# NTSB investigations: Empennage structure, general

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 ERA23FA045](https://openairdocs.org/ntsb/ERA23FA045.md): Bearhawk Patrol · Hanover Township, PA · Accident · 2 fatal · Class 3 · Field · Final report · Oct 29, 2022 · N964RS · Substantial damage
  > The pilot’s decision to unlatch his seatbelt during flight, which allowed him to exit the airplane and impact the tail, resulting in a loss of control and impact with terrain.
- [NTSB DCA20LA107](https://openairdocs.org/ntsb/DCA20LA107.md): Boeing 737 · Victorville, CA · Accident · No injuries · Class 3 · Limited · Final report · May 19, 2020 · N820TJ · Substantial damage
  > Improper installation of dorsal fin attach bolts which caused the dorsal fin to separate during flight, substantially damaging the left horizontal stabilizer.
- [NTSB GAA16CA308](https://openairdocs.org/ntsb/GAA16CA308.md): Cessna 208 · Fort Dodge, IA · Accident · No injuries · Data collection · Final report · Jun 5, 2016 · N750Z · Substantial damage
  > The flight crew's failure to install the tail stand prior to passenger boarding, which resulted in a tail strike.
- [NTSB CEN15FA268](https://openairdocs.org/ntsb/CEN15FA268.md): Piper PA 32 · Cuba, MO · Accident · 1 fatal · Field investigation · Final report · Jun 14, 2015 · N2966X · Destroyed
  > The pilot's continued flight into thunderstorm activity, which resulted in his loss of airplane control, the exceedance of the airplane's design limits, and its subsequent in-flight breakup. Contributing to the accident was the pilot's reliance on onboard…
- [NTSB ERA13CA195](https://openairdocs.org/ntsb/ERA13CA195.md): Phoenix Air U15 · Foscoe, NC · Accident · No injuries · Data collection · Final report · Apr 6, 2013 · N94DK · Substantial damage
  > The motorized glider’s encounter with clear air turbulence, which resulted in substantial damage to the empennage.
- [NTSB WPR13FA086](https://openairdocs.org/ntsb/WPR13FA086.md): Beech V35A · Woody, CA · Accident · 2 fatal · Field investigation · Final report · Jan 7, 2013 · N35SD · Destroyed
  > An in-flight encounter with icing conditions during descent, which resulted in the airplane exceeding its critical angle-of-attack and experiencing an aerodynamic stall followed by an in-flight breakup.
- [NTSB CEN13FA073](https://openairdocs.org/ntsb/CEN13FA073.md): Cessna 421C · Wells, TX · Accident · 1 fatal · Field investigation · Final report · Nov 27, 2012 · N67SR · Substantial damage
  > The pilot’s decision to continue the flight into an area of extreme weather, which led to the in-flight encounter with a thunderstorm and structural failure of the wings and tail.
- [NTSB CEN12LA531](https://openairdocs.org/ntsb/CEN12LA531.md): Ristine Avid Mark IV · Poplar Grove, IL · Accident · No injuries · Limited investigation · Final report · Aug 9, 2012 · N1328L · Substantial damage
  > The failure of the lower right side longeron tail-spring support area during landing due to excessive corrosion.
- [NTSB WPR12MA034](https://openairdocs.org/ntsb/WPR12MA034.md): Eurocopter EC 130 B4 · Pukoo, HI · Accident · 5 fatal · Major investigation · Final report · Nov 10, 2011 · N11QV · Substantial damage
  > The pilot's failure to maintain clearance from mountainous terrain while operating in marginal weather conditions, which resulted in the impact of the horizontal stabilizer and lower forward portion of the fenestron with ground and/or vegetation and led to…
- [NTSB ERA12FA018](https://openairdocs.org/ntsb/ERA12FA018.md): Berger Michael A Waiex · Washington, GA · Accident · 1 fatal · Field investigation · Final report · Oct 22, 2011 · N75654 · Substantial damage
  > The in-flight failure of the aircraft’s Y-tail attachment structure during maneuvering flight due to overload. Contributing to the accident was, the kit manufacturer’s use of 14 CFR Part 23, Appendix A design guidelines intended for a conventional tail…
- [NTSB CEN11CA679](https://openairdocs.org/ntsb/CEN11CA679.md): Waltman Theodore J Moose · Hays, KS · Accident · No injuries · Data collection · Final report · Sep 30, 2011 · N384JP · Substantial damage
  > Rudder flutter due to the design changes to the airplane's horizontal stabilizer.
- [NTSB ERA10CA477](https://openairdocs.org/ntsb/ERA10CA477.md): Beam-Walter RS-15 · Windsor, VA · Accident · Minor injuries · Data collection · Final report · Aug 27, 2010 · N29WB · Substantial damage
  > The pilot's inadequate installation and preflight inspection of the right rudervator assembly, which resulted in a loss control during takeoff.
- [NTSB ERA09LA502](https://openairdocs.org/ntsb/ERA09LA502.md): M-Squared Sprint 1000 · Madeira Beach, FL · Accident · 2 fatal · Limited investigation · Final report · Sep 5, 2009 · N185SQ · Substantial damage
  > A loss of torque to the gearbox engine-side coupling flange bolts, which resulted in separation of the gearbox and propeller from the engine and the subsequent severing of the airplane's tail structure.
- [NTSB CHI08FA172](https://openairdocs.org/ntsb/CHI08FA172.md): Enstrom Helicopter 480B · Marinette, WI · Accident · No injuries · Field investigation · Final report · Jun 24, 2008 · N480PD · Substantial damage
  > The pilot inadvertently operating the helicopter at a gross weight greater than its maximum allowable operating weight, and flying the helicopter at an airspeed greater than the never-to-exceed speed for the helicopter’s gross weight condition, resulting in…

## 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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '01035500'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/01035500/cases

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.
