# Rotax 503 series

- Type: Engine model (FAA registry)
- Registry code: 55564
- Manufacturer (registry): ROTAX
- Model: 503 SERIES
- Engine type: 2 cycle
- Power: 52 hp
- Installed in: 449 registered aircraft
- Page: https://openairdocs.org/engine/rotax-503-series

The registry names only the engine series, so ADs for every model in the series are matched.

## ADs that may apply (OpenAirDocs)

Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft (449, first 50)

- [N10059](https://openairdocs.org/aircraft/N10059): [Esarey John G](https://openairdocs.org/faa-owner/ESAREY%20JOHN%20G), [Norfolk, VA](https://openairdocs.org/faa-place/VA/Norfolk), built 2009, S/N CH2-0507-LSS-0130
- [N1008J](https://openairdocs.org/aircraft/N1008J): [Mouat Michael](https://openairdocs.org/faa-owner/MOUAT%20MICHAEL), [Hemet, CA](https://openairdocs.org/faa-place/CA/Hemet), built 1997, S/N M-00017
- [N1017K](https://openairdocs.org/aircraft/N1017K): [Napiwoski Thomas](https://openairdocs.org/faa-owner/NAPIWOSKI%20THOMAS), [White Bear Lake, MN](https://openairdocs.org/faa-place/MN/White%20Bear%20Lake), built 2007, S/N CH2-0805-2665
- [N103RW](https://openairdocs.org/aircraft/N103RW): [Fletcher John](https://openairdocs.org/faa-owner/FLETCHER%20JOHN), [Diamondhead, MS](https://openairdocs.org/faa-place/MS/Diamondhead), built 1999, S/N 1194-R0515
- [N10659](https://openairdocs.org/aircraft/N10659): [Boss Daniel R](https://openairdocs.org/faa-owner/BOSS%20DANIEL%20R), [Thornton, IL](https://openairdocs.org/faa-place/IL/Thornton), built 1985, S/N 1007
- [N108ZX](https://openairdocs.org/aircraft/N108ZX): [Bakies Scott](https://openairdocs.org/faa-owner/BAKIES%20SCOTT), [Findlay, OH](https://openairdocs.org/faa-place/OH/Findlay), built 1996, S/N 96-1426-2
- [N114GX](https://openairdocs.org/aircraft/N114GX): [Youngblood Barry N](https://openairdocs.org/faa-owner/YOUNGBLOOD%20BARRY%20N), [Boaz, KY](https://openairdocs.org/faa-place/KY/Boaz), built 2011, S/N CH2-0706-2754
- [N115DE](https://openairdocs.org/aircraft/N115DE): [Tucker Shad E](https://openairdocs.org/faa-owner/TUCKER%20SHAD%20E), [Sandia, TX](https://openairdocs.org/faa-place/TX/Sandia), S/N 001150
- [N116DB](https://openairdocs.org/aircraft/N116DB): [Jardine Brian E](https://openairdocs.org/faa-owner/JARDINE%20BRIAN%20E), [Meridian, ID](https://openairdocs.org/faa-place/ID/Meridian), S/N 514
- [N116MG](https://openairdocs.org/aircraft/N116MG): [Schreiner Albert W III](https://openairdocs.org/faa-owner/SCHREINER%20ALBERT%20W%20III), [Spokane, WA](https://openairdocs.org/faa-place/WA/Spokane), built 2005, S/N CH2-0204-2452
- [N116TF](https://openairdocs.org/aircraft/N116TF): [Smith Carl D](https://openairdocs.org/faa-owner/SMITH%20CARL%20D), [Cleveland, GA](https://openairdocs.org/faa-place/GA/Cleveland), built 1995, S/N 103
- [N117ZX](https://openairdocs.org/aircraft/N117ZX): [D Innocenti Danilo](https://openairdocs.org/faa-owner/D%20INNOCENTI%20DANILO), [Orlando, FL](https://openairdocs.org/faa-place/FL/Orlando), built 2005, S/N 167
- [N122FM](https://openairdocs.org/aircraft/N122FM): [Murdock Frank H](https://openairdocs.org/faa-owner/MURDOCK%20FRANK%20H), [Jackson, GA](https://openairdocs.org/faa-place/GA/Jackson), built 2006, S/N CH2-0995-B-1388
- [N124AR](https://openairdocs.org/aircraft/N124AR): [Howland Alan Ross](https://openairdocs.org/faa-owner/HOWLAND%20ALAN%20ROSS), [Zachary, LA](https://openairdocs.org/faa-place/LA/Zachary), built 2001, S/N 1B0058
- [N125J](https://openairdocs.org/aircraft/N125J): [Vaughn David A](https://openairdocs.org/faa-owner/VAUGHN%20DAVID%20A), [Cardwell, MO](https://openairdocs.org/faa-place/MO/Cardwell), built 2007, S/N CH2-0705-2649
- [N126AS](https://openairdocs.org/aircraft/N126AS): [Stone Alexander M Jr](https://openairdocs.org/faa-owner/STONE%20ALEXANDER%20M%20JR), [Marietta, SC](https://openairdocs.org/faa-place/SC/Marietta), built 1994, S/N 861AMS
- [N1281A](https://openairdocs.org/aircraft/N1281A): [Albert Lea Airport Inc](https://openairdocs.org/faa-owner/ALBERT%20LEA%20AIRPORT%20INC), [Albert Lea, MN](https://openairdocs.org/faa-place/MN/Albert%20Lea), built 2007, S/N AEL 1
- [N1283W](https://openairdocs.org/aircraft/N1283W): [Paxair LLC](https://openairdocs.org/faa-owner/PAXAIR%20LLC), [Minneapolis, MN](https://openairdocs.org/faa-place/MN/Minneapolis), S/N CH205951338
- [N1287F](https://openairdocs.org/aircraft/N1287F): [Downs Dennis A](https://openairdocs.org/faa-owner/DOWNS%20DENNIS%20A), [Grand Bay, AL](https://openairdocs.org/faa-place/AL/Grand%20Bay), S/N 000659
- [N129R](https://openairdocs.org/aircraft/N129R): [Cook Phillip C](https://openairdocs.org/faa-owner/COOK%20PHILLIP%20C), [Homerville, GA](https://openairdocs.org/faa-place/GA/Homerville), built 2020, S/N CH2-0107-LSS-0122
