SKYWALKER, METAL - WEIRD CLANK

This's a Skywalker Sound sound effect probably created by Randy Thom or Ben Burtt for Star Wars: Episode V - The Empire Strikes Back (1980).

Movies

 * Cast Away (2000)
 * Forces of Nature (1999)
 * Forrest Gump (1994)
 * Madagascar 3: Europe's Most Wanted (2012)
 * Mars Attacks! (1996)
 * Species (1995)
 * Star Wars: Episode V - The Empire Strikes Back (1980)

Rides

 * Star Tours (2011) (Heard when the Snowspeeder is hit by AT-AT fire, just like in "The Empire Strikes Back")

Audio Samples
This sound is used many times in "The Empire Strikes Back". In "Return of the Jedi", the sound of the Death Star's reactor beginning to explode as it's shot by Lando or the explosion/flash during the line "I'm hit...!" are another good reference/source.

To reference the variant that's just the first half of the sound: "Cast Away", just when the jet crash sequence begins, after Chuck pulls a band-aid off.