# NTSB investigations: Grumman Acft ENG Cor-Schweizer G-164B, CA

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 2 · 65 cases

## Latest cases

- [NTSB WPR24LA282](https://openairdocs.org/ntsb/WPR24LA282.md): Grumman Acft ENG Cor-Schweizer G-164B · Durham, CA · Accident · Serious injuries · Class 4 · Limited · Final report · Aug 13, 2024 · N6633K · Substantial damage
  > The pilot’s failure to maintain clearance from powerlines, which resulted in a wire strike.
- [NTSB WPR24LA214](https://openairdocs.org/ntsb/WPR24LA214.md): Grumman Acft ENG Cor-Schweizer G-164B · Pleasant Grove, CA · Accident · No injuries · Class 3 · Limited · Final report · Jun 25, 2024 · N6793K · Substantial damage
  > The pilot’s delayed recognition of the extent of the airplane’s increased takeoff roll. Contributing to the accident was the pilot’s lack of experience operating the airplane at a high gross weight.
- [NTSB WPR24LA151](https://openairdocs.org/ntsb/WPR24LA151.md): Grumman G164 · Maxwell, CA · Accident · Serious injuries · Class 4 · Limited · Final report · May 12, 2024 · N6612Q · Destroyed
  > The pilot’s failure to ascertain a proper touchdown point and late decision to initiate a go-around, which resulted in a subsequent collision with vegetation.
- [NTSB WPR23LA212](https://openairdocs.org/ntsb/WPR23LA212.md): Grumman Acft ENG Cor-Schweizer G-164B · Colusa, CA · Accident · Serious injuries · Class 4 · Limited · Final report · Jun 4, 2023 · N6750K · Substantial damage
  > The pilot’s failure to maintain clearance from a power line during a low-level aerial application flight. Contributing to the accident was the pilot’s fatigue.
- [NTSB WPR23LA120](https://openairdocs.org/ntsb/WPR23LA120.md): Grumman Acft ENG Cor-Schweizer G-164B · Vernalis, CA · Accident · Serious injuries · Class 4 · Limited · Final report · Mar 3, 2023 · N48492 · Substantial damage
  > The pilot’s failure to maintain clearance from a power line during a low-level aerial application flight.
- [NTSB WPR18LA189](https://openairdocs.org/ntsb/WPR18LA189.md): Grumman G164B · Colusa, CA · Accident · No injuries · Class 3 · Limited · Final report · Jul 9, 2018 · N6696K · Substantial damage
  > Total loss of engine power for reasons that could not be determined based on the available information.
- [NTSB WPR15LA230](https://openairdocs.org/ntsb/WPR15LA230.md): Grumman G164 - B · Princeton, CA · Accident · No injuries · Limited investigation · Final report · Aug 4, 2015 · N48452 · Substantial damage
  > The loss of engine power during an agricultural application flight due to a cylinder failure.
- [NTSB WPR14CA293](https://openairdocs.org/ntsb/WPR14CA293.md): Grumman Acft ENG Cor-Schweizer G 164B · Marysville, CA · Accident · No injuries · Data collection · Final report · Jul 14, 2014 · N48475 · Substantial damage
  > The pilot's failure to adequately monitor the environmental conditions to assure the aircraft performance would afford an uneventful takeoff with the loading conditions. Contributing to the accident were the pilot's inability to jettison the load due to the…
- [NTSB WPR11CA128](https://openairdocs.org/ntsb/WPR11CA128.md): Schweizer G-164B · Buttonwillow, CA · Accident · No injuries · Data collection · Final report · Feb 5, 2011 · N6725K · Substantial damage
  > The pilot's failure to maintain clearance from an irrigation vent pipe.
- [NTSB WPR10LA396](https://openairdocs.org/ntsb/WPR10LA396.md): Grumman G164 · Tracy, CA · Accident · No injuries · Limited investigation · Final report · Aug 11, 2010 · N6781K · Substantial damage
  > A total loss of engine power while maneuvering due to an internal catastrophic failure to the master rod and piston connecting rod links.
- [NTSB WPR10CA289](https://openairdocs.org/ntsb/WPR10CA289.md): Grumman Acft ENG Cor-Schweizer G-164B · Courtland, CA · Accident · Serious injuries · Data collection · Final report · Jun 13, 2010 · N6726Q · Substantial damage
  > The pilot's failure to maintain clearance from terrain during low-altitude maneuvers.
- [NTSB WPR09CA393](https://openairdocs.org/ntsb/WPR09CA393.md): Grumman Acft ENG Cor-Schweizer G-164B · Westley, CA · Accident · No injuries · Data collection · Final report · Aug 13, 2009 · N6697Q · Substantial damage
  > The pilot’s inadequate preflight planning and preparation, and his decision to operate the airplane well in excess of its maximum gross weight.
