The register · data as of October 7, 2026

Aircraft with Rotax 503 DCDI engines built in the 2000s

247 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
N18VE	M-Squared Aircraft BREESE 2	Sky Knights Flight Club Thousand Oaks, California	Experimental	2017-09-28	Valid
N9957H	Hilton David L AVID AIRCRAFT MODL B	Individual owner North Carolina	Experimental	2017-08-24	Valid
N25686	Tackabury Susan M CHALLENGER II	Individual owner Illinois	Experimental	2017-08-04	Valid
N8608Y	Mccallister Shawn CHALLENGER 1	Individual owner North Carolina	Experimental	2017-07-18	Valid
N522PE	Quad City Ultralight Acft Corp CHALLENGER II	Individual owner Montana	Experimental	2017-06-16	Valid
N929YE	Kolb KOLB MARK II	Individual owner Alabama	Experimental	2017-06-13	Valid
N31219	Britt George A FERGY F-11B	Individual owner Alabama	Experimental	2017-05-02	Valid
N103HK	Paulus Stephen J SINGLE SEAT CLASSIC	Individual owner Tennessee	Experimental	2017-04-18	Valid
N2534C	Quicksilver MXL SPORT II	Individual owner Texas	Experimental	2016-12-30	Valid
N967BC	Quad City CHALLENGER II	Individual owner New York	Experimental	2016-08-25	Valid
N1847	Airborne REDBACK	Individual owner Washington	Experimental	2016-08-16	Valid
N3518T	Aman Gary A KOLB FS-2	Individual owner Arizona	Experimental	2016-08-15	Valid
N2543T	Reed James W CHALLENGER II	Individual owner Missouri	Experimental	2016-08-11	Valid
N52PV	Custer George D SP 103	Individual owner Washington	Experimental	2016-08-11	Valid
N372TF	Friesz Roger CHALLENGER II	Co-owned owner Washington	Experimental	2016-07-18	Valid
N503DB	Quad City Ultralights CHALLENGER II	Individual owner Florida	Experimental	2016-06-09	Valid
N919KH	Detloff Dennis A D-1	Individual owner Washington	Experimental	2016-02-24	Valid
N503AK	Antares MA-33	Individual owner Alaska	Experimental	2016-02-04	Valid
N331RT	Tyler Robin A CHALLENGER II	Individual owner Alabama	Experimental	2016-01-22	Valid
N64326	Moriarity Duane A CHALLENGER II	Individual owner Wisconsin	Experimental	2015-10-01	Valid
N56345	Pegasus QUANTUM503SUPERSPORT	Individual owner California	Experimental	2015-09-17	Valid
N876SR	Rager Steven W CHALLENGER II STAND	Individual owner Kentucky	Experimental	2015-09-03	Valid
N62CP	Rainbow Ltd AEROTRIKE SAFARI	Individual owner Nevada	Experimental	2015-08-17	Valid
N5050U	Challenger Corp CHALLENGER II	Individual owner Alabama	Experimental	2015-08-06	Valid
N65QC	Lewis Robert A CHALLENGER II	Individual owner Virginia	Experimental	2015-07-23	Valid
N35135	Baldwin Greg L FLIGHTSTAR 1	Individual owner Oklahoma	Experimental	2015-05-21	Valid
N650G	Air Creation GTE	Individual owner Arizona	Experimental	2015-05-04	Valid
N75444	Air Creation RACER 503SL	Individual owner California	Experimental	2015-04-01	Valid
N134E	U-Fly-It Light Sport Acft Llc CHALLENGER II	Individual owner Arkansas	Experimental	2015-02-11	Valid
N6153	Lovel Richard L CHALLENGER 1	Individual owner Florida	Experimental	2014-12-04	Valid
N5664L	Quicksilver MX SPORT	Individual owner Wisconsin	Experimental	2014-11-18	Valid
N65083	Dishon P James EXCALIBUR	Individual owner Arkansas	Experimental	2014-10-31	Valid
