NTSB investigations: Beech H35

6 cases on aircraft the registry lists as Beech H35, where the first occurrence was “In flight encounter with weather”. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19852026

NTSB investigations: Beech H35 per year, 1985–2026: 6 cases
1985	1
1986	1
1987	1
1994	1
1998	1
2001	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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1151520') AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 240)) 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.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1151520')
      AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 240))
  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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1151520')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 240))
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 ANC01LA080Accident · No injuriesLimited investigationFinal reportBeech H35 · Chitina, AKThe pilot's inadequate compensation for wind conditions. Factors associated with the accident are variable winds, and a downdraft.Jul 1, 2001 · N5429D · Substantial damage NTSB FTW98FA339Accident · 2 fatalField investigationFinal reportBeech H35 · La Veta, COThe pilot's poor judgment by intentionally flying into instrument meteorological conditions without proper certification. Factors were his failure to obtain a weather briefing, and the existing weather conditions that included clouds, rain, and obscuration.Jul 26, 1998 · N35DE · Destroyed NTSB ATL94FA131Accident · 2 fatalField investigationFinal reportBeech H-35 · Jackson, ALThe pilot's failure to avoid an area of thunderstorm activity, which resulted in a loss of control and the designed structural limits of the airframe being exceeded. The thunderstorms were a factor in the accident.Jul 5, 1994 · N7917D · Destroyed NTSB FTW88FA032Accident · 3 fatalField investigationFinal reportBeech H35 · Port Mansfield, TXThe plt rcvd svrl wx briefings bfr tkof & was adzd of convective activity along the initial route of flt north of the arpt. The planned dep route was twd the wx. While discussing altn routing possibilities, the plt indcd he would ask ATC for deviation arnd…Nov 25, 1987 · N5568D · Destroyed NTSB FTW86LA048Accident · No injuriesLimited investigationFinal reportBeech H35 · Talihina, OKAcft had a long descent from cruise alt of 7500' MSL at reduced power setting due to plt's desire to avoid the moderate turbulence at lower altitudes. On short final, over tall trees, the acft encountered a downdraft. The plt stated that when he applied power…Mar 25, 1986 · N5531D · Substantial damage NTSB FTW85MA297Accident · 3 fatalMajor investigationFinal reportBeech H35 · El Reno, OKThe acft took off at 1054 CDT in VMC with no flt plan. At that time, there was a rprtd ceiling of 1800 ft. at 1112 CDT, the plt rprtd he was at 10,000 ft, 'just reaching the tops.' At 1137 CDT, he stated 'we're about 60 west of oke city, westbound to sayre…Jul 25, 1985 · N356B · Destroyed