- [NTSB WPR09LA228](https://openairdocs.org/ntsb/WPR09LA228.md): Ayres S2R-T34 · Marysville, CA · Accident · Serious injuries · Limited investigation · Final report · May 6, 2009 · N40208 · 2 aircraft · Substantial damage
  > The failure of both pilots to see and avoid the other airplane while making their final approach for landing.
- [NTSB LAX08CA223](https://openairdocs.org/ntsb/LAX08CA223.md): Grumman Acft Eng G-164B · Patterson, CA · Accident · Minor injuries · Data collection · Final report · Jul 10, 2008 · N6792Q · Substantial damage
  > The pilot's failure to maintain clearance from obstacles while maneuvering.
- [NTSB LAX06LA169](https://openairdocs.org/ntsb/LAX06LA169.md): Grumman G-164B · Tracy, CA · Accident · No injuries · Limited investigation · Final report · May 15, 2006 · N8981H · Substantial damage
  > loss of power for undetermined reasons.
- [NTSB LAX04LA126](https://openairdocs.org/ntsb/LAX04LA126.md): Grumman-Schweizer G-164B · Tracy, CA · Accident · No injuries · Limited investigation · Final report · Feb 17, 2004 · N6774K · Substantial damage
  > A loss of engine power for undetermined reasons during cruise flight.
- [NTSB LAX02LA232](https://openairdocs.org/ntsb/LAX02LA232.md): Grumman-Schweizer G-164B · Knights Landing, CA · Accident · No injuries · Limited investigation · Final report · Jul 20, 2002 · N6794K · Substantial damage
  > The pilot's inadequate visual lookout, resulting in an in-flight collision with wires.
- [NTSB LAX02LA125](https://openairdocs.org/ntsb/LAX02LA125.md): Schweizer G-164B · Dixon, CA · Accident · No injuries · Limited investigation · Final report · Mar 7, 2002 · N48631 · Substantial damage
  > The pilot lost directional control due to the unsuitable landing area. A contributing factor was the muddy runway condition.
- [NTSB LAX01LA195](https://openairdocs.org/ntsb/LAX01LA195.md): Schweizer G-164B · Butte City, CA · Accident · Serious injuries · Limited investigation · Final report · May 31, 2001 · N6902K · Substantial damage
  > a fatigue failure of a propeller bolt.
- [NTSB LAX00LA345](https://openairdocs.org/ntsb/LAX00LA345.md): Grumman-Schweizer G-164B · Tracy, CA · Accident · No injuries · Limited investigation · Final report · Sep 22, 2000 · N8981H · Substantial damage
  > Loss of engine power due to failure and separation of the number one connecting rod.
- [NTSB LAX00LA285](https://openairdocs.org/ntsb/LAX00LA285.md): Grumman G-164B · Tracy, CA · Accident · 1 fatal · Limited investigation · Final report · Aug 1, 2000 · N6737K · Destroyed
  > The pilot's failure to maintain adequate clearance from obstacles while maneuvering during an aerial application flight.
- [NTSB LAX00LA246](https://openairdocs.org/ntsb/LAX00LA246.md): Grumman G-164B · King City, CA · Accident · No injuries · Limited investigation · Final report · Jul 3, 2000 · N48456 · Destroyed
  > The loss of engine power for undetermined reasons.
- [NTSB LAX96LA124](https://openairdocs.org/ntsb/LAX96LA124.md): Schweizer G-164B · Tracy, CA · Accident · No injuries · Limited investigation · Final report · Feb 21, 1996 · N6674Q · Substantial damage
  > overheating and failure of the engine's master rod and master rod bearing due to oil starvation. A factor relating to the accident was: the lack of suitable terrain for an emergency landing.
- [NTSB LAX96LA012](https://openairdocs.org/ntsb/LAX96LA012.md): Grumman G-164B · Lost Hills, CA · Accident · Minor injuries · Limited investigation · Final report · Oct 16, 1995 · N8247K · Destroyed
  > the pilot misjudged the aircraft's altitude.
- [NTSB LAX95LA195](https://openairdocs.org/ntsb/LAX95LA195.md): Grumman G-164B · Robbins, CA · Accident · No injuries · Limited investigation · Final report · May 25, 1995 · N6774K · Substantial damage
  > a loss of engine power due to a separation of the number 6 cylinder, and the nose over during the subsequent forced landing.
- [NTSB LAX94LA205](https://openairdocs.org/ntsb/LAX94LA205.md): Grumman G-164B · Robbins, CA · Accident · No injuries · Limited investigation · Final report · Apr 23, 1994 · N6774K · Substantial damage
  > The pilot's improper use of the brakes.