N51431	New Kolb Co FIRE STAR II	Individual owner Colorado	Experimental	2014-10-22	Valid
N56CR	Redden Clifton M SKYRAIDER	Individual owner Kentucky	Experimental	2014-08-04	Valid
N95352	Steffes Dale CHALLENGER II	Individual owner Pennsylvania	Experimental	2014-07-31	Valid
N1758C	Hill Merlin A CHALLENGER II	Individual owner Wisconsin	Experimental	2014-07-29	Valid
N28LN	Norem Lawrence R CHALLENGER II	Individual owner Wisconsin	Experimental	2014-06-30	Valid
N124ZX	Harmenings High Flyers DELUXE	Individual owner Texas	Experimental	2014-06-06	Valid
N191SC	Six Chuter Inc LEGEND P103	Individual owner Oregon	Light sport	2014-06-03	Valid
N61515	Quad City Ultralight Acft Corp CHALLENGER II	Individual owner Tennessee	Experimental	2014-05-05	Valid
N4877E	Brogdon George H HI-MAX 1700R	Individual owner California	Experimental	2014-04-10	Valid
N75390	Kolb FIRESTAR II	Individual owner Alabama	Experimental	2014-03-11	Valid
N8029U	Crocker H L/Bura D CHALLENGER II	Individual owner New Jersey	Experimental	2014-03-07	Valid
N125WD	Quad City Ultralight CHALLENGER II	Individual owner Florida	Experimental	2014-02-04	Valid
N630PH	Cosmos PHASE II	Individual owner Nevada	Experimental	2013-12-11	Valid
N2812	Chicco Miguel E QUICKSILVER SPORT II	Sky Knights Flight Club Thousand Oaks, California	Experimental	2013-09-26	Valid
N4750	Harmening High Flyer 503 DELUXE	Individual owner Maine	Experimental	2013-08-26	Valid
N6116Z	Culver Steven L FERGUSON F2B	Individual owner Wisconsin	Experimental	2013-06-18	Valid
N35154	Titan TORNADO	Individual owner Iowa	Experimental	2013-05-10	Valid
N9092N	Quicksilver MXL II SPORT	Co-owned owner South Dakota	Experimental	2013-03-29	Valid
N54EK	Pegasus Aviation QUANTUM 15	Individual owner Mississippi	Experimental	2012-11-28	Valid
N667TF	Anseeuw Brian J CHALLENGER II	Individual owner Iowa	Experimental	2012-09-21	Valid
N169A	New Kolb Aircraft Co FIRESTAR II	Individual owner New York	Experimental	2012-09-18	Valid
N3284S	Powrachute Corp SKY RASCAL	Individual owner Utah	Experimental	2012-02-22	Valid
N56920	Kolb FIRESTAR II	Individual owner Mississippi	Experimental	2011-07-12	Valid
N511GP	Cgs HAWK PLUS	Individual owner Nebraska	Experimental	2011-02-09	Valid
N503GC	Crone Glenn F CHALLENGER II	Individual owner Florida	Experimental	2010-12-03	Valid
N643RP	Purvis Ronald E RANS S-4 COYOTE	Individual owner Minnesota	Experimental	2010-04-30	Valid
N93331	Hickey Jerry E SLINGSHOT	Individual owner Kansas	Experimental	2009-09-08	Valid
N9546J	M-Squared Aircraft BREESE	Individual owner Mississippi	Experimental	2009-08-28	Valid
N609GP	Mcnulty Gary J CHALLENGER II	Individual owner Washington	Experimental	2008-10-16	Valid
N774DR	Brown Bill L PIPISTREL SPIDER TRI	Individual owner Texas	Experimental	2008-08-14	Valid
N217BE	Eves Bryan E HAWK ARROW II	Individual owner Ohio	Experimental	2008-08-07	Valid
N503FC	Soma GYROCOPTER SGL SEAT	Individual owner Florida	Experimental	2008-07-30	Valid
N800LW	Wilson Leslie BENTLY	Individual owner Mississippi	Experimental	2008-07-23	Valid
N71703	Stoner Richard E CHALLENGER II	Individual owner Florida	Experimental	2008-05-09	Valid
