If everything will be fine for the PCs as long as one particular thing doesn't happen... of course it should happen.

This is not to say it should necessarily be a complete disaster. It should just be a challenging situation, as opposed to everything working perfectly and there being no adventure at all.

Transcript

{Rebel hangar}
Major Derlin: We should send a platoon to defend the Clabburn Range.
Captain Valdez: Don't be an idiot.
{cut to Chewie and Han working on the Falcon}
Chewbacca: Han, my dear chap, the ship is evidently in a state of unreadiness for such a hasty departure.
Chewbacca: I've had to reboot the computer five times today already.
[SFX]: weld weld
Han: It'll be fine. As long as the hyperdrive—
[SFX]: Boom!
[SFX]: Zzitz!
[SFX]: Kaboom!
Chewbacca: It's the Millennium Falcon! With our very special guest star, a non-functional hyperdrive! Yaaaaayyyy!!