- [NTSB LAX94LA155](https://openairdocs.org/ntsb/LAX94LA155.md): Grumman G-164B · Chico, CA · Accident · No injuries · Limited investigation · Final report · Mar 4, 1994 · N6528K · Substantial damage
  > the failure of the pilot to obtain/maintain sufficient flying speed during a downwind takeoff and climb, compounded by his reluctance to use full available takeoff power.
- [NTSB LAX93LA226](https://openairdocs.org/ntsb/LAX93LA226.md): Grumman G-164B · Madera, CA · Accident · No injuries · Limited investigation · Final report · May 26, 1993 · N48632 · Destroyed
  > The pilot's failure to maintain directional control. A factor related to this accident was the left quartering tailwind.
- [NTSB LAX92LA325](https://openairdocs.org/ntsb/LAX92LA325.md): Schweizer G-164B · Visalia, CA · Accident · No injuries · Limited investigation · Final report · Jul 30, 1992 · N6892K · Substantial damage
  > The pilot's improper stowage of an aerosol spray can in the cockpit which caused an electrical short and an ensuing fire, and his failure to maintain directional control of the aircraft during the subsequent aborted takeoff.
- [NTSB LAX92LA259](https://openairdocs.org/ntsb/LAX92LA259.md): Grumman G-164B · Robbins, CA · Accident · No injuries · Limited investigation · Final report · Jun 23, 1992 · N48658 · Substantial damage
  > The failure of the pilot to maintain an adequate wing tip clearance between the aircraft and a dirt bank paralleling the airstrip.
- [NTSB LAX92LA215](https://openairdocs.org/ntsb/LAX92LA215.md): Schweizer G-164B · Live Oak, CA · Accident · No injuries · Limited investigation · Final report · May 24, 1992 · N8412K · Substantial damage
  > The pilot's failure to maintain directional control and improper use of the brakes.
- [NTSB LAX91LA299](https://openairdocs.org/ntsb/LAX91LA299.md): Grumman G-164B · Crows Landing, CA · Accident · No injuries · Limited investigation · Final report · Jul 9, 1991 · N6628Q · Destroyed
  > The pilot Landing his airplane erroneously on the wrong Landing surface. Factors in this accident were: sunglare and its interference with the pilot's vision and the soft terrain.
- [NTSB LAX91LA214](https://openairdocs.org/ntsb/LAX91LA214.md): Grumman G164B · Yuba City, CA · Accident · Minor injuries · Limited investigation · Final report · May 14, 1991 · N48658 · Substantial damage
  > Fatigue in the propeller blade which led to its ultimate failure. Factors relating to this accident were the soft terrain conditions on which the airplane landed and a berm across the airplane's ground path.
- [NTSB LAX90DVA10](https://openairdocs.org/ntsb/LAX90DVA10.md): Grumman-Schweizer G-164B · Westley, CA · Accident · Serious injuries · Final report · Aug 19, 1990 · N6774Q · Destroyed
  > The pilot's failure maintain obstacle clearance.
- [NTSB LAX90DVA04](https://openairdocs.org/ntsb/LAX90DVA04.md): Grumman-Schweizer G-164B · Buttonwillow, CA · Accident · Serious injuries · Final report · Jun 8, 1990 · N6725K · Destroyed
  > Failure of the #7 cylinder due to a pre-existing crack. The terrain condition was a related factor.
- [NTSB LAX90DVG08](https://openairdocs.org/ntsb/LAX90DVG08.md): Schweizer G-164-B · Richvale, CA · Accident · No injuries · Final report · May 6, 1990 · N6689K · Substantial damage
  > The pilot in command's failure to maintain a positive rate of climb during takeoff resulting in the aircraft descending into terrain.
- [NTSB LAX90DUG05](https://openairdocs.org/ntsb/LAX90DUG05.md): Grumman G-164B · Blythe, CA · Accident · 1 fatal · Final report · Apr 19, 1990 · N6708K · 2 aircraft · Destroyed
  > Failure of the pilots of N6708K and N10222 to maintain adequate visual lookout and failure of the pilot of N6708K to follow a prearanged procedure for reversing the direction of flight.
- [NTSB LAX90DVG04](https://openairdocs.org/ntsb/LAX90DVG04.md): Grumman G-164B · Esparto, CA · Accident · 1 fatal · Final report · Apr 4, 1990 · N8011K · Destroyed
  > The pilot misjudged the airplane's clearance with the transmission wires.
- [NTSB LAX90DVG02](https://openairdocs.org/ntsb/LAX90DVG02.md): Schweizer G-164B · Knights Landing, CA · Accident · No injuries · Final report · Nov 18, 1989 · N6977K · Substantial damage
  > The failure of the right main Landing gear due to a sheared bolt that attached the spring leg to the gear.
