The register · data as of October 7, 2026

Aircraft with Rotax 503 DCDI engines that are piston singles

427 on the U.S. register, newest registrations first. This is the list behind a number on another page; the words above say exactly what it counts. Individuals are not named at this time; companies, trusts and government bodies are shown as the FAA publishes them.

Tail no.	Maker and model	Owner and base	Certificate	Registered	Status
N7456B	Michael E Smith QUICKSILVER MXII	Individual owner Arkansas	Experimental	2023-02-28	Valid
N5518Y	Carlson Lloyd G CHALLENGER I	Individual owner Louisiana	Experimental	2023-02-25	Valid
N923FA	Fowler Patrick CHALLENGER II	Individual owner Ohio	Experimental	2023-02-21	Valid
N8083E	Kokkinos Hare RANS S.14	Individual owner Colorado	Experimental	2023-02-15	Valid
N878VB	David A Stirbis QUAD CITY CHLNGR CH2	Individual owner Colorado	Experimental	2023-01-27	Valid
N5949Y	Howard Rogers MXL II SPORT	Individual owner Texas	Experimental	2023-01-24	Valid
N138JB	Beauboeuf Jeffrey M BEAUBOEUF FIRESTAR	Co-owned owner Massachusetts	Experimental	2023-01-03	Valid
N522DW	Willis Danny CHALLENGER II	Individual owner Oklahoma	Experimental	2022-12-15	Valid
N2090A	Byrd Kenneth A KOLB FIRESTAR II	Individual owner Colorado	Experimental	2022-12-14	Valid
N164ZX	Quad City Challenger CHALLENGER II	Individual owner Washington	Experimental	2022-12-10	Valid
N512JX	Cgs Aviation SINGLE SEAT CLASSIC	Individual owner Georgia	Experimental	2022-11-26	Valid
N356PS	Pergande Mark A CHALLENGER II	Individual owner Alabama	Experimental	2022-11-11	Valid
N9434F	Ultralight Aircraft Corp CHALLENGER II	Individual owner South Carolina	Experimental	2022-11-02	Valid
N5161V	Ultralight Flight Inc PHANTOM I	Co-owned owner Michigan	Experimental	2022-10-11	Valid
N108RG	Flying K Enterprizes SKY RAIDER II	Co-owned owner North Carolina	Experimental	2022-09-23	Valid
N4493G	Loehle Sport Parasol AIR CAMPER	Individual owner Washington	Experimental	2022-08-30	Valid
N613MD	Daugherty Monte R RIDGE RUNNER III	Individual owner Wisconsin	Experimental	2022-08-29	Valid
N187EJ	Quad City Ultralight Acft Corp CHALLENGER II	Individual owner North Dakota	Experimental	2022-08-22	Valid
N75023	Deegan Michael J HORNET	Individual owner Washington	Experimental	2022-07-08	Valid
N5603U	Quicksilver GT-400	Individual owner Pennsylvania	Experimental	2022-06-08	Valid
N701GK	Challenger CHALLENGER I	Individual owner Pennsylvania	Experimental	2022-06-06	Valid
N911UL	Quad City Ultralight Acft Corp CHALLENGER I	Individual owner Minnesota	Experimental	2022-05-26	Valid
N4393G	Quicksilver GT-400	Individual owner Texas	Experimental	2022-05-10	Valid
N963DG	Kolb FIRESTAR II	Individual owner Wyoming	Experimental	2022-04-29	Valid
N50903	Leon James M FLIGHTSTAR IISC	Individual owner North Carolina	Experimental	2022-04-19	Valid
N1453F	Gutierrez Jess R TALON MAGNUM	Individual owner Idaho	Experimental	2022-04-09	Valid
N6110R	Williford Drury F Jr CHALLENGER II	Individual owner Mississippi	Experimental	2022-04-08	Valid
N8113Y	Adams Dale HORNET	Individual owner Georgia	Experimental	2022-02-22	Valid
N6964R	Quad City Ultralights CHALLENGER II	Individual owner Texas	Experimental	2021-12-09	Valid
N1701B	Maxair DRIFTER XP	Kedish Kirk Helena, Montana	Experimental	2021-12-06	Valid
