# NTSB investigations: Pratt & Whitney R-985 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 MIA99LA041](https://openairdocs.org/ntsb/MIA99LA041.md): Grumman-Schweizer G-164B · Fort Gains, GA · Accident · No injuries · Limited investigation · Final report · Dec 1, 1998 · N6630Q · Substantial damage
  > a power loss due to internal damage to the second- and third- stage turbine rotor blades, due to thermal heat, rendering the engine incapable of producing full power, resulting in a forced landing, and subsequent impact with the terrain.
- [NTSB ANC99LA007](https://openairdocs.org/ntsb/ANC99LA007.md): de Havilland DHC-2 · Chitina, AK · Accident · No injuries · Limited investigation · Final report · Oct 18, 1998 · N94DC · Substantial damage
  > The pilot's inadequate preflight which failed to detect water contamination in the fuel system. A factor was the unsuitable terrain in the emergency landing area.
- [NTSB FTW98LA410](https://openairdocs.org/ntsb/FTW98LA410.md): Grumman G-164A · Mart, TX · Accident · No injuries · Limited investigation · Final report · Sep 25, 1998 · N983X · Substantial damage
  > The loss of engine power for an undetermined reason. A factor was the lack of suitable terrain for the forced landing.
- [NTSB ANC98LA157](https://openairdocs.org/ntsb/ANC98LA157.md): de Havilland DHC-2 · Iliamna, AK · Accident · No injuries · Limited investigation · Final report · Sep 19, 1998 · N700NL · Substantial damage
  > The pilot's inadequate compensation for the gusty wind conditions, and his attempted flight into adverse weather. Factors associated with the accident are high and gusty winds.
- [NTSB FTW98LA407](https://openairdocs.org/ntsb/FTW98LA407.md): Snow S2C · Bovina, TX · Accident · No injuries · Limited investigation · Final report · Sep 18, 1998 · N9492R · Substantial damage
  > The pilot's failure to maintain directional control during the landing roll.
- [NTSB ANC98LA112](https://openairdocs.org/ntsb/ANC98LA112.md): de Havilland DHC-2 · Nondalton, AK · Accident · 1 fatal · Limited investigation · Final report · Jul 30, 1998 · N123EF · No damage
  > The pilot's inadequate procedures/directives when he allowed a passenger to exit the cabin area while the propeller was still turning, and the passenger's failure to follow the pilot's instructions to stay away from the propeller. A factor associated with the…
- [NTSB SEA98LA140](https://openairdocs.org/ntsb/SEA98LA140.md): Grumman-Schweizer G-164A · Caldwell, ID · Accident · No injuries · Limited investigation · Final report · Jul 17, 1998 · N7951 · Substantial damage
  > The pilot-in-command's misjudgment of clearance with a power line, resulting in a collision with the line. Factors included a power line and dark night light conditions in the spray area.
- [NTSB LAX98LA207](https://openairdocs.org/ntsb/LAX98LA207.md): Naval Aircraft Factory N3N-3 · Skull Valley, AZ · Accident · Serious injuries · Limited investigation · Final report · Jun 20, 1998 · N45053 · Destroyed
  > The pilot's failure to maintain control of the aircraft while maneuvering at a low altitude.
- [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 CHI98LA175](https://openairdocs.org/ntsb/CHI98LA175.md): Boeing Stearman A75-N1 · West Fargo, ND · Accident · No injuries · Limited investigation · Final report · May 27, 1998 · N49955 · Substantial damage
  > the pilot's failure to assure an adequate fuel supply in order to complete the flight. A factor associated with the accident was the soft terrain on which the forced landing was made.
- [NTSB SEA98LA079](https://openairdocs.org/ntsb/SEA98LA079.md): Air Tractor AT-301 · Idaho Falls, ID · Accident · No injuries · Limited investigation · Final report · May 19, 1998 · N4326S · Substantial damage
  > The pilot's inadequate inflight decision to land with a tailwind and his failure to maintain aircraft control. Also contributing was the pilot's improper setting of the fuel mixture which resulted in a partial loss of engine power.
- [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 ANC98LA038](https://openairdocs.org/ntsb/ANC98LA038.md): Grumman G-21 · Dutch Harbor, AK · Accident · No injuries · Limited investigation · Final report · Apr 15, 1998 · N22932 · Substantial damage
  > The pilot-in-command's failure to identify the swells prior to landing. A factor was the water swells.
- [NTSB SEA98LA038](https://openairdocs.org/ntsb/SEA98LA038.md): Grumman-Schweizer G-164B · Stanwood, WA · Accident · No injuries · Limited investigation · Final report · Feb 19, 1998 · N48493 · Substantial damage
  > The pilot's failure to apply carburetor heat. Factors included carburetor icing conditions and soft terrain in the forced landing area.

## 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 ('52008'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

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