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NTSB defining event · CICTT: Other

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

All 736 cases1,556 anywhere in the sequence
Defining event in
736 cases
In the sequence of
1,556 cases
Fatal cases
105
NTSB code
900

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\" = '900' 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
  • Takeoff110
  • Maneuvering-low-alt flying61
  • Initial climb55
  • Enroute-cruise51
  • Landing-landing roll42
  • Approach-VFR pattern final40
  • Approach37
  • Landing35
  • Enroute35
  • Landing-flare/touchdown22
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\" = '900' 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 · 736

NTSB ERA26LA292Accident · No injuriesClass 4 · LimitedFinal reportExtra Flugzeugproduktions-Und EA 300/LT · Whitehouse, OHThe pilot’s failure to ensure the canopy was properly locked before flight, which resulted in the canopy opening during takeoff.Aug 4, 2026 · N330SB · Substantial damageNTSB WPR26FA284Accident · 1 fatalClass 3 · FieldPreliminary reportCessna 172 · Blackfoot, IDOn August 1, 2026, about 2301 mountain daylight time (MDT), a Cessna 172G, N1166F, was substantially damaged when it was involved in an accident near Blackfoot, Idaho. The pilot was fatally injured, and the two passengers sustained serious injuries. The…Aug 2, 2026 · N1166F · Substantial damageNTSB ERA26LA284Accident · No injuriesClass 4 · LimitedFinal reportPiper PA28 · Palmetto, FLThe flight instructor’s failure to maintain clearance from obstacles during low altitude maneuvering, which resulted in a collision with a fence.Jul 24, 2026 · N44704 · Substantial damageNTSB WPR26LA275Accident · Minor injuriesClass 3 · LimitedPreliminary reportCzech Aircraft Works Mermaid Skeeter 2 · Cougar, WAOn July 22, 2026, about 1129 Pacific daylight time, an experimental amateur built Czech Aircraft Works Mermaid Skeeter 2 airplane, N42SK, was substantially damaged when it was involved in an accident near Cougar, Washington. The pilot was seriously injured.…Jul 22, 2026 · N42SK · Substantial damageNTSB WPR26LA277Accident · Serious injuriesClass 4 · LimitedInvestigation openBell 206B · Stonewall, OKJul 21, 2026 · N2193X · Substantial damageNTSB DCA26WA294Occurrence · No injuriesClass 5 · ForeignAirbus A380 · Grapevine, TXJul 21, 2026 · G-XLEE · No damageNTSB CEN26LA260Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Emerson, IAThe failure of the pilot to verify the loading hose had been disconnected before taking off and the failure of the loader to disconnect the fuel hose from the helicopter.Jul 20, 2026 · N224RH · Substantial damageNTSB CEN26LA264Accident · Serious injuriesClass 4 · LimitedInvestigation openBell 206B · Saint Joseph, ILJul 17, 2026 · N297CA · Substantial damageNTSB WPR26FA233Accident · 2 fatalClass 3 · FieldPreliminary reportCessna 195 · Pasco, WAOn June 24, 2026, about 1428 Pacific daylight time, a float equipped Cessna 195, N3877V, was substantially damaged when it was involved in an accident near Pasco, Washington. The pilot and passenger were fatally injured. The airplane was operated under Title…Jun 24, 2026 · N3877V · Substantial damageNTSB ERA26LA234Accident · Serious injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Mayesville, SCThe pilot’s failure to remain clear of a power line during an aerial application flight.Jun 8, 2026 · N144CD · Substantial damage
See all 736 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\" = '900')
  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.