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NTSB investigations: Schweizer G-164B, CA

38 cases on aircraft the registry lists as Schweizer G-164B. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.

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19882026

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Query with 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 ('8059055')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

duckdb -csv -c "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 ('8059055'))
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

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 ('8059055'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.

NTSB WPR25LA158Accident · Minor injuriesClass 4 · LimitedFinal reportSchweizer G-164B · Butte City, CAThe pilot’s use of engine beta prior to ensuring the tailwheel was on the ground during landing roll.May 9, 2025 · N7503L · Substantial damage NTSB ANC24FA038Accident · 1 fatalClass 3 · FieldFinal reportSchweizer G-164B · Richvale, CAThe pilot’s failure to maintain clearance from a trailer located on the edge of the runway during takeoff. Contributing to the accident was the location of the trailer on the side of the runway.May 28, 2024 · N3629Y · Substantial damage NTSB WPR21LA299Accident · No injuriesClass 3 · LimitedFinal reportSchweizer G-164B · Tracy, CAA loss of thrust during a low-level agricultural application flight, which resulted in a descent and impact with terrain. The reason for the loss of thrust could not be determined based on available information.Jul 30, 2021 · N3629F · Substantial damage NTSB WPR20LA175Accident · Minor injuriesClass 3 · LimitedFinal reportGrumman G164 · Lincoln, CAThe pilot’s loss of directional control on takeoff for undetermined reasons.Jun 4, 2020 · N8486K · Substantial damage NTSB WPR19LA137Accident · No injuriesClass 3 · LimitedFinal reportGrumman G164 · Sutter, CAA loss of engine power due to the in-flight separation of the fuel control unit interconnect rod for reasons that could not be determined due to lack of available evidence.May 5, 2019 · N3630D · Substantial damage NTSB WPR18LA113Accident · 1 fatalLimited investigationFinal reportSchweizer G 164B · Stockton, CAThe pilot's failure to maintain clearance with power lines while maneuvering during an aerial application flight.Mar 27, 2018 · N3629E · Substantial damage NTSB WPR18LA015Accident · No injuriesLimited investigationFinal reportSchweizer G 164B · Tracy, CAThe pilot's failure to maintain directional control of the airplane during the landing roll.Oct 24, 2017 · N8494K · Substantial damage NTSB WPR14LA322Accident · 1 fatalLimited investigationFinal reportSchweizer G 164B · Tulelake, CAThe pilot's failure to maintain clearance from power lines while maneuvering during low-altitude operations.Aug 1, 2014 · N3627R · Destroyed NTSB WPR14LA201Accident · No injuriesLimited investigationFinal reportSchweizer G 164B · Biggs, CAThe assembler’s improper fabrication of a fuel line (hose) and the subsequent failure to verify that it was not occluded, which resulted in fuel starvation and a total loss of engine power during takeoff.May 13, 2014 · N3633C · Substantial damage NTSB WPR13LA223Accident · 1 fatalLimited investigationFinal reportSchweizer G-164B · Biggs, CAThe pilot’s failure to adequately monitor the runway environment during taxi, which resulted in an on-ground collision.May 9, 2013 · N8214S · Minor damage NTSB WPR11LA320Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Yuba City, CAHigh-cycle fatigue on the 1st-stage compressor blade retaining ring, which resulted in the ring’s fracture and a subsequent loss of engine power.Jul 9, 2011 · N7503L · Substantial damage NTSB WPR11LA273Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Marysville, CAThe separation of the right main landing gear during takeoff, due to fatigue.Jun 21, 2011 · N3627G · Substantial damage NTSB WPR10LA253Accident · Serious injuriesLimited investigationFinal reportSchweizer G-164B · Robbins, CAThe failure of the wheel hub flange, which allowed the over size tire to expand and impinge on the brake disc and caliper, which resulted in a loss of control during the landing.May 21, 2010 · N3633C · Substantial damage NTSB WPR10LA125Accident · No injuriesLimited investigationFinal reportSchweizer G164B · Byron, CAA loss of engine power due to carburetor icing as a result of the pilot's failure to use carburetor heat.Feb 23, 2010 · N8494K · Substantial damage NTSB WPR09CA114Accident · No injuriesData collectionFinal reportSchweizer G-164B · Buttonwillow, CAA loss of engine power due to the number four cylinder base nuts becoming loose, allowing the cylinder to detach from the engine case. Contributing to the accident was the pilot's impaired visibility due to smoke during the forced landing.Feb 12, 2009 · N3626T · Substantial damage NTSB LAX07LA168Accident · 1 fatalLimited investigationFinal reportSchweizer G-164B · Colusa, CAThe pilot's failure to maintain clearance from wires.May 13, 2007 · N3633Q · Destroyed NTSB LAX04LA267Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Richvale, CAthe loss of engine power during takeoff due to the engine's deteriorated fuel control unit's inner