- [N12QC](https://openairdocs.org/aircraft/N12QC): [Toothaker James W](https://openairdocs.org/faa-owner/TOOTHAKER%20JAMES%20W), [Cedar Rapids, IA](https://openairdocs.org/faa-place/IA/Cedar%20Rapids), built 2006, S/N DG-001-LS
- [N12XA](https://openairdocs.org/aircraft/N12XA): [Weber John H](https://openairdocs.org/faa-owner/WEBER%20JOHN%20H), [Leesburg, FL](https://openairdocs.org/faa-place/FL/Leesburg), built 1988, S/N 297
- [N1302A](https://openairdocs.org/aircraft/N1302A): [Gickos James](https://openairdocs.org/faa-owner/GICKOS%20JAMES), [Plymouth, NH](https://openairdocs.org/faa-place/NH/Plymouth), built 2014, S/N LAB02
- [N135JG](https://openairdocs.org/aircraft/N135JG): [N135jg LLC](https://openairdocs.org/faa-owner/N135JG%20LLC), [Albuquerque, NM](https://openairdocs.org/faa-place/NM/Albuquerque), S/N CH2-1199-1920
- [N136RB](https://openairdocs.org/aircraft/N136RB): [Roach David C](https://openairdocs.org/faa-owner/ROACH%20DAVID%20C), [Brookneal, VA](https://openairdocs.org/faa-place/VA/Brookneal), built 1999, S/N FS-00-1-00020
- [N138NA](https://openairdocs.org/aircraft/N138NA): [Bossert Gerald R](https://openairdocs.org/faa-owner/BOSSERT%20GERALD%20R), [Gulf Breeze, FL](https://openairdocs.org/faa-place/FL/Gulf%20Breeze), built 2000, S/N CH2-0698-1760
- [N139ST](https://openairdocs.org/aircraft/N139ST): [Heizer John Jr](https://openairdocs.org/faa-owner/HEIZER%20JOHN%20JR), [Lovelock, NV](https://openairdocs.org/faa-place/NV/Lovelock), built 1999, S/N 099
- [N140MR](https://openairdocs.org/aircraft/N140MR): [Vandeberg Vern](https://openairdocs.org/faa-owner/VANDEBERG%20VERN), [Osseo, WI](https://openairdocs.org/faa-place/WI/Osseo), S/N CH2 1209 LSS 0165
- [N142AB](https://openairdocs.org/aircraft/N142AB): [Gibson Paul](https://openairdocs.org/faa-owner/GIBSON%20PAUL), [Jasonville, IN](https://openairdocs.org/faa-place/IN/Jasonville), built 1999, S/N 7579
- [N143JC](https://openairdocs.org/aircraft/N143JC): [Carcador Jose](https://openairdocs.org/faa-owner/CARCADOR%20JOSE), [Bayamon, PR](https://openairdocs.org/faa-place/PR/Bayamon), built 2008, S/N JC001
- [N144XP](https://openairdocs.org/aircraft/N144XP): [Leveque Warren S](https://openairdocs.org/faa-owner/LEVEQUE%20WARREN%20S), [Pulaski, TN](https://openairdocs.org/faa-place/TN/Pulaski), built 2014, S/N 00144
- [N148SE](https://openairdocs.org/aircraft/N148SE): [Kipp Reif B](https://openairdocs.org/faa-owner/KIPP%20REIF%20B), [Mesquite, NV](https://openairdocs.org/faa-place/NV/Mesquite), S/N 010
- [N14CU](https://openairdocs.org/aircraft/N14CU): [Chapman Kirk S](https://openairdocs.org/faa-owner/CHAPMAN%20KIRK%20S), [Columbia, SC](https://openairdocs.org/faa-place/SC/Columbia), built 1985, S/N 5031986LC
- [N150ED](https://openairdocs.org/aircraft/N150ED): [Can Do Moq LLC](https://openairdocs.org/faa-owner/CAN%20DO%20MOQ%20LLC), [Balch Springs, TX](https://openairdocs.org/faa-place/TX/Balch%20Springs), built 2006, S/N CH2 0391 CW0654
- [N1532W](https://openairdocs.org/aircraft/N1532W): [Smith Steven B](https://openairdocs.org/faa-owner/SMITH%20STEVEN%20B), [Spring Valley, CA](https://openairdocs.org/faa-place/CA/Spring%20Valley), built 1991, S/N 602
- [N155KL](https://openairdocs.org/aircraft/N155KL): [Murray Mark J](https://openairdocs.org/faa-owner/MURRAY%20MARK%20J), [Georgetown, GA](https://openairdocs.org/faa-place/GA/Georgetown), built 2000, S/N CH2-0500-1977
- [N155SE](https://openairdocs.org/aircraft/N155SE): [Fuellner Sean L](https://openairdocs.org/faa-owner/FUELLNER%20SEAN%20L), [Shelocta, PA](https://openairdocs.org/faa-place/PA/Shelocta), built 1995, S/N 1295-B-0597
- [N157JD](https://openairdocs.org/aircraft/N157JD): [Soderholm Jay R](https://openairdocs.org/faa-owner/SODERHOLM%20JAY%20R), [Sheyenne, ND](https://openairdocs.org/faa-place/ND/Sheyenne), S/N CH2-0503-2323
- [N159ZX](https://openairdocs.org/aircraft/N159ZX): [Heatherly Charles](https://openairdocs.org/faa-owner/HEATHERLY%20CHARLES), [Elizabethtown, NC](https://openairdocs.org/faa-place/NC/Elizabethtown), S/N 4169565M
- [N15GY](https://openairdocs.org/aircraft/N15GY): [Richey Kevin B](https://openairdocs.org/faa-owner/RICHEY%20KEVIN%20B), [Portland, OR](https://openairdocs.org/faa-place/OR/Portland), built 2009, S/N R111
- [N1624Z](https://openairdocs.org/aircraft/N1624Z): [Chapman Bradley A](https://openairdocs.org/faa-owner/CHAPMAN%20BRADLEY%20A), [Charleston, SC](https://openairdocs.org/faa-place/SC/Charleston), S/N 1764
- [N1652L](https://openairdocs.org/aircraft/N1652L): [Weber Robert](https://openairdocs.org/faa-owner/WEBER%20ROBERT), [Cheney, WA](https://openairdocs.org/faa-place/WA/Cheney), built 2002, S/N CH201001937
