Final NTSB investigations: Lycoming IO-540 series
1,014 cases on aircraft whose registry engine model is Lycoming IO-540 series. 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
| 1964 | 1 |
|---|---|
| 1965 | 2 |
| 1966 | 1 |
| 1967 | 4 |
| 1968 | 1 |
| 1969 | 2 |
| 1970 | 3 |
| 1971 | 1 |
| 1972 | 3 |
| 1973 | 1 |
| 1974 | 1 |
| 1975 | 1 |
| 1976 | 4 |
| 1977 | 3 |
| 1978 | 6 |
| 1979 | 7 |
| 1980 | 18 |
| 1981 | 10 |
| 1982 | 16 |
| 1983 | 17 |
| 1984 | 30 |
| 1985 | 20 |
| 1986 | 17 |
| 1987 | 15 |
| 1988 | 12 |
| 1989 | 11 |
| 1990 | 14 |
| 1991 | 14 |
| 1992 | 18 |
| 1993 | 22 |
| 1994 | 13 |
| 1995 | 13 |
| 1996 | 16 |
| 1997 | 16 |
| 1998 | 16 |
| 1999 | 28 |
| 2000 | 26 |
| 2001 | 32 |
| 2002 | 34 |
| 2003 | 28 |
| 2004 | 33 |
| 2005 | 29 |
| 2006 | 29 |
| 2007 | 34 |
| 2008 | 27 |
| 2009 | 19 |
| 2010 | 28 |
| 2011 | 22 |
| 2012 | 26 |
| 2013 | 21 |
| 2014 | 26 |
| 2015 | 18 |
| 2016 | 17 |
| 2017 | 28 |
| 2018 | 26 |
| 2019 | 16 |
| 2020 | 15 |
| 2021 | 27 |
| 2022 | 22 |
| 2023 | 21 |
| 2024 | 13 |
| 2025 | 15 |
| 2026 | 5 |
Where
Open the mapLatest 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.\"completionStatus\" = 'Completed'
AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41530', '41585'))
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."completionStatus" = 'Completed'
AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41530', '41585'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun 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 WPR26LA200Accident · No injuriesClass 4 · LimitedFinal reportMaule M-7-260C · Kanab, UTThe pilot’s failure to maintain directional control during the landing roll with gusting crosswind conditions.NTSB CEN26LA122Accident · No injuriesClass 4 · LimitedFinal reportCessna 182 · Golden, MOThe pilot’s failure to establish stabilized approach that would have allowed the airplane to touch down with adequate runway remaining. Contributing to the accident was the pilot’s failure to execute a go-around.NTSB CEN26LA101Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Sullivan, MOThe pilot’s failure to maintain clearance from powerlines during low-level operations.NTSB WPR26LA083Accident · No injuriesClass 4 · LimitedFinal reportRobinson R44 · Parkman, WYThe pilots’ failure to maintain separation while conducting air work in a common operational area. Contributing to the accident was the pilots’ divided attention associated with the mission activity and unreliable radio communications.NTSB WPR26LA084Accident · No injuriesClass 4 · LimitedFinal reportMaule M-7-235B · Cody, WYThe pilot's failure to maintain directional control during landing roll.NTSB ERA26LA086Accident · No injuriesClass 4 · LimitedFinal reportPipistrel D O O Panthera X152 · Atlanta, GAThe pilot’s failure to extend the landing gear before landing.NTSB ERA26LA013Accident · No injuriesClass 4 · LimitedFinal reportCessna T182T · Venice, FLThe pilot’s failure to maintain directional control while taxiing in gusty, quartering tailwind conditions.NTSB CEN25LA398Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-60-601P · Del Norte, COThe loss of directional control during landing roll due to a flat tire.NTSB ERA25LA363Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-32R-300 · White Plains, NYThe pilot’s failure to maintain proper glidepath during a night visual approach, which resulted in a collision with the runway lighting system. Contributing to the outcome was the pilot’s momentary disorientation due to glare from the runway approach lighting…NTSB ERA25LA358Accident · No injuriesClass 4 · LimitedFinal reportCessna 182 · Blue Ridge, GAThe pilot’s failure to obtain the proper touchdown point, which resulted in a runway overrun.NTSB CEN25LA387Accident · Serious injuriesClass 4 · LimitedFinal reportPiper PA-32R-301 · Oxford, MSThe pilot’s exceedance of the airplane’s critical angle of attack during the initial takeoff climb, which resulted in an aerodynamic stall and impact with terrain.NTSB CEN25LA372Accident · No injuriesClass 4 · LimitedFinal reportCessna 182T · Seymour, INThe flight instructor’s improper landing flare which resulted in a bounced landing and loss of control.NTSB ERA25LA325Accident · No injuriesClass 