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

26 cases on aircraft the registry lists as Grumman Acft ENG Cor-Schweizer G-164B, where the first occurrence was “Loss of engine power(total) - mech failure/malf”. 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.

Cases per year

19832026
NTSB investigations: Grumman Acft ENG Cor-Schweizer G-164B per year, 1983–2026: 26 cases
19831
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19931
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19953
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20062

Latest cases

Query with SQL
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.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('3952802')
      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\" = 351))
  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.

NTSB NYC06LA178Accident · No injuriesLimited investigationFinal reportGrumman-Schweizer G-164B · Frederick, MDA failure of the masterod, due to a hydraulic lock on a previous flight, which resulted in a total loss of engine power.Jul 11, 2006 · N6645Q · Substantial damageNTSB DEN06CA081Accident · Minor injuriesData collectionFinal reportGrumman G-164B · Dighton, KSThe broken rocker arm boss causing the number 1 cylinder exhaust valve to stay closed and subsequently the engine failed. A factor contributing to the accident was the soft field the airplane set down in.Jun 1, 2006 · N14RY · Substantial damageNTSB SEA02LA123Accident · No injuriesLimited investigationFinal reportGrumman-Schweizer G-164B · Weiser, IDThe fracture of the number 3 cylinder exhaust pushrod resulting in the exhaust valve's inability to open during the exhaust cycle and the subsequent engine stoppage. Contributing factors were the ditch and elevated roadway which the aircraft crossed during…Jul 6, 2002 · N8440K · Substantial damageNTSB SEA01LA149Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Quincy, WAThe failure of the impeller assembly as a consequence of impeller rub and binding within the impeller collector case for undetermined reasons.Aug 11, 2001 · N6774Q · Substantial damageNTSB LAX00LA345Accident · No injuriesLimited investigationFinal reportGrumman-Schweizer G-164B · Tracy, CALoss of engine power due to failure and separation of the number one connecting rod.Sep 22, 2000 · N8981H · Substantial damageNTSB ATL99LA017Accident · Minor injuriesLimited investigationFinal reportGrumman-Schweizer G164B · Cuthbert, GAThe fatigue failure of the accessory gear shaft which resulted in fuel starvation and the loss of engine power. A factors was the fuel system filter restriction.Nov 11, 1998 · N6656Q · DestroyedNTSB CHI96LA186Accident · No injuriesLimited investigationFinal reportGrumman-Schweizer G-164B · Crookston, MNcatastrophic engine failure.May 25, 1996 · N48518 · Substantial damageNTSB LAX96LA124Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Tracy, CAoverheating 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.Feb 21, 1996 · N6674Q · Substantial damageNTSB CHI95LA266Accident · No injuriesLimited investigationFinal reportGrumman G164B · Bloomington, NEthe disintegration of the engine's super charger bearings. Factors associated with the accident were the total failure of the engine's super charger and the unsuitable terrain surrounding the airplane's departure path encountered by the pilot.Aug 10, 1995 · N6771Q · Substantial damageNTSB FTW95LA392Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Springlake, TXThe loss of engine power due to the uncontained failure of the third stage turbine wheel. A factor was the lack of suitable terrain for the forced landing.Jun 8, 1995 · N211JM · Substantial damageNTSB LAX95LA195Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Robbins, CAa loss of engine power due to a separation of the number 6 cylinder, and the nose over during the subsequent forced landing.May 25, 1995 · N6774K · Substantial damageNTSB FTW94LA266Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Matagorda, TXA power loss due to cracked engine cylinder. A factor was the lack of suitable terrain for the forced landing.Aug 10, 1994 · N8251K · DestroyedNTSB FTW94LA177Accident · Minor injuriesLimited investigationFinal reportGrumman G-164B · Casscoe, ARThe inadvertent stall and power loss for undetermined reasons. A factor was the lack of suitable terrain for the forced landing.May 24, 1994 · N48386 · DestroyedNTSB SEA94LA072Accident · No injuriesLimited investigationFinal reportGrumman G-164 · Walla Walla, WAUnsuitable terrain for a forced landing after a loss of power due to a failed engine cylinder. Factors include a partial magneto failure.Mar 2, 1994 · N6612Q · Substantial damageNTSB CHI93LA303Accident · No injuriesLimited investigationFinal reportSchweizer G167B · Borup, MNthe loss of engine power due to a cracked cylinder head.Jul 27, 1993 · N6637Q · Substantial damageNTSB CHI92DCJ05Accident · No injuriesFinal reportGrumman-Schweizer G-164B · Atkinson, NEA cracked engine cylinder.Aug 11, 1992 · N48672 · Substantial damageNTSB SEA91LA136Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Wilson Creek, WAThe loss of engine power in flight due to improper overhaul of the carburetor float assembly fulcrum screw, shutting off fuel flow to the engine.May 27, 1991 · N8407K · Substantial damageNTSB LAX90DVA04Accident · Serious injuriesFinal reportGrumman-Schweizer G-164B · Buttonwillow, CAFailure of the #7 cylinder due to a pre-existing crack. The terrain condition was a related factor.Jun 8, 1990 · N6725K · DestroyedNTSB MKC89LA170Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Portland, AREngine failure due to failure of an engine cylinder.Jul 28, 1989 · N8116K · Substantial damageNTSB MKC89LA148Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Stockville, NETotal failure of the powerplant caused by a broken cylinder.Jul 2, 1989 · N6629Q · Substantial damageNTSB FTW89DRD08Accident · Minor injuriesFinal reportSchweizer G-164B · Kaplan, LALoss of engine power due to a cracked cylinder.Jun 16, 1989 · N48592 · DestroyedNTSB FTW89DRD06Accident · No injuriesFinal reportGrumman-Schweizer G-164B · Ville Platte, LAWear and/or failure of the carburetor/float. Factors related to the accident were: the terrain conditions.Jun 6, 1989 · N6693Q · Substantial damageNTSB LAX84LA338Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Tracy, CAThe 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.Jun 7, 1984 · N6708K · Substantial damageNTSB ATL84FA105Accident · 1 fatalField investigationFinal reportGrumman G-164B · Dawson, GAA failed cylinder head assembly resulted in a total power loss very shortly after takeoff. Witnesses observed the aerial application acft at 30-50 ft AGL over the rwy before it pulled up steeply, rolled and entered a near vertical uncontrolled descent to…Feb 19, 1984 · N6558K · DestroyedNTSB MIA84LA060Accident · Minor injuriesLimited investigationFinal reportGrumman AG-CAT · Homestead, FLThe acft crashed during a forced landing after the engine lost power. Investigation revealed that that # 8 cylinder failed. The original cracking was determined to be from fatigue.Jan 16, 1984 · N6736Q · DestroyedNTSB ATL83LA168Accident · Minor injuriesLimited investigationFinal reportGrumman G-164B · New Hope, ALThe acft collided with trees during a forced landing following an engine failure. The pilot stated that during a pull-upafter spraying a field the engine made a loud bang and smoke and oil began to pour out of the engine. Then the engine froze and the pilot…Apr 21, 1983 · N6756Q · Substantial damage