- [N1662L](https://openairdocs.org/aircraft/N1662L): [Woodriff R Lee](https://openairdocs.org/faa-owner/WOODRIFF%20R%20LEE), [O Brien, FL](https://openairdocs.org/faa-place/FL/O%20Brien), built 2007, S/N 3830
- [N167PN](https://openairdocs.org/aircraft/N167PN): [Steinke Jeffrey L](https://openairdocs.org/faa-owner/STEINKE%20JEFFREY%20L), [Hamlet, NE](https://openairdocs.org/faa-place/NE/Hamlet), built 2010, S/N CH2-0610-W-2879
- [N168FL](https://openairdocs.org/aircraft/N168FL): [Sterner Robert T](https://openairdocs.org/faa-owner/STERNER%20ROBERT%20T), [Fort Walton Beach, FL](https://openairdocs.org/faa-place/FL/Fort%20Walton%20Beach), built 1997, S/N 1001
- [N16SL](https://openairdocs.org/aircraft/N16SL): [Williams Phillip](https://openairdocs.org/faa-owner/WILLIAMS%20PHILLIP), [Birmingham, AL](https://openairdocs.org/faa-place/AL/Birmingham), built 2021, S/N CH2-0292-B-0818
- [N1717P](https://openairdocs.org/aircraft/N1717P): [Engleking Faron W](https://openairdocs.org/faa-owner/ENGLEKING%20FARON%20W), [Seymour, IN](https://openairdocs.org/faa-place/IN/Seymour), S/N A56FWE
- [N1731C](https://openairdocs.org/aircraft/N1731C): [Eickholt Alex C](https://openairdocs.org/faa-owner/EICKHOLT%20ALEX%20C), [Ottoville, OH](https://openairdocs.org/faa-place/OH/Ottoville), built 2010, S/N CH2-0103-2293
- [N1754C](https://openairdocs.org/aircraft/N1754C): [Carvalho Nelson H](https://openairdocs.org/faa-owner/CARVALHO%20NELSON%20H), [Sevierville, TN](https://openairdocs.org/faa-place/TN/Sevierville), built 2002, S/N CH2-0902-B-2258
- [N178PJ](https://openairdocs.org/aircraft/N178PJ): [Desrosiers Randy G](https://openairdocs.org/faa-owner/DESROSIERS%20RANDY%20G), [Waterford, MI](https://openairdocs.org/faa-place/MI/Waterford), built 1983, S/N PH00178

All 449: https://openairdocs.org/engine/rotax-503-series/aircraft.md

## NTSB investigations (51, newest 50)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CEN25LA379](https://openairdocs.org/ntsb/CEN25LA379), Sep 13, 2025: Pegasus Quantum 15 (N36TJ), Bedford, IN, substantial damage, investigation ongoing
- [NTSB CEN25LA229](https://openairdocs.org/ntsb/CEN25LA229), Jul 1, 2025: Rans S-14 (N981CS), Guthrie, OK, substantial damage, 1 fatal, investigation ongoing
- [NTSB CEN25LA172](https://openairdocs.org/ntsb/CEN25LA172), May 5, 2025: Golden Circle Air T-Bird (N7192M), Dallas Center, IA, substantial damage. Probable cause: The pilot’s failure to maintain adequate roll control of the light sport airplane while on final approach to the airstrip with a crosswind.
- [NTSB ERA25LA197](https://openairdocs.org/ntsb/ERA25LA197), May 4, 2025: Arlie L Raber III Challenger 1 (N59BR), Crestview, FL, substantial damage. Probable cause: The pilot’s decision to take off despite having problems controlling the airplane due to his physical stature.
- [NTSB ERA25LA097](https://openairdocs.org/ntsb/ERA25LA097), Jan 14, 2025: Jonathan C Eggers Challenger II (N938SE), Conway, SC, substantial damage. Probable cause: The pilot's inadequate fuel planning, which resulted in a total total loss of engine power due to fuel exhaustion.
- [NTSB CEN25LA009](https://openairdocs.org/ntsb/CEN25LA009), Oct 8, 2024: Quicksilver GT 400 (N2490H), Garden Ridge, TX, substantial damage. Probable cause: A loss of engine power that resulted from improper fuel system maintenance and the subsequent fuel starvation due to the leaking fuel pump outlet fuel line.
- [NTSB CEN24LA281](https://openairdocs.org/ntsb/CEN24LA281), Jul 20, 2024: Quicksilver GT-400 (N919PS), Mansfield, MO, substantial damage. Probable cause: The pilot’s failure to maintain control after takeoff, which resulted in an aerodynamic stall.
- [NTSB CEN23LA422](https://openairdocs.org/ntsb/CEN23LA422), Sep 26, 2023: Quicksilver Sport II (N728NN), Welsh, LA, substantial damage. Probable cause: The pilot’s failure to maintain sufficient altitude from obstacles during the simulated landing approach which led to a collision with a fence and a building.
- [NTSB ERA23LA329](https://openairdocs.org/ntsb/ERA23LA329), Aug 9, 2023: Eipper Formance Mxii (N1624Z), Holy Hill, SC, substantial damage. Probable cause: The pilot’s exceedance of the critical angle of attack during the initial climb, which resulted in an aerodynamic stall at low altitude and a collision with a hangar. Contributing to the accident was…
- [NTSB ERA23LA026](https://openairdocs.org/ntsb/ERA23LA026), Oct 16, 2022: Kolb Firestar II (N4878P), West Alexandria, OH, substantial damage. Probable cause: The pilot’s failure to maintain airplane control after takeoff, resulting in an aerodynamic stall and collision with terrain.
