The J-77 "Event Horizon" was a model of a starfighter sublight engine built by Novaldex. It was used aboard the RZ-1 A-wing interceptors. The J-77 included dual MPS Bpr-99 fusion reactors that powered the engines.
- Star Wars: Episode VI Return of the Jedi (First appearance)
- Poe Dameron: Flight Log
- Star Wars: The Visual Encyclopedia (First identified as J-77 "Event Horizon" engine)
- Star Wars: A-Wing Deluxe Book and 3D Wood Model (First identified as J-77 "Event Horizon" sublight engine)
- Rebel Starfighters Owners' Workshop Manual (as J-77 "Event Horizon" sublight engine)