Rotax 503 series
449 aircraft on the U.S. register carry a Rotax 503 series engine, rated at about 52 horsepower. The Quad City Ultralight Acft Corp CHALLENGER II is the model most often fitted with it (8 aircraft). The aircraft carrying it were built between 1983 and 2025.
The FAA records engines by code, usually at the level of a series ("O-320 series") rather than the exact variant; this page gathers every FAA code that reads as Rotax 503 series. FAA spelling: 503 SERIES.
Fitted to model families
Quad City Ultralight Acft Corp CHALLENGER II8Quicksilver SPORT5Quad City Ultralights CHALLENGER II4Quicksilver GT-4004Quicksilver SPRINT II4Air Creation GTE3Air Creation TWIN3Buckeye DREAM MACHINE3Buckeye Industries DREAM MACHINE3North Wing APACHE3Pipistrel TAURUS3Powrachute Corp SKY RASCAL3
Quad City Ultralight Acft Corp CHALLENGER II · Quicksilver SPORT · Quad City Ultralights CHALLENGER II · Quicksilver GT-400 · Quicksilver SPRINT II · Air Creation GTE · Air Creation TWIN · Buckeye DREAM MACHINE · Buckeye Industries DREAM MACHINE · North Wing APACHE
Where they are owner's state
California29Florida28Texas22Indiana20Illinois20Wisconsin17Oklahoma15North Carolina15Ohio14Arizona14
Kind of aircraft
Piston singles321 (71%)Weight-shift and powered parachutes108 (24%)Gyroplanes9 (2%)Helicopters6 (1%)Gliders5 (1%)
When the aircraft were built by decade
Connections how this engine series links to the rest of the register
Fitted to
- Quad City Ultralight Acft Corp CHALLENGER II 8 with this engine series
- Quicksilver SPORT 5 with this engine series
- Quad City Ultralights CHALLENGER II 4 with this engine series
- Quicksilver GT-400 4 with this engine series
- Quicksilver SPRINT II 4 with this engine series
- Air Creation GTE 3 with this engine series
- Air Creation TWIN 3 with this engine series
- Buckeye DREAM MACHINE 3 with this engine series
Where they are
- California 29 of these aircraft
- Florida 28 of these aircraft
- Texas 22 of these aircraft
- Indiana 20 of these aircraft
- Illinois 20 of these aircraft
Biggest operators
- Tsi Holdco INC 1 of these aircraft
Analytics
These connections as data: /graph/engine/rotax-503-series.json · about the eFlight graph.
Aircraft newest certificates first · 449
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N464FH | Hooper Clint CHALLENGER II SPEC |
Fixed-wing, single engine | Cipher-Tec Systems INC Tulsa, Oklahoma |
Experimental | 2012-11-28 | ValidFAA registration status code V: Valid registration. All codes |
| N4394J | Quicksilver GT-400 |
Fixed-wing, single engine | Individual owner Texas |
Experimental | 2012-10-24 | ValidFAA registration status code V: Valid registration. All codes |
| N2493G | Quad City Ultralight CHALLENGER II |
Fixed-wing, single engine | Co-owned owner North Carolina |
Experimental | 2012-09-24 | ValidFAA registration status code V: Valid registration. All codes |
| N503BK | Sabre SS-16 |
Weight-shift control | Individual owner Maryland |
Experimental | 2012-09-21 | ValidFAA registration status code V: Valid registration. All codes |
| N1532W | Team Inc MINI-MAX 1300-R |
Fixed-wing, single engine | Individual owner California |
Experimental | 2012-09-18 | ValidFAA registration status code V: Valid registration. All codes |
| N3782D | Ledbetter George FLIGHTSTAR II |
Fixed-wing, single engine | Individual owner Indiana |
Experimental | 2012-09-11 | ValidFAA registration status code V: Valid registration. All codes |
| N8879W | Hubler Harvey D SPORT SPECIAL |
Fixed-wing, single engine | Individual owner New York |
Experimental | 2012-08-21 | ValidFAA registration status code V: Valid registration. All codes |
| N338AG | Goerdel Darryl GYROBEE |
Rotorcraft | Individual owner Washington |
Experimental | 2012-07-17 | ValidFAA registration status code V: Valid registration. All codes |
| N2614H | Dfs TRIKE |
Weight-shift control | Co-owned owner Florida |
Experimental | 2012-06-11 | ValidFAA registration status code V: Valid registration. All codes |
| N519BB | Baker Burton C QUICKSILVER GT-400 |
Fixed-wing, single engine | Individual owner Florida |
Experimental | 2012-05-01 | ValidFAA registration status code V: Valid registration. All codes |
| N56JV | Roger Dantzler RD-1 |
