Captain, I'm not sure how long the engines will remain operable against that much force when we turn back.

6 seconds sound clip from the The Black Hole (1979) movie soundboard.

You can hear this line at 00:10:08.420 in the Blu-ray version of the movie.

Quote context

[...]

- Gravity pull?

- Point zero, 2-4-5-0 and rising.

- Put us in an escape attitude of 8-5 degrees. Cut power by two-thirds.

- 8-5 degrees. She's bucking like a bronco.

- Gravity?

- Point 4-6-9-6-0, still climbing.

- Switching to manual.

- Captain, I'm not sure how long the engines will remain operable against that much force when we turn back.

- Alex, gravity's close to maximum. We can afford one pass and then we're gonna have to get the hell out.

- Zero gravity.

- Cut the power.

- Smooth as glass.

- It's like being in the eye of a hurricane. What happened?

- Natural phenomenon. Or something from that ship.

[...]