- [NTSB ERA21LA347](https://openairdocs.org/ntsb/ERA21LA347), Sep 1, 2021: Quad City Challenger (N1225G), Geneva, AL, substantial damage. Probable cause: A total loss of engine power for reasons that could not be determined.
- [NTSB WPR20CA056](https://openairdocs.org/ntsb/WPR20CA056), Dec 22, 2019: Cosmos Phase II (N5057Z), Lake Havasu City, AZ, substantial damage. Probable cause: The total loss of engine power due to fuel exhaustion, which resulted from the pilot's inadequate preflight fuel inspection.
- [NTSB WPR19LA192](https://openairdocs.org/ntsb/WPR19LA192), Jul 19, 2019: Judd Challenger II (N77YD), Draper, UT, substantial damage. Probable cause: The total loss of engine power for reasons that could not be determined based on available evidence.
- [NTSB ERA18LA188](https://openairdocs.org/ntsb/ERA18LA188), Jul 9, 2018: Northwing 17 (N959RR), Section, AL, substantial damage, 1 fatal. Probable cause: The noncertificated pilot's failure to maintain control of the weight-shift-control aircraft during an aborted landing. Contributing to the accident was the pilot's lack of flight experience in the…
- [NTSB WPR18LA142](https://openairdocs.org/ntsb/WPR18LA142), May 11, 2018: Kolb Firestar (N9216E), Atmore, AL, substantial damage. Probable cause: The noncertificated pilot's failure to maintain airplane control, which resulted in an aerodynamic stall. Contributing to the accident was the pilot's lack of flight experience and qualification.
- [NTSB GAA18CA411](https://openairdocs.org/ntsb/GAA18CA411), Apr 21, 2018: Eipper Quicksilver (N126AS), Marietta, SC, substantial damage. Probable cause: The pilot's improper landing flare, which resulted in a loss of directional control.
- [NTSB GAA18CA054](https://openairdocs.org/ntsb/GAA18CA054), Nov 19, 2017: Quicksilver MXL Sport (N7712), Point Mugu, CA, substantial damage. Probable cause: The pilot’s failure to see and avoid power wires.
- [NTSB ANC18LA002](https://openairdocs.org/ntsb/ANC18LA002), Oct 11, 2017: Fleetwood Jack Team Airbike (N7566D), Ocean Springs, MS, substantial damage. Probable cause: An intermittent failure of the power take-off cylinder ignition coil, which resulted in a partial loss of engine power.
- [NTSB GAA17CA553](https://openairdocs.org/ntsb/GAA17CA553), Sep 24, 2017: Aerotrike Safari (N7675K), Bridgeton, NJ, substantial damage. Probable cause: The pilot’s improper landing flare, which resulted in a hard landing while conducting an off-airport precautionary landing after a bird strike.
- [NTSB CEN17LA079](https://openairdocs.org/ntsb/CEN17LA079), Jan 1, 2017: Quicksilver GT-400 R503 (N415HC), New Braunfels, TX, substantial damage. Probable cause: The partial loss of engine power due to a loose spark plug. Contributing to the accident was the pilot's improper preflight inspection of the airplane.
- [NTSB ANC16CA050](https://openairdocs.org/ntsb/ANC16CA050), Aug 3, 2016: Holley Carol L Antares (N8512Q), North Pole, AK, substantial damage. Probable cause: The pilot's failure to maintain directional control of the weight-shift control airplane during the landing in a crosswind condition, which resulted in a runway excursion, a tip over of the wing, and…
- [NTSB ERA15CA229](https://openairdocs.org/ntsb/ERA15CA229), May 22, 2015: Wilson Michael A Challenger II (N8547W), Lebanon, TN, substantial damage. Probable cause: The non-certificated pilot's failure to maintain airspeed during takeoff, which resulted in an aerodynamic stall, uncontrolled descent, and collision with terrain. Contributing to the accident was…
- [NTSB WPR15FA140](https://openairdocs.org/ntsb/WPR15FA140), Apr 3, 2015: Quicksilver Enterprises MXL II (N476VB), Petaluma, CA, destroyed, 1 fatal. Probable cause: The pilot's failure to maintain control of the airplane while maneuvering, which resulted in an uncontrolled descent and structural failure. Contributing to the accident was the pilot's impairment…
- [NTSB WPR14CA347](https://openairdocs.org/ntsb/WPR14CA347), Aug 16, 2014: Eipper Formance Mxii (N1624Z), Salt Lake City, UT, substantial damage. Probable cause: The pilot's failure to maintain clearance from power lines while maneuvering at low altitude.
- [NTSB WPR14CA136](https://openairdocs.org/ntsb/WPR14CA136), Mar 13, 2014: Norman Quad City Challenger (N345MN), Monroe, WA, substantial damage. Probable cause: The pilot's inadequate construction of the propeller bracket, which resulted in its failure during the initial climb and the propeller subsequently departing the airplane.
- [NTSB WPR14CA017](https://openairdocs.org/ntsb/WPR14CA017), Oct 14, 2013: Beller Quicksilver Mxlii (N75556), Orland, CA, substantial damage. Probable cause: The pilot's failure to maintain aircraft control during taxi with a strong gusting wind condition which resulted in the airplane nosing over.
- [NTSB CEN13LA555](https://openairdocs.org/ntsb/CEN13LA555), Sep 23, 2013: Buckeye Industries Dream Machine (N6122F), St. Joseph, MI, substantial damage. Probable cause: The pilot's failure to maintain control of the powered-parachute during takeoff.
- [NTSB ERA13CA354](https://openairdocs.org/ntsb/ERA13CA354), Aug 6, 2013: Stetson Norman B Challenger II (N94454), Orange, MA, substantial damage. Probable cause: The pilot’s failure to maintain airspeed during the initial climb after takeoff, which resulted in an aerodynamic stall. Contributing to the accident was the pilot’s lack of total flight experience…
- [NTSB CEN13LA460](https://openairdocs.org/ntsb/CEN13LA460), Aug 3, 2013: Snyder Todd W Titan Tornado 1 (N70786), Wild Rose, WI, substantial damage. Probable cause: The improperly secured spark plug, which resulted in a total loss of engine power.