N75185	Behrendt John P THUNDERGULL 2000	Individual owner Washington	Experimental	2021-10-29	Valid
N10342	Golden Circle TBIRD I	Individual owner New Mexico	Experimental	2021-10-28	Valid
N405AC	Campbell Arnold CHALLENGER 2	Individual owner Indiana	Experimental	2021-10-20	Valid
N682FS	Kolb Aircraft FIRESTAR II	Individual owner Pennsylvania	Experimental	2021-10-12	Valid
N2753	Moughan James J RANS S-5 COYOTE	Masterson Paul C Windsor, Missouri	Experimental	2021-09-22	Valid
N370BP	Rundall Dg/Kirkpatrick Dg CHALLENGER E LSS	Individual owner Virginia	Experimental	2021-09-08	Valid
N51722	Kolb Aircraft FIRESTAR II	Individual owner Alabama	Experimental	2021-08-28	Valid
N93106	Hladilek Anthony T F QUICK E	Individual owner Wisconsin	Experimental	2021-08-17	Valid
N7094T	Kolb FIRESTAR II	Individual owner New York	Experimental	2021-08-07	Valid
N7029N	Flightstar Sportplane SPYDER	Individual owner Mississippi	Experimental	2021-06-28	Valid
N2494X	Parham John B Iii FERGY II B	Individual owner Georgia	Experimental	2021-06-22	Valid
N5119V	Quad City Ultralight Acft Corp CHALLENGER II	Individual owner North Carolina	Experimental	2021-06-02	Valid
N3039G	Lindquist F R /Mcdonnell Tim R CHALLENGER II	Individual owner Ohio	Experimental	2021-05-25	Valid
N375HH	New Kolb Aircraft Co FIRESTAR II	Individual owner Washington	Experimental	2021-05-20	Valid
N899RD	Larry W Dunn QUAD CITY ACFT CHALL	Individual owner Missouri	Experimental	2021-05-12	Valid
N7065Y	Martin Helen Tabor RIDGE RUNNER	Individual owner California	Experimental	2021-05-07	Valid
N4145S	Strickland Benjamin F CHALLENGER II	Individual owner Alabama	Experimental	2021-05-05	Valid
N3094K	Reed Robert A CHALLENGER I CWS	Individual owner Texas	Experimental	2021-05-03	Valid
N21PR	Reneberg-Peck QUICKIE	Individual owner Kansas	Experimental	2021-04-27	Valid
N8507V	Holland Henry L TITAN A/C TORNADO I	Individual owner Arkansas	Experimental	2021-04-24	Valid
N7UL	Addison Keith E QUICKSILVER SPRINTII	Taylor Aviation INC North Aurora, Illinois	Experimental	2021-04-23	Valid
N7072Z	Alfred Keith SKY RAIDER II	Individual owner California	Experimental	2021-03-24	Valid
N7043P	New Kolb Aircraft Co FIRESTAR II	Individual owner Texas	Experimental	2021-03-23	Valid
N657SB	Near Thomas C CHALLENGER II	Individual owner Kansas	Experimental	2021-03-01	Valid
N748JB	Benton James H Jr CHALLENGER II	Individual owner Georgia	Experimental	2021-02-20	Valid
N6052E	Glover E R KOLB FIRESTAR II	Individual owner California	Experimental	2021-02-19	Valid
N898NT	Taylor Gregory S EXCALIBUR	Individual owner Ohio	Experimental	2021-01-25	Valid
N2710N	Eipper Acft Inc QUICKSILVER MF	Individual owner Oregon	Experimental	2021-01-23	Valid
N987Y	Hytek HURRICANE	Individual owner California	Experimental	2021-01-09	Valid
N2825N	Lockwood Leeza DRIFTER	Individual owner Wisconsin	Experimental	2021-01-06	Valid
N80422	Slipstream REVELATION	Individual owner Wisconsin	Experimental	2021-01-06	Valid
N34FS	Fasone Philip R FLIGHTSTAR IISC	Individual owner Georgia	Experimental	2020-12-21	Valid
N183SW	Whitley Scott CHALLENGER II	Individual owner Alabama	Experimental	2020-12-17	Valid
N6115Y	Davis Brent QUICKSILVER	Individual owner California	Experimental	2020-12-10	Valid
N2647T	Challenger SINGLE SEAT LW	Individual owner Kentucky	Experimental	2020-12-03	Valid
