Possible Clues:

• The Spirit of St. Louis, e.g.
• Two-dimensional extent
• Aircraft - level surface - carpenter's tool
• Aircraft - tool
• That will make for a smooth landing
• Airbus product
• "Leaving on a Jet ___"
• 25 Across workplace
• Tree that can reach a great height
• Vehicle that will fly into a mountain if you switch your phone on below cruising altitude