# NTSB investigations: Pratt & Whitney R1340 series: 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 WPR19LA137](https://openairdocs.org/ntsb/WPR19LA137.md): Grumman G164 · Sutter, CA · Accident · No injuries · Class 3 · Limited · Final report · May 5, 2019 · N3630D · Substantial damage
  > A 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.
- [NTSB WPR17LA174](https://openairdocs.org/ntsb/WPR17LA174.md): Rockwell International S 2R · Brawley, CA · Accident · No injuries · Limited investigation · Final report · Aug 1, 2017 · N4913X · Substantial damage
  > The partial loss of engine power due to the overstress separation of three supercharger drive gear teeth.
- [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 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 CEN12LA589](https://openairdocs.org/ntsb/CEN12LA589.md): Air Tractor AT-301 · Ralls, TX · Accident · Minor injuries · Limited investigation · Final report · Aug 29, 2012 · N23960 · Substantial damage
  > The total loss of engine power due to a fatigue failure of the rocker arm journal casting of the rocker arm cap.
- [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 CEN09LA602](https://openairdocs.org/ntsb/CEN09LA602.md): Air Tractor AT-301A · New Miner, WI · Accident · Minor injuries · Limited investigation · Final report · Aug 22, 2009 · N3651R · Substantial damage
  > A total loss of engine power due to the fatigue failure of the engine torsion shaft. Contributing to the accident was the chrome plating of the shaft by an undetermined maintenance/overhaul facility.
- [NTSB ANC09LA065](https://openairdocs.org/ntsb/ANC09LA065.md): Noorduyn UC-64A · Akiachak, AK · Accident · No injuries · Limited investigation · Final report · Jul 11, 2009 · N225BL · Substantial damage
  > The loss of engine power due to the failure of a crankshaft component, resulting in an off-airport landing.
- [NTSB CEN09CA283](https://openairdocs.org/ntsb/CEN09CA283.md): Gulfstream-Schweizer A/C Gulfstream · Iowa, LA · Accident · No injuries · Data collection · Final report · May 7, 2009 · N8080K · Destroyed
  > A partial loss of engine power due to the Number 8 cylinder head cracking and separating from the barrel.
- [NTSB WPR09LA085](https://openairdocs.org/ntsb/WPR09LA085.md): Air Tractor AT-301 · Beaver, UT · Accident · Minor injuries · Limited investigation · Final report · Jan 15, 2009 · N3170C · Substantial damage
  > A loss of engine power while maneuvering due to a sheared propeller blade's pitch change link. Contributing to the accident was lack of suitable terrain for the forced landing.
- [NTSB ERA09CA054](https://openairdocs.org/ntsb/ERA09CA054.md): Snow 600 · Nashville, TN · Accident · No injuries · Data collection · Final report · Nov 14, 2008 · N1691S · Substantial damage
  > The failure of the propeller shaft seal in flight. Contributing to the accident was the lack of suitable terrain for a forced landing.
- [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.engine_model_code IN ('52016')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '340'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/340/cases?engine=52016

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