After an hour on the ground at Waseca (see previous question), you decide that Minnesota is not the winter paradise you'd anticipated, and using your laptop you connect to DUATS for Iowa weather and NOTAMs. Snow showers have passed through Iowa leaving this NOTAM for Des Moines: "Des Moines IA [DSM]: January NOTAM #19 Runway 23 TAP MU 35/30/40 will be effective January 07th, 2004 at 05:00 AM CST (0401071100)" What in heck is a "TAP MU"?
If you enjoyed taking this interactive quiz and would like to see more like it, go to the AVweb Brainteaser page. And if you thought it was unfair, confusing, or a waste of time, we'd like you to tell us that, too. And if you have an idea for a subject that you think would make a good future Brainteaser quiz, be sure to let us know.