# NTSB investigations, 2019: Flight control sys 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 ERA20LA080](https://openairdocs.org/ntsb/ERA20LA080.md): Team Rocket F-1 F-1 · Suffolk, VA · Accident · No injuries · Class 3 · Limited · Final report · Dec 24, 2019 · N230BW · Substantial damage
  > A structural failure of the horizontal stabilizer during aerobatic maneuvers near the airplane’s never-exceed speed. Contributing to the failure was the construction of the horizontal stabilizer that did not meet the kit manufacturer’s specifications.
- [NTSB CEN20WA056](https://openairdocs.org/ntsb/CEN20WA056.md): Learjet 45 · Geneva, Switzerland · Incident · No injuries · Foreign investigation · Dec 18, 2019 · D-CNMB · No damage
  > The government of Switzerland has notified the NTSB of an incident involving a LEARJET 45 airplane that occurred on December 18, 2019. The NTSB has appointed a U.S. Accredited Representative to assist the government of Switzerland's investigation under the…
- [NTSB WPR20TA039](https://openairdocs.org/ntsb/WPR20TA039.md): Enstrom F28 · Riverton, UT · Accident · Minor injuries · Class 3 · Final report · Dec 11, 2019 · N65RS · Substantial damage
  > The noncertificated pilot’s decision to operate a deregistered helicopter, which resulted in a component failure and subsequent loss of control and hard landing. Contributing to the accident was the lack of recent maintenance on the helicopter.
- [NTSB ERA20LA051](https://openairdocs.org/ntsb/ERA20LA051.md): Parsons Two Place #1 · Naguabo, PR · Accident · Serious injuries · Class 3 · Limited · Final report · Dec 8, 2019 · N446PS · Substantial damage
  > A failure of the rudder attachment bolt, which resulted in the rudder’s subsequent inflight separation from the fuselage.
- [NTSB DCA20IA014](https://openairdocs.org/ntsb/DCA20IA014.md): Embraer ERJ170 · Atlanta, GA · Incident · No injuries · Class 3 · Incident · Final report · Nov 7, 2019 · N117HQ · No damage
  > The captain’s use of his pitch trim switch, which had been placarded inoperative but not deactivated, resulting in the airplane pitching up when the captain was trying to trim down. The trim commands were reversed due to maintenance personnel’s incorrect…
- [NTSB WPR20LA004](https://openairdocs.org/ntsb/WPR20LA004.md): Glaser Dirks DG500 · Marana, AZ · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 6, 2019 · N600TT · Substantial damage
  > The pilots’ exceedance of the glider’s never-exceed speed (VNE) during recovery from an intentional aerobatic maneuver, which resulted in a failure of the right-wing air brake control drive, asymmetrical air brake deployment, and a subsequent hard landing.
- [NTSB WPR20LA001](https://openairdocs.org/ntsb/WPR20LA001.md): Buckeye Breeze · Moore, UT · Accident · 1 fatal · Class 3 · Limited · Final report · Oct 5, 2019 · N582UT · Substantial damage
  > The pilot’s improper preflight inspection and detection of a pinch point in the steering line, which resulted in a loss of control in flight and impact with terrain.
- [NTSB DCA19WA212](https://openairdocs.org/ntsb/DCA19WA212.md): Boeing 737 · South Africa · Incident · No injuries · Foreign investigation · Sep 2, 2019 · ZS-SJD · No damage
  > The government of South Africa has notified the NTSB of an incident involving a BOEING 737 airplane that occurred on September 02, 2019. The NTSB has appointed a U.S. Accredited Representative to assist the government of South Africa's investigation under the…
- [NTSB CEN19LA224](https://openairdocs.org/ntsb/CEN19LA224.md): Piper PA18 · Osceola, WI · Accident · No injuries · Class 3 · Limited · Final report · Jul 14, 2019 · N6983B · Substantial damage
  > The failure of the right horizontal stabilizer during takeoff, resulting in a loss of control and forced landing. Contributing to the accident was the installation of an unapproved stabilizer frame and failure of maintenance personnel to identify…
- [NTSB ERA19FA225](https://openairdocs.org/ntsb/ERA19FA225.md): Quicksilver Mxii · Oliver Springs, TN · Accident · 1 fatal · Class 3 · Field · Final report · Jul 13, 2019 · N3889Z · Substantial damage
  > The noncertificated pilot’s decision to continue to takeoff and climb after encountering an undetermined airplane control issue that he was unable to counteract, which resulted in collision with trees and subsequent impact with terrain.
- [NTSB CEN19LA219](https://openairdocs.org/ntsb/CEN19LA219.md): Fisher Flying Products Super Koala · Hazen, ND · Accident · No injuries · Class 3 · Limited · Final report · Jul 6, 2019 · N220FF · Substantial damage
  > The airplane owner's and mechanic's improper rigging and cable tension of the aileron control system, which resulted in a loss of control during takeoff.
- [NTSB CEN19LA174](https://openairdocs.org/ntsb/CEN19LA174.md): Robinson R44 · Key West, FL · Accident · No injuries · Class 3 · Limited · Final report · Jun 17, 2019 · N1241W · Substantial damage
  > The failure of maintenance personnel to properly secure the right-side tail boom mounting bolts which resulted in the failure of the bolts and an inflight separation of the tail rotor.
- [NTSB DCA19LA154](https://openairdocs.org/ntsb/DCA19LA154.md): Aurora PAV · Manassas, VA · Accident · No injuries · Limited investigation · Final report · Jun 4, 2019 · N83AU · Substantial damage
  > a loss of hover lift thrust provided by the eight lift motors due to a false on-ground rotor speed reduction command, resulting from excessive vibration.
- [NTSB WPR19LA112](https://openairdocs.org/ntsb/WPR19LA112.md): Air Tractor AT502 · Morganza, LA · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 16, 2019 · N599LA · Substantial damage
  > A loss of aircraft control due to the separation of the elevator pushrod attachment bolt.
- [NTSB WPR19LA114](https://openairdocs.org/ntsb/WPR19LA114.md): Great Lakes 2T-1A-2 · San Diego, CA · Accident · No injuries · Class 3 · Limited · Final report · Mar 15, 2019 · N101GL · Substantial damage
  > The fracture of the aileron hinge strap due to fatigue crack propagation, which resulted in substantial damage to a wing rib aft of the spar at the outboard aileron cutout. Contributing to the accident was inadequate maintenance inspection.
- [NTSB CEN19LA065](https://openairdocs.org/ntsb/CEN19LA065.md): Robinson R44 · Uvalde, TX · Accident · Minor injuries · Limited investigation · Final report · Jan 8, 2019 · N484AB · Substantial damage
  > The slipping of the sprag clutch due to galling of the sprags and corresponding sprag contact surfaces within the clutch assembly, which rendered the helicopter uncontrollable.

## 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") = 2019
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '333' 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/333/sequence?year=2019

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