# NTSB investigations: Grumman Acft ENG Cor-Schweizer G-164A, WA 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 SEA08CA093](https://openairdocs.org/ntsb/SEA08CA093.md): Grumman G-164A · Dayton, WA · Accident · Minor injuries · Data collection · Final report · Mar 25, 2008 · N48629 · Substantial damage > The pilot's inadequate compensation for the wind conditions and failure to maintain an adequate airspeed. A contributing factor was the sudden windshift. - [NTSB SEA01LA055](https://openairdocs.org/ntsb/SEA01LA055.md): Grumman-Schweizer G-164A · Waitsburg, WA · Accident · Minor injuries · Limited investigation · Final report · Feb 28, 2001 · N48651 · Destroyed > The pilot's failure to maintain clearance from the power lines during a pull-up, resulting in an in-flight collision with the lines, loss of control and subsequent in-flight collision with terrain. Contributing factors were the power lines and the pilot's… - [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 SEA96LA112](https://openairdocs.org/ntsb/SEA96LA112.md): Grumman-Schweizer G-164A · Prescott, WA · Accident · Minor injuries · Limited investigation · Final report · Jun 6, 1996 · N9793 · Substantial damage > failure of the pilot to visually clear his flight path, after allowing his attention to be diverted, and his resultant failure to maintain sufficient altitude/clearance from a hill. The hilly terrain was a related factor. - [NTSB SEA93LA198](https://openairdocs.org/ntsb/SEA93LA198.md): Grumman-Schweizer G164A · Dayton, WA · Accident · Minor injuries · Limited investigation · Final report · Sep 13, 1993 · N9536 · Destroyed > The pilot in command's failure to maintain proper clearance from the power lines. The unmarked power lines were a factor. - [NTSB SEA93FA094](https://openairdocs.org/ntsb/SEA93FA094.md): Grumman A6E · Steptoe, WA · Accident · Serious injuries · Field investigation · Final report · Apr 14, 1993 · USN · 2 aircraft · Destroyed > The inherent limitations of the see-and-avoid concept of separation of aircraft operating under visual flight rules that precluded the crew of the A6E and the pilot of the agcat from recognizing a collision hazard and taking actions to avoid a midair… - [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 SEA92LA125](https://openairdocs.org/ntsb/SEA92LA125.md): Grumman G-164A · Coulee City, WA · Accident · No injuries · Limited investigation · Final report · Jun 11, 1992 · N8938H · Substantial damage > A loss of engine power for undetermined reasons. Factors include soft terrain. - [NTSB SEA90LA103](https://openairdocs.org/ntsb/SEA90LA103.md): Grumman G-164A · Tekoa, WA · Accident · No injuries · Limited investigation · Final report · Jun 21, 1990 · N29SK · Destroyed > Failure of the pilot to maintain clearance between the airplane and tall grass adjacent to the gravel strip. - [NTSB SEA89LA121](https://openairdocs.org/ntsb/SEA89LA121.md): Grumman-Schweizer G-164A · Colfax, WA · Accident · No injuries · Limited investigation · Final report · Jun 24, 1989 · N8974H · Substantial damage > Improper installation of the cylinder assembly. The terrain was not suitable for a successful forced landing. - [NTSB SEA89LA059](https://openairdocs.org/ntsb/SEA89LA059.md): Grumman-Schweizer G-164A · Rosalia, WA · Accident · No injuries · Limited investigation · Final report · Mar 25, 1989 · N8792H · Substantial damage > A loss of engine power due to a supercharger failure. Contributing to the accident was the soft terrain on which the forced landing was made. - [NTSB SEA88LA135](https://openairdocs.org/ntsb/SEA88LA135.md): Schweizer G164A · Colfax, WA · Accident · No injuries · Limited investigation · Final report · Jul 21, 1988 · N8974H · Substantial damage > On departure with a load of chemical, ag plt attempted to outclimb rising terrain ahead. The aircraft collided with terrain in a stall/mush. - [NTSB SEA85LA074](https://openairdocs.org/ntsb/SEA85LA074.md): Grumman 164A · Ritzville, WA · Accident · No injuries · Limited investigation · Final report · Mar 14, 1985 · N8495 · Substantial damage > During landing the acft caught a gust of wind and drifted right of the runway. The plt attempted to correct by use of rudder and aileron, but was unsuccessful. The acft then nosed ver. - [NTSB SEA83LA143](https://openairdocs.org/ntsb/SEA83LA143.md): Grumman G-164A · Waitsburg, WA · Accident · No injuries · Limited investigation · Final report · Jun 29, 1983 · N9536 · Substantial damage > The acft groundlooped into soft dirt and nosed over after a brake malfunction. The pilot stated that upon landing the left brake locked. The pilot tried to maintain directional control with rudder and power. The acft veered right into soft dirt and came rest… - [NTSB SEA82DA083](https://openairdocs.org/ntsb/SEA82DA083.md): Grumman G-164A · Dayton, WA · Accident · Minor injuries · Final report · Jun 9, 1982 · N7365 · Destroyed > The pilot had just returned to the area after picking up a load of di-syston. Another ag aircraft had been spraying in an adjacent field. The pilot circled and looked for the other aircraft, but did not see it. He stated that he checked the smoke to determine… - [NTSB SEA73DYG03](https://openairdocs.org/ntsb/SEA73DYG03.md): Grumman G-164A · Touchet, WA · Accident · No injuries · Closed · Jul 14, 1972 · N7372 · Substantial damage ## 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" = 'WA' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('3952801')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?model=3952801&state=WA --- 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.