Aircraft overview

The Ulbi Wild Thing WT01 is a German ultralight aircraft from Ulbi, built for the light sport and microlight end of the used aircraft market. It is a compact, single-seat, fixed-wing design intended for private recreational flying rather than transport or training operations. The WT01 matters to buyers because it sits in a niche where acquisition cost, simple systems and low operating weight are often more important than payload or cabin comfort. Production was limited compared with mainstream ultralights, so aircraft history and documentation are especially important.

Performance & specifications

Published performance data for the Ulbi Wild Thing WT01 is not as standardized as for larger certified aircraft, and figures can vary by registration category, engine installation, propeller and national operating limits. Buyers should verify cruise speed, range, useful load and ceiling against the aircraft’s own flight manual, weight and balance report and current operating permit. The type is generally associated with light Rotax piston powerplants and a simple fixed landing gear configuration. As with many ultralights, real-world range is driven by fuel capacity, engine fit, propeller choice and reserve policy rather than by a single factory figure.

Cabin & avionics

The WT01 is a one-seat aircraft, so it is best viewed as a personal sport aircraft rather than a touring platform. Cabin and cockpit fit can differ between examples, particularly where owner modifications have been approved under local ultralight rules. Expect straightforward controls, limited baggage provision and a pilot environment focused on weight saving and direct handling. Avionics are normally simple: basic flight instruments, engine monitoring and a radio or transponder where required. Integrated suites such as Garmin Perspective or Garmin G1000 are not typical for this aircraft class.

Buying & value

For used WT01 buyers, condition and paperwork usually matter more than nominal specification. Review the airframe logbooks, engine hours, propeller history, maintenance sign-offs, repair records and evidence of compliance with local ultralight requirements. Inspect fabric or composite surfaces as applicable, control linkages, landing gear attachments, fuel system condition and engine installation quality. Common value factors include Rotax engine model and time remaining, radio and transponder fit, trailerability or storage history, and the completeness of manuals and registration documents. In the used market, the Ulbi Wild Thing WT01 is positioned as a specialized personal ultralight, appealing to buyers who prioritize simplicity and low running costs over payload, speed or cross-country comfort.