Rotax 503 DCDI
560 aircraft on the U.S. register carry a Rotax 503 DCDI engine, rated at about 52 horsepower. The Quad City Ultralight Acft Corp CHALLENGER II is the model most often fitted with it (22 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 DCDI. FAA spelling: 503 DCDI.
Fitted to model families
Quad City Ultralight Acft Corp CHALLENGER II22Quicksilver GT-40011Kolb FIRESTAR II7Quad City Ultralights CHALLENGER II7Airborne REDBACK5Kolb Aircraft FIRESTAR II5Aerotrike SAFARI4Kolb FIRESTAR4Quad City CHALLENGER II4Air Creation TWIN3Cosmos BISON3Cosmos PHASE II3
Quad City Ultralight Acft Corp CHALLENGER II · Quicksilver GT-400 · Kolb FIRESTAR II · Quad City Ultralights CHALLENGER II · Airborne REDBACK · Kolb Aircraft FIRESTAR II · Aerotrike SAFARI · Kolb FIRESTAR · Quad City CHALLENGER II · Air Creation TWIN
Where they are owner's state
Wisconsin36California35Texas34Florida31Illinois25Alabama25Washington22Georgia22Michigan17Ohio16
Kind of aircraft
Piston singles427 (76%)Weight-shift and powered parachutes120 (21%)Helicopters7 (1%)Gyroplanes3 (0.5%)Gliders3 (0.5%)
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 22 with this engine series
- Quicksilver GT-400 11 with this engine series
- Kolb FIRESTAR II 7 with this engine series
- Quad City Ultralights CHALLENGER II 7 with this engine series
- Airborne REDBACK 5 with this engine series
- Kolb Aircraft FIRESTAR II 5 with this engine series
- Aerotrike SAFARI 4 with this engine series
- Kolb FIRESTAR 4 with this engine series
Where they are
- Wisconsin 36 of these aircraft
- California 35 of these aircraft
- Texas 34 of these aircraft
- Florida 31 of these aircraft
- Illinois 25 of these aircraft
Biggest operators
- Evolution Aircraft INC 2 of these aircraft
Analytics
These connections as data: /graph/engine/rotax-503-dcdi.json · about the eFlight graph.
Aircraft newest certificates first · 560
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N5624R | Quad City Ul Co CHALLENGER 2 |
Fixed-wing, single engine | Individual owner Mississippi |
Experimental | 2026-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N279SD | Sidney G Drake RANS S-4 COYOTE |
Fixed-wing, single engine | Individual owner Texas |
Experimental | 2026-09-16 | ValidFAA registration status code V: Valid registration. All codes |
| N367DM | Markham David B MAINAIR BLADE |
Weight-shift control | Kc Aviation Aeroclub LLC Plantation, Florida |
Experimental | 2026-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N354CD | Platt James R KOLB FIRESTAR |
Fixed-wing, single engine | Individual owner Washington |
Experimental | 2026-09-02 | ValidFAA registration status code V: Valid registration. All codes |
| N6630Q | Kolb FIRESTAR |
Fixed-wing, single engine | Individual owner California |
Experimental | 2026-07-29 | ValidFAA registration status code V: Valid registration. All codes |
| N214TR | Hill J/Hill M CHALLENGER II |
Fixed-wing, single engine | Individual owner California |
Experimental | 2026-07-22 | ValidFAA registration status code V: Valid registration. All codes |
| N795ES | Brian M Schmid TORNADO 1 |
Fixed-wing, single engine | Individual owner Colorado |
Experimental | 2026-07-15 | ValidFAA registration status code V: Valid registration. All codes |
| N543BW | Wechman Brian CHALLENGER II |
Fixed-wing, single engine | Individual owner Tennessee |
Experimental | 2026-07-10 | ValidFAA registration status code V: Valid registration. All codes |
| N239WP | U-Fly-It Ultralights CHALLENGER II |
Fixed-wing, single engine | Co-owned owner Colorado |
Experimental | 2026-07-08 | ValidFAA registration status code V: Valid registration. All codes |
| N998TR | Aventura H P AMPHIBIAN |
Fixed-wing, single engine | Individual owner Texas |
Experimental | 2026-07-01 | ValidFAA registration status code V: Valid registration. All codes |
| N235AW | Rans S-14 |
Fixed-wing, single engine | Individual owner Georgia |
Experimental | 2026-05-31 | ValidFAA registration status code V: Valid registration. All codes |
| N24860 | Cgs Aviation HAWK ARROW |
Fixed-wing, single engine | Individual owner Florida |
Experimental | 2026-05-18 | ValidFAA registration status code V: Valid registration. All codes |
| N2694R | Quad Ultralight Aircraft Corp CHALLENGER II |
