# Major NTSB investigations, 2011

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 ERA12MA122](https://openairdocs.org/ntsb/ERA12MA122.md): Bell 206B · Green Cove Springs, FL · Accident · 3 fatal · Major investigation · Final report · Dec 26, 2011 · N5016M · Destroyed
  > The pilot’s improper decision to continue visual flight into night instrument meteorological conditions, which resulted in controlled flight into terrain. Contributing to the pilot’s improper decision was his self-induced pressure to complete the trip.
- [NTSB DCA12MA020](https://openairdocs.org/ntsb/DCA12MA020.md): Eurocopter France AS350B2 · Las Vegas, NV · Accident · 5 fatal · Class 1 · Major · Final report · Dec 8, 2011 · N37SH · Destroyed
  > Sundance Helicopters’ inadequate maintenance of the helicopter, including (1) the improper reuse of a degraded self-locking nut, (2) the improper or lack of installation of a split pin, and (3) inadequate postmaintenance inspections, which resulted in the…
- [NTSB WPR12MA046](https://openairdocs.org/ntsb/WPR12MA046.md): Rockwell 690 · Apache Junction, AZ · Accident · 6 fatal · Major investigation · Final report · Nov 24, 2011 · N690SM · Destroyed
  > The pilot's failure to maintain a safe ground track and altitude combination for the moonless night visual flight rules flight, which resulted in controlled flight into terrain. Contributing to the accident were the pilot's complacency and lack of situational…
- [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 ERA12MA005](https://openairdocs.org/ntsb/ERA12MA005.md): Bell 206B · New York, NY · Accident · 2 fatal · Major investigation · Final report · Oct 4, 2011 · N63Q · Substantial damage
  > The pilot's failure to anticipate and correct for conditions (high gross weight, low indicated airspeed, and a right downwind turn) conducive to loss of tail rotor effectiveness (LTE), which resulted in LTE and an uncontrolled spin. Contributing to the…
- [NTSB WPR11MA454](https://openairdocs.org/ntsb/WPR11MA454.md): North American/Aero Classics P-51D · Reno, NV · Accident · 11 fatal · Class 1 · Major · Final report · Sep 16, 2011 · N79111 · Substantial damage
  > The reduced stiffness of the elevator trim tab system that allowed aerodynamic flutter to occur at racing speeds. The reduced stiffness was a result of deteriorated locknut inserts that allowed the trim tab attachment screws to become loose and to initiate…
- [NTSB CEN11FA599](https://openairdocs.org/ntsb/CEN11FA599.md): Eurocopter AS-350-B2 · Mosby, MO · Accident · 4 fatal · Class 1 · Field · Final report · Aug 26, 2011 · N352LN · Substantial damage
  > The pilot's failure to confirm that the helicopter had adequate fuel on board to complete the mission before making the first departure, his improper decision to continue the mission and make a second departure after he became aware of a critically low fuel…
- [NTSB DCA11MA076](https://openairdocs.org/ntsb/DCA11MA076.md): Gulfstream GVI · Roswell, NM · Accident · 4 fatal · Class 1 · Major · Final report · Apr 2, 2011 · N652GD · Substantial damage
  > The National Transportation Safety Board determines the probable cause(s) of this accident as follows: an aerodynamic stall and subsequent uncommanded roll during a one engine-inoperative takeoff flight test, which were the result of (1) Gulfstream’s failure…
- [NTSB DCA11MA039](https://openairdocs.org/ntsb/DCA11MA039.md): Boeing 737 · Yuma, AZ · Accident · Minor injuries · Major investigation · Final report · Apr 1, 2011 · N632SW · Substantial damage
  > the improper installation of the fuselage crown skin panel at the S-4L lap joint during the manufacturing process, which resulted in multiple site damage fatigue cracking and eventual failure of the lower skin panel. Contributing to the injuries was flight…

## 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 year(c."eventDate") = 2011
  AND (c.board_report_url IS NOT NULL OR c."investigationClass" = 'Class 1' OR c."caseType" = 'Major - Launch')
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?major=1&year=2011

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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.