
1) Motorized hang glider
Found on
https://www.crosswordclues.com/clue/ultralight

An aeronautical vehicle, operated for sport or recreational purposes, that does not require FAA registration, an airworthiness certificate, or pilot certification. Primarily single-occupant vehicles, although some two-place vehicles are authorized for training purposes. Operation of an ultralight vehicle in certain airspaces requires authorization ...
Found on
http://www.aerofiles.com/glossary.html

Lighter than standard fishing rod and/or tackle.
Found on
http://www.azgfd.gov/h_f/fishing_glossary.shtml

A small, powered aircraft which is extremely light(254 lbs or Less empty)and seats only one occupant. Ultralights are popular among hobbyists for being cost-effective and having lenient regulation. Ultralight type aircraft are generally heavier and can seat more than one occupant.
Found on
https://en.wiktionary.org/wiki/Appendix:Glossary_of_aviation,_aerospace,_an

An aeronautical vehicle, operated for sport or recreational purposes that does not require FAA registration, an airworthiness certificate, or pilot certification. Primarily single-occupant vehicles, although some two-place vehicles are authorized for training purposes. Operation of an ultralight vehicle in certain airspaces requires authorization f...
Found on
https://www.encyclo.co.uk/local/22323

extremely lightweight in comparison with others of its kind: a car with an ultralight engine.
Found on
https://www.infoplease.com/dictionary/ultralight
No exact match found.