Major NTSB investigations, MD

180,616 investigations by the National Transportation Safety Board since 1962: 174,594 accidents, the rest incidents and other occurrences. Each has NTSB’s narrative and, once the investigation is done, its probable cause; since 2008, its findings and sequence of events.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19842026

Major NTSB investigations, MD per year, 1984–2026: 6 cases
1984	2
1986	1
2005	1
2008	1
2014	1

Where

Open the map

Latest cases

Query with SQL

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."eventStateOrRegion" = 'MD' AND c."eventCountry" = 'USA' AND (c.board_report_url IS NOT NULL OR c."investigationClass" = 'Class 1' OR c."caseType" = 'Major - Launch') ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

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.\"eventStateOrRegion\" = 'MD' AND c.\"eventCountry\" = 'USA'
    AND (c.board_report_url IS NOT NULL OR c.\"investigationClass\" = 'Class 1' OR c.\"caseType\" = 'Major - Launch')
  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."eventStateOrRegion" = 'MD' AND c."eventCountry" = 'USA'
  AND (c.board_report_url IS NOT NULL OR c."investigationClass" = 'Class 1' OR c."caseType" = 'Major - Launch')
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.

NTSB DCA15MA029Accident · 6 fatalClass 1 · MajorFinal reportEmbraer EMB-500 · Gaithersburg, MDthe pilot's conduct of an approach in structural icing conditions without turning on the airplane's wing and horizontal stabilizer deice system, leading to ice accumulation on those surfaces, and without using the appropriate landing performance speeds for…Dec 8, 2014 · N100EQ · Destroyed NTSB MIA08MA203Accident · 4 fatalClass 1 · MajorFinal reportAerospatiale SA365N-1 D · District Heights, MDThe pilot's attempt to regain visual conditions by performing a rapid descent and his failure to arrest the descent at the minimum descent altitude during a nonprecision approach. Contributing to the accident were (1) the pilot’s limited recent instrument…Sep 28, 2008 · N92MD · Substantial damage NTSB NYC05MA039Accident · 2 fatalMajor investigationFinal reportEurocopter Deutschland EC 135 P2 · Oxon Hill, MDThe pilot's failure to identify and arrest the helicopter's descent, which resulted in controlled flight into terrain. Contributing to the accident were the dark night conditions, limited outside visual references, and the lack of an operable radar altimeter…Jan 11, 2005 · N136LN · Destroyed NTSB BFO87MA007Accident · 1 fatalMajor investigationFinal reportBeech 65-A80 · Baltimore, MDDrg clb after tkof, l eng seized. Plt said he atmtd 1 eng restart; prop would not rotate or feather. No emerg declared. Plt stated eng shut-dwn proc was used, scientific bus sws were shut off, r gen was recycled & appeared to oper normally. Plts got imt…Nov 8, 1986 · N304D · Destroyed NTSB NYC84MA151Accident · 2 fatalMajor investigationFinal reportPiper PA-60-601P · Cockeysville, MDOn the day of departure the plt had received a 30 min familiarization flt upon completion of the superstar conversion. Emphasis was directed to eng gages, fuel flow & counter, & power settings. The flt was flown at 5,500 ft. the plt then obtained a wx…Apr 28, 1984 · N6079R · Destroyed NTSB NYC84MA102Accident · 3 fatalMajor investigationFinal reportPiper PA-31 · Cumberland, MDApprox 16 min prior to the accident the plt was cleared for the localizer DME approach. The acft collided with the mountainous terrain on a hdg of about 220 degrees at approx 8.5 DME on a bearing of 051 degrees from the arpt. As indicated on the loc/dme rwy…Mar 5, 1984 · N6629L · Destroyed