# NTSB investigations: Lycoming IO-540-AE1A5: Loss of engine power (total) 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 ANC26LA084](https://openairdocs.org/ntsb/ANC26LA084.md): Robinson Helicopter R44 II · Anthony, FL · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Aug 13, 2026 · N861MP · Substantial damage > On August 12, 2026, at approximately 2305 eastern daylight time, a Robinson R44 Raven II helicopter, N861MP, was substantially damaged when it was involved in an accident near Anthony, Florida. The pilot and passenger sustained minor injuries. The helicopter… - [NTSB WPR24LA241](https://openairdocs.org/ntsb/WPR24LA241.md): Robinson Helicopter R44 II · Herriman, UT · Accident · No injuries · Class 3 · Limited · Final report · Jul 13, 2024 · N6960 · Substantial damage > A hard landing following a total loss of engine power due to fuel starvation as a result of the improper idle setting of the helicopter’s engine. Contributing to the loss of engine power was the instructor’s reduction of engine power past that recommended by… - [NTSB CEN21LA284](https://openairdocs.org/ntsb/CEN21LA284.md): Robinson Helicopter R44 II · Reserve, LA · Accident · No injuries · Class 3 · Limited · Final report · Jun 10, 2021 · N202SM · Substantial damage > A total loss of engine power for undetermined reasons. - [NTSB GAA21WA047](https://openairdocs.org/ntsb/GAA21WA047.md): Robinson Helicopter R44 II · Rosh Pinna, Israel · Accident · Minor injuries · Class 5 · Foreign · Mar 13, 2021 · N97KC · Substantial damage - [NTSB CEN21LA109](https://openairdocs.org/ntsb/CEN21LA109.md): Robinson Helicopter R44 II · Albany, TX · Accident · No injuries · Class 3 · Limited · Final report · Jan 9, 2021 · N322SH · Substantial damage > The pilot’s inadequate pretakeoff checks which resulted in the magneto switch (key) remaining in the OFF position during the takeoff sequence and initial climb and the right magneto grounding intermittently. - [NTSB WPR20LA119](https://openairdocs.org/ntsb/WPR20LA119.md): Robinson R44 · Hillsboro, OR · Accident · No injuries · Class 3 · Limited · Final report · Apr 6, 2020 · N725GT · Substantial damage > The total loss of engine power during takeoff due to the delamination of the fuel servo induction air inlet duct tube. - [NTSB CEN19FA160](https://openairdocs.org/ntsb/CEN19FA160.md): Robinson R44 · Cass, AR · Accident · 3 fatal · Class 3 · Field · Final report · Jun 3, 2019 · N41351 · Substantial damage > A loss of engine power for reasons that could not be determined based on the available information. - [NTSB ERA19FA142](https://openairdocs.org/ntsb/ERA19FA142.md): Robinson R44 II · Tampa, FL · Accident · 1 fatal · Field investigation · Final report · Apr 4, 2019 · N4046J · Substantial damage > Contamination of and an inadequate bond between the two layers of fabric comprising the helicopter engine's air induction inlet duct, which resulted a partial collapse of the duct, obstruction of the airflow into the engine, and a total loss of engine power. - [NTSB WPR16LA165](https://openairdocs.org/ntsb/WPR16LA165.md): Robinson Helicopter R44 II · Gunnison, UT · Accident · No injuries · Limited investigation · Final report · Aug 12, 2016 · N247DB · Substantial damage > A total loss of engine power for reasons that could not be determined based on the available evidence. - [NTSB ANC16IA013](https://openairdocs.org/ntsb/ANC16IA013.md): Robinson Helicopter R44 II · Anchorage, AK · Incident · No injuries · Incident investigation · Final report · Jan 7, 2016 · N395CE · No damage > The overhaul facility's improper and excessive use of an approved lubricant during overhaul of the fuel injection servo, which resulted in a disruption of fuel flow and a total loss of engine power. - [NTSB ANC16LA010](https://openairdocs.org/ntsb/ANC16LA010.md): Robinson Helicopter R44 II · Valdez, AK · Accident · No injuries · Limited investigation · Final report · Dec 16, 2015 · N255VS · Substantial damage > The overhaul facility’s improper and excessive use of an approved lubricant during overhaul of the fuel injection servo, which resulted in a disruption of fuel flow and a total loss of engine power. - [NTSB WPR14LA353](https://openairdocs.org/ntsb/WPR14LA353.md): Robinson Helicopter R44 II · Pahrump, NV · Accident · Minor injuries · Limited investigation · Final report · Aug 24, 2014 · N4246Z · Substantial damage > A total loss of engine power during a practice autorotation for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation. - [NTSB WPR09LA460](https://openairdocs.org/ntsb/WPR09LA460.md): Robinson Helicopter R44 II · Valley Center, CA · Accident · Serious injuries · Limited investigation · Final report · Sep 20, 2009 · N4174P · Substantial damage > The failure of the engine’s camshaft due to fatigue of unknown origin. - [NTSB WPR09LA312](https://openairdocs.org/ntsb/WPR09LA312.md): Robinson Helicopter R44 II · Lakeport, CA · Accident · No injuries · Limited investigation · Final report · Jun 25, 2009 · N515DG · Substantial damage > A loss of engine power while maneuvering 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41899') 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" = '341')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-events/341/cases?engine=41899 --- 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.