N605DH	Hall Dennis L CHALLENGER II	Luedders and Reed INC Pawnee City, Nebraska	Experimental	2008-03-05	Valid
N142KJ	Ems Kenneth R CHALLENGER II	Individual owner Mississippi	Experimental	2008-01-30	Valid
N110ZX	Hardesty Eugene P EXCALIBUR	Individual owner Wisconsin	Experimental	2008-01-18	Valid
N8607Z	Quicksilver SPRINT II	Individual owner Wisconsin	Experimental	2007-12-21	Valid
N4407G	Murray Mark J HURRICANE	Individual owner Georgia	Experimental	2007-12-20	Valid
N134PC	Harmenings High Flyer HIGH FLYER DELUXE	Individual owner New York	Experimental	2007-11-05	Valid
N4702T	Carlin David 6T-1004	Individual owner California	Experimental	2007-10-26	Valid
N56419	Berencsi Tibor C KOLB FIRESTAR I	Individual owner New Jersey	Experimental	2007-10-17	Valid
N3803V	Quicksilver SPRINT	Individual owner Mississippi	Experimental	2007-10-09	Valid
N2967A	Smith James G QUICKSILVER GT 400	Individual owner Texas	Experimental	2007-10-04	Valid
N441MS	Schumacher Michael CHALLENGER II	Individual owner Illinois	Experimental	2007-10-04	Valid
N5622J	Excalibur EXCALIBUR/EXPER	Individual owner New York	Experimental	2007-10-03	Valid
N152UL	North Wing Ultralight Products APACHE SPORT	Individual owner Oregon	Experimental	2007-09-28	Valid
N1284D	Sixchuter AC-SR-2	Individual owner Washington	Experimental	2007-09-27	Valid
N153JC	Aircraft Sales And Parts CHINOOK PLUS 2/A	Individual owner Michigan	Experimental	2007-09-25	Valid
N2145W	Antares MA-33	Individual owner Alaska	Experimental	2007-09-21	Valid
N3739V	Ford Bill CHALLENGER II	Individual owner Indiana	Experimental	2007-09-21	Valid
N5611V	Quad City CHALLENGER II	Individual owner Texas	Experimental	2007-09-19	Valid
N6173B	Northwing NAVAJO	Individual owner Alabama	Experimental	2007-09-18	Valid
N26346	Northwing APACHE TRIKE	Individual owner California	Experimental	2007-09-13	Valid
N817RS	Smith Ronald C CHALLENGER II	Individual owner Indiana	Experimental	2007-09-10	Valid
N197AB	Quad City Ultralight Acft Corp CHALLENGER II	Individual owner Nebraska	Experimental	2007-09-06	Valid
N4741G	Smith George E CHALLENGER II	Individual owner Oklahoma	Experimental	2007-09-05	Valid
N2587T	Loehle Aviation Inc SPORT PARASOL	Individual owner Virginia	Experimental	2007-08-29	Valid
N2617E	Destiny Powered Parachutes Llc DESTINY 2000	Individual owner Alabama	Experimental	2007-08-29	Valid
N503MS	Kolb Aircraft FIRESTAR II	Individual owner Tennessee	Experimental	2007-08-29	Valid
N179RD	Dooley Rhett A TUKAN	Individual owner Colorado	Experimental	2007-08-27	Valid
N1780C	Earthstar Acft Inc JD	Individual owner Oregon	Experimental	2007-08-24	Valid
N197A	Harvey John A J&J TUKAN TRIKE	Individual owner Tennessee	Experimental	2007-08-24	Valid
N2157	J&J Ultralights SEA WING	Individual owner Illinois	Experimental	2007-08-24	Valid
N35234	Airborne Windsports Pty Ltd EDGE X	Individual owner New Hampshire	Experimental	2007-08-22	Valid
N1689	Cosmos BISON	Individual owner Washington	Experimental	2007-08-21	Valid
N3064L	Pegasus QUANTUM 503 SPORT	Individual owner Georgia	Experimental	2007-08-17	Valid
N61529	Harmening HIGH FLYER	Individual owner Michigan	Experimental	2007-08-17	Valid