This quest was marked obsolete by Blizzard and cannot be obtained or completed.
Speak with Master Mechanic Castpipe in Ironforge.
Master Mechanic Castpipe in Ironforge has need of adventurers! He's organizing bands to reenter Gnomeregan on a data retrieval mission of top security and importance.
Castpipe might not be a member of the Enlightened Assembly of Arcanology, Alchemy and Engineering Sciences like I am, but he's still a smart gnome so if he thinks it's important, then by my calculations there's an eighty-four percent probability that it really is important!