The most common use for speed tape that I`ve seen is to cover PRC
( a sealant) that hasn`t quite dried before departure. When replacing many panels, PRC
is used to seal the edges, and until it is cured, the airflow can spread it around, making a mess. Put a thin layer of DC4 (silicon) on top of the PRC
, then tape over top, and off you go. It looks a little funny, but it works. I`ve seen passengers looking at a windshield that had this treatment, and wonder if the tape was holding the window in! Use the handle of a screwdriver to really work out all the wrinkles on the tape, especially the leading edge, and it`ll stick no problem.