I'm at forty thousand. Air speed six hundred - she's running fine.
7 seconds sound clip from the Dimension X - The Outer Limit by Graham Doar classic radio play.
You can hear this line at 00:05:04 in the radio play.
Quote context
[...]
- Hey, what's holding us up, Hank? Something on your mind?
- No, no. it's nothing, Steve. I just wanted to say... good luck.
- Clear for takeoff, Charlie? Okay - give him the light.
- All right, Steve, I'm reading you clear.
- I'm at forty thousand. Air speed six hundred - she's running fine.
- The soundproofing works. There's a third degree waver in the AGY pressure.
- Check.
- Fifty thousand now... cutting out the port jet. Now the starboard.
- I'm off jets... airspeed dropping... Opening the rocket selects.
[...]