NTSB defining event · CICTT: Turbulence
CICTT occurrence categories (PDF)CICTT phases of flight (PDF)
- Defining event in
- 29 cases
- In the sequence of
- 37 cases
- Fatal cases
- 7
- NTSB code
- 361
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
| 2008 | 2 |
|---|---|
| 2009 | 1 |
| 2011 | 1 |
| 2012 | 3 |
| 2013 | 2 |
| 2014 | 3 |
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 2 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 4 |
Where
Open the mapQuery 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\" = '361' 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.
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" = '361' 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
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
In these cases
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\" = '361' 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.
WITH defining AS (SELECT * FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "tier2Number" = '361' 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 DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Newest cases · 29
NTSB DCA26WA089Accident · Serious injuriesClass 5 · ForeignBoeing 737-800 · (Birmingham, United KingdomNTSB GAA25WA279Occurrence · No injuriesClass 5 · ForeignBeech 1900 · Aix-les-Milles, FranceNTSB CEN25LA132Accident · No injuriesClass 4 · LimitedFinal reportTaylorcraft BC12 · Russellville, ARThe failure of the U.S. Army helicopter pilots to yield the right-of-way to the landing airplane, which resulted in the airplane encountering wake turbulence emitted from the three departing U.S. Army helicopters, a subsequent loss of directional control, and…NTSB ANC25LA020Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 172M · Kapolei, HIThe flight instructor’s failure to avoid wake turbulence from a heavy airplane departing from a parallel runway, which resulted in a loss of airplane control during initial climb after a touch-and-go landing.NTSB WPR25LA041Accident · No injuriesClass 4 · LimitedFinal reportCirrus Design SR22T · Palm Springs, CAThe pilot’s failure to maintain clearance from a commercial airliner which resulted in an encounter with wake turbulence and subsequent loss of control resulting in impact with terrain.NTSB ANC24LA093Accident · Minor injuriesClass 4 · LimitedFinal reportCessna 180B · Anchorage, AKThe pilot’s encounter with wake turbulence, which resulted in substantial damage to the airplane.NTSB ERA24LA212Accident · Minor injuriesClass 4 · LimitedFinal reportPiper PA-20-135 · Georgetown, OHAn inadvertent encounter with the rotor wash of a nearby hovering helicopter during landing, which resulted in a loss of control and a runway excursion.NTSB WPR24LA085Accident · Serious injuriesClass 3 · LimitedFinal reportEvektor-Aerotechnik A S Harmony LSA · Santa Ana, CAA loss of airplane control due to wake turbulence resulting from the instructor pilot’s decision to continue the landing into a drifting wake vortex.NTSB ERA23LA353Accident · No injuriesClass 4 · LimitedFinal reportBellanca 7ECA · Hopkinsville, KYThe pilot’s inadvertent encounter with helicopter wake turbulence during initial climb, which resulted in a loss of airplane control.NTSB WPR23LA277Accident · Minor injuriesClass 4 · LimitedFinal reportEvolution Revolt · Casper, WYThe pilot’s loss of directional control during landing after encountering wake turbulence.
See all 29 casesQuery 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\" = '361') 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.
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" = '361') ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.