# NTSB investigations: Lycoming O-540-F1B5, FL NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. ## Latest cases - [NTSB ANC26LA051](https://openairdocs.org/ntsb/ANC26LA051.md): Robinson R44 · Pembroke Pines, FL · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Jun 13, 2026 · N336SG · Substantial damage > On June 13, 2026, about 1318 eastern daylight time, a Robinson R44 Raven I helicopter, N336SG, was substantially damaged when it was involved in an accident at the North Perry Airport (HWO), Hollywood, Florida. The pilot and three passengers sustained minor… - [NTSB ERA24LA166](https://openairdocs.org/ntsb/ERA24LA166.md): Robinson Helicopter R44 · Key Biscayne, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 6, 2024 · N234ZT · Substantial damage > A loss of engine power for reasons that could not be determined. - [NTSB ERA24LA079](https://openairdocs.org/ntsb/ERA24LA079.md): Robinson Helicopter R44 · Daytona Beach, FL · Accident · No injuries · Class 4 · Limited · Final report · Dec 30, 2023 · N828AK · 2 aircraft · Substantial damage > The UAS operator’s failure to operate within the limitations of the COA that he was using to operate inside class C airspace, which resulted in a collision between the UAS and the helicopter. - [NTSB ERA23LA350](https://openairdocs.org/ntsb/ERA23LA350.md): Robinson Helicopter R44 · Immokalee, FL · Accident · Serious injuries · Class 4 · Limited · Final report · Aug 26, 2023 · N4147Q · Substantial damage > The flight instructor’s inadequate supervision of the student pilot during hover flight, which resulted in main rotor blade contact with the ground after the student pilot applied a sudden control input. - [NTSB ERA23LA021](https://openairdocs.org/ntsb/ERA23LA021.md): Robinson Helicopter R44 · Daytona Beach, FL · Accident · Minor injuries · Class 4 · Limited · Final report · Oct 14, 2022 · N306MB · Substantial damage > The pilot’s misjudged landing point which resulted in a loss of control and collision with terrain. - [NTSB ERA22LA131](https://openairdocs.org/ntsb/ERA22LA131.md): Robinson Helicopter R44 · Miami Beach, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Feb 19, 2022 · N544SB · Substantial damage > A loss of engine power due to a stuck valve, which resulted in an autorotation and a hard landing in water. - [NTSB CEN19LA174](https://openairdocs.org/ntsb/CEN19LA174.md): Robinson R44 · Key West, FL · Accident · No injuries · Class 3 · Limited · Final report · Jun 17, 2019 · N1241W · Substantial damage > The failure of maintenance personnel to properly secure the right-side tail boom mounting bolts which resulted in the failure of the bolts and an inflight separation of the tail rotor. - [NTSB GAA19CA124](https://openairdocs.org/ntsb/GAA19CA124.md): Robinson R44 · Santa Maria Island, FL · Accident · Serious injuries · Data collection · Final report · Jan 2, 2019 · N772MG · Substantial damage > The pilot's loss of helicopter control while maneuvering at a low altitude after being struck in the head by a bird. - [NTSB GAA18CA450](https://openairdocs.org/ntsb/GAA18CA450.md): Robinson R44 · Lantana, FL · Accident · Minor injuries · Data collection · Final report · Jul 27, 2018 · N479AT · Substantial damage > The student pilot’s improper pitch control during landing, which resulted in a dynamic rollover. - [NTSB ERA14CA143](https://openairdocs.org/ntsb/ERA14CA143.md): Robinson Helicopter R44 · Orlando, FL · Accident · No injuries · Data collection · Final report · Feb 10, 2014 · N7040U · Substantial damage > The pilot's inadequate preflight inspection in which he failed to remove the tail rotor covers, which resulted in the failure of the tail rotor drive shaft during engine start. - [NTSB ERA13FA186](https://openairdocs.org/ntsb/ERA13FA186.md): Robinson R44 · Miami, FL · Accident · 2 fatal · Field investigation · Final report · Apr 3, 2013 · N3101H · Destroyed > The mechanic's failure to properly secure the pitch link hardware of one main rotor blade to the rotating swash plate, which resulted in the pitch link separating in flight and the pilot's subsequent loss of control. Contributing to the accident was the… - [NTSB ERA12LA429](https://openairdocs.org/ntsb/ERA12LA429.md): Robinson Helicopter R44 · Tallahassee, FL · Accident · No injuries · Limited investigation · Final report · Jul 4, 2012 · N561CH · Substantial damage > The pilot’s failure to maintain awareness of the helicopter’s altitude while attempting to troubleshoot the clutch actuator warning light, which resulted in an inadvertent descent and impact with water. Contributing to the accident was the pilot's possible… - [NTSB ERA10LA019](https://openairdocs.org/ntsb/ERA10LA019.md): Robinson R44 · La Belle, FL · Accident · Serious injuries · Limited investigation · Final report · Oct 15, 2009 · N3038W · Substantial damage > The loss of main rotor rpm due to the failure of one or more of the drive belts for undetermined reasons. ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```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" = 'FL' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('42353')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=42353&state=FL --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.