- [NTSB ERA13LA171](https://openairdocs.org/ntsb/ERA13LA171), Mar 16, 2013: Mcnulty John S Aerolite 103 (N2549W), Immokalee, FL, substantial damage. Probable cause: The loss of engine power due to the seizure of the magneto piston.
- [NTSB WPR13CA092](https://openairdocs.org/ntsb/WPR13CA092), Jan 11, 2013: Heinz Rans S-4 Coyote (N571K), Lake Pleasant, AZ, substantial damage. Probable cause: A partial loss of engine power during cruise flight for reasons that could not be determined because the airplane was not recovered.
- [NTSB WPR12LA441](https://openairdocs.org/ntsb/WPR12LA441), Oct 1, 2012: Team MINI-MAX (N1532W), Chula Vista, CA, substantial damage. Probable cause: A complete loss of engine power as a result of fuel starvation due to an unsecured fuel filter, which moved in flight and kinked the flexible fuel line, severely restricting the fuel flow to the…
- [NTSB ERA12LA537](https://openairdocs.org/ntsb/ERA12LA537), Aug 30, 2012: Quad City Ultralights Challenger II (N2481P), Ocala, FL, substantial damage, 2 fatal. Probable cause: The pilot's inadvertent overstress of the airplane, which resulted in the in-flight separation of the outer section of the right wing.
- [NTSB ERA12FA387](https://openairdocs.org/ntsb/ERA12FA387), Jun 9, 2012: Phillips William L Challenger (N2571T), Plant City, FL, substantial damage, 1 fatal. Probable cause: The non-certificated pilot’s loss of control during approach and landing. Contributing to the accident was the pilot’s lack of both total and recent flight experience.
- [NTSB CEN11LA656](https://openairdocs.org/ntsb/CEN11LA656), Sep 10, 2011: Quicksilver GT400 (N2590A), Bolingbrook, IL, substantial damage. Probable cause: The loss of engine power for reasons that could not be determined during postaccident examination of the engine or airframe.
- [NTSB ERA11LA263](https://openairdocs.org/ntsb/ERA11LA263), Apr 23, 2011: Solo Wings Windlass Aquilla (N94370), Starke, FL, substantial damage, 1 fatal. Probable cause: The pilot's loss of airplane control while taxiing, which resulted in the weight-shift-controlled airplane becoming inadvertently airborne and subsequently impacting the ground. Contributing to the…
- [NTSB WPR11LA104](https://openairdocs.org/ntsb/WPR11LA104), Jan 22, 2011: Bice Air Creation GTE (N4668L), Hayfork, CA, substantial damage. Probable cause: The total loss of engine power during cruise flight, while operating in carburetor icing conditions.
- [NTSB WPR10LA292](https://openairdocs.org/ntsb/WPR10LA292), Jun 14, 2010: Air Creation GTE (N227EH), Springville, UT, substantial damage, 1 fatal. Probable cause: The pilot's inadequate preflight planning and his failure to maintain clearance from obstacles during takeoff. Contributing to the accident was the pilot's lack of experience.
- [NTSB CEN10LA074](https://openairdocs.org/ntsb/CEN10LA074), Dec 13, 2009: Gibson Mark Manta 503 (N193AW), Magnolia, TX, substantial damage. Probable cause: The pilot's failure to maintain clearance from a static wire while maneuvering and his improper decision to fly with a low overcast sky.
- [NTSB WPR09LA453](https://openairdocs.org/ntsb/WPR09LA453), Sep 16, 2009: Quad City Challenger II (N732LS), Redlands, CA, substantial damage, 2 fatal. Probable cause: Structural failure of the right wing during the landing approach due to the separation of the wing's fabric covering.
- [NTSB ERA09LA492](https://openairdocs.org/ntsb/ERA09LA492), Aug 30, 2009: Bond Neal O S-9 (N463NB), Saylorsburg, PA, substantial damage, 1 fatal. Probable cause: The pilot’s excessive flight control inputs that resulted in an overload failure of the right elevator and horizontal stabilizer.
- [NTSB ERA09LA451](https://openairdocs.org/ntsb/ERA09LA451), Aug 8, 2009: Engle David TWO Place (N9259F), Manlius, NY, substantial damage. Probable cause: The pilot's failure to maintain adequate airspeed during climbout, resulting in an aerodynamic stall.
- [NTSB CEN09CA504](https://openairdocs.org/ntsb/CEN09CA504), Aug 5, 2009: Vanderhoof Steve AIR Comman (N8099P), Mentone, IN, substantial damage. Probable cause: The pilot's failure to maintain aircraft control during the landing and subsequent impact with a parked aircraft.
- [NTSB ERA09LA383](https://openairdocs.org/ntsb/ERA09LA383), Jul 7, 2009: Rans S5 Coyote (N284AH), Greeneville, TN, substantial damage. Probable cause: The pilot's failure to maintain airspeed during a forced landing. Contributing to the accident was the loss of engine power due to fuel starvation resulting from the pilot's inadequate preflight…
- [NTSB WPR09LA130](https://openairdocs.org/ntsb/WPR09LA130), Feb 27, 2009: Toland S/Thornburgh J Twin 503SL (N426MT), Torrance, CA, substantial damage, 1 fatal. Probable cause: The passenger’s inadvertent activation of the engine throttle.
- [NTSB ERA09LA013](https://openairdocs.org/ntsb/ERA09LA013), Oct 12, 2008: Sabre Tukan (N75604), Mohawk, TN, substantial damage, 1 fatal. Probable cause: The pilot's loss of control in flight due to a lack of flight experience or instruction. Contributing to the accident was the pilot's impairment due to the recent use of marijuana and a prescription…
- [NTSB ANC09FA003](https://openairdocs.org/ntsb/ANC09FA003), Oct 3, 2008: Antonovich Anton B Challenger II (N7511J), Chugiak, AK, substantial damage, 1 fatal. Probable cause: The pilot’s failure to maintain control of the airplane while maneuvering, resulting in an in-flight collision with trees. Contributing to the accident was the pilot's lack of experience.