drive shaft bearing. The reason for the bearing's deteriorated condition could not be determined.Jun 7, 2004 · N3626T · Substantial damage NTSB LAX02LA216Accident · No injuriesLimited investigationFinal reportGrumman-Schweizer G-164B · Sacramento, CAPropeller blade failure due to fatigue. A contributing factor was the rising embankment.Jul 6, 2002 · N3631B · Substantial damage NTSB LAX01LA228Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Meridian, CAThe pilot's misjudged and inadequate altitude while maneuvering during an aerial application flight.Jun 27, 2001 · N2236F · Substantial damage NTSB LAX00LA344Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Corcoran, CAThe pilot's inadequate preflight inspection and his failure to maintain directional control during takeoff. Factors were the pilot's failure to ensure that the fuel tank cover was replaced properly, fuel contamination of the windscreen, and the sun angle that…Sep 21, 2000 · N3626T · Substantial damage NTSB LAX00LA278Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Tracy, CAA loss of engine power for undetermined reasons.Jul 26, 2000 · N3629E · Substantial damage NTSB LAX00LA162Accident · Minor injuriesLimited investigationFinal reportSchweizer G-164B · Lodi, CAA loss of engine power for undetermined reasons.Apr 20, 2000 · N3629F · Substantial damage NTSB LAX97LA212Accident · Serious injuriesLimited investigationFinal reportSchweizer G-164B · Rio Linda, CAthe pilot's inadequate preflight planning/preparation by failing to ensure that sufficient airspeed would be obtained and/or maintained to remain clear of obstacles at the departure end of the runway. The obstacles (power lines & poles) were a related factor.Jun 16, 1997 · N3631G · Substantial damage NTSB LAX97LA121Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Winters, CAthe failure of the engine cylinder head assembly due to operational fatigue.Mar 11, 1997 · N36265 · Substantial damage NTSB LAX96LA214Accident · Serious injuriesLimited investigationFinal reportSchweizer G-164B · Corning, CAthe pilot misjudged the airplane's clearance from wires he was flying beneath. A contributing factor was the presence of light turbulence.May 30, 1996 · N3626D · Substantial damage NTSB LAX94LA299Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Live Oak, CAthe improper adjustment of the fuel control unit by contract maintenance personnel.Jul 27, 1994 · N3627Q · Substantial damage NTSB SEA94LA117Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Yuba City, CAAn inadvertent stall/mush after takeoff. The over-weight loading of the aircraft was a factor.May 12, 1994 · N8214S · Substantial damage NTSB LAX94LA213Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Gridley, CAa loss of engine power due to a cracked engine cylinder head.May 8, 1994 · N3629E · Substantial damage NTSB LAX94LA133Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Clarksburg, CAThe total failure of the no. 1 cylinder due to fatigue resulting from an improperly adjusted mixture causing detonation. The soft, wet plowed field was a factor in this accident.Feb 23, 1994 · N36265 · Substantial damage NTSB LAX94LA019Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Arvin, CAthe loss of power for undetermined reasons.Oct 19, 1993 · N7501K · Substantial damage NTSB LAX92LA126Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Dixon, CAThe pilot's premature lift-off. Contributing to the accident was the inadvertent stall/mush and the soft dirt airstrip.Feb 25, 1992 · N3633C · Substantial damage NTSB LAX91LA362Accident · No injuriesLimited investigationFinal reportSchweizer G164B · Verona, CAThe pilot's improper planning/decision to depart from a runway with high vegetation along the edge and subsequent collision with terrain.Aug 19, 1991 · N7501K · Substantial damage NTSB LAX90DVG01Accident · No injuriesFinal reportSchweizer G-164B · Grimes, CAFailure of the counter weight bracket to the propeller assembly.Nov 16, 1989 · N3633Q · Substantial damage NTSB LAX89DVG07Accident · No injuriesFinal reportSchweizer G-164B · Willows, CAFailure of the connecting rod on #1 cylinder of the aircraft powerplant.Jul 4, 1989 · N3627G · Substantial damage NTSB LAX89DVG06Accident · No injuriesFinal reportGrumman G-164B · Davis, CAThe pilot failed to properly use his brakes during the off airport landing.May 14, 1989 · N3629Y · Substantial damage NTSB LAX88DVG09Accident · No injuriesFinal reportSchweizer G-164B · Robbins, CADuring landing roll, after an aerial application flight, the sprayboom became entangled in weeds. The airplane ground looped and nosed over. There were no reported mechanical failures or malfunctions of the airplane at the time of the accident.Jul 30, 1988 · N3633C · Substantial damage NTSB LAX88DVG05Accident · No injuriesFinal reportSchweizer G-164B · Gridley, CAJun 20, 1988 · N8487K · Destroyed NTSB LAX88DVG03Accident · No injuriesFinal reportSchweizer G-164B · Gridley, CADuring an agricultural operation, the engine quit at approximately 50 feet AGL. The airplane was landed on a dirt field and nosed over. Inspection of the engine revealed that the left magneto drive gear teeth were missing and the right magneto drive gear was…May 2, 1988 · N3627Q · Substantial damage