Fatal NTSB investigations: Lycoming AEIO-540 series
35 cases on aircraft whose registry engine model is Lycoming AEIO-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
| 1985 | 1 |
|---|---|
| 1990 | 1 |
| 1991 | 1 |
| 1995 | 2 |
| 2000 | 1 |
| 2001 | 2 |
| 2003 | 6 |
| 2004 | 1 |
| 2005 | 1 |
| 2006 | 3 |
| 2008 | 2 |
| 2009 | 2 |
| 2010 | 1 |
| 2012 | 2 |
| 2015 | 1 |
| 2016 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2022 | 1 |
| 2024 | 2 |
| 2025 | 2 |
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.\"highestInjuryLevel\" = 'Fatal'
AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41568'))
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."highestInjuryLevel" = 'Fatal'
AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41568'))
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 ERA25FA231Accident · 2 fatalClass 3 · FieldPreliminary reportPitts S2 · Broadway, NCOn June 20, 2025, at 0900 eastern daylight time, a Pitts Aerobatics S-2B, N79AV, was destroyed when it was involved in an accident near Broadway, North Carolina. The private pilot and the commercial pilot-rated passenger were fatally injured. The airplane was…NTSB ERA25FA185Accident · 1 fatalClass 3 · FieldFinal reportMX Aircraft Tech PTY MXS · Hampton, VAA counterweight plug that loosened during the accident flight, jammed the elevator, and resulted in loss of control during landing.NTSB ERA24FA391Accident · 1 fatalClass 3 · FieldFinal reportAviat S-1-11B · Chapmansboro, TNThe pilot’s loss of airplane control while performing an aerobatic maneuver, which resulted in the airplane entering an inverted flat spin at an altitude too low for recovery.NTSB WPR24FA156Accident · 1 fatalClass 3 · FieldFinal reportExtra Flugzeugbau EA 300/L · Bandera, WAThe pilot’s decision to continue flight into icing conditions and inclement weather, which likely led to spatial disorientation when he attempted to divert from the planned course to the destination airport.NTSB WPR22FA240Accident · 1 fatalClass 3 · FieldFinal reportExtra Flugzeugbau EA 300/L · Boulder City, NVThe failure of the pilot to maintain control of the airplane by exceeding the airplane’s critical angle of attack while maneuvering in a turning climb at a low altitude, which resulted in an aerodynamic stall and spin from which the pilot was unable to…NTSB CEN20WA408Accident · 2 fatalForeign investigationRaven Aircraft Corppration Raven · Moosburg an der Isar, GermanyNTSB CEN19FA270Accident · 2 fatalClass 3 · FieldFinal reportPitts S2 · New Orleans, LAA loss of control for undetermined reasons.NTSB CEN16WA160Accident · 1 fatalForeign investigationExtra Flugzeugbau EA 300/L · Cozumel, MexicoOn April 17, 2016, at 1940 UTC, an Extra EA300, N13DK, impacted terrain at Cozumel International Airport (MMCZ) in Cozumel, Mexico. The aircraft was destroyed and the pilot, the sole occupant, was fatally injured. This investigation is under the jurisdiction…NTSB CEN15FA282Accident · 1 fatalField investigationFinal reportChristen Industries Pitts S-2B · Cameron, MOThe pilot’s failure to maintain airplane control during a low-level aerobatic flight maneuver.NTSB WPR12LA407Accident · 1 fatalLimited investigationFinal reportMoore Edward R MXS · Borrego Springs, CAThe pilot’s inability to maintain control of the airplane following the loss of aileron and elevator control due to the forward flight control torque tube assembly’s detachment from the forward bearing. Contributing to the accident was the inadequate…NTSB WPR12FA155Accident · 2 fatalField investigationFinal reportExtra Flugzeugbau EA-300 · Salinas, CAA loose portable XM-GPS antenna that migrated to the tail section of the airplane and jammed the elevator bell crank. Contributing to the accident was the pilot’s failure to account for the cockpit portable GPS antenna during preflight or postflight…NTSB CEN10RA579Accident · 1 fatalForeign investigationZivko Aeronautics Edge 540 · Toledo, SpainimportNTSB WPR09LA203Accident · 1 fatalLimited investigationFinal reportExtra EA-300 · Santa Barbara, CAThe pilot's failure to maintain clearance with terrain for undetermined reasons while performing aerobatics.NTSB ERA09LA188Accident · 2 fatalLimited investigationFinal reportMXR Technologies MX2 · Dade City, FLAn in-flight loss of aircraft control for an undetermined reason.NTSB DEN08FA100Accident · 1 fatalField investigationFinal reportExtra Flugzeugbau EA 300/L · Gothenburg, NEThe pilot's failure to maintain aircraft control after encountering instrument meteorological conditions. Contributing to the accident were the pilot's recent usage of Marihuana, his impaired judgement and decision making, and the low visibility weather…NTSB LAX08FA134Accident · 2 fatalField investigationFinal reportExtra Flugzeugproduktions-GMBH EA-300/L · Queen Creek, AZThe loss of aircraft control due to an undetermined rudder malfunction.NTSB NYC07FA007Accident · 1 fatalField investigationFinal reportExtra Flugzeugbau Gmbh 300 · Culpeper, VAThe pilot’s disorientation while performing an aerobatic maneuver, which resulted in the airplane’s inadvertent impact with the