- [NTSB LAX08LA181](https://openairdocs.org/ntsb/LAX08LA181), Jun 14, 2008: Airborne Edge (N9393S), Dunn, NC, substantial damage, 1 fatal. Probable cause: The student pilot's failure to maintain control of the airplane during a go-around.
- [NTSB DEN08LA053](https://openairdocs.org/ntsb/DEN08LA053), Jan 26, 2008: Phillips Flite Bike (N31559), Valley Center, KS, substantial damage. Probable cause: The pilot's failure to maintain airspeed during an emergency descent resulting in an inadvertent stall/mush. Contributing to the accident was the pilot's failure to turn on the fuel tank valve…
- [NTSB SEA07LA266](https://openairdocs.org/ntsb/SEA07LA266), Sep 19, 2007: St. Claire Ragtop-01 (N3134Q), Perris, CA, substantial damage. Probable cause: The pilot's failure to maintain control of the airplane during an aborted landing. Contributing factors to the accident were the fence and the undetermined brake malfunction.

All 51: https://openairdocs.org/engine/rotax-503-series/ntsb.md

## FAA accident and incident reports (65, newest 50)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 20260508005369I](https://openairdocs.org/incident/20260508005369I), May 8, 2026: Hamilton Richard D Jr RANS S9 (N380RW), Mulberry, FL, Minor damage. Aircraft departed and lost power within 5-6 minutes, pilot landed aircraft in a dried-up swampy area where aircraft flipped over and pilot escaped with no…
- [Accident 20250913020969A](https://openairdocs.org/incident/20250913020969A), Sep 13, 2025: Pegasus QUANTUM 15 (N36TJ), Bedford, IN, Substantial damage. On September 13, 2025, the subject pilot was taxiing from his hangar to runway 24 at the virgin I. Grissom municipal airport (bfr), Bedford, Indiana. An a&pia…
- [Accident 20250630009039A](https://openairdocs.org/incident/20250630009039A), Jun 30, 2025: Rans S-14 (N981CS), Guthrie, OK, Destroyed, 1 fatal. At 2054 local on June 30th an experimental aircraft crashed under unknown circumstances near seward Oklahoma. The aircraft was located approximately 500 feet…
- [Accident 20250504004759A](https://openairdocs.org/incident/20250504004759A), May 4, 2025: T Bird T1 (N7192M), Dallas Center, IA, Substantial damage. During initial approach to land the left wing tip impacted the ground causing the aircraft to cartwheel uncontrollably, coming to rest in a corn field.
- [Incident 20250504004659I](https://openairdocs.org/incident/20250504004659I), May 4, 2025: Arlie L Raber III CHALLENGER 1 (N59BR), Holt, FL, Minor damage. Pilot departed but found the seat too close to instrument panel. Pilot attempted to adjust seat and lost control of aircraft. Aircraft impacted ground in woody…
- [Accident 20250114001029A](https://openairdocs.org/incident/20250114001029A), Jan 14, 2025: Jonathan C Eggers CHALLENGER II (N938SE), Conway, SC, Substantial damage. The aircraft departed and proceeded to the planned destination. Approximately 2.5 hrs. In the flight the fuel was exhausted. An engine failure occurred, and…
- [Incident 20241008022219I](https://openairdocs.org/incident/20241008022219I), Oct 8, 2024: Clapp Daniel W GT 400 (N2490H), Garden Ridge, TX, Substantial damage. Aircraft took off and shortly afterwards engine started to run rough. Pilot attempted to return to the runway. Aircraft failed to make it. Airplane impacted…
- [Incident 20240926012999I](https://openairdocs.org/incident/20240926012999I), Sep 26, 2024: Pipistrel Lsa Srl TAURUS (N436DZ), Eagle, CO, Minor damage. Pipestrel Taurus powered glider landed gear up on runway 25 at Eagle regional airport on 09/26/2024 at 2125ZULU. No injuries sustained by either of two pilots.…
- [Accident 20240720021569A](https://openairdocs.org/incident/20240720021569A), Jul 20, 2024: Quicksilver GT-400 (N919PS), Mansfield, MO, Substantial damage. According to an eye witness, who was also a private pilot, the aircraft took off from runway 25, climbed to approximately 100 feet AGL in what appeared to be a…
- [Accident 20230926010929A](https://openairdocs.org/incident/20230926010929A), Sep 26, 2023: Quicksilver SPORT II (N728NN), Welsh, LA, Substantial damage. Pilot was making approach to his property. He got too close to a fence on the property line and advanced the throttle. Engine did not respond as fast as he…
- [Accident 20230809012229A](https://openairdocs.org/incident/20230809012229A), Aug 9, 2023: Eipper Formance Inc MXII (N1624Z), Holly Hill, SC, Substantial damage. Pilot stated as follows: the original plan for the afternoon was to do a few high speed taxi and get used to the aircraft on the ground. On the first run I…
- [Accident 20210901015209A](https://openairdocs.org/incident/20210901015209A), Sep 1, 2021: Gonzales Mark S CHALLENGER II (N1225G), Geneva, AL, Substantial damage. Pilot retarded throttle while turning from downwind to base. While turning from base to final, power was increased, resulting in engine failure. Several…
- [Incident 20200515020819I](https://openairdocs.org/incident/20200515020819I), May 15, 2020: Sportflight Aviation TALON X/P (N116TF), Cleveland, GA, Minor damage. N116TF began t/o after runup procedures at Mtn Airpark....after breaking ground the engine began to sputter ...the pilot put the aircraft back on the ground…
- [Accident 20191222019889A](https://openairdocs.org/incident/20191222019889A), Dec 22, 2019: Bjornstad Norman L COSMOS PHASE II (N5057Z), Lake Havasu Cit, AZ, Substantial damage. 12/23/2019- After about an hour of flight on 12/22/2019 at around 10:34 am in a cosmos phase 11 weight shifting (ultralight) aircraft the engine "cut out" and…
- [Accident 20190718015299A](https://openairdocs.org/incident/20190718015299A), Jul 18, 2019: Tharon V Judd CHALLENGER II (N77YD), Draper, UT, Substantial damage. Engine sudden stoppage. Pilot guided aircraft to a road without power lines or obstructions. Aligned aircraft on center of road but drifted into tree branch…