Fixed-wing, single engine | Individual owner South Carolina |
Experimental | 2012-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N5156F | Cosmos BISON |
Weight-shift control | Individual owner Tennessee |
Experimental | 2012-04-16 | ValidFAA registration status code V: Valid registration. All codes |
| N961LS | Stapleton Lawrence STAPLETON EAGLE |
Weight-shift control | Individual owner Missouri |
Experimental | 2011-12-29 | ValidFAA registration status code V: Valid registration. All codes |
| N20458 | Thibodeau Albert TWINSTAR MK II |
Fixed-wing, single engine | Individual owner Massachusetts |
Experimental | 2011-11-22 | ValidFAA registration status code V: Valid registration. All codes |
| N116TF | Sportflight Aviation TALON X/P |
Fixed-wing, single engine | Individual owner Georgia |
Experimental | 2011-10-13 | ValidFAA registration status code V: Valid registration. All codes |
| N770JB | James Betts JB1 |
Weight-shift control | Individual owner Florida |
Experimental | 2011-08-10 | ValidFAA registration status code V: Valid registration. All codes |
| N5110F | Wade James D PHANTOM XI |
Fixed-wing, single engine | Individual owner Michigan |
Experimental | 2011-07-12 | ValidFAA registration status code V: Valid registration. All codes |
| N956TW | Kinman Robert Bruce CHALLENGER II |
Fixed-wing, single engine | Individual owner Mississippi |
Experimental | 2011-03-17 | ValidFAA registration status code V: Valid registration. All codes |
| N536AA | American Aircraft Inc FALCON XP |
Fixed-wing, single engine | Individual owner Utah |
Experimental | 2011-03-03 | ValidFAA registration status code V: Valid registration. All codes |
| N56468 | Harris Jerry A QUICKSILVER SPORT II |
Fixed-wing, single engine | Individual owner Oklahoma |
Experimental | 2010-08-03 | ValidFAA registration status code V: Valid registration. All codes |
| N517EM | Middleton Emmette CHALLENGER II |
Fixed-wing, single engine | Individual owner Arkansas |
Experimental | 2010-07-27 | ValidFAA registration status code V: Valid registration. All codes |
| N2146N | Quicksilver MXL II |
Fixed-wing, single engine | Kaiser Aerosports LLC Stratford, Wisconsin |
Experimental | 2010-05-06 | ValidFAA registration status code V: Valid registration. All codes |
| N241HT | Quad City CHALLENGER 2 |
Fixed-wing, single engine | Individual owner Florida |
Experimental | 2010-03-26 | ValidFAA registration status code V: Valid registration. All codes |
| N220AE | Ovelman Daniel D CHALLENGER II |
Fixed-wing, single engine | Individual owner Pennsylvania |
Experimental | 2010-02-26 | ValidFAA registration status code V: Valid registration. All codes |
| N25440 | Collins Gary CHALLENGER II |
Fixed-wing, single engine | Individual owner Oklahoma |
Experimental | 2010-02-03 | ValidFAA registration status code V: Valid registration. All codes |
| N124AR | Destiny 2000 |
Powered parachute | Co-owned owner Louisiana |
Experimental | 2009-10-28 | ValidFAA registration status code V: Valid registration. All codes |
| N70676 | Quad City Ultralight CH II |
Fixed-wing, single engine | Individual owner Montana |
Experimental | 2009-10-28 | ValidFAA registration status code V: Valid registration. All codes |
| N3861Z | Grego C/Grego H CHALLENGER LSS |
Fixed-wing, single engine | Individual owner Michigan |
Experimental | 2009-07-28 | ValidFAA registration status code V: Valid registration. All codes |
| N41XG | Niles Frederick A DOMINATOR |
Gyroplane | Individual owner Maryland |
Experimental | 2009-07-10 | ValidFAA registration status code V: Valid registration. All codes |
| N221KS | Pipistrel TAURUS 503 |
Electric airplane | Individual owner Texas |
Experimental | 2009-06-30 | ValidFAA registration status code V: Valid registration. All codes |
| N95361 | Harmenings DELUXE |
Powered parachute | Co-owned owner New Mexico |
Experimental | 2009-06-09 | ValidFAA registration status code V: Valid registration. All codes |
| N3564F | Kolb FIRESTAR |
Fixed-wing, single engine | Individual owner Virginia |
Experimental | 2009-06-01 | ValidFAA registration status code V: Valid registration. All codes |
| N373UY | Young Virgil R SUPER BEE |
Rotorcraft | Individual owner Kentucky |
