NTSB investigations: Lycoming O-540-F1B5

13 cases on aircraft whose registry engine model is Lycoming O-540-F1B5, where the defining event was Low altitude operation/event. 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.

Cases per year

20092026
NTSB investigations: Lycoming O-540-F1B5 per year, 2009–2026: 13 cases
20091
20101
20141
20151
20182
20191
20201
20213
20231
20261

Latest 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('42353')
      AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e.\"isDefiningEvent\" AND e.\"tier2Number\" = '220'))
  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.

NTSB CEN26LA289Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 Raven 1 · Scribner, NEThe pilot's failure to maintain clearance from power lines while maneuvering at low-level altitude during an agricultural operation.Jul 18, 2026 · N26EH · Substantial damageNTSB CEN23LA328Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Hanlontown, IAThe pilot’s failure to maintain clearance from a cable during spray operations.Jul 26, 2023 · N467HA · Substantial damageNTSB CEN21LA350Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Waukon, IAThe pilot’s failure to maintain adequate clearance from a powerline during an agricultural application pass.Aug 4, 2021 · N775AK · Substantial damageNTSB CEN21LA452Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Mineral Point, WIThe pilot’s failure to see and avoid a wire during an aerial application flight, resulting in a collision with the wire.Jul 20, 2021 · N44XB · Substantial damageNTSB ERA21FA200Accident · 1 fatalClass 3 · FieldFinal reportRobinson Helicopter R44 · Wingate, NCThe pilot’s failure to maintain clearance from a power line during a low-level aerial application flight, resulting in tail rotor impact with the power line, a loss of control, and subsequent impact with the ground.May 2, 2021 · N4528T · Substantial damageNTSB CEN20CA300Accident · No injuriesClass 4 · Data collectionFinal reportRobinson R44 · Dickeyville, WIThe pilot did not maintain clearance from wires during an aerial application flight.Jul 20, 2020 · N570WH · Substantial damageNTSB GAA19CA509Accident · Serious injuriesData collectionFinal reportRobinson R44 · Cypress Island, WAThe pilot's failure to maintain adequate clearance from a tree while maneuvering at a low altitude.Aug 21, 2019 · N7186P · Substantial damageNTSB CEN18FA215Accident · 1 fatalField investigationFinal reportRobinson Helicopter R44 · Oshkosh, WIThe pilot's decision to fly over the river at a low altitude and his failure to maintain clearance with wires during low-level flight.Jun 9, 2018 · N529DW · Substantial damageNTSB GAA18CA247Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 · Sonora, TXThe pilot’s failure to maintain clearance from trees while maneuvering at a low altitude.Apr 18, 2018 · N4487D · Substantial damageNTSB CEN15CA348Accident · Minor injuriesData collectionFinal reportRobinson R44 · Kansasville, WIThe pilot's inability to see and avoid power lines that were low to the ground and a green color that blended with the background crops.Aug 7, 2015 · N20KD · DestroyedNTSB CEN14CA426Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 · Lancaster, WIThe pilot's inadequate monitoring of the environment and failure to maintain clearance from transmission wires during an aerial application flight.Aug 13, 2014 · N8343P · Substantial damageNTSB CEN10CA251Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 · Baraboo, WIThe pilot's failure to maintain clearance with crops while maneuvering during aerial application.May 15, 2010 · N570MD · Substantial damageNTSB WPR09CA339Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 · Marysville, CAThe pilot’s failure to maintain adequate clearance from the power line wires.Jul 13, 2009 · N244HP · Substantial damage