# NTSB investigations, UT: 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 WPR26LA249](https://openairdocs.org/ntsb/WPR26LA249.md): Air Tractor AT-502B · Ogden, UT · Accident · No injuries · Class 3 · Limited · Preliminary report · Jul 7, 2026 · N647LA · Substantial damage
  > On July 7, 2026, about 1259 mountain daylight time, an Air Tractor, Inc. AT-502B airplane, N647LA, was substantially damaged when it was involved in an accident near Ogden, Utah. The commercial pilot was not injured. The flight was conducted as a Title 14…
- [NTSB WPR25LA096](https://openairdocs.org/ntsb/WPR25LA096.md): Cessna 150J · Minersville, UT · Accident · No injuries · Class 3 · Limited · Final report · Feb 16, 2025 · N151GW · Substantial damage
  > The failure of the propeller blade due to fatigue that originated from an impact pit sustained at an unknown time. Contributing to the accident was the failure of unknown maintenance personnel to detect and repair the impact pit before painting the propeller,…
- [NTSB WPR24LA211](https://openairdocs.org/ntsb/WPR24LA211.md): Beech 58P · Escalante, UT · Accident · No injuries · Class 3 · Limited · Final report · Jun 19, 2024 · N9NS · Substantial damage
  > The failure of the windshield for undetermined reasons.
- [NTSB WPR23LA149](https://openairdocs.org/ntsb/WPR23LA149.md): Stevens Kelly C RV-7 · Morgan, UT · Accident · No injuries · Class 3 · Limited · Final report · Apr 9, 2023 · N17NK · Substantial damage
  > The pilot/builder improperly torqued the propeller attachment bolts while reinstalling the propeller, which resulted in the fatigue failure of the bolts and the separation of the propeller assembly.
- [NTSB GAA18CA358](https://openairdocs.org/ntsb/GAA18CA358.md): Diamond Aircraft Ind DA 20 · Spanish Fork, UT · Accident · No injuries · Data collection · Final report · Jun 16, 2018 · N992CT · Substantial damage
  > The pilot receiving instruction’s failure to maintain adequate airspeed and his exceedance of the airplane’s critical angle of attack during takeoff, which resulted in an aerodynamic stall.
- [NTSB WPR16FA054](https://openairdocs.org/ntsb/WPR16FA054.md): Cessna 525 · Cedar Fort, UT · Accident · 2 fatal · Field investigation · Final report · Jan 18, 2016 · N711BX · Destroyed
  > The pilot's loss of control due to spatial disorientation while operating in instrument meteorological conditions, which resulted in an exceedance of the airplane's design stress limitations, and a subsequent in-flight breakup. Contributing to the accident…
- [NTSB WPR16FA036](https://openairdocs.org/ntsb/WPR16FA036.md): Barnett Allen S RV7 · Hurricane, UT · Accident · 2 fatal · Class 3 · Field · Final report · Dec 10, 2015 · N307AB · Substantial damage
  > The pilot’s aerobatic maneuver leading to airspeeds above the airplane’s never exceed speed, which resulted in rudder flutter and an in-flight breakup.
- [NTSB GAA15CA100](https://openairdocs.org/ntsb/GAA15CA100.md): Cessna 305 · Richfield, UT · Accident · No injuries · Data collection · Final report · May 27, 2015 · N16708 · Substantial damage
  > The pilot's loss of directional control during landing, which resulted in a ground loop.

## 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" = 'UT' 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=UT

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