Experimental | 2009-02-04 | ValidFAA registration status code V: Valid registration. All codes |
| N2816B | Rans Aircraft S-14 |
Fixed-wing, single engine | Individual owner California |
Experimental | 2009-01-13 | ValidFAA registration status code V: Valid registration. All codes |
| N5092Y | Kulberg SPORT II |
Fixed-wing, single engine | Individual owner California |
Experimental | 2009-01-13 | ValidFAA registration status code V: Valid registration. All codes |
| N2676N | Six Chuter Inc LEGEND SE |
Powered parachute | Individual owner Utah |
Experimental | 2008-12-23 | ValidFAA registration status code V: Valid registration. All codes |
| N6109Z | Quad City Ultralight Acft Corp CHALLENGER II |
Fixed-wing, single engine | Individual owner Nebraska |
Experimental | 2008-11-07 | ValidFAA registration status code V: Valid registration. All codes |
| N5547B | Air Creation TWIN 503SL |
Weight-shift control | Individual owner Illinois |
Experimental | 2008-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N3117G | Byrd Melvin Gene CHALLENGER II |
Fixed-wing, single engine | Individual owner North Carolina |
Experimental | 2008-08-27 | ValidFAA registration status code V: Valid registration. All codes |
| N117ZX | Quicksilver MXII SPORT |
Fixed-wing, single engine | Individual owner Florida |
Experimental | 2008-08-20 | ValidFAA registration status code V: Valid registration. All codes |
| N656RP | Peters Rodney E EXCALIBUR |
Fixed-wing, single engine | Individual owner Indiana |
Experimental | 2008-07-23 | ValidFAA registration status code V: Valid registration. All codes |
| N343TP | Pirkle Anthony E FIRESTAR II |
Fixed-wing, single engine | Individual owner Alabama |
Experimental | 2008-06-25 | ValidFAA registration status code V: Valid registration. All codes |
| N4414G | Team Aircraft Mini Max 1600 R SPORT |
Fixed-wing, single engine | Individual owner Louisiana |
Experimental | 2008-06-17 | ValidFAA registration status code V: Valid registration. All codes |
| N2629A | Apex CROSS 5 |
Weight-shift control | Individual owner California |
Experimental | 2008-06-04 | ValidFAA registration status code V: Valid registration. All codes |
| N75734 | T-Bird T-BIRD I |
Fixed-wing, single engine | Individual owner Iowa |
Experimental | 2008-02-15 | ValidFAA registration status code V: Valid registration. All codes |
| N522JF | Quad City CHALLENGER 2 |
Fixed-wing, single engine | Individual owner Washington |
Experimental | 2008-01-25 | ValidFAA registration status code V: Valid registration. All codes |
| N576KC | Air Creation TWIN |
Weight-shift control | Individual owner Washington |
Experimental | 2008-01-25 | ValidFAA registration status code V: Valid registration. All codes |
| N2563N | Harmening High Flyer STANDARD |
Powered parachute | Individual owner North Carolina |
Experimental | 2008-01-24 | ValidFAA registration status code V: Valid registration. All codes |
| N108ZX | Six Chuter Inc SKY RIDER AEROCHUTE |
Powered parachute | Individual owner Ohio |
Experimental | 2008-01-17 | ValidFAA registration status code V: Valid registration. All codes |
| N139ST | Heizer J/Quicksilver SPRINT II |
Fixed-wing, single engine | Individual owner Nevada |
Experimental | 2008-01-16 | ValidFAA registration status code V: Valid registration. All codes |
| N403AF | Rozier Ricky PHANTOM |
Fixed-wing, single engine | Individual owner North Carolina |
Experimental | 2008-01-11 | ValidFAA registration status code V: Valid registration. All codes |
| N4409U | Race Air MICRO MONG |
Fixed-wing, single engine | Individual owner Tennessee |
Experimental | 2007-12-20 | ValidFAA registration status code V: Valid registration. All codes |
| N7521Q | Airborne EDGE X |
Weight-shift control | Individual owner Idaho |
Experimental | 2007-12-05 | ValidFAA registration status code V: Valid registration. All codes |
| N142AB | Pegasus Aviation QUANTUM-503 |
Weight-shift control | Individual owner Indiana |
Experimental | 2007-12-03 | ValidFAA registration status code V: Valid registration. All codes |
| N75416 | Buckeye DREAM MACHINE |
Powered parachute | Individual owner Texas |
Experimental | 2007-11-30 | ValidFAA registration status code V: Valid registration. All codes |
| N168FL | Six Chuter SR7 XL |