4 · LimitedFinal reportCessna 182 · Lebanon, OHThe pilot’s failure to maintain directional control of the airplane during takeoff, which resulted in a runway excursion and collision with a sign.NTSB ANC25LA099Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Petersville, AKThe pilot’s exceedance of the helicopter’s available power while landing in a remote confined area, which resulted in rotor droop and a hard landing.NTSB ERA25LA298Accident · No injuriesClass 4 · LimitedFinal reportPaschal JR Roy E Velocity XL RG · Columbia, SCA landing gear collapse during landing.NTSB ERA25LA215Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA32-300 · Branford, CTMaintenance personnel's improper installation and inspection of the crankshaft gear bolt during major overhaul, which resulted in the crankshaft gear disengaging from the accessory gears which led to a total loss of engine power.NTSB WPR25LA118Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Hobbs, NMThe student pilot’s loss of directional control during a hover, which resulted in an impact with terrain.NTSB ERA25LA102Accident · No injuriesClass 4 · LimitedFinal reportDaniel A Robinson High 6 Berkut 540 · Orlando, FLThe pilot’s failure to verify the canopy latches were in the locked position prior to takeoff.NTSB CEN25LA073Accident · Serious injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Buras, LAThe pilot’s failure to maintain control during a hover taxi with a quartering tailwind.NTSB ANC25LA015Accident · No injuriesClass 4 · LimitedFinal reportGippsaero PTY GA8 · Nightmute, AKThe pilot’s loss of directional control while taxiing in gusting wind conditions.NTSB CEN25LA059Accident · No injuriesClass 3 · LimitedFinal reportCessna 182T · Pearland, TXThe AA-5 pilot’s failure to maintain separation from the 182T during approach and landing, which resulted in a ground collision during the landing roll. Contributing to the accident was the failure of the AA-5’s electrical system, which prevented the AA-5…NTSB CEN25FA019Accident · 4 fatalClass 2 · FieldFinal reportRobinson R44 · Houston, TXThe pilot’s failure to maintain clearance from a lighted radio tower during a visual night flight. Contributing to the accident was the air traffic controller’s failure to issue a safety alert notifying the pilot of the flight’s unsafe proximity to the tower.NTSB CEN25LA018Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA-32R-301 · Van, TXThe mechanic’s improper maintenance of the engine’s air induction scat duct, which collapsed during the flight and resulted in a loss of engine power.NTSB CEN24LA378Accident · No injuriesClass 3 · LimitedFinal reportPiper PA32 · Caro, MIA total loss of engine power due to maintenance personnel’s failure to properly tighten the fuel supply line B-nut at the fuel servo.NTSB CEN24LA376Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-32-300 · Pierz, MNThe pilot’s inadequate fuel management which resulted in the loss of engine power due to fuel starvation.NTSB ANC24LA055Accident · No injuriesClass 4 · LimitedFinal reportGippsland GA-8 · Tuntutuliak, AKThe pilot's failure to maintain directional control during takeoff after an encounter with a gusting wind, which resulted in a wing strike.NTSB WPR24LA166Accident · No injuriesClass 4 · LimitedFinal reportThomas J Spencer RV-10 · Snohomish, WAThe pilot’s failure to attain a proper touchdown point during landing with a tailwind which resulted in a runway overrun.NTSB ERA24LA240Accident · Serious injuriesClass 4 · LimitedFinal reportAero Commander Callair A-9B · Zebulon, NCA total loss of engine power while maneuvering due to fuel starvation.NTSB WPR24LA146Accident · Minor injuriesClass 3 · LimitedFinal reportRobert Sterling 4P · Lake Havasu City, AZA loss of engine power during initial climb due to fuel vapor lock. Contributing to the accident was the incorrect installation of the ancillary fuel supply system components.NTSB ERA24FA176Accident · 1 fatalClass 3 · FieldFinal reportPiper PA-32R-301 · Knoxville, TNThe pilot’s decision to depart into an area of instrument meteorological and icing conditions, which resulted in loss of airplane control and a subsequent in-flight breakup.NTSB CEN24LA155Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA-32-301 · Sullivan, MOA bearing failure that resulted in fatigue failure of the crankshaft and a subsequent total loss of engine power.NTSB WPR24LA111Accident · Minor injuriesClass 4 · LimitedFinal reportPiper Aerostar 601P · Grass Valley, CAThe pilot’s failure to maintain directional control in a gusting wind condition.NTSB ANC24LA013Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Glacier View, AKA sudden stoppage of the tail rotor for unknown reasons, which resulted in the tortional overload failure of the tail rotor driveshaft.NTSB CEN24LA081Accident · No injuriesClass 4 · LimitedFinal reportMaule M-6-235 · Beaumont, TXThe pilot’s failure to maintain directional control during landing in crosswind conditions, which resulted in a ground loop on the runway.NTSB ERA24LA042Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Ogdensburg, NYThe loss of control of the helicopter during taxi, which resulted in rollover.NTSB CEN23LA380Accident · No injuriesClass 4 · LimitedFinal reportCessna 182T · Klein, TXThe pilot’s failure to maintain directional control during the crosswind landing.NTSB WPR23LA363Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-32-300 · Needles, CAAn encounter with windshear during the initial climb after takeoff, resulting in a loss of control and a subsequent hard landing.NTSB ERA23LA359Accident · No injuriesClass 4 · LimitedFinal reportAero Commander 500 S · Key West, FLA total loss of engine power for reasons that could not be determined.NTSB ERA23LA306Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA-32RT-300 · Mount Gilead, OHThe pilot’s improper fuel management by not switching fuel tanks in flight, resulting in fuel starvation to the engine and a total loss of engine power.NTSB WPR23LA272Accident · No injuriesClass 3 · LimitedFinal reportMellinger B L III/Briebleb R Glasair III · Pahrump, NVA fuel leak due to damaged threads on a fuel line fitting, which resulted in an interruption of fuel flow and a total loss of engine power due to fuel starvation.NTSB WPR23LA263Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Marble Falls, TXA total loss of engine power due to fuel contamination from an unknown source.NTSB CEN23FA285Accident · 1 fatalClass 3 · FieldFinal reportPiper PA-60-601P · Burlington, COThe pilot’s visual flight rules flight into instrument meteorological conditions, which resulted in a loss of control in flight and subsequent impact with terrain.NTSB ANC23FA045Accident · 2 fatalClass 3 · FieldFinal reportPiper PA-32-300 · Old Harbor, AKThe pilot’s failure to maintain clearance from rising terrain. Contributing to the accident was the pilot’s delayed decision to turn away from the terrain.NTSB CEN23LA268Accident · Serious injuriesClass 3 · LimitedFinal reportVelocity Velocity XL · Tahlequah, OKA total loss of engine power for undetermined reasons.NTSB WPR23LA216Accident · No injuriesClass 3 · LimitedFinal reportCessna 172R · Santa Monica, CAA failure of the nose wheel upper torque link bolt, which resulted in a loss of steering control. Contributing to the accident were maintenance personnel’s failure to inspect and replace the fractured bolt and the pilot’s oversight of the bolt during his…NTSB CEN23FA201Accident · 1 fatalClass 3 · FieldFinal reportCessna 182T · Grand Isle, LAThe pilot’s operation of the airplane while intoxicated, resulting in its impact with the ocean.NTSB WPR23LA170Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Van Nuys, CAThe pilot’s failure to maintain lateral control of the helicopter, which resulted in a hard landing.NTSB ANC23LA028Accident · No injuriesClass 4 · LimitedFinal reportMaule M-5-235C · Palmer, AKThe pilot's delayed decision to execute a go-around maneuver while landing with excess airspeed into a short strip, which resulted in a runway overrun and subsequent loss of control.NTSB WPR23FA137Accident · 1 fatalClass 3 · FieldFinal reportCessna 182S · Alcova, WYThe airplane’s encounter with low level wind shear associated with moderate turbulence, which resulted in a loss of airplane control.NTSB ERA23LA148Accident · Serious injuriesClass 3 · LimitedFinal reportVelocity Velocity SE · Bahia Key, FLA total loss of engine power for undetermined reasons.