Must've missed something in the Airport

I'm in the room with the Airship where Random keeps saying "that's a nice airship"...or something similar. The gates below me are closed.....what did I miss? Oh wait....this is the place that has the one switch you're not supposed to turn on right? I haven't even found that room yet I just busted thru the airport and did the minimal to beat it the first time....this is probably why the gate is closed?