Jurgen,
Hello........I fly mostly domestic routes out of DTW with an occasional trip to Mexico or Canada. With regard to missions.....right off the bat, the River Visual approach to KDCA rwy19 comes to mind. We manually enter the waypoints off the chart into the MCDU which gives us a usable vertical profile while we fly visually down the Potomac river. I'ts a blast!! Also, since the flight most often originates from DTW, there is not alot of time to plan, set up and brief the approach. Energy management is critical as one is usually vectored in high, close and often somewhat fast with little or no room to slow down, configure the airplane and fly the approach. Very easy to get behind and very difficult to catch up if you do and a missed approach often the result of poor planning and/or poor airmanship. Some others come to mind as well; Mexico City can be a challenge and there are some approaches into mountainous airfields that are also lot's of fun...... and they are all visual approaches which are the most difficult to fly in the Airbus. With ILS approaches, