"FLT" is a standard abbreviation for Flight . The term could relate to technical data or simulations concerning flight return or reentry trajectories.
It may refer to a specific film, soundtrack, or piece of media with "Retour" (French for "Return") in the title that has been split into multiple archive parts.
Could you please clarify if you are looking for information on a by a specific group, or if you are researching aviation/flight-related technical documentation? A CLOSED-FORM SOLUTION TO LIFTING REENTRY - DTIC