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Below approach minima

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NTSB finding · Environmental issues › Conditions/weather/phenomena › Ceiling/visibility/precip

All 11 cases8 in the probable cause
Cases
11
In the probable cause
8 (73%)
Fatal cases
7
NTSB code
03035070

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\", '03035070') 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\", '03035070'))
  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\", '03035070') 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 · 11

NTSB CEN22FA069Accident · 1 fatalClass 3 · FieldFinal reportPiper PA46-500TP · Steamboat Springs, COThe pilot’s failure to adhere to the published instrument approach procedure, which resulted in controlled flight into terrain.Dec 11, 2021 · N744Z · Substantial damageNTSB ERA21LA101Accident · 1 fatalClass 3 · LimitedFinal reportBeech F33 · Columbia, SCThe pilot's in-flight loss of airplane control due to spatial disorientation during a missed approach in instrument meteorological conditions.Jan 13, 2021 · N266DC · DestroyedNTSB CEN16FA372Accident · Serious injuriesField investigationFinal reportAgusta A109 · Alexandria, MNThe pilot's excessive cyclic input during a missed approach maneuver in night instrument meteorological conditions, which resulted in a loss of control and spiraling descent into terrain.Sep 17, 2016 · N91NM · DestroyedNTSB CEN15FA087Accident · 1 fatalField investigationFinal reportPiper PA-34-200T · Port Huron, MIThe pilot’s decision to continue flight below the minimum descent altitude without visually acquiring the runway and his delayed and improperly executed missed approach procedure in instrument meteorological conditions.Dec 24, 2014 · N38884 · DestroyedNTSB CEN13LA088Accident · Minor injuriesLimited investigationFinal reportCessna 172M · Rochester, MNThe pilot’s spatial disorientation during the instrument approach in night, instrument meteorological conditions, which resulted in the airplane descending below decision height and impacting terrain outside the lateral limits of the localizer. Contributing…Dec 3, 2012 · N9853Q · Substantial damageNTSB CEN11FA417Accident · 2 fatalField investigationFinal reportBeech A36 · Charlevoix, MIThe pilot's inadequate airspeed while maneuvering at low altitude, which resulted in an aerodynamic stall. Contributing to the accident was the pilot's decision to not execute a missed approach in weather conditions below minimums.Jun 24, 2011 · N88MN · Substantial damageNTSB WPR11FA170Accident · 1 fatalField investigationFinal reportCessna T310R · Butte, MTThe pilot's loss of airplane control during the missed approach for undetermined reasons. Contributing to the accident was the rapid and unforecast deterioration of the weather conditions to below the landing minimum and the pilot's decision to attempt the…Mar 19, 2011 · N4914A · Substantial damageNTSB CEN11FA124Accident · 2 fatalField investigationFinal reportMooney M20E · Colorado Springs, COThe pilot’s decision to initiate an approach into weather conditions where the ceiling and visibility were below the minimums for the approach and where reported icing existed, in an airplane not certified for flight in icing conditions, and his failure to…Dec 22, 2010 · N79869 · Substantial damageNTSB CEN10LA105Accident · No injuriesLimited investigationFinal reportBeech B200 · Sioux City, IAThe flight crew's decision to attempt a flight that was below takeoff, landing, and alternate airport weather minimums, which led to a touchdown off the runway surface by the pilot-in-command.Jan 19, 2010 · N586BC · Substantial damageNTSB CEN10FA069Accident · 1 fatalField investigationFinal reportBeech A36 · Eagle Pass, TXThe pilot's decision to continue the approach below minimums without visual references, and subsequent collision with the perimeter fence/terrain.Dec 9, 2009 · N1105N · Destroyed
See all 11 cases
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\", '03035070'))
  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.