Crossword puzzle clue "starting point for a flight test"

Starting point for a flight test?

Space flight's starting point

Starting point for an annual flight

Starting point of a story where the ending point is, I guess, you're wearing riches

Starting a project ... and what the letters between the starting and ending pairs of letters in each starred answer are doing?

Epic poem starting with the flight from Troy

Last test before starting some advanced deg. programs

Flight school test