NTSB investigations: Beech H35

9 cases on aircraft the registry lists as Beech H35, where the first occurrence was “Loss of engine power(total) - nonmechanical”. 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

19832026

NTSB investigations: Beech H35 per year, 1983–2026: 9 cases
1983	1
1988	1
1989	1
1990	1
1993	1
1995	1
1997	1
1998	1
1999	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" = 353)) 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\" = 353))
  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" = 353))
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 CHI99LA084Accident · Minor injuriesLimited investigationFinal reportBeech 35 · Lincoln, NEthe pilot's failure to perform an aircraft preflight which resulted in him selecting a fuel tank which had insufficient fuel for the flight and the subsequent fuel starvation.Feb 9, 1999 · N5540D · Substantial damage NTSB FTW98LA300Accident · No injuriesLimited investigationFinal reportBeech H35 · Marshall, TXThe loss of engine power due to fuel starvation as a result of the improper position of the fuel selector. A factor was the pilot's lack of experience in this make and model of airplane.Jul 6, 1998 · N5554D · Substantial damage NTSB LAX97LA298Accident · No injuriesLimited investigationFinal reportBeech H35 · Vacaville, CAThe pilot's mismanagement of the fuel supply which resulted in fuel starvation. A contributing factor was inoperative fuel gauges.Aug 22, 1997 · N4689D · Substantial damage NTSB CHI96FA002Accident · 2 fatalField investigationFinal reportBeech H35 · Ozark, MOthe pilot's improper fuel management which resulted in fuel starvation, and his failure to maintain airspeed during the forced landing.Oct 6, 1995 · N625T · Destroyed NTSB SEA93LA130Accident · No injuriesLimited investigationFinal reportBeech H35 · Douglas, WYThe improper maintenance/replacement of a fuel hose and the blocked fuel vapor return system. A factor relating to the accident was the cattle guard fence posts beside the road.Jun 14, 1993 · N368B · Substantial damage NTSB LAX90LA178Accident · Serious injuriesLimited investigationFinal reportBeech H35 · San Marcos, CAThe pilot's improper fuel management.May 17, 1990 · N5586D · Substantial damage NTSB ATL89FA106Accident · 2 fatalField investigationFinal reportBeech H35 · Knoxville, TNThe pilot's continued operation of the airplane with a known mechanical defect in the engine carburetor/fuel supply system as evidenced by the past history of engine stoppage during ground operation. Contributing to the accident was the pilot's performance of…Mar 16, 1989 · N5403D · Substantial damage NTSB LAX89LA047Accident · No injuriesLimited investigationFinal reportBeech H35 · Corning, CAThe flt originated at hayward, CA, with a stop at san carlos, CA and Corning, CA. The plt's destination was the red bluff arpt (rbl). The plt reported that when he departed hayward both main fuel tanks were full. He flew to san carlos where he picked up three…Nov 12, 1988 · N5594D · Destroyed NTSB FTW84FA103Accident · 1 fatalField investigationFinal reportBeech H35 · Taos, NMThe plt stated that a new fuel system had just recently been installed in miami, FL & he forgot about the new system while switching tanks & accidently turned it to the off position. When the eng quit he realized what he had done & switched back to a full…Dec 23, 1983 · N7933D · Substantial damage