Fixed-wing, single engine | Individual owner Virginia |
Experimental | 2026-05-15 | ValidFAA registration status code V: Valid registration. All codes |
| N5069Y | Sabre Aircraft SABRE TRIKE |
Weight-shift control | Individual owner Puerto Rico |
Experimental | 2026-05-05 | ValidFAA registration status code V: Valid registration. All codes |
| N203CB | Quad City Ultralight Inc CHALLENGER II |
Fixed-wing, single engine | Individual owner Michigan |
Experimental | 2026-04-06 | ValidFAA registration status code V: Valid registration. All codes |
| N100CS | Scurlock Donald Craig CHALLENGER II |
Fixed-wing, single engine | Individual owner Alabama |
Experimental | 2026-04-03 | ValidFAA registration status code V: Valid registration. All codes |
| N6180H | Kolb FIRESTAR |
Fixed-wing, single engine | Individual owner Montana |
Experimental | 2026-03-13 | ValidFAA registration status code V: Valid registration. All codes |
| N989MC | Diamore Michael CHALLENGER II |
Fixed-wing, single engine | Individual owner Arkansas |
Experimental | 2026-02-28 | ValidFAA registration status code V: Valid registration. All codes |
| N67BU | Miguel D Jimenez MXL-2 |
Fixed-wing, single engine | Individual owner Georgia |
Experimental | 2026-02-12 | ValidFAA registration status code V: Valid registration. All codes |
| N400GV | Quicksilver GT-400 |
Fixed-wing, single engine | Individual owner Wisconsin |
Experimental | 2026-01-28 | ValidFAA registration status code V: Valid registration. All codes |
| N125VT | Caffrey Michael CHALLENGER II |
Fixed-wing, single engine | Individual owner Alaska |
Experimental | 2026-01-16 | ValidFAA registration status code V: Valid registration. All codes |
| N3554A | Trueba Thomas A QUICKSILVER SPORT II |
Fixed-wing, single engine | Individual owner California |
Experimental | 2026-01-09 | ValidFAA registration status code V: Valid registration. All codes |
| N4124T | Buckeye Powered Parachutes Inc 1998 |
Powered parachute | Individual owner Texas |
Experimental | 2026-01-06 | ValidFAA registration status code V: Valid registration. All codes |
| N43332 | Pioneer DUALSTAR |
Fixed-wing, single engine | Individual owner Utah |
Experimental | 2026-01-03 | ValidFAA registration status code V: Valid registration. All codes |
| N480PB | Jeff Brawley CHALLENGER II |
Fixed-wing, single engine | Individual owner Ohio |
Experimental | 2025-12-15 | ValidFAA registration status code V: Valid registration. All codes |
| N3733U | Umbarger Daniel L DANUMBARGERGTSPECIAL |
Fixed-wing, single engine | Individual owner Louisiana |
Experimental | 2025-12-11 | ValidFAA registration status code V: Valid registration. All codes |
| N382PC | Schirck Francis J EXCALIBUR/WIDE |
Fixed-wing, single engine | Individual owner Florida |
Experimental | 2025-11-23 | ValidFAA registration status code V: Valid registration. All codes |
| N53RK | Kettley Rick CHALLENGER II |
Fixed-wing, single engine | Individual owner Florida |
Experimental | 2025-10-28 | ValidFAA registration status code V: Valid registration. All codes |
| N526DR | Mainair BLADE |
Weight-shift control | Individual owner Montana |
Experimental | 2025-10-23 | ValidFAA registration status code V: Valid registration. All codes |
| N589SD | Pegasus Aviation QUANTUM 15 |
Weight-shift control | Co-owned owner South Carolina |
Experimental | 2025-10-23 | ValidFAA registration status code V: Valid registration. All codes |
| N626KW | Quad City Ultralight Acft Corp CHALLENGER II |
Fixed-wing, single engine | Individual owner Georgia |
Experimental | 2025-10-16 | ValidFAA registration status code V: Valid registration. All codes |
| N770DB | Daniel Barone HAWK 2 |
Fixed-wing, single engine | Individual owner Oklahoma |
Experimental | 2025-10-14 | ValidFAA registration status code V: Valid registration. All codes |
| N222CH | Macklin Dennis E CHALLENGER II |
Fixed-wing, single engine | Gnd Efeckt LLP Cairo, Nebraska |
Experimental | 2025-10-03 | ValidFAA registration status code V: Valid registration. All codes |
| N9237N | Quad City Ultralight Acft Corp CHALLENGER II |
Fixed-wing, single engine | Individual owner Georgia |
Experimental | 2025-09-26 | ValidFAA registration status code V: Valid registration. All codes |
| N2486Z | Buckeye Aviation DREAM MACHINE |
