# NTSB investigations: Stabilizer control system 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 ERA23FA346](https://openairdocs.org/ntsb/ERA23FA346.md): Beech C-99 · Litchfield, ME · Accident · 2 fatal · Class 3 · Field · Final report · Aug 22, 2023 · N55RP · Destroyed > A horizontal stabilizer pitch trim anomaly that was not identified in the available evidence. - [NTSB DCA22LA212](https://openairdocs.org/ntsb/DCA22LA212.md): Airbus A330-243 · Los Angeles, CA · Incident · No injuries · Class 3 · Limited · Final report · Sep 22, 2022 · N393HA · No damage > Uncommanded movement of the trimmable horizontal stabilizer control wheel for reasons that could not be determined based on the available evidence. - [NTSB DCA22MA193](https://openairdocs.org/ntsb/DCA22MA193.md): Dehavilland DHC-3 · Freeland, WA · Accident · 10 fatal · Class 1 · Major · Final report · Sep 4, 2022 · N725TH · Destroyed > The in-flight unthreading of the clamp nut from the horizontal stabilizer trim actuator barrel due to a missing lock ring, which resulted in the horizontal stabilizer moving to an extreme trailing-edge-down position rendering the airplane’s pitch… - [NTSB CEN21LA363](https://openairdocs.org/ntsb/CEN21LA363.md): Rotary RAF2000 · Anahuac, TX · Accident · No injuries · Class 3 · Limited · Final report · Aug 7, 2021 · UNREG · Substantial damage > The pilot’s incorrect trim system installation, which resulted in a loss of gyroplane control and impact with terrain. - [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 ERA15LA360](https://openairdocs.org/ntsb/ERA15LA360.md): J. Schilling S-19 · East Falmouth, MA · Accident · No injuries · Limited investigation · Final report · Sep 15, 2015 · N8DV · Substantial damage > The experimental airplane builder's failure to properly secure the stabilator trim tab push-pull tube’s connection, which resulted in the tube’s separation and a subsequent hard landing. Contributing to the accident was the pilot/owner's failure to detect the… - [NTSB ERA13IA396](https://openairdocs.org/ntsb/ERA13IA396.md): Piper PA-28RT-201 · Chesapeake, VA · Incident · No injuries · Incident investigation · Final report · Aug 31, 2013 · N2091W · No damage > Maintenance personnel’s inadequate inspection and compliance with a Federal Aviation Administration airworthiness directive, which resulted in an undetected corroded and cracked stabilator turnbuckle and the subsequent failure of the turnbuckle and loss of… - [NTSB DCA13MA081](https://openairdocs.org/ntsb/DCA13MA081.md): Boeing 747-400 BCF · Bagram, Afghanistan · Accident · 7 fatal · Class 1 · Major · Final report · Apr 29, 2013 · N949CA · Destroyed > National Airlines' inadequate procedures for restraining special cargo loads, which resulted in the loadmaster's improper restraint of the cargo, which moved aft and damaged hydraulic systems Nos. 1 and 2 and horizontal stabilizer drive mechanism components,… - [NTSB ERA12IA237](https://openairdocs.org/ntsb/ERA12IA237.md): Piper PA-32R-300 · Warrenton, VA · Incident · No injuries · Incident investigation · Final report · Mar 14, 2012 · N1358H · No damage > Maintenance personnel's failure to identify stress corrosion cracking in the stabilator control cable during the most recent inspection, and the subsequent failure of the cable on the flight after the inspection. - [NTSB CEN10LA312](https://openairdocs.org/ntsb/CEN10LA312.md): Piper PA-34-220T · Ankeny, IA · Accident · No injuries · Limited investigation · Final report · Jun 9, 2010 · N104NW · Substantial damage > The failure of the stabilator control cable due to wear. Contributing to the accident was the inadequate maintenance inspection of the stabilator control cable. - [NTSB CEN09IA032](https://openairdocs.org/ntsb/CEN09IA032.md): MD Helicopter MD 900 · Amherst, TX · Incident · No injuries · Incident investigation · Final report · Oct 19, 2008 · N902NM · Minor damage > The failure of the vertical stabilizer control adapter due to reverse bending fatigue. - [NTSB CEN09IA003](https://openairdocs.org/ntsb/CEN09IA003.md): MD Helicopter MD 900 · Weatherford, TX · Incident · No injuries · Incident investigation · Final report · Oct 8, 2008 · N902RN · Minor damage > The failure of the vertical stabilizer control adapter due to reverse bending fatigue. - [NTSB DEN08FA058](https://openairdocs.org/ntsb/DEN08FA058.md): Piper PA-23-250 · Sterling, KS · Accident · 1 fatal · Field investigation · Final report · Feb 13, 2008 · N62793 · Destroyed > The loss of pitch control during cruise flight resulting from the separation of the stabilator trim actuator due to inadequate maintenenace. ## 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", '01022740')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-findings/01022740/cases --- 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.