# NTSB investigations: Grumman Acft ENG Cor-Schweizer G-164A: In flight collision with terrain/water 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 ANC06CA039](https://openairdocs.org/ntsb/ANC06CA039.md): Grumman-Schweizer G-164A · Dixon, CA · Accident · No injuries · Data collection · Final report · Mar 30, 2006 · N5397 · Substantial damage > The pilot's failure to attain altitude/clearance during takeoff/initial climb, which resulted in an in-flight collision with terrain. Factors associated with the accident were the pilot's inadequate evaluation of the weather, and unfavorable winds. - [NTSB SEA05LA146](https://openairdocs.org/ntsb/SEA05LA146.md): Grumman G-164A · Jerome, ID · Accident · No injuries · Limited investigation · Final report · Jul 19, 2005 · N6702Q · Substantial damage > Failure to maintain clearance from terrain during takeoff and initial climb. A high density altitude was a factor. - [NTSB DEN01LA163](https://openairdocs.org/ntsb/DEN01LA163.md): Grumman-Schweizer G-164A · Parowan, UT · Accident · No injuries · Limited investigation · Final report · Sep 27, 2001 · N9925 · Substantial damage > the pilot's failure to maintain adequate airspeed which resulted in an inadvertent stall/mush into terrain. Contributing factors were the pilot's diverted attention, the rising terrain, and the high density altitude weather condition. - [NTSB FTW99LA095](https://openairdocs.org/ntsb/FTW99LA095.md): Grumman G-164A · Gillett, AR · Accident · Minor injuries · Limited investigation · Final report · Mar 18, 1999 · N8742H · Substantial damage > The pilot's failure to maintain terrain clearance during the downwind departure. Factors were the tailwind and the wet soft grass airstrip. - [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 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 FTW95LA361](https://openairdocs.org/ntsb/FTW95LA361.md): Grumman G-164A · Holyoke, CO · Accident · No injuries · Limited investigation · Final report · Aug 28, 1995 · N9650 · Substantial damage > the pilot's failure to maintain terrain clearance. - [NTSB FTW95LA217](https://openairdocs.org/ntsb/FTW95LA217.md): Grumman G-164A · Ville Platte, LA · Accident · No injuries · Limited investigation · Final report · May 23, 1995 · N48538 · Substantial damage > The pilot's failure to clear a levee during the approach. A factor was a truck parked on the runway. - [NTSB FTW94LA174](https://openairdocs.org/ntsb/FTW94LA174.md): Grumman G-164A · Stuttgart, AR · Accident · No injuries · Limited investigation · Final report · May 20, 1994 · N9678 · Substantial damage > Was the pilots failure to maintain terrain clearance. - [NTSB CHI94LA106](https://openairdocs.org/ntsb/CHI94LA106.md): Grumman G-164A · Sublette, KS · Accident · No injuries · Limited investigation · Final report · Mar 15, 1994 · N9686 · Substantial damage > the commercial pilot's failure to maintain clearance from terrain. Related factors are sun glare and rising terrain. - [NTSB LAX94LA099](https://openairdocs.org/ntsb/LAX94LA099.md): Grumman G-164A · Davis, CA · Accident · Serious injuries · Limited investigation · Final report · Jan 20, 1994 · N8649H · Destroyed > was that the pilot misjudged the airplane's altitude during the swath run. - [NTSB ATL92LA124](https://openairdocs.org/ntsb/ATL92LA124.md): Grumman G-164A · Ft. Gaines, GA · Accident · No injuries · Limited investigation · Final report · Jun 14, 1992 · N7357 · Substantial damage > The pilot's inadequate preflight planning/preparation. - [NTSB LAX92LA110](https://openairdocs.org/ntsb/LAX92LA110.md): Grumman G-164A · Greenfield, CA · Accident · No injuries · Limited investigation · Final report · Feb 5, 1992 · N8507H · Destroyed > The pilot's failure to maintain adequate altitude during an intentionally performed low altitude flight in mountainous terrain. Contributing factors related to the pilot's visual perception of the canyon area because of changes in the ambient lighting… - [NTSB FTW91DPG18](https://openairdocs.org/ntsb/FTW91DPG18.md): Grumman G-164A · Dewitt, AR · Accident · No injuries · Final report · Jul 31, 1991 · N5076 · Substantial damage > The pilot's failure to maintain proper glidepath. A factor was the berm at the approach end of the runway. - [NTSB SEA91LA105](https://openairdocs.org/ntsb/SEA91LA105.md): Grumman G-164A · Lapwai, ID · Accident · Serious injuries · Limited investigation · Final report · May 14, 1991 · N8792H · Destroyed > The pilot's misjudgment of an aerial application swath run. Factors include a downdraft condition and soft terrain. - [NTSB FTW91DPG06](https://openairdocs.org/ntsb/FTW91DPG06.md): Grumman G-164A · Gillett, AR · Accident · No injuries · Final report · May 14, 1991 · N9785 · Substantial damage > The windshiled becoming obscured by aerial application spray and the resultant limited vision from the cockpit. - [NTSB MIA89LA203](https://openairdocs.org/ntsb/MIA89LA203.md): Grumman G-164A · Schlater, MS · Accident · No injuries · Limited investigation · Final report · Jul 19, 1989 · N4579 · Substantial damage > Inadequate preflight planning/preparation by the pilot which resulted in the selection of the wrong runway. The tailwindand dirt bank were considered to be contributing factors. - [NTSB MKC89LA089](https://openairdocs.org/ntsb/MKC89LA089.md): Grumman G-164A · Osceola, AR · Accident · Minor injuries · Limited investigation · Final report · Apr 13, 1989 · N7245 · Substantial damage > Improper planning/decision by the pilot, and his misjudgement of clearance between the airplane, wires, and the ground during the aerial application maneuver. Factors relating to the accident were: the dirty windshield, sunglare, transmission line (wires),… - [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 DEN87LA192](https://openairdocs.org/ntsb/DEN87LA192.md): Grumman G-164A · Romeo, CO · Accident · No injuries · Limited investigation · Final report · Jul 22, 1987 · N5398 · Substantial damage > The plt reports that the acft encountered a downdraft during the turn around following a swath run. The aircraft began to settle and collided with the ground, bounced, hit a second time and nosed over. The aircraft was loaded with 280 gals of amine and 70… - [NTSB MIA87LA211](https://openairdocs.org/ntsb/MIA87LA211.md): Schweizer G-164A · Greenwood, MS · Accident · No injuries · Limited investigation · Final report · Jul 20, 1987 · N10AA · Substantial damage > Shortly after takeoff from a 1,800 ft grass strip on a 93 degree f day, the acft, loaded with 1,500 pounds of chemical, began to settle. It then touched down in a field, nosed over & came to rest inverted. The plt stated there was no eng failure or… - [NTSB MIA87FA160](https://openairdocs.org/ntsb/MIA87FA160.md): Schweizer G-164A · Dundee, MS · Accident · 1 fatal · Field investigation · Final report · May 19, 1987 · N4654 · Destroyed > While spraying a rice field, the acft was flying across svrl small dirt banks that had been furrowed for water ctl. Drg a swath run, it struck 3 furrowed banks that were close together, flipped over as it crashed, then burned. Witnessesrprtd the eng was… - [NTSB MKC84FCA01](https://openairdocs.org/ntsb/MKC84FCA01.md): Grumman-Schweizer G-164A · Neelyville, MO · Accident · Serious injuries · Final report · Jul 23, 1984 · N5307 · No damage > The plt stated that after takeoff & two miles from the destination airport, the plt started a 180 deg turn to the rt to return to the takeoff strip. Approx halfway through the turn at 45 deg of bank, the rt wing pitched downward & he was unable to correct by… - [NTSB MKC84LA200](https://openairdocs.org/ntsb/MKC84LA200.md): Grumman G164A · Bernie, MO · Accident · Minor injuries · Limited investigation · Final report · Jul 3, 1984 · N4796 · Substantial damage > Descending out of the procedure turn into a swath run the plt was unable to level the acft in time to avoid flying into the bean field. The acft nosed over on impact and caught fire. Density altitude was about 2,800 ft. acft gross weight was aprx 5,500… - [NTSB FTW84LA225](https://openairdocs.org/ntsb/FTW84LA225.md): Grumman G164A · Fenton, LA · Accident · No injuries · Limited investigation · Final report · May 7, 1984 · N48377 · Destroyed > The acft, while maneuvering at low alt, hit the ground and flipped inverted. The plt reported encountering a strong downdraft over a wooded area and in maneuvering to avoid the trees, the acft settled to the ground. The plt reported winds from 225 degrees at… - [NTSB SEA84LA097](https://openairdocs.org/ntsb/SEA84LA097.md): Grumman G-164A · Hermiston, OR · Accident · No injuries · Limited investigation · Final report · Apr 28, 1984 · N4897 · Substantial damage > During a beginning swath run, the plt was making a left skidding turn to follow the edge of a circular field. He stated that the acft encountered a downdraft which raised the right wing. Subsequently, the left wing contacted the ground & the acft crashed. - [NTSB FTW82FPG18](https://openairdocs.org/ntsb/FTW82FPG18.md): Grumman G-164A · Casa, AR · Accident · Serious injuries · Final report · Jul 12, 1982 · N4657 · Destroyed > The aircraft collided with rising terrain during a procedure turn. While spraying a rice field. - [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 FTW82DA205](https://openairdocs.org/ntsb/FTW82DA205.md): Grumman G-164A · Angleton, TX · Accident · No injuries · Final report · Jun 1, 1982 · N8974H · Destroyed > While concentrating on his flagger, the pilot misjudged his altitude and allowed the aircraft to collide with a levee. The pilot then dumped his load and made an emergency landing, during which time, the aircraft nosed over. ## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('3952801') AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 230)) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?model=3952801&occurrence=230 --- 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.