Powered parachute | Individual owner Indiana |
Experimental | 2025-09-17 | ValidFAA registration status code V: Valid registration. All codes |
| N58RM | Pipistrel TAURUS 503 LSA |
Electric airplane | Individual owner Georgia |
Standard | 2025-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N71419 | Rainbow Aircraft AEROTRIKE SAFARI |
Weight-shift control | Individual owner Nebraska |
Experimental | 2025-08-05 | ValidFAA registration status code V: Valid registration. All codes |
| N586BA | Phantom Aeronautics Llc PHANTOM X-1 |
Fixed-wing, single engine | Individual owner Idaho |
Experimental | 2025-07-23 | ValidFAA registration status code V: Valid registration. All codes |
| N94630 | Quad City Ultralight Acft Corp CHALLENGER II |
Fixed-wing, single engine | Individual owner Louisiana |
Experimental | 2025-07-09 | ValidFAA registration status code V: Valid registration. All codes |
| N109RH | Heigl Rudolph F FIRESTAR II |
Fixed-wing, single engine | Individual owner Oregon |
Experimental | 2025-06-20 | ValidFAA registration status code V: Valid registration. All codes |
| N842SC | Coyle Stephen W FLIGHTSTAR SC II |
Fixed-wing, single engine | Individual owner North Carolina |
Experimental | 2025-05-20 | ValidFAA registration status code V: Valid registration. All codes |
| N21388 | Kolb Aircraft Co FIRESTAR II |
Fixed-wing, single engine | Individual owner Minnesota |
Experimental | 2025-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N697M | Jacek Wietecha PULSAR 1 |
Fixed-wing, single engine | Individual owner Colorado |
Experimental | 2025-04-02 | ValidFAA registration status code V: Valid registration. All codes |
| N610RE | Matthew C Elder ME-10 |
Fixed-wing, single engine | Individual owner Maine |
Experimental | 2025-02-28 | ValidFAA registration status code V: Valid registration. All codes |
| N3792A | Harrison FIRESTAR 2 |
Fixed-wing, single engine | Individual owner Kentucky |
Experimental | 2025-02-21 | ValidFAA registration status code V: Valid registration. All codes |
| N120LF | Quicksilver GT-400 |
Fixed-wing, single engine | Individual owner California |
Experimental | 2025-02-20 | ValidFAA registration status code V: Valid registration. All codes |
| N552EL | Scherb Ernest CHALLENGER II |
Fixed-wing, single engine | Individual owner New Mexico |
Experimental | 2025-01-29 | ValidFAA registration status code V: Valid registration. All codes |
| N65763 | Quad City Ultralight Acft Corp CHALLENGER II |
Fixed-wing, single engine | Individual owner Michigan |
Experimental | 2025-01-07 | ValidFAA registration status code V: Valid registration. All codes |
| N2963A | Flightstar FLIGHTSTAR II-SL |
Fixed-wing, single engine | Individual owner Indiana |
Experimental | 2025-01-06 | ValidFAA registration status code V: Valid registration. All codes |
| N515YT | Robinson James E CHALLENGER II |
Fixed-wing, single engine | Individual owner Tennessee |
Experimental | 2024-12-21 | ValidFAA registration status code V: Valid registration. All codes |
| N228BT | Quicksilver Manufacturing MXLII |
Fixed-wing, single engine | Individual owner Puerto Rico |
Experimental | 2024-12-14 | ValidFAA registration status code V: Valid registration. All codes |
| N9381M | Wulfinghoff Donald R MXII |
Fixed-wing, single engine | Individual owner Maryland |
Experimental | 2024-12-09 | ValidFAA registration status code V: Valid registration. All codes |
| N8602X | Lamirande Challenger Ii CHALLENGER II |
Fixed-wing, single engine | Individual owner Indiana |
Experimental | 2024-12-03 | ValidFAA registration status code V: Valid registration. All codes |
| N134JM | Joseph B Mines SUPER 103 |
Powered parachute | Individual owner Florida |
Experimental | 2024-11-26 | ValidFAA registration status code V: Valid registration. All codes |
| N80857 | Strickland Benjamin F QUICKSILVER MXLII SP |
Fixed-wing, single engine | Individual owner Alabama |
Experimental | 2024-11-25 | ValidFAA registration status code V: Valid registration. All codes |
| N1666R | Holtz Rodney R CHALLENGER II |
Fixed-wing, single engine | Individual owner New Hampshire |
Experimental | 2024-10-30 | ValidFAA registration status code V: Valid registration. All codes |
| N35172 | Aerotrike SAFARI |
Weight-shift control | Individual owner Mississippi |
