NTSB investigations: Grumman Acft ENG Cor-Schweizer G-164B
19 cases on aircraft the registry lists as Grumman Acft ENG Cor-Schweizer G-164B, where the first occurrence was “Loss of engine power(partial) - 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
| 1983 | 2 |
|---|---|
| 1984 | 1 |
| 1986 | 3 |
| 1987 | 3 |
| 1988 | 1 |
| 1989 | 1 |
| 1990 | 1 |
| 1992 | 1 |
| 1994 | 1 |
| 1997 | 1 |
| 1999 | 1 |
| 2000 | 1 |
| 2001 | 1 |
| 2002 | 1 |
Where
Open the mapLatest 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\" = 352))
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."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" = 352))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun 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 SEA02LA121Accident · Minor injuriesLimited investigationFinal reportGrumman-Schweizer G-164B · Shelley, IDA loss of engine power due to the manufacturer's improperly machined threads, which prevented the cylinder base/head halves from being properly assembled, leading to fatigue propagation and the ultimate separation of the cylinder. A contributing factor was…NTSB LAX01LA195Accident · Serious injuriesLimited investigationFinal reportSchweizer G-164B · Butte City, CAa fatigue failure of a propeller bolt.NTSB FTW00LA239Accident · No injuriesLimited investigationFinal reportGrumman-Schweizer G-164B · Kaplan, LAthe failure of the supercharger during takeoff. A contributing factor was the lack of suitable terrain for the forced landing.NTSB CHI99LA162Accident · No injuriesLimited investigationFinal reportGrumman-Schweizer G-164B · Buxton, NDthe number one cylinder's separation, the pilot's visual lookout not possible through the oil given off by the number one cylinder, and the embankment. A factor in the accident was the oil.NTSB MIA97LA190Accident · No injuriesLimited investigationFinal reportSchweizer G-164B · Edwards, MSfailure of the distributor drive gear in the right magneto, resulting in loss of engine power and a forced landing. The lack of suitable terrain for a forced landing was a related factor.NTSB MIA94LA218Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Greenwood, MSThe improper decision of the pilot to execute a precautionary landing to an unprepared field due to a supercharger shaft failure.NTSB CHI92DTG04Accident · No injuriesFinal reportGrumman G-164B · Grandin, NDThe cracked cylinder which resulted in a forced landing. The lack of suitable terrain on which to make an emergency landing was a factor.NTSB FTW90DRD05Accident · No injuriesFinal reportSchweizer G-164B · Reeves, LALoss of engine power due to a frozen rocker arm.NTSB FTW89DRA08Accident · Minor injuriesFinal reportGrumman-Schweizer G-164B · Anahuac, TXFailure of the supercharger bearing. The dirt bank was a contributing factor.NTSB MKC88LA062Accident · No injuriesLimited investigationFinal reportGrumman G-164B · West Point, ARThe pilot said, shortly after takeoff, enroute to an aerial application operation, the engine began to lose pwr and began backfiring. He dumped a portion of his load, and made an emergency ldg in a soft, unplanted bean field. After rolling about 200 feet, the…NTSB LAX87DVA12Accident · No injuriesFinal reportGrumman G164B · Buttonwillow, CADuring 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 FTW87DRA06Accident · No injuriesFinal reportGrumman G-164B · Beaumont, TXDrg the initial climb after takeoff, the eng began losing RPM & the plt was unable to return to the arpt. He selected a pasture area for an emerg landing, but the eng contd losing power. While landing on soft terrain with tall wet grass, the acft nosed over.…NTSB FTW87DRA03Accident · No injuriesFinal reportGrumman G-164B · Egypt, TXAcft experienced a power loss drng an aerial app maneuver. During the ensuing emerg lndg, the left wing struck high weeds on the shoulder of a road, veered left into a ditch, and flipped over. Investigation revealed no. 7 cylinder had a pre-existing crack in…NTSB MKC87LA028Accident · No injuriesLimited investigationFinal reportGrumman-Schweizer G-164B-600 · Earle, ARThe pilot stated that the powerplant was performing normally during initial climb when, suddenly, the engine experienced a power loss after backfiring. Immediate remedial action resulted in a partial power output but not enough to sustain flight. Emergency…NTSB FTW86LRD16Accident · No injuriesFinal reportGrumman G-164B · Abbeville, LAThe pilot stated he made a successful forced landing, due to loss of power, and then had to flip the aircraft to prevent colliding with a lateral (above ground irrigation system) with a water depth of about four feet. Subsequent engine examination revealed…NTSB MKC86LA086Accident · No injuriesLimited investigationFinal reportGrumman G164B · Advance, MOThe airplane was being operated as an agricultural aircraft when the engine started backfiring and then quit. During the forced landing in a plowed field, the airplane flipped forward to the inverted position. Investigation revealed the teeth on the left…NTSB MKC84LA211Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Roe, ARAs a result of a supercharger failure, a partial power loss was experienced during a swath run. During the landing roll after a forced landing, the acft nosed over & came to rest inverted. An eng teardown revealed that both supercharger bearings had failed…NTSB FTW83LA405Accident · Minor injuriesLimited investigationFinal reportGrumman G-164B · East Bernard, TXDuring takeoff, the eng had a partial loss of power after the acft lifted off. The plt reported that he dumped his load of defoliant, but the acft would not climb. Subsequently, it settled & collided with brush & trees. The plt attributed the power loss to a…NTSB MIA83LA179Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Altha, FLThe plt stated that the eng began losing power during an aerial application mission. Subsequently, he landed in a muddy field & the acft nosed over. He stated that the indupartial loss of power.