# NTSB investigations, TN: Part(s) separation from AC

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 ERA26FA241](https://openairdocs.org/ntsb/ERA26FA241.md): Cessna 177RG · Morrison, TN · Accident · 2 fatal · Class 3 · Field · Preliminary report · Jun 17, 2026 · N7637V · Substantial damage
  > On June 17, 2026, about 1215 central daylight time, a Cessna 177RG, N7637V, was substantially damaged when it was involved in an accident near Morrison, Tennessee. The pilot and pilot-rated passenger were fatally injured. The airplane was operated as a Title…
- [NTSB ERA25LA114](https://openairdocs.org/ntsb/ERA25LA114.md): Cessna 172P · Clarksville, TN · Accident · No injuries · Class 3 · Limited · Final report · Feb 3, 2025 · N62112 · Substantial damage
  > The flight instructor’s inadequate preflight inspection of the airplane, which allowed the partially secured engine cowl to separate in flight.
- [NTSB ERA24FA274](https://openairdocs.org/ntsb/ERA24FA274.md): Air Tractor AT502 · Martin, TN · Accident · 1 fatal · Class 3 · Field · Preliminary report · Jun 25, 2024 · N325RA · Substantial damage
  > On June 25, 2024, about 0820 central daylight time, an Air Tractor, Inc. AT-502A, N325RA, was substantially damaged when it was involved in an accident near Martin, Tennessee. The commercial pilot was fatally injured. The airplane was operated as a Title…
- [NTSB ERA23FA219](https://openairdocs.org/ntsb/ERA23FA219.md): Cessna 182 · Reliance, TN · Accident · 1 fatal · Class 3 · Field · Final report · May 7, 2023 · N725AS · Substantial damage
  > The pilot’s decision to continue an instrument flight into an area of forecast weather with severe to extreme turbulence associated with a line of thunderstorms, which resulted in an in-flight breakup. Contributing was the pilot’s operation of the airplane in…
- [NTSB ERA21LA223](https://openairdocs.org/ntsb/ERA21LA223.md): Zenith Zodiac 601 XL · McKenzie, TN · Accident · No injuries · Class 3 · Limited · Final report · May 15, 2021 · N493TG · Substantial damage
  > The improper installation and inspection of the propeller, which resulted in an in-flight separation of the propeller assembly.
- [NTSB ERA21LA149](https://openairdocs.org/ntsb/ERA21LA149.md): Beech 23 · Rogersville, TN · Accident · No injuries · Class 4 · Limited · Final report · Mar 3, 2021 · N2374J · Substantial damage
  > The pilot's improper landing flare, which resulted in an initial hard landing, separation of the left main landing gear, and a runway excursion during a subsequent landing attempt.
- [NTSB GAA20CA042](https://openairdocs.org/ntsb/GAA20CA042.md): Beech 19 · Somerville, TN · Accident · No injuries · Data collection · Final report · Oct 9, 2019 · N2177W · Substantial damage
  > The pilot's failure to move the fuel selector position to the "on" position before takeoff, which resulted in a total loss of engine power and necessitated a forced landing to a field shortly after takeoff, and his subsequent improper decision to take off…
- [NTSB ERA18FA240](https://openairdocs.org/ntsb/ERA18FA240.md): Lance M Hooley Jetez · Covington, TN · Accident · 1 fatal · Field investigation · Final report · Sep 1, 2018 · N815EY · Destroyed
  > The improper manufacture of the left wing, which resulted in a left wing flutter event and failure at low altitude and high speed.
- [NTSB ERA17LA326](https://openairdocs.org/ntsb/ERA17LA326.md): Air Tractor AT 502 · Union City, TN · Accident · No injuries · Limited investigation · Final report · Sep 15, 2017 · N4531K · Substantial damage
  > The catastrophic failure of the compressor turbine blades, which resulted in a total loss of engine power. Contributing to the accident was the installation of undocumented, time-limited engine components of indeterminate age.
- [NTSB ERA15LA138](https://openairdocs.org/ntsb/ERA15LA138.md): Bell 206 · Sevierville, TN · Accident · No injuries · Limited investigation · Final report · Feb 15, 2015 · N3176L · Substantial damage
  > An uncontained engine failure, which resulted from insufficient lubrication of the No. 4 bearing due to carbon buildup on the filter screen of the bearing's oil supply nozzle.
- [NTSB ERA14FA421](https://openairdocs.org/ntsb/ERA14FA421.md): Klaas Development Lancair IV P · Ooltewah, TN · Accident · 1 fatal · Field investigation · Final report · Sep 3, 2014 · N541EM · Substantial damage
  > The inadequate torque of the propeller mounting bolts and inspection of the propeller, which resulted in the fatigue fracture of the bolts and a subsequent in-flight separation of the propeller assembly.

## 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."eventStateOrRegion" = 'TN' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '338' 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/338/sequence?state=TN

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