Experimental | 2024-10-28 | ValidFAA registration status code V: Valid registration. All codes |
| N523MH | Flightstar IISL |
Fixed-wing, single engine | Individual owner Michigan |
Experimental | 2024-09-04 | ValidFAA registration status code V: Valid registration. All codes |
| N75051 | Williams Samuel V CHALLENGER II |
Fixed-wing, single engine | Individual owner Alabama |
Experimental | 2024-08-28 | ValidFAA registration status code V: Valid registration. All codes |
| N503DK | Francois Tillmann CHALLENGER II |
Fixed-wing, single engine | Individual owner Illinois |
Experimental | 2024-08-22 | ValidFAA registration status code V: Valid registration. All codes |
| N445WS | Flightstar IISL |
Fixed-wing, single engine | Individual owner New Mexico |
Experimental | 2024-08-13 | ValidFAA registration status code V: Valid registration. All codes |
| N774DD | Druen Daniel L CHALLENGER II SPECIA |
Fixed-wing, single engine | Individual owner Arizona |
Experimental | 2024-07-31 | ValidFAA registration status code V: Valid registration. All codes |
| N728GB | Bipes Gary RANS S-12XL |
Fixed-wing, single engine | Individual owner Minnesota |
Experimental | 2024-07-19 | ValidFAA registration status code V: Valid registration. All codes |
| N453G | Challenger CHALLENGER II |
Fixed-wing, single engine | Individual owner Mississippi |
Experimental | 2024-07-16 | ValidFAA registration status code V: Valid registration. All codes |
| N141TL | Dunning R Morton CHALLENGER II |
Fixed-wing, single engine | Individual owner Florida |
Experimental | 2024-07-13 | ValidFAA registration status code V: Valid registration. All codes |
| N556CF | Capella Aircraft Corp FW1C50 |
Fixed-wing, single engine | Individual owner Missouri |
Experimental | 2024-07-10 | ValidFAA registration status code V: Valid registration. All codes |
| N52711 | Rutter William CHALLENGER II |
Fixed-wing, single engine | Sharp Maurice D Wakefield, Kansas |
Experimental | 2024-06-01 | ValidFAA registration status code V: Valid registration. All codes |
| N22HK | Cgs Hawk HAWK CLASSIC |
Fixed-wing, single engine | Individual owner North Carolina |
Experimental | 2024-05-28 | ValidFAA registration status code V: Valid registration. All codes |
| N1673L | Pegasus Aviation QUANTUM SS-15-503 |
Weight-shift control | Individual owner Virginia |
Experimental | 2024-05-20 | ValidFAA registration status code V: Valid registration. All codes |
| N2636E | Wehrman Don C SKYRANGER |
Fixed-wing, single engine | Individual owner Washington |
Experimental | 2024-05-08 | ValidFAA registration status code V: Valid registration. All codes |
| N16VE | Englert David A HAWK ARROW |
Fixed-wing, single engine | Individual owner California |
Experimental | 2024-05-07 | ValidFAA registration status code V: Valid registration. All codes |
| N484CB | Quad City Ultralight Acft Corp CHALLENGER I |
Fixed-wing, single engine | Individual owner Kentucky |
Experimental | 2024-05-02 | ValidFAA registration status code V: Valid registration. All codes |
| N497DH | Cgs Hawk ARROW |
Fixed-wing, single engine | Individual owner Arizona |
Experimental | 2024-05-01 | ValidFAA registration status code V: Valid registration. All codes |
| N878DW | Titan Aircraft TORNADO I |
Fixed-wing, single engine | Individual owner California |
Experimental | 2024-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N289MN | Nielsen Martin M CHALLENGER II |
Fixed-wing, single engine | Individual owner Iowa |
Experimental | 2024-04-20 | ValidFAA registration status code V: Valid registration. All codes |
| N1874M | Meares Thomas H CHALLENGER II |
Fixed-wing, single engine | Individual owner Florida |
Experimental | 2024-04-02 | ValidFAA registration status code V: Valid registration. All codes |
| N2550E | Quad City Ultralight Acft Corp CHALLENGER II |
Fixed-wing, single engine | Individual owner Tennessee |
Experimental | 2024-03-16 | ValidFAA registration status code V: Valid registration. All codes |
| N117ZZ | Flightstar SPYDER/FORMULA |
Fixed-wing, single engine | Individual owner Vermont |
Experimental | 2024-02-23 | ValidFAA registration status code V: Valid registration. All codes |
| N147PM | Quad City CHALLENGER II |
Fixed-wing, single engine | Individual owner California |
