Possible Clues:

• See 107-Across
• This might 7 down you if it's left inside
• Garage apparatus
• Start to rise and flit, crossword setter style
• Exalted spirits flit about Scottish sky
• That'll get you overhead over fifty feet
• Raise 51 feet
• An airfoil provides it
• Set up a digital process to do a little work
• Boost vertically, or boost from a store