tie down rope.
- [NTSB FTW93LA177](https://openairdocs.org/ntsb/FTW93LA177.md): Weatherly 620B · Crowley, LA · Accident · No injuries · Limited investigation · Final report · Jun 5, 1993 · N2002E · Substantial damage
  > Severe propeller and airframe vibration for undetermined reasons. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW93LA175](https://openairdocs.org/ntsb/FTW93LA175.md): Grumman G-164B · St. Martinville, LA · Accident · No injuries · Limited investigation · Final report · Jun 2, 1993 · N48724 · Substantial damage
  > The pilot's and tractor driver's inadequate visual lookout
- [NTSB FTW93LA153](https://openairdocs.org/ntsb/FTW93LA153.md): Grumman G-164B · Arnaudville, LA · Accident · No injuries · Limited investigation · Final report · May 12, 1993 · N6639Q · Substantial damage
  > The loss of engine power for undetermined reasons. A factor was the unsuitable terrain
- [NTSB FTW93LA089](https://openairdocs.org/ntsb/FTW93LA089.md): Grumman G-164B · Indian Village, LA · Accident · No injuries · Limited investigation · Final report · Feb 22, 1993 · N48455 · Substantial damage
  > Landing performed short of the runway threshold. Factor was wet grassy terrain
- [NTSB FTW92LA137](https://openairdocs.org/ntsb/FTW92LA137.md): Grumman G-164A · Kinder, LA · Accident · No injuries · Limited investigation · Final report · May 15, 1992 · N8629H · Substantial damage
  > The failure of the left brake which led to a loss of directional control. A factor was the rough terrain immediately adjacent to the runway.
- [NTSB FTW90DRD14](https://openairdocs.org/ntsb/FTW90DRD14.md): Grumman G-164A · Sommerset, LA · Accident · 1 fatal · Final report · Jul 25, 1990 · N7854 · Destroyed
  > The pilot's failure to attain adequate clearance above crops at the end of the runway.
- [NTSB FTW90DRD10](https://openairdocs.org/ntsb/FTW90DRD10.md): Grumman G-164B · Mamou, LA · Accident · No injuries · Final report · Jun 4, 1990 · N6693Q · Substantial damage
  > Pilot misjudged wind information. Factors contributing to the accident were the tailwind, the trees and the levee.
- [NTSB FTW90DRD05](https://openairdocs.org/ntsb/FTW90DRD05.md): Schweizer G-164B · Reeves, LA · Accident · No injuries · Final report · Apr 13, 1990 · N48455 · Substantial damage
  > Loss of engine power due to a frozen rocker arm.
- [NTSB FTW90DRD03](https://openairdocs.org/ntsb/FTW90DRD03.md): Grumman G-164A · Glynn, LA · Accident · No injuries · Final report · Feb 22, 1990 · N930X · Substantial damage
  > Loss of directional control on the ground, due to intermittent locking of the right brake during the landing roll.
- [NTSB FTW89DRD09](https://openairdocs.org/ntsb/FTW89DRD09.md): Schweizer G-164A · Bunkie, LA · Accident · No injuries · Final report · Jun 23, 1989 · N602Y · Substantial damage
  > The loss of the number five cylinder in flight, resulting in a loss of engine RPM. The pilot misjudged the landing flare height due to obscured vision from fire and smoke and the airplane stalled and impacted the ground nose first.
- [NTSB FTW89DRD06](https://openairdocs.org/ntsb/FTW89DRD06.md): Grumman-Schweizer G-164B · Ville Platte, LA · Accident · No injuries · Final report · Jun 6, 1989 · N6693Q · Substantial damage
  > Wear and/or failure of the carburetor/float. Factors related to the accident were: the terrain conditions.
