I don't think I could turn if I wanted to.
4 seconds sound clip from the Return to Oz movie soundboard.
You can hear this line at 00:59:59.162 in the Blu-ray version of the movie.
Quote context
[...]
- How do we know where to land? It's awful dark down there.
- The Nome King's mountain was straight ahead. I think.
- The best thing to do is to keep flying until dawn. Then maybe we can find a safe place to land.
- Oh, Mr. Gump? Can you just keep flying straight ahead?
- I don't think I could turn if I wanted to.
- Why don't we just fly back to Kansas?
[...]