Experimental | 2024-02-19 | ValidFAA registration status code V: Valid registration. All codes |
| N9237E | Quad City Ultralight Acft Corp CHALLENGER II |
Fixed-wing, single engine | Individual owner Georgia |
Experimental | 2024-01-03 | ValidFAA registration status code V: Valid registration. All codes |
| N612NC | Michael E Schumacher CHALLENGER II |
Fixed-wing, single engine | Individual owner Illinois |
Experimental | 2023-12-28 | ValidFAA registration status code V: Valid registration. All codes |
| N4374A | Nicholson Bill CHALLENGER II LW |
Fixed-wing, single engine | Tpi Aviation LLC Germantown, Wisconsin |
Experimental | 2023-12-19 | ValidFAA registration status code V: Valid registration. All codes |
| N503HW | Quicksilver GT-400 |
Fixed-wing, single engine | Individual owner Illinois |
Experimental | 2023-12-18 | ValidFAA registration status code V: Valid registration. All codes |
| N203MG | Schantz James CHALLENGER 2 |
Fixed-wing, single engine | Individual owner California |
Experimental | 2023-12-15 | ValidFAA registration status code V: Valid registration. All codes |
| N1974L | Miner Lloyd A CHALLENGER II |
Fixed-wing, single engine | Individual owner Wisconsin |
Experimental | 2023-12-06 | ValidFAA registration status code V: Valid registration. All codes |
| N1655E | Kolb FIRESTAR KXP |
Fixed-wing, single engine | Individual owner Illinois |
Experimental | 2023-12-05 | ValidFAA registration status code V: Valid registration. All codes |
| N722KM | Kolb TWINSTAR MARK II |
Fixed-wing, single engine | Individual owner Michigan |
Experimental | 2023-12-04 | ValidFAA registration status code V: Valid registration. All codes |
| N324DP | Dale J Phillips CHALLENGER II |
Fixed-wing, single engine | Individual owner Iowa |
Experimental | 2023-11-30 | ValidFAA registration status code V: Valid registration. All codes |
| N112CL | Apex APEX CROSS-5X |
Weight-shift control | Miller Larry G Sioux Falls, South Dakota |
Experimental | 2023-11-28 | ValidFAA registration status code V: Valid registration. All codes |
| N935EH | Hanley Edward E Iii CHALLENGER II |
Fixed-wing, single engine | Individual owner Arizona |
Experimental | 2023-10-24 | ValidFAA registration status code V: Valid registration. All codes |
| N42767 | Northwing Design Inc APACHE SPORT |
Weight-shift control | Individual owner New Jersey |
Experimental | 2023-10-13 | ValidFAA registration status code V: Valid registration. All codes |
| N1948R | Bura David CHALLENGER II |
Fixed-wing, single engine | Individual owner Kentucky |
Experimental | 2023-10-07 | ValidFAA registration status code V: Valid registration. All codes |
| N2491Z | Machir Daniel F CHALLENGER II STANDA |
Fixed-wing, single engine | Individual owner Missouri |
Experimental | 2023-10-06 | ValidFAA registration status code V: Valid registration. All codes |
| N9088G | Reppert Merlyn R HURRICANE HP |
Fixed-wing, single engine | Individual owner Nevada |
Experimental | 2023-09-17 | ValidFAA registration status code V: Valid registration. All codes |
| N623LY | Cgs Aviation SINGLE SEAT CLASSIC |
Fixed-wing, single engine | Individual owner Virginia |
Experimental | 2023-09-04 | ValidFAA registration status code V: Valid registration. All codes |
| N3064J | Air Creation TWIN |
Weight-shift control | Howell Aviation LLC Orlando, Florida |
Experimental | 2023-08-18 | ValidFAA registration status code V: Valid registration. All codes |
| N945RJ | Ronald L Ohair CHALLENGER II |
Fixed-wing, single engine | Individual owner Alaska |
Experimental | 2023-08-14 | ValidFAA registration status code V: Valid registration. All codes |
| N31601 | Piela John D PHANTOM X1 |
Fixed-wing, single engine | Individual owner Michigan |
Experimental | 2023-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N2091J | Cheurier Armand KITFOX 3 |
Fixed-wing, single engine | Individual owner Tennessee |
Experimental | 2023-08-02 | ValidFAA registration status code V: Valid registration. All codes |
| N6220S | Hanson Phillip E CHALLENGER II |
Fixed-wing, single engine | Individual owner Illinois |
Experimental | 2023-07-29 | ValidFAA registration status code V: Valid registration. All codes |
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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.