Rotax 503UL
24 aircraft on the U.S. register carry a Rotax 503UL engine, rated at about 52 horsepower. The Air Creation GTE is the model most often fitted with it (2 aircraft). The aircraft carrying it were built between 1992 and 2016.
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 503UL. FAA spelling: 503UL.
Fitted to model families
Air Creation GTE2Airborne Windsports REDBACK1Bush Bryan CHALLENGER II1Carlos TUKAN1Coester Robert R TITAN TORNADO1Cqs Inc KOLB TWINSTAR1Cudaback Ronald M RANS S-41Dean John W CHALLENGER CLIPPED W1Geoffrey R West LS 103B1Gibbo Gear BB503 TRAINER TRIKE1Little Keene H CHALLENGER II1M Squared BREEZE 21
Model families, as a table
| aircraft | |
|---|---|
| Air Creation GTE | 2 |
| Airborne Windsports REDBACK | 1 |
| Bush Bryan CHALLENGER II | 1 |
| Carlos TUKAN | 1 |
| Coester Robert R TITAN TORNADO | 1 |
| Cqs Inc KOLB TWINSTAR | 1 |
| Cudaback Ronald M RANS S-4 | 1 |
| Dean John W CHALLENGER CLIPPED W | 1 |
| Geoffrey R West LS 103B | 1 |
| Gibbo Gear BB503 TRAINER TRIKE | 1 |
| Little Keene H CHALLENGER II | 1 |
| M Squared BREEZE 2 | 1 |
Air Creation GTE · Airborne Windsports REDBACK · Bush Bryan CHALLENGER II · Carlos TUKAN · Coester Robert R TITAN TORNADO · Cqs Inc KOLB TWINSTAR · Cudaback Ronald M RANS S-4 · Dean John W CHALLENGER CLIPPED W · Geoffrey R West LS 103B · Gibbo Gear BB503 TRAINER TRIKE
Where they are owner's state
Kind of aircraft
By kind, as a table
| aircraft | share | |
|---|---|---|
| Piston singles | 13 | 54% |
| Weight-shift and powered parachutes | 8 | 33% |
| Gliders | 3 | 12% |
Connections how this engine series links to the rest of the register
Fitted to
- Air Creation GTE 2 with this engine series
- North Wing APACHE 1 with this engine series
- Pipistrel TAURUS 1 with this engine series
- Quad City Ultralight Acft Corp CHALLENGER II 1 with this engine series
- Quicksilver GT-400 1 with this engine series
Where they are
- California 3 of these aircraft
- Texas 2 of these aircraft
- New York 2 of these aircraft
- Maryland 2 of these aircraft
- Arizona 2 of these aircraft
Analytics
The whole map of how records connect · these connections as data: /graph/engine/rotax-503ul.json.
Aircraft newest certificates first · 24
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N4473G | Quicksilver GT-400 |
Fixed-wing, single engine | Individual owner Florida |
Experimental | 2024-02-08 | ValidFAA registration status code V: Valid registration. All codes |
| N9113T | Dean John W CHALLENGER CLIPPED W |
Fixed-wing, single engine | Individual owner Maryland |
Experimental | 2023-09-18 | ValidFAA registration status code V: Valid registration. All codes |
| N2657E | North Wing APACHE |
Weight-shift control | Individual owner California |
Light sport | 2023-05-18 | ValidFAA registration status code V: Valid registration. All codes |
| N333RC | Coester Robert R TITAN TORNADO |
Fixed-wing, single engine | Individual owner Arizona |
Experimental | 2023-03-31 | ValidFAA registration status code V: Valid registration. All codes |
| N61086 | Quad City Ultralight Acft Corp CHALLENGER II |
Fixed-wing, single engine | Individual owner California |
Experimental | 2023-03-30 | ValidFAA registration status code V: Valid registration. All codes |
| N4854K | Quad City Ultralight CHALLENGER II LW |
Fixed-wing, single engine | Individual owner Arkansas |
Experimental | 2023-01-23 | ValidFAA registration status code V: Valid registration. All codes |
| N2097K | Solo Wings AQUILLA |
Weight-shift control | Individual owner Texas |
Experimental | 2022-02-09 | ValidFAA registration status code V: Valid registration. All codes |
| N9066J | Air Creation GTE |
Weight-shift control | Individual owner Colorado |
Experimental | 2020-08-15 | ValidFAA registration status code V: Valid registration. All codes |
| N107SM | Test Spol Sro TST-14M BONUS |
Glider | Individual owner Maryland |
Light sport | 2019-05-08 | ValidFAA registration status code V: Valid registration. All codes |
| N923KP | Pipistrel TAURUS |
Electric airplane | Individual owner California |
Light sport | 2019-01-16 | ValidFAA registration status code V: Valid registration. All codes |
| N168RC | Cudaback Ronald M RANS S-4 |
Fixed-wing, single engine | Individual owner Nebraska |
Experimental | 2018-02-28 | ValidFAA registration status code V: Valid registration. All codes |
| N702KW | Geoffrey R West LS 103B |
Fixed-wing, single engine | Individual owner New Mexico |
Experimental | 2018-02-06 | ValidFAA registration status code V: Valid registration. All codes |
| N3840G | Little Keene H CHALLENGER II |
Fixed-wing, single engine | Individual owner Idaho |
Experimental | 2017-03-14 | ValidFAA registration status code V: Valid registration. All codes |
| N2672A | Cqs Inc KOLB TWINSTAR |
Fixed-wing, single engine | Individual owner Illinois |
Experimental | 2015-12-09 | ValidFAA registration status code V: Valid registration. All codes |
| N368MP | Provenzano Anthony R CHALLENGER II LSS |
Fixed-wing, single engine | Individual owner New York |
Experimental | 2015-06-29 | ValidFAA registration status code V: Valid registration. All codes |
| N546FL | Gibbo Gear BB503 TRAINER TRIKE |
Weight-shift control | Individual owner New York |
Experimental | 2009-02-24 | ValidFAA registration status code V: Valid registration. All codes |
| N165ZX | M Squared BREEZE 2 |
Fixed-wing, single engine | Individual owner Ohio |
Experimental | 2008-02-01 | ValidFAA registration status code V: Valid registration. All codes |
| N42CE | Pipistrel TAURUS GLIDER |
Electric airplane | Individual owner Louisiana |
Experimental | 2007-11-21 | ValidFAA registration status code V: Valid registration. All codes |
| N503WT | Airborne Windsports REDBACK |
Weight-shift control | Individual owner Texas |
Experimental | 2007-06-13 | ValidFAA registration status code V: Valid registration. All codes |
| N702SW | Quicksilver Enterprises Inc SPRINT II |
Fixed-wing, single engine | Individual owner Nevada |
Experimental | 2007-05-29 | ValidFAA registration status code V: Valid registration. All codes |
| N3165W | Carlos TUKAN |
Weight-shift control | Individual owner New Jersey |
Experimental | 2007-02-16 | ValidFAA registration status code V: Valid registration. All codes |
| N9146Z | Air Creation GTE |
Weight-shift control | Individual owner Arizona |
Experimental | 2006-08-01 | ValidFAA registration status code V: Valid registration. All codes |
| N17XD | Pegasus QUANTUM SUPERSPORT |
Weight-shift control | Individual owner Indiana |
Experimental | 2006-07-26 | ValidFAA registration status code V: Valid registration. All codes |
| N5025V | Bush Bryan CHALLENGER II |
Fixed-wing, single engine | Individual owner Iowa |
Experimental | 2006-04-06 | 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 23, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.