The spawnable airplane can shoot it’s gun, and move backwards/side to side, but not forward for some reason.
i was just using the biplane in a launched session, no throttle at all just a slow cruise with airbrakes and boost.
No options for modifying fly speed or boost speed in editor is a bit sad.
@pringlepingel Thank you for your report! We would like to look into this further, would you be able to submit a bug report using the form available here? Fortnite Creative