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Sonex Accident Database
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RegistrationDateLocationInjuriesProbable CausePilot ErrorBuild/Maint ErrorLOC Stall/
Spin		Loss of PowerUnexplained Loss of PowerPilot Error No Loss of PowerFuel StarvePowerlantAdditional Notes
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N202BA07/29/2000GREENVILLE, SCNonfatalThe pilot's misjudgment of airspeed and altitude resulting in an undershoot.XXVW
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N164JL09/08/2002OXNARD, CANonfatalthe loosening of the tapered spacer, which resulted in the propeller hub separating from the crankshaft. A factor in the accident was the unsuitable terrain for landing.XGreat Plains
Total Accidents
47
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N478SX11/21/2004Oconomowoc, WINonfatalThe loss of engine power due to a fatigue fracture of the crankshaft. An additional cause to the accident was the pilot/builder's failure to verify the dimensions of the shrink-fit crankshaft components prior reassembling the engine. A factor to the accident was the ditch encountered during the forced landingXXAeroveeLoss of Control, Stall/Spin1429.8%
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N514KP02/27/2006Rockford, ILNonfatalThe loss of engine power due to the restricted movement of the throttle cable during cruise flight. A factor in the accident was the trees contacted during the forced landing.XXAeroveeLoss of Power3472.3%
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N229P02/10/2007Atlanta, TXNonfatalThe pilot's failure to maintain an adequate airspeed that resulted in a stall/mush. A contributing factor was the group of trees located near the departure end of the runway.XXXJabiru 2200Undetermined Loss of Power1225.5%
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N600WW02/26/2007Phoenix, AZNonfatalThe pilot's failure to maintain directional control during the landing roll. The fact that the pilot had only two hours total time in this make and model aircraft was a factor in the accident.XXAeroveeTotal Fatal1429.8%
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N557SX08/15/2007Bonham, TXFatal(1)The pilot's failure to maintain control of the airplane on take off, which resulted in an inadvertent stall and subsequent collision with terrain.XXXJabiru 3300Reduction in power heard by witnessFuel Exhaustion510.6%
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N130SX12/06/2007New Smyrna Beac, FLNonfatalThe pilot's failure to maintain altitude/clearance while on final approach for landing.XXPilot Error2451.1%
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N365SX12/28/2007Murrieta, CANonfatalThe loss of engine power due to fuel exhaustion. Contributing to the accident was the lack of suitable terrain for the forced landing.XXXJabiruPilot Error without Loss of Power1123.4%
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N35YX2/8/2008New Smyrna Beach, FLNonfatalThe pilot's failure to maintain directional control during the takeoff. Contributing was the crosswind.XXJabiru 3300Build/Maintenance Error1021.3%
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N184L06/07/2008Metropolis, ILNonfatalThe loss of engine power for undetermined reasons and the low altitude at the time of engine power loss while turning. An additional cause was the proper touchdown point not attained by the pilot, A contributing factor was the runway lights.XXXAerovee
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N555SX02/06/2009Crossville, TNNonfatalA total loss of engine power during initial climb due to the failure of the ignition power supply as a result of the improper installation of the electronic control unit.XXUL 260i
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N997KK03/18/2009Cottonwood, AZNonfatalThe loss of engine power for undetermined reasons.XXAerovee
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N1006N03/25/2009Paso Robles, CANonfatalA total loss of engine power during cruise flight due to the pilot/builder’s failure to follow the engine manufacturer’s maintenance instructions and apply the correct torque to the rocker arm nuts during maintenance.XXAerovee
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N692RM04/25/2009Louisville, OHFatal(1)The pilot's failure to assure an adequate fuel level which resulted in fuel exhaustion. Contributing to the accident were the gusty winds and the pilot's loss of aircraft control during the forced landing.XXXXAerovee
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N604X06/24/2009Mena, ARNonfatalThe total loss of engine power for undetermined reasons.XXJabiru 3300
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N10DA11/14/2009Burnet, TXFatal(1)The pilot’s failure to maintain aircraft control, resulting in an aerodynamic stall. Contributing to the accident was the loss of engine power due to a clogged fuel screen that resulted in fuel starvation caused by the builder's inappropriate use of a fuel tank sealant in a plastic tank.XXXXJabiru 3300Clogged Screen from sealant used in fuel tank
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N363SX06/27/2010Punta Gorda, FLNonfatalThe pilot's improper flare, resulting in a hard landing.XXGreat Plains
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N234KS10/29/2010San Angelo, TXNonfatalThe pilot's loss of airplane control. Contributing to the accident was the pilot's impairment due to alcohol.XX92hp?
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N469SA11/29/2010Buffalo, NYNonfatalThe pilot's failure to maintain directional control during takeoff due to his abrupt advancing of the throttle.XX?
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N56306/18/2011Gardner, KSNonfatalThe pilot's failure to maintain a proper glide path during the visual approach.XXVW?
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N6PX07/02/2011Calhoun, GAFatal(1)The total loss of engine power for reasons that could not be determined because post impact fire damage precluded a thorough examination of the engine.XXXJabiru 3300Normal runup, noticeable loss of power on takeoff roll followed by regaining full power by witness
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N18YX07/07/2011Sterling, AKNonfatalThe pilot's failure to maintain sufficient airspeed to avoid an aerodynamic stall following a loss of engine power for undetermined reasons.XXXXAerovee Engine restarted just before impact
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N100VY09/02/2011Marion, ILNonfatalThe partial loss of engine power during initial climb for undetermined reasons.XXJabiru 3300Loss of power just after liftoff. Produced full power in post accident run. Carb ice noted as a possibility but not conclusive.