Powered parachute | Individual owner Florida |
Experimental | 2007-11-29 | ValidFAA registration status code V: Valid registration. All codes |
| N345MN | Norman Me CHALLENGER IISPECIAL |
Fixed-wing, single engine | Individual owner Washington |
Experimental | 2007-11-29 | ValidFAA registration status code V: Valid registration. All codes |
| N554TC | Quicksilver SPRINT |
Fixed-wing, single engine | Individual owner California |
Experimental | 2007-11-29 | ValidFAA registration status code V: Valid registration. All codes |
| N503JF | Air Creation GTE |
Weight-shift control | Individual owner Minnesota |
Experimental | 2007-11-21 | ValidFAA registration status code V: Valid registration. All codes |
| N3848V | Quicksilver GT-400 |
Fixed-wing, single engine | Individual owner Oregon |
Experimental | 2007-11-09 | ValidFAA registration status code V: Valid registration. All codes |
| N5569J | Stone Alex M PHANTOM X-1 |
Fixed-wing, single engine | Individual owner South Carolina |
Experimental | 2007-11-09 | ValidFAA registration status code V: Valid registration. All codes |
| N5701Y | Solo Wings Cc WINDLESS AQUILLA |
Weight-shift control | Individual owner Pennsylvania |
Experimental | 2007-11-05 | ValidFAA registration status code V: Valid registration. All codes |
| N6991X | Quad Cities CHALLENGER II |
Fixed-wing, single engine | Individual owner Iowa |
Experimental | 2007-11-05 | ValidFAA registration status code V: Valid registration. All codes |
| N4995L | Hobbs Dan D QUICKSILVER MXLIISPO |
Fixed-wing, single engine | Individual owner California |
Experimental | 2007-11-01 | ValidFAA registration status code V: Valid registration. All codes |
| N3203S | Quicksilver MXL II SPORT |
Fixed-wing, single engine | Individual owner Mississippi |
Experimental | 2007-10-30 | ValidFAA registration status code V: Valid registration. All codes |
| N5698N | Kilburg Larry N TIERRA I |
Fixed-wing, single engine | Individual owner Iowa |
Experimental | 2007-10-30 | ValidFAA registration status code V: Valid registration. All codes |
| N618DM | Moulton Donald AIR COMMAND |
Rotorcraft | Individual owner Illinois |
Experimental | 2007-10-30 | ValidFAA registration status code V: Valid registration. All codes |
| N4818T | King James A QUICKSILVER MX II |
Fixed-wing, single engine | Individual owner Oklahoma |
Experimental | 2007-10-26 | ValidFAA registration status code V: Valid registration. All codes |
| N5623R | Six Chuter SR2 |
Powered parachute | Co-owned owner Arizona |
Experimental | 2007-10-19 | ValidFAA registration status code V: Valid registration. All codes |
| N54GJ | Johnson Gary CHALLENGER II |
Fixed-wing, single engine | Individual owner Tennessee |
Experimental | 2007-10-17 | ValidFAA registration status code V: Valid registration. All codes |
| N669VM | M-Squared BREESE 1 |
Fixed-wing, single engine | Individual owner Arkansas |
Experimental | 2007-10-11 | ValidFAA registration status code V: Valid registration. All codes |
| N5626S | Blenker Peter A QUICKSILVER SPORT II |
Fixed-wing, single engine | Individual owner Wisconsin |
Experimental | 2007-10-10 | ValidFAA registration status code V: Valid registration. All codes |
| N2604P | Buckeye 503 |
Powered parachute | Individual owner Texas |
Experimental | 2007-10-05 | ValidFAA registration status code V: Valid registration. All codes |
| N4909L | Gunderson Roger D EROS 1650 R |
Fixed-wing, single engine | Individual owner Arizona |
Experimental | 2007-10-05 | ValidFAA registration status code V: Valid registration. All codes |
| N126AS | Quicksilver MXL II |
Fixed-wing, single engine | Individual owner South Carolina |
Experimental | 2007-10-02 | ValidFAA registration status code V: Valid registration. All codes |
| N3521C | Buccaneer Aircraft BUCCANEER SX |
Fixed-wing, single engine | Individual owner Wisconsin |
Experimental | 2007-09-20 | ValidFAA registration status code V: Valid registration. All codes |
| N56080 | Parascender PARASCENDER II |
Powered parachute | Individual owner Maine |
Experimental | 2007-09-19 | ValidFAA registration status code V: Valid registration. All codes |
| N5602Y | Harmening HIGH FLYER |
Powered parachute | Individual owner North Carolina |
