# NTSB investigations: Grumman Acft ENG Cor-Schweizer G-164A: Powerplant sys/comp malf/fail

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 ERA22LA297](https://openairdocs.org/ntsb/ERA22LA297.md): Grumman G-164A · Hopewell Township, NJ · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 2, 2022 · N8923H · Substantial damage
  > A partial loss of engine power while maneuvering at low altitude due to a failure of the airplane’s supercharger.
- [NTSB ERA16LA319](https://openairdocs.org/ntsb/ERA16LA319.md): Grumman G164 · Chestertown, MD · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 18, 2016 · N75EP · Substantial damage
  > Loss of engine power due to a failure of the No. 3 cylinder head, which resulted in a forced landing and collision with ground equipment.
- [NTSB WPR15LA194](https://openairdocs.org/ntsb/WPR15LA194.md): Grumman Acft ENG Cor-Schweizer G 164A · Five Points, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 21, 2015 · N8598H · Substantial damage
  > Maintenance personnel’s improper reassembly of the engine during overhaul, which led to the failure of the supercharger-blower due to a lack of lubrication and the subsequent total loss of engine power during takeoff.
- [NTSB CEN15LA175](https://openairdocs.org/ntsb/CEN15LA175.md): Grumman Acft ENG Cor-Schweizer G 164A · New Roads, LA · Accident · Minor injuries · Limited investigation · Final report · Mar 17, 2015 · N9755 · Substantial damage
  > The loss of engine power due to three stuck exhaust valves.
- [NTSB CEN11LA563](https://openairdocs.org/ntsb/CEN11LA563.md): Grumman Acft ENG Cor-Schweizer G-164A · Mansfield, SD · Accident · No injuries · Limited investigation · Final report · Aug 10, 2011 · N127FC · Substantial damage
  > The loss of engine power due to debris in the engine air intake system.
- [NTSB CEN09LA574](https://openairdocs.org/ntsb/CEN09LA574.md): Grumman Acft ENG Cor-Schweizer G-164A · Kimball, NE · Accident · No injuries · Limited investigation · Final report · Sep 8, 2009 · N6761Q · Substantial damage
  > A loss of engine power due to improper installation of an oil line fitting resulting in oil depletion.
- [NTSB DEN08CA135](https://openairdocs.org/ntsb/DEN08CA135.md): Grumman G-164A · Walsh, CO · Accident · No injuries · Data collection · Final report · Aug 6, 2008 · N7487 · Substantial damage
  > The total failure of a cylinder head assembly. Contributing to the accident was the lack of suitable terrain for a forced landing.

## 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_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '340' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/340/sequence?model=3952801

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