ground. Contributing to the accident was the pilot’s overuse of prescription medication.NTSB DEN07FA003Accident · 1 fatalField investigationFinal reportExtra Flugzeugbau EA 300/L · Tucumcari, NMThe pilot's failure to maintain aircraft control during aerobatic flight, resulting in an inadvertent accelerated stall. Contributing factors include the low altitude for recovery from the loop and the high density altitude.NTSB ANC06LA026Accident · 1 fatalLimited investigationFinal reportExtra Flugzeugbau 300S · Greenfield, CAThe pilot's failure to maintain adequate airspeed during the base leg to final approach phase of a VFR landing pattern, which resulted in an inadvertent stall and an uncontrolled descent. A factor contributing to the accident was the inadvertent stall/mush.NTSB DFW05FA242Accident · 1 fatalField investigationFinal reportAkro Tech Aviation Inc. Giles G-300 · Yukon, OKThe catastrophic separation of the canopy as result of the failure of the forward canopy hinge while performing aerobatics and the subsequent incapacitation of the pilot.NTSB FTW04FA054Accident · 2 fatalField investigationFinal reportPiper PA-32R-301 · Beaumont, TXThe flight instructor's failure to maintain clearance with a static line. Contributing factors were the low cloud ceiling weather conditions and night light conditions.NTSB NYC04LA006Accident · 1 fatalLimited investigationFinal reportExtra Flugzeugbau EA-300L · Queen Anne, MDThe pilot's performance of aerobatic maneuvers with positive and negative Gs, which resulted in a G induced loss of control, and uncontrolled impact with the ground.NTSB CHI04LA007Accident · 1 fatalLimited investigationFinal reportAviat Pitts S-2B · Cromwell, MNThe altitude/clearance not maintained by the pilot while performing aerobatic maneuvers. Contributing factors were the planning/decision to perform an aerobatic maneuver at a low altitude.NTSB NYC04LA004Accident · 1 fatalLimited investigationFinal reportPfeifler Edge-540 · Warrenton, VAThe pilot's failure to maintain aircraft control while performing aerobatic maneuvers.NTSB DEN03FA074Accident · 2 fatalField investigationFinal reportChristen Industries Pitts S-2B · Longmont, COthe pilot's improper in-flight planning and decision that resulted in fuel exhaustion and his entering an aerobatic maneuver with insufficient altitude. Factors contributing to the accident were the low airspeed and low altitude, and the fuel exhaustion.NTSB NYC03FA088Accident · 2 fatalField investigationFinal reportAviat Pitts S-2B · Newport, PAThe pilot's improper decision to perform aerobatics at a low altitude, which inhibited his ability to recover from an encountered flat spin. A factor related to the accident was the aft center of gravity, which was beyond the operational limit for the…NTSB MIA03FA050Accident · 2 fatalField investigationFinal reportExtra Flugzeugbau EA300/L · Golden Gate, FLThe airplane's entry into a near vertical descent for undetermined reasons, which resulted in a collision with terrain during the resultant descent.NTSB LAX02FA003Accident · 1 fatalField investigationFinal reportEdge 540 · San Juan Capist, CAthe pilot's failure to maintain an adequate terrain/object altitude clearance while intentionally performing low level aerobatics, which resulted in a loss of aircraft control.NTSB NYC01FA212Accident · 1 fatalField investigationFinal reportPitts S-2B · Shirley, NYThe pilot under instruction's failure to maintain adequate airspeed, and the flight instructor's inadequate remedial action during a simulated engine-out approach, which resulted in an inadvertent stall, and subsequent ground impact.NTSB MIA01FA041Accident · 2 fatalField investigationFinal reportChristen Industries Pitts S-2B · Weston, FLAn inflight loss of control by both pilots while maneuvering, which resulted in an inverted flat spin, an uncontrolled descent, and an impact with terrain/water. A factor contributing to the accident was the failure of both pilots to ensure that the…NTSB ATL96LA025Accident · 1 fatalLimited investigationFinal reportMoravan Zlin Z50 LA · Springfield, TNthe pilot's failure to maintain control of the aircraft.NTSB FTW95LA384Accident · 1 fatalLimited investigationFinal reportJohnson Rebel 300 · Keenesburg, COInadvertent stall during approach. A factor was the pilot's lack of total experience in make and model.NTSB SEA91FA203Accident · 1 fatalField investigationFinal reportChristen Industries Pitts S-2B · Scappoose, ORThe pilot's misjudgment of altitude, while performing an aerobatic maneuver, and his failure to maintain ground clearance.NTSB CHI90DEV07Accident · 2 fatalFinal reportPitts S2B · Springfield, ILThe pilot's failure to maintain flying speed and allowed the aircraft to stall during the break turn to downwind.NTSB FTW86FA027Accident · 2 fatalField investigationFinal reportCessna 172B · Caddo Mills, TXMid-air occurred at uncontrolled arpt with the S-2B executing rt traffic, as published, and the C-172 executing a long final or an arcing lft turn to final. Both acft were attempting to land on rwy 17R. Acdt occurred during late afternoon and there was…