- [Incident 20180829012499I](https://openairdocs.org/incident/20180829012499I), Aug 29, 2018: Six Chuter Inc LEGEND P103 (N239SC), Prosser, WA, Minor damage. Pilot was flying low over yakima river when the aircraft made contact with the water. Pilot stated that as soon as the aircraft hit the water it spun around…
- [Accident 20180709009469A](https://openairdocs.org/incident/20180709009469A), Jul 9, 2018: North Wing 17M (N959RR), Section, AL, Substantial damage, 1 fatal. The pilot purchased the aircraft on 05/04/2018. The pilot asked his spouse to watch him taxi across the homebuilt grass strip runway in the back yard. The…
- [Accident 20180511005079A](https://openairdocs.org/incident/20180511005079A), May 11, 2018: Jose A Martinez FIRESTAR 2 (N9216E), Atmore, AL, Destroyed. Non-certificated pilot took off and flew around for approximately 20-30 minutes. Based on video from a gopro camera mounted on aircraft, airman lost control of…
- [Accident 20180421010539A](https://openairdocs.org/incident/20180421010539A), Apr 21, 2018: Quicksilver MXL II (N126AS), Marietta, SC, Substantial damage. On April 21, 2018 at 1200 hrs, [privacy data omitted]operator of aircraft N126AS, Quicksilver model mxlii, along with one passenger, was performing a landing…
- [Incident 20171202022529I](https://openairdocs.org/incident/20171202022529I), Dec 2, 2017: Ramsey B J CHALLENGER I (N237BJ), Garden City, MN, Minor damage. Pilot incorrectly operated light-sport aircraft as ultralight part 103 as purchased from previous owner. Aircraft wheel fell off on takeoff from private farm…
- [Accident 20171119019449A](https://openairdocs.org/incident/20171119019449A), Nov 19, 2017: Quicksilver MXL SPORT (N7712), Camarillo, CA, Substantial damage. Pilot stated he descended and flew over electrical power lines and thought this was the second set. The pilot stated he was looking back at the road and came…
- [Accident 20171011014519A](https://openairdocs.org/incident/20171011014519A), Oct 11, 2017: Fleetwood Jack TEAM AIRBIKE (N7566D), Ocean Springs, MS, Substantial damage. The aircraft performed an emergency landing due to loss of engine power. The aircraft suffered substantial damage. There was only one person onboard the…
- [Accident 20170924019849A](https://openairdocs.org/incident/20170924019849A), Sep 24, 2017: Aerotrike SAFARI (N7675K), Shiloh, NJ, Substantial damage. While on base leg for landing at woodcrest farms airstrip the pilot manuvered to avoid a flock of birds. One large bird impacted a wire which provides both…
- [Accident 20170101000739A](https://openairdocs.org/incident/20170101000739A), Jan 1, 2017: Quicksilver GT-400 R503 (N415HC), New Braunfels, TX, Substantial damage. Approximately 15 minutes after departing kitty hawk flying field (TS67) in schertz, TX, pilot experienced a loss of engine power. Pilot attempted to land his…
- [Accident 20160802012939A](https://openairdocs.org/incident/20160802012939A), Aug 2, 2016: Holley Carol L ANTARES (N8512Q), North Pole, AK, Substantial damage. Military helicopter pilot with 3100 total hours. Student pilot in weight shift control aircraft with only 6 hours flight time in type. Pilot was crosswind…
- [Incident 20150627012279I](https://openairdocs.org/incident/20150627012279I), Jun 27, 2015: Dfs TRIKE (N2614H), Babson Park, FL, Minor damage. Early morning flight over and around crooked lake, babron park, Florida. Pilot had made four water take-off's and landings. Flying downwind in easterly…
- [Incident 20150606007189I](https://openairdocs.org/incident/20150606007189I), Jun 6, 2015: Smith John N CHALLENGER II (N4459A), Beloit, WI, No damage. On June 6, 2015 at 1430 CDT an amateur- built Smith Challenger II aircraft, N4459A, experienced an engine failure and landed in a corn field 3/4 mile north of…
- [Accident 20150522009099A](https://openairdocs.org/incident/20150522009099A), May 22, 2015: Wilson Michael A CHALLENGER II (N8547W), Lebanon, TN, Substantial damage. The non-certificated pilot took off on runway 4 at Lebanon. A video showed the airplane slowly yawing and banking left, as if no right rudder was used after…
- [Accident 20150403006489A](https://openairdocs.org/incident/20150403006489A), Apr 3, 2015: Quicksilver Enterprises Inc MXL II (N476VB), Petaluma, CA, Destroyed, 1 fatal. 4.3.15) FAA wsa ops cntr received notification of ultralight accident near Petaluma (O69): 031256Z; ultralight acc @ 405 browns lane, Petaluma CA; N476VB;…
- [Accident 20140816016939A](https://openairdocs.org/incident/20140816016939A), Aug 16, 2014: Eipper Formance Inc MXII (N1624Z), Delle, UT, Substantial damage. Ultralight struck power lines while circling a coyote. The right wing 's support cables touched the power line causing them to burn through. The right wing…
- [Incident 20140710011149I](https://openairdocs.org/incident/20140710011149I), Jul 10, 2014: Alliant Aviation LLC XLT503 (N3269X), Ludington, MI, Minor damage. On July 10, 2014, at 1950 eastern daylight time, an Alliant Aviation LLC, model XLT503, N3269X, powered parachute aircraft lost engine power while cruising at…
- [Incident 20140322004949I](https://openairdocs.org/incident/20140322004949I), Mar 22, 2014: Anderson Ross A-503 (N7091U), Roswell, TX, Minor damage. On March 22, 2014, at approximately 1520 CDT, a 2003 Anderson Ross bearing registration number N7091U was departing a dirt strip located approximately 10 miles…
- [Accident 20140312001669A](https://openairdocs.org/incident/20140312001669A), Mar 12, 2014: Norman Me CHALLENGER IISPECIAL (N345MN), Monroe, WA, Substantial damage. After liftoff from runway 25 at W16 the pilot heard a clunk and his engine stopped forcing him to land in a field just south of the runway. After exiting the…