- [NTSB LAX89DVA08](https://openairdocs.org/ntsb/LAX89DVA08.md): Schweizer G-164B · Livingston, CA · Accident · No injuries · Final report · Jul 18, 1989 · N8371K · Destroyed
  > The pilot's decision to attempt a takeoff on unsuitable terrain. A factor was the water on the airstrip.
- [NTSB LAX89DVA05](https://openairdocs.org/ntsb/LAX89DVA05.md): Grumman G-164B · Westley, CA · Accident · Serious injuries · Final report · Mar 18, 1989 · N6713Q · Substantial damage
  > A loss of engine power for undetermined reasons. A factor related to the accident was the proximity of obstructions.
- [NTSB LAX87DVA12](https://openairdocs.org/ntsb/LAX87DVA12.md): Grumman G164B · Buttonwillow, CA · Accident · No injuries · Final report · Sep 22, 1987 · N6607Q · Substantial damage
  > During an aerial application flight, after pulling out of a pass over a field the plt heard a loud bang followed by severe engine vibration. The acft lost power and the pilot made a forced landing in a plowed field. During the landing roll the acft nosed…
- [NTSB LAX87DVA10](https://openairdocs.org/ntsb/LAX87DVA10.md): Grumman G-164B · Taft, CA · Accident · No injuries · Final report · Jul 29, 1987 · N6725K · Substantial damage
  > During a repositioning flight, the plt landed the aircraft on a dirt road. During the landing roll the left wing struck an irrigation standpipe. The aircraft turned rapidly which collapsed the main landing gear. There were no mechancial failures or…
- [NTSB LAX87DVG03](https://openairdocs.org/ntsb/LAX87DVG03.md): Grumman G-164B · Marysville, CA · Accident · No injuries · Final report · Apr 18, 1987 · N8412K · Substantial damage
  > At the end of an aerial application flt, the plt was aware of a cross wind from the right. The plt touched the acft down on the right main landing gear and held that attitude for aprx 300 ft down the rwy. When the left main gear contacted the rwy it folded…
- [NTSB LAX84LA417](https://openairdocs.org/ntsb/LAX84LA417.md): Grumman G-164B · Delhi, CA · Accident · No injuries · Limited investigation · Final report · Jul 28, 1984 · N6711Q · Destroyed
  > The plt took off so early it was described by a witness as still being dark. The elevation of the accident was higher than the takeoff point. The operator said the plt tended to be easy on the equipment and throttled back shortly after takeoff. He stated that…
- [NTSB LAX84LA338](https://openairdocs.org/ntsb/LAX84LA338.md): Grumman G-164B · Tracy, CA · Accident · No injuries · Limited investigation · Final report · Jun 7, 1984 · N6708K · Substantial damage
  > The acft lost power during takeoff & nosed over in a wheat field. An exam revealed that the #7 cylinder head was cracked from the rear spark plug hole, 3/4 of the circumference around the exhaust valve.
- [NTSB LAX84LA084](https://openairdocs.org/ntsb/LAX84LA084.md): Grumman G-164B · Madera, CA · Accident · No injuries · Limited investigation · Final report · Nov 30, 1983 · N31184 · Substantial damage
  > At about 75 ft AGL in a procedure turnaround the acft stalled & collided with orange trees.
- [NTSB LAX83LA464](https://openairdocs.org/ntsb/LAX83LA464.md): Grumman 164B · Tracy, CA · Accident · No injuries · Limited investigation · Final report · Sep 30, 1983 · N6708K · Substantial damage
  > The acft crashed during a forced landing shortly after takeoff when the engine lost power at about 10 ft AGL. Heavy rainhad fallen the night before and the acft are generally parked outside. After the engine lost power the plt landed off the end of the rwy…
- [NTSB LAX83LA222](https://openairdocs.org/ntsb/LAX83LA222.md): Grumman 164B · Lodi, CA · Accident · No injuries · Limited investigation · Final report · May 7, 1983 · N6530K · Destroyed
  > The aircraft was rolling for takeoff at dawn when it collided with another crop duster taxiing in the opposite directionthe aircraft taking off had rolled about 100 feet when the pilot saw a red light on the runway and aborted the takeoff and attempted to…
- [NTSB LAX83LA172](https://openairdocs.org/ntsb/LAX83LA172.md): Grumman American G164-B · Near Madera, CA · Accident · Minor injuries · Limited investigation · Final report · Apr 1, 1983 · N31184 · Substantial damage
  > The acft hit a chuck hole in high grass during takeoff roll from a field for an aerial application mission. The left landing gear separated from the acft. The weather was VMC and no flight plan was filed. The pilot sustained minor injuries. The flight was…

Next page: https://openairdocs.org/ntsb.md?model=3952802&state=CA&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" = 'CA' 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 ('3952802'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=3952802&state=CA

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