Experimental | 2007-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N15GY | Richey Kevin B SPORTCOPTER LIGHTNIN |
Gyroplane | Individual owner Oregon |
Experimental | 2007-09-13 | ValidFAA registration status code V: Valid registration. All codes |
| N23826 | Airborne REDBACK |
Weight-shift control | Individual owner Pennsylvania |
Experimental | 2007-09-11 | ValidFAA registration status code V: Valid registration. All codes |
| N7576A | North Wing Design AST 503B |
Weight-shift control | Individual owner Florida |
Experimental | 2007-09-10 | ValidFAA registration status code V: Valid registration. All codes |
| N9259F | Engle David TWO PLACE TUKANTRIKE |
Weight-shift control | Individual owner New York |
Experimental | 2007-09-07 | ValidFAA registration status code V: Valid registration. All codes |
| N235MS | Quicksilver SPRINT II |
Fixed-wing, single engine | Individual owner Michigan |
Experimental | 2007-09-06 | ValidFAA registration status code V: Valid registration. All codes |
| N178PJ | Phantom Aeronautics Llc PHANTOM |
Fixed-wing, single engine | Individual owner Michigan |
Experimental | 2007-09-05 | ValidFAA registration status code V: Valid registration. All codes |
| N2981A | Skaggs Steven E CHALLENGER II |
Fixed-wing, single engine | Individual owner California |
Experimental | 2007-09-05 | ValidFAA registration status code V: Valid registration. All codes |
| N599JS | Davis Dalton ULTRA MAX |
Fixed-wing, single engine | Individual owner California |
Experimental | 2007-09-05 | ValidFAA registration status code V: Valid registration. All codes |
| N2773A | Powrachute Corp SKY RASCAL |
Powered parachute | Individual owner West Virginia |
Experimental | 2007-08-31 | ValidFAA registration status code V: Valid registration. All codes |
| N1281A | Kolb FIRESTAR |
Fixed-wing, single engine | Albert Lea Airport INC Albert Lea, Minnesota |
Experimental | 2007-08-30 | ValidFAA registration status code V: Valid registration. All codes |
| N2715A | Hopkins Gary S TITAN TORNADO I |
Fixed-wing, single engine | Individual owner Virginia |
Experimental | 2007-08-30 | ValidFAA registration status code V: Valid registration. All codes |
| N2606T | Kolb Aircraft Co TWINSTAR |
Fixed-wing, single engine | Individual owner Texas |
Experimental | 2007-08-29 | ValidFAA registration status code V: Valid registration. All codes |
| N33GY | Stayner Guy A SAFARI |
Weight-shift control | Individual owner Arizona |
Experimental | 2007-08-29 | ValidFAA registration status code V: Valid registration. All codes |
| N1820C | Quicksilver SPORT |
Fixed-wing, single engine | Individual owner Wisconsin |
Experimental | 2007-08-27 | ValidFAA registration status code V: Valid registration. All codes |
| N825KP | Six Chuter SKYE RYDER |
Powered parachute | Individual owner Utah |
Experimental | 2007-08-27 | ValidFAA registration status code V: Valid registration. All codes |
| N3520D | Eber Douglas C MX II |
Fixed-wing, single engine | Individual owner Indiana |
Experimental | 2007-08-24 | ValidFAA registration status code V: Valid registration. All codes |
| N3084W | Weiler John E CHALLENGER II |
Fixed-wing, single engine | Individual owner Indiana |
Experimental | 2007-08-17 | ValidFAA registration status code V: Valid registration. All codes |
| N6122F | Buckeye Industries DREAM MACHINE |
Powered parachute | Individual owner Michigan |
Experimental | 2007-08-13 | ValidFAA registration status code V: Valid registration. All codes |
| N757XP | Gray Dennis S FLIGHTSTAR 1 |
Fixed-wing, single engine | Individual owner Oregon |
Experimental | 2007-08-13 | ValidFAA registration status code V: Valid registration. All codes |
| N8025U | Eipper QUICKSILVER MXIIA |
Fixed-wing, single engine | Individual owner Missouri |
Experimental | 2007-08-10 | ValidFAA registration status code V: Valid registration. All codes |
| N6177A | Airborne Wind Sports EDGE |
Weight-shift control | Individual owner Arkansas |
Experimental | 2007-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N8115U | Gill Jay L XL2-SPORT |
Powered parachute | Individual owner Arkansas |
Experimental | 2007-08-01 | ValidFAA registration status code V: Valid registration. All codes |
Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.