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Windshear or thunderstorm

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NTSB defining event · CICTT: Windshear/Thunderstorm

CICTT occurrence categories (PDF)CICTT phases of flight (PDF)

All 119 cases224 anywhere in the sequence
Defining event in
119 cases
In the sequence of
224 cases
Fatal cases
29
NTSB code
390

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 it was the defining event; in gray, cases where it came elsewhere in the sequence. The map shows the cases where it was the defining event. Events are coded with the final report, so the latest years are incomplete.

Cases per year

2008Defining eventElsewhere in the sequence2026

Where

Open the map
Query with SQL
duckdb -csv -c "SELECT year(c.\"eventDate\") AS year, count(DISTINCT e.case_mkey) AS cases,
    count(DISTINCT e.case_mkey) FILTER (WHERE e.\"isDefiningEvent\") AS defining
  FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = e.case_mkey
  WHERE e.\"tier2Number\" = '390' AND e.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE \"isDefiningEvent\")
  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 these cases

Phase of flight
  • Enroute-cruise23
  • Initial climb16
  • Approach-VFR pattern final12
  • Landing11
  • Takeoff11
  • Enroute9
  • Landing-flare/touchdown6
  • Enroute-climb to cruise5
  • Approach4
  • Enroute-descent4
In the probable cause
Aircraft models

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

Query with SQL
duckdb -csv -c "WITH defining AS (SELECT * FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE \"tier2Number\" = '390' AND \"isDefiningEvent\")
  SELECT * FROM (
  SELECT 'Phase of flight' AS kind, e.\"tier1Number\" AS code, max(e.\"eventTier1Name\") AS name, count(DISTINCT e.case_mkey) AS cases
  FROM defining e
  GROUP BY ALL
  UNION ALL
  SELECT 'Finding in the probable cause', left(f.\"findingCode\", 8), max(f.\"tier4Name\"), count(DISTINCT f.case_mkey)
  FROM defining e JOIN 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f ON f.case_mkey = e.case_mkey AND f.aircrafts_position = e.aircrafts_position AND f.\"inProbableCause\"
  WHERE f.\"findingCode\" GLOB '[0-9][0-9]*'
  GROUP BY ALL
  UNION ALL
  SELECT 'Aircraft model', a.aircraft_model_code, any_value(concat_ws(' ', m.manufacturer, m.model)), count(DISTINCT e.case_mkey)
  FROM defining e JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = e.case_mkey AND a.position = e.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
  )
  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 · 119

NTSB CEN26LA297Accident · Minor injuriesClass 4 · LimitedFinal reportAeroprakt Manufacturing SP Zoo A22LS · Searcy, ARThe flight instructor’s failure to maintain airplane control during landing in gusting wind conditions.Aug 17, 2026 · N22FC · Substantial damageNTSB WPR26FA294Accident · 1 fatalClass 3 · FieldPreliminary reportTextron 172S · Provo, UTOn August 7, 2026, about 1549 mountain daylight time, a Textron Aviation Inc. 172S, N1842E, was substantially damaged when it was involved in an accident near Provo, Utah. The flight instructor sustained serious injuries, and the pilot undergoing instruction…Aug 7, 2026 · N1842E · Substantial damageNTSB WPR26FA254Accident · 2 fatalClass 3 · FieldPreliminary reportBeech 95-B55 (T42A) · Waterloo, ILOn July 9, 2026, at about 2248 central daylight time, a Beech 95-B55, N202DK, was destroyed when it was involved in an accident near Waterloo, Illinois. The pilot and pilot rated passenger were fatally injured. The airplane was operated as a Title 14 Code of…Jul 10, 2026 · N202DK · DestroyedNTSB CEN26LA169Accident · No injuriesClass 4 · LimitedFinal reportLuscombe 8E · Meeker, COThe pilot’s inability to maintain climb performance and clearance from terrain due to the airplane’s encounter with windshear during takeoff.Apr 19, 2026 · N1398K · Substantial damageNTSB CEN26LA159Accident · No injuriesClass 4 · LimitedFinal reportPiper PA46 · Burke, TXThe airplane’s encounter with unexpected low-level wind shear during final approach, which resulted in a hard impact with the runway.Apr 5, 2026 · N95AG · Substantial damageNTSB DCA26WA043AccidentClass 5 · ForeignBoeing 737 · Tomakomai, JapanNov 22, 2025 · JA737X · Substantial damageNTSB DCA26WA004IncidentClass 5 · ForeignBoeing 777 · Nassau, BahamasOct 10, 2025 · G-VIIGNTSB WPR25LA235Accident · No injuriesClass 4 · LimitedFinal reportCessna 180J · Kamiah, IDThe pilot’s loss of airplane control following an encounter with a microburst during takeoff.Aug 1, 2025 · N52175 · Substantial damageNTSB WPR25LA152Accident · No injuriesClass 3 · LimitedPreliminary reportDehavilland DHC-6-300 · Boulder City, NVOn May 6, 2023, about 1450 Pacific daylight time, a DeHavilland DHC-6-300, N142SA, was substantially damaged when it was involved in an accident near Boulder City, Nevada. The 2 pilots and 11 passengers were not injured. The airplane was operated as a Title…May 6, 2025 · N142SA · Substantial damageNTSB DCA25LA197Accident · No injuriesClass 4 · LimitedFinal reportBoeing 737 · Centerville, TNAn encounter with hail during descent.May 2, 2025 · N247WN · Substantial damage
See all 119 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 e.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.\"isDefiningEvent\" AND e.\"tier2Number\" = '390')
  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.