- [Accident 20130923017719A](https://openairdocs.org/incident/20130923017719A), Sep 23, 2013: Buckeye Industries DREAM MACHINE (N6122F), St Joseph, MI, Minor damage. On 09/23/2013 at 1845 EST, N6122F, a Buckeye Dream Machine powered chute crashed at a private strip in St Joseph, Michigan. Two souls onboard with passenger…
- [Accident 20130806017009A](https://openairdocs.org/incident/20130806017009A), Aug 6, 2013: Stetson Norman B CHALLENGER II (N94454), Orange, MA, Substantial damage. At approximately 1:00PM eastern daylight time (EDT) N94454, a Challenger II experimental homebuilt, crashed during takeoff at Orange Municipal Airport located…
- [Accident 20130803015249A](https://openairdocs.org/incident/20130803015249A), Aug 3, 2013: Snyder Todd W TITAN TORNADO 1 (N70786), Wild Rose, WI, Destroyed. Pilot failed to correctly insert spark plug and torque after performing preventative maintenance prior to initial test flight. Spark plug fell out on aircraft…
- [Incident 20130622012799I](https://openairdocs.org/incident/20130622012799I), Jun 22, 2013: Perdue Frederick V LW3 (N503AG), Rural Retreat, VA, Minor damage. 06/22/2013 Rural Retreat, VA (mkj): N503AG, a VFR experimental gyrocopter, executed a forced landing in a field behind a residence after losing power. There…
- [Accident 20130316003949A](https://openairdocs.org/incident/20130316003949A), Mar 16, 2013: Mcnulty John S AEROLITE 103 (N2549W), Naples, FL, Destroyed. Upon arriving to the scene of the aircraft accident, it was noted that the aircraft appeared to come down at a steep angle through the trees canopy. All three…
- [Accident 20130110000279A](https://openairdocs.org/incident/20130110000279A), Jan 10, 2013: Eric P Heinz RANS S-4 COYOTE (N571K), Peoria, AZ, Substantial damage. After doing a preflight inspection, pilot departed pleasant valley airport at approx 4:30 pm for a short flight to the north end of lake pleasant . The terrain…
- [Incident 20121101025609I](https://openairdocs.org/incident/20121101025609I), Nov 1, 2012: Hooper Clint CHALLENGER II SPEC (N464FH), Muskogee, OK, Minor damage. On November 1, 2012 around 18:30 CDT, aircraft N464FH, an operating amateur-built aircraft experienced engine failure. The aircraft made an emergency landing…
- [Accident 20120930024249A](https://openairdocs.org/incident/20120930024249A), Sep 30, 2012: Team Inc MINI-MAX 1300-R (N1532W), Chula Vista, CA, Destroyed. N1532W, a mini max special light sport aircraft lost engine power. Pilot initiated off-airport landing in soccer field. Aircraft substantialy damaged; pilot…
- [Accident 20120830019939A](https://openairdocs.org/incident/20120830019939A), Aug 30, 2012: Quad City Ultralights CHALLENGER II (N2481P), Morriston, FL, Destroyed, 2 fatal. A Quad City Ultralights Challenger II, registered to and operated by a private individual, crashed in a field surrounded by trees near ocala, Florida. Visual…
- [Accident 20120609011379A](https://openairdocs.org/incident/20120609011379A), Jun 9, 2012: Phillips William L CHALLENGER II (N2571T), Plant City, FL, Destroyed, 1 fatal. On June 09 2012, at 11:15 EDT , a Challenger II elsa N2571T, registered to william l Phillips collided nose first with the ground at a high angle while trying…
- [Accident 20110910021569A](https://openairdocs.org/incident/20110910021569A), Sep 10, 2011: Benevelli Michael E QUICKSILVER GT400 (N2590A), Bollingbrook, IL, Substantial damage. Pilot departed Clow (IC5) at 1503 CDT en route to cushing (OC8). Pilot troubleshot crackling noise by turning off all electrical components one-by-one.…
- [Incident 20110829021399I](https://openairdocs.org/incident/20110829021399I), Aug 29, 2011: Burnett George CH-II (N114GX), Metropolis, IL, Minor damage. Pilot departed from runway 36 at the metropolos airport (M30). While climbing at approximately 400 feet AGL, the engine stuttered and then quit running. The…
- [Accident 20110423009599A](https://openairdocs.org/incident/20110423009599A), Apr 23, 2011: Solo Wings WINDLASS AQUILLA (N94370), Starke, FL, Destroyed, 1 fatal. Synopsis: N94370, a Solo Wings "Windlass Aquilla" experimental weight-shift control (wsc) light sport aircraft, impacted terrain on pilot's property near…
- [Accident 20110122000529A](https://openairdocs.org/incident/20110122000529A), Jan 22, 2011: Bice Carl AIR CREATIO (N4668L), Hayfork, CA, Substantial damage. Engnine failed due to possible carburetor ice. Forced landing in rough terrain. Pilot experienced rise in cylinder head and exhaust gas temperature then engine…
- [Accident 20100614035689A](https://openairdocs.org/incident/20100614035689A), Jun 14, 2010: Air Creatio GTE (N227EH), Springville, UT, Destroyed, 1 fatal. The aircraft took-off from a baseball field behind a junior high school. On the climb out after departure, just shortly after rotation, the aircraft struck the…
- [Incident 20091025051229I](https://openairdocs.org/incident/20091025051229I), Oct 25, 2009: Quad City U CHALLENGER (N75768), Fairmont, WV, Minor damage. During takeoff with a full tank of fuel from runway 5 of the Fairmont municipal airport (4G7) acceleration was normal. During climbout, between 200 feet and…
- [Accident 20090916018309A](https://openairdocs.org/incident/20090916018309A), Sep 16, 2009: Amtr CHALLENGERII (N732LS), Redlands, CA, Destroyed, 2 fatal. During traffic pattern approach to Redlands airport, the experimental aircraft crashed in an orange grove 3/4 mile southeast of runway 8. The NTSB gardena, CA…

All 65: https://openairdocs.org/engine/rotax-503-series/incidents.md

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