N348SM	Monacelli Russell MONACELLI CHI	Co-owned owner Wisconsin	Experimental	2020-10-22	Valid
N453MJ	Jarvis Michael C CGS HAWK SS ARROW	Individual owner Indiana	Experimental	2020-10-21	Valid
N829BH	Aeros Ltd SKYRANGER	Individual owner Maine	Light sport	2020-10-21	Valid
N9128Y	Dickert Chris K CHALLENGER II	Individual owner Indiana	Experimental	2020-09-23	Valid
N414LS	Stokes Leslie Ray CHALLENGER II	Individual owner Oklahoma	Experimental	2020-09-10	Valid
N510RA	Phantom Aeronautics PHANTOM X-1	Individual owner Tennessee	Experimental	2020-09-08	Valid
N3638D	Maler Carl J CHALLENGER II	Individual owner California	Experimental	2020-08-22	Valid
N148LS	Quad City Ultralight CHALLENGER II	Kuwait International Aircraft Leasing INC Wilmington, Delaware	Experimental	2020-08-15	Valid
N129AY	Yarberry Manuel CHALLENGER II	Individual owner New Hampshire	Experimental	2020-07-13	Valid
N53XY	Schwartz Kenneth G S17 STINGER	Individual owner California	Experimental	2020-07-06	Valid
N327SL	Flightstar 2-SC	Individual owner Pennsylvania	Experimental	2020-06-18	Valid
N3176G	Quicksilver GT-400	Individual owner Texas	Experimental	2020-06-08	Valid
N8109	Russell Haney H CHALLENGER II	Individual owner New Hampshire	Experimental	2020-05-15	Valid
N744DL	Loucks Barner D 1650R EROS	Individual owner Washington	Experimental	2020-03-02	Valid
N30PV	Vital Syd G QUICKSILVER GT 400	Individual owner Texas	Experimental	2020-02-12	Valid
N219CN	Quicksilver Mfg Co MXLII	Individual owner Puerto Rico	Experimental	2020-01-31	Valid
N8607E	Blake Robert E CHALLENGER 2	Pelikan Baye Aviation LLC Saint Charles, Missouri	Experimental	2020-01-27	Valid
N2480Y	Brown Benjamin C CHALLENGER II	Individual owner New Mexico	Experimental	2020-01-10	Valid
N827BA	Quad City Ultralight CHALLENGER II LSS	Individual owner Texas	Experimental	2019-12-16	Valid
N947BX	Bertling Courtney MXL-2	Individual owner Oregon	Experimental	2019-12-04	Valid
N1113W	Suarez R Murray RIDGE RUNNER III	Individual owner Vermont	Experimental	2019-10-29	Valid
N29990	Titan Aircraft TORNADO	Individual owner South Carolina	Experimental	2019-09-18	Valid
N8756V	Sensenig Vicki L T E A M HI-MAX 1700R	Individual owner New Mexico	Experimental	2019-09-18	Valid
N44152	Challenger 2PCWS	Individual owner Nebraska	Experimental	2019-09-10	Valid
N864RC	Quad City Ultralight Acft Corp CHALLENGER II	Individual owner South Carolina	Experimental	2019-08-28	Valid
N939WT	Thomas Wayne F EXCALIBUR II	Co-owned owner Nebraska	Experimental	2019-08-16	Valid
N4430A	Newsome Winfred T KOLB FIRESTAR	Individual owner Pennsylvania	Experimental	2019-07-24	Valid
N8507T	Paul Donald R CHINOOK PLUS II	Individual owner Minnesota	Experimental	2019-06-29	Valid
N6123E	Phantom Aircraft Co PHANTOM X-1	Individual owner New Jersey	Experimental	2019-06-25	Valid
N434LB	Brandt Leroy E BRANDT LEROY E 2PL	Individual owner North Carolina	Experimental	2019-05-30	Valid
N241PW	Pappas Chris A GT-400	Individual owner Alabama	Experimental	2019-04-29	Valid
N521DK	Koshinski David A AVENTURA HP	Signmaxx LLC Larksville, Pennsylvania	Experimental	2019-04-18	Valid
N459F	John R Fitt KOLB FIRESTAR	Individual owner California	Experimental	2019-04-05	Valid
N140JL	Loomis John C RANS S-14	Individual owner Oregon	Experimental	2019-02-23	Valid
N969EL	Leither Ernest L CHALLENGER II	Individual owner Iowa	Experimental	2019-01-31	Valid