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N7565410/22/2011Washington, GAFatal(1)The in-flight failure of the aircraft’s Y-tail attachment structure during maneuvering flight due to overload. Contributing to the accident was, the kit manufacturer’s use of 14 CFR Part 23, Appendix A design guidelines intended for a conventional tail airplane without a V- (or Y-) tail. Other notes from report: "It is likely that the pilot, distracted by the loss of engine power, allowed the airplane to enter an unusual attitude, and the tail separated during the pilot’s attempted recovery from the unusual attitude." and "The aircraft fuel tank contained less than one ounce of fuel and was not breached. There was no odor of fuel observed at the main wreckage site. There was no evidence of spilled fuel under the wreckage."XXXXAeroveeY-tail structural failure/overload. Less than optimal construction techniques
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N484PC09/06/2012Chapmansboro, TNNonfatalThe pilot’s failure to maintain directional control during the takeoff initial climb.XXJabiru 3300
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N198PC10/16/2012Crossville, TNNonfatalThe pilot’s failure to maintain control of the airplane, which resulted in a low-altitude aerodynamic stall/spin. Contributing to the accident was a loss of engine power for reasons that could not be determined during postaccident examination and the pilot’s decision to depart with a known deficiency. Contributing to the pilot’s injuries was his failure to use the installed restraint system.XXXXAerovee
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N634SX05/26/2013Naples, FLNonfatalThe pilot’s failure to maintain airspeed during a forced landing, which resulted in an aerodynamic stall. Contributing to the accident was a partial loss of the noncertificated engine’s power for reasons that could not be determined because examination of the engine did not reveal any mechanical malfunctions or failures that would have precluded normal operation.XXXXAerovee
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N293SX09/06/2013Waxhaw, NCNonfatalThe pilot/owner/builder’s improper routing of the engine’s crankshaft position sensor cable next to the engine’s exhaust system, which resulted in a total loss of engine power in flight.XXJabiru 3300
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N68VF10/16/2013Palatine, NYNonfatalA total loss of engine power for reasons that could not be determined because a test run and partial teardown of the engine did not reveal any anomalies.XXGreat Plains
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N732SX02/17/2014Wellington, FLFatal(1)The pilot's failure to maintain adequate airspeed following a partial loss of engine power during initial climb, which led to the airplane exceeding its critical angle of attack and experiencing an aerodynamic stall. Contributing to the accident was the pilot's improper repair of a stripped spark plug hole, which led to a partial loss of engine power during initial climb.XXXXAerovee
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N229P04/05/2014Dunnellon, FLFatal(1)The in-flight collision with a tree in a heavily wooded area during controlled flight while the pilot was attempting a forced landing for reasons that could not be determined based on the available evidence. Contributing to the delay in locating the wreckage were the nonactivation of the emergency locator transmitter and delayed coordination between the Civil Air Patrol and multiple local and state agencies.XXJabiru 2200
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N461MM10/03/2014Palm Coast, FlFatal(1)A total loss of engine power during cruise flight for reasons that could not be determined due to the postaccident condition of the engine and its associated fuel and ignition systems.XXXAerovee
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N9192210/20/2014Fawnskin, CAFatal(1)The pilot's failure to maintain airspeed after takeoff, which resulted in an exceedance of the airplane's critical angle of attack and a subsequent aerodynamic stall/spin at low altitude. Contributing to the accident was the airplane's reduced climb performance due to a carbon-fouled engine cylinder, the airplane's lack of wheel pants and fairings, and the high density altitude conditions.XXXXAeroveeCarbon-Fouled Cylinder
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N244HB10/26/2014Plainview, ILFatal(1)The loss of engine power during cruise flight due to a fatigue fracture of the crankshaft, which resulted in a forced landing on unsuitable terrain.XGreat PlainsCrankshaft Fatigue Crack
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N123SX06/02/2015Oshkosh, WIFatal(2)The pilot's failure to maintain sufficient airspeed following a loss of engine power during initial takeoff climb, which resulted in the airplane's wing exceeding its critical angle-of-attack and a subsequent aerodynamic stall. The reason for the loss of engine power could not be determined because examination of the wreckage revealed no mechanical deficiencies. Contributing to the accident was the pilot's decision to conduct an intersection takeoff.XXXXAerovee Turbo
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N683DB08/15/2015Wolcottville, INNonfatalThe pilot's improper fuel planning, which resulted in fuel exhaustion, a forced off-airport landing, and nose over.XXXJabiru 3300
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N7035Z11/15/2015Morganton, NCNonfatalThe pilot/owner’s inadequate maintenance inspection following a propeller strike, which resulted in the subsequent in-flight propeller separation due to propagation of fatigue cracks in the crankshaft.XXAeroveeCrank Failure due to Prop Strike
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N97GR04/08/2016Jesup, GANonfatalPreliminary Report OnlyXXX
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N393SX07/18/2016Lodi, WINonfatalThe separated rocker arm assembly for undetermined reasons, which resulted in the partial loss of engine power and led to the landing gear collapsing during the subsequent forced landing.XAeroveeRocker arm assembly separated
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N12YX08/03/2016Fond du Lac, WINonfatalFactual Report OnlyXAerovee
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N315AL02/28/0207Methuen, MAFatal(1)Preliminary Report Only
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N801SX03/01/2017Mercey Hot Springs, CANonfatalThe sport pilot's unstabilized approach with a tailwind, which resulted in touchdown short of the runway and a subsequent nose-over.XXJabiru 3300
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N212AG04/22/2017Leesburg, VANonfatalPreliminary Report OnlyXCorvairCarb Ice?
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N255BZ06/03/2017Garfield, WANonfatalPreliminary Report OnlyXPropeller Separated Crankshaft Broken
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N543SX02/05/2018Carrabelle, FLFatal(1)Preliminary Report OnlyXX
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N75SX09/12/2018Marion, SCFatal(1)Preliminary Report Only