Marp, it would help if there was some further `chat` to place the wording into a context; example, it could mean a heading check on the compasses whilst backtracking RW15 for T/O; It might also be a prompted transmission to ATC as well,or refer to a tail number as callsign,or possibly a last weight check or possibly ,if it`s a DC4,maybe a safety speed,or the heading to depart on or right turn to after T/O. A `snippet` is meaningless unless one has a bigger picture...