OpenAirDocs.org

Rudder tab control system

Open the Markdown

NTSB finding · Aircraft › Aircraft systems › Flight control system

All 6 cases5 in the probable cause
Cases
6
In the probable cause
5 (83%)
Fatal cases
0
NTSB code
01022721

NTSB has coded findings and defining events since 2008. Earlier cases used its older occurrence and cause codes, so they aren’t counted here.

When and where

In green, cases where NTSB made it part of the probable cause; in gray, a factor or other finding. Findings are coded with the final report, often a year or more after the event, so the latest years are incomplete.

Cases per year

2008In the probable causeFactor only2026

Where

Open the map
Query with SQL
duckdb -csv -c "SELECT year(c.\"eventDate\") AS year, count(DISTINCT f.case_mkey) AS cases,
    count(DISTINCT f.case_mkey) FILTER (WHERE f.\"inProbableCause\") AS in_probable_cause
  FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = f.case_mkey
  WHERE starts_with(f.\"findingCode\", '01022721') AND c.\"eventDate\" >= DATE '2000-01-01'
  GROUP BY 1
  ORDER BY 1"

Prints the counts as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

In the same cases

Defining events
Aircraft models

Aircraft matched to the registry by N-number and date.

Other findings
Query with SQL
duckdb -csv -c "WITH matched AS (SELECT DISTINCT case_mkey, aircrafts_position FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' WHERE starts_with(\"findingCode\", '01022721'))
  SELECT * FROM (
  SELECT 'Defining event' AS kind, e.\"tier2Number\" AS code, max(e.\"eventTier2Name\") AS name, count(DISTINCT f.case_mkey) AS cases
  FROM matched f JOIN 'https://openairdocs.org/data/latest/ntsb_events.parquet' e ON e.case_mkey = f.case_mkey AND e.aircrafts_position = f.aircrafts_position AND e.\"isDefiningEvent\"
  WHERE e.\"tier2Number\" <> ''
  GROUP BY ALL
  UNION ALL
  SELECT 'Aircraft model', a.aircraft_model_code, any_value(concat_ws(' ', m.manufacturer, m.model)), count(DISTINCT f.case_mkey)
  FROM matched f JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = f.case_mkey AND a.position = f.aircrafts_position
  LEFT JOIN 'https://openairdocs.org/data/latest/faa_aircraft_model.parquet' m ON m.code = a.aircraft_model_code
  WHERE a.aircraft_model_code IS NOT NULL
  GROUP BY ALL
  UNION ALL
  SELECT 'Other finding', left(g.\"findingCode\", 8), max(g.\"tier4Name\"), count(DISTINCT g.case_mkey)
  FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' g
  WHERE g.case_mkey IN (SELECT case_mkey FROM matched) AND NOT starts_with(g.\"findingCode\", '01022721') AND g.\"findingCode\" GLOB '[0-9][0-9]*'
  GROUP BY ALL
  )
  QUALIFY row_number() OVER (PARTITION BY kind ORDER BY cases DESC) <= 10
  ORDER BY kind, cases DESC"

Prints the counts as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

Newest cases · 6

NTSB CEN23LA363Accident · Minor injuriesClass 4 · LimitedFinal reportBeech C-99 · Lansing, MIThe pilot’s failure to properly set the rudder trim position which resulted in a loss of directional control during takeoff. Contributing was the pilot’s inadequate checklist procedures prior to takeoff.Aug 15, 2023 · N261SW · Substantial damageNTSB GAA17CA536Accident · Minor injuriesData collectionFinal reportMenzimer Gary Ray Firestar · Westfield, PAThe pilot's improper decision to operate an airplane without recent flight training and his inadvertent application of left electric rudder trim before flight and a subsequent loss of airplane control.Jul 30, 2017 · UNREG · DestroyedNTSB CEN14LA456Accident · Minor injuriesLimited investigationFinal reportMaule MT 7-235 · Edon, OHThe pilot’s inability to maintain airplane control while attempting a precautionary landing after takeoff due to his incorrect setting of the rudder trim tab, which resulted in a significant turning tendency during flight.Aug 26, 2014 · N627RK · Substantial damageNTSB CEN11CA679Accident · No injuriesData collectionFinal reportWaltman Theodore J Moose · Hays, KSRudder flutter due to the design changes to the airplane's horizontal stabilizer.Sep 30, 2011 · N384JP · Substantial damageNTSB CEN11LA558Accident · No injuriesLimited investigationFinal reportPiper Aerostar 601P · Alpine, TXThe pilot’s improper flare which resulted in a hard landing. Contributing to the accident was the pilot’s improper decision to fly the airplane with a known mechanical deficiency.Aug 22, 2011 · N8076J · Substantial damageNTSB WPR09LA108Accident · No injuriesLimited investigationFinal reportDouglas DC-3/65AR · Mojave, CAThe student pilot failed to follow the checklist and set the takeoff trim properly prior to takeoff resulting in a loss of directional control. Contributing to the accident were the certified flight instructor's inadequate supervision and delayed remedial…Feb 4, 2009 · N834TP · Substantial damage
Query with SQL
duckdb -csv -c "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\", '01022721'))
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.