We must be past the hills.
3 seconds sound clip from the The High and the Mighty (1954) movie soundboard.
You can hear this line at 02:14:57 in the DVD version of the movie.
Quote context
[...]
- Remember those radio towers.
- Stay on course. Don't descend any more.
- Thanks. We're trying not to.
- 400.
- 4-2-0, this is San Francisco towers.
- Ceiling, 300 feet. Visibility, one mile. Wind, west northwest. 20 to 25. Over.
[...]