- [NTSB FTW88DRD11](https://openairdocs.org/ntsb/FTW88DRD11.md): Schweizer G-164B · Cheneyville, LA · Accident · Minor injuries · Final report · Jun 29, 1988 · N48585 · Destroyed
  > The ag airplane was returning after spraying chemical when the engine started to lose power. During the forced landing on a highway the left wing struck a road sign. No mechanical reason for the engine power loss was found. The acft had an annual inspection…
- [NTSB FTW87DRD14](https://openairdocs.org/ntsb/FTW87DRD14.md): Grumman G-164B · Oak Grove, LA · Accident · No injuries · Final report · Aug 12, 1987 · N48614 · Substantial damage
  > After completing the last pass of an agricultural operation the pilot pulled up and started a turn. At this time the engine started shaking and losing power. The pilot attempted a forced landing in a soft field. The wheels bogged four or five inches into the…
- [NTSB FTW86LRD15](https://openairdocs.org/ntsb/FTW86LRD15.md): Grumman G-164B · Church Point, LA · Accident · No injuries · Final report · Jun 24, 1986 · N48585 · Substantial damage
  > The acfts left wingtip caught in weeds during takeoff and the acft was pulled left. The plt had turned to avoid a wet spot on the airstrip and contacted the high weeds then swerved into a rice levee.
- [NTSB FTW86LRD12](https://openairdocs.org/ntsb/FTW86LRD12.md): Grumman G-164A · Branch, LA · Accident · No injuries · Final report · May 21, 1986 · N5407 · Substantial damage
  > Shortly after takeoff, a partial power loss occurred & the plt made a forced landing in a soft plowed field, where the acft nosed over onto its back. The plt rprtd the loss of power was due to failure of the eng blower.
- [NTSB FTW85LA235](https://openairdocs.org/ntsb/FTW85LA235.md): Grumman G-164A-450 · Basile, LA · Accident · No injuries · Limited investigation · Final report · May 6, 1985 · N8614H · Destroyed
  > The plt detected a fuel leak after takeoff and returned to land. He shut the acft eng down and exited the acft, but the acft busrt into flames before the prop stopped turing. Subsequent investigation discovered a material failure in a fuel line on the eng…
- [NTSB FTW82DA257](https://openairdocs.org/ntsb/FTW82DA257.md): Grumman G-164A · Epps, LA · Accident · No injuries · Final report · Jul 1, 1982 · N6562 · Substantial damage
  > The pilot stated that while he was spraying crops, he looked into the cockpit during a turn to check the amount of solution that was remaining. He stated that when he looked up, he was too low to complete the turn and miss the trees. He went to full power and…
- [NTSB FTW81DRJ35](https://openairdocs.org/ntsb/FTW81DRJ35.md): Beech D18S · Simsboro, LA · Accident · No injuries · Closed · Sep 12, 1981 · N123J · Substantial damage
- [NTSB FTW81DRD36](https://openairdocs.org/ntsb/FTW81DRD36.md): Boeing A75-N1 · Plaquemine, LA · Accident · No injuries · Closed · Aug 1, 1981 · N55670 · Substantial damage
- [NTSB FTW81DRJ21](https://openairdocs.org/ntsb/FTW81DRJ21.md): Grumman G-164B · Shreveport, LA · Accident · No injuries · Closed · Jul 14, 1981 · N6626Q · Substantial damage
- [NTSB FTW80DRJ36](https://openairdocs.org/ntsb/FTW80DRJ36.md): Weatherly 201B · Winnsboro, LA · Accident · Minor injuries · Closed · Aug 28, 1980 · N1285W · 2 aircraft · Substantial damage
- [NTSB FTW80DRJ31](https://openairdocs.org/ntsb/FTW80DRJ31.md): Stearman B75 · Tallulah, LA · Accident · No injuries · Closed · Aug 7, 1980 · N8095E · Substantial damage
- [NTSB FTW80DRJ26](https://openairdocs.org/ntsb/FTW80DRJ26.md): Grumman G164A · Crowville, LA · Accident · No injuries · Closed · Jun 30, 1980 · N917X · Substantial damage
- [NTSB FTW80DRD29](https://openairdocs.org/ntsb/FTW80DRD29.md): Grumman G-164B · Church Point, LA · Accident · No injuries · Closed · May 2, 1980 · N48585 · Substantial damage
- [NTSB FTW80DRJ12](https://openairdocs.org/ntsb/FTW80DRJ12.md): Grumman G-164B · Monroe, LA · Accident · Minor injuries · Closed · Feb 22, 1980 · N6670Q · Destroyed

Next page: https://openairdocs.org/ntsb.md?engine=52008&state=LA&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" = 'LA' 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 ('52008'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52008&state=LA

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