After attachment, it fires a shaped head into the skin of the aircraft followed by auditory or visual disrupting agents. Incredibly high-pitched sound, or gas, or both.

13 seconds sound clip from Airwolf (1984) - Bite of the Jackal (S1.E3) action military drama television series.

You can hear this line at 00:23:29.337 in the Blu-ray version of the TV Series.

Quote context

[...]

- Comes back? But what if he does not come back, huh? I mean, by now he knows it's a trap.

- He also knows that I'm not wining and dining his friend out there.

- And Santini's passenger, that was a wrinkle I didn't expect, but it's one which I believe might help us.

- If you couldn't take him today, what makes you think you can do it tomorrow?

- I didn't get a chance today to use the Leech.

- Leech?

- Air-to-air missile, of the Sidewinder variety. It's called the Leech because instead of exploding on impact, it attaches itself.

- Santa Madre!

- After attachment, it fires a shaped head into the skin of the aircraft followed by auditory or visual disrupting agents. Incredibly high-pitched sound, or gas, or both.

- The gas is not lethal, with a three-minute leeway before unconsciousness, giving Hawke enough time to decide between a crack-up and death or an emergency landing.

- Where do you think this Hawke is now?

- Well, he'll need to repair the rotor.

- There are salt and mining camps scattered all through this area.

- I got to set it down.

- You don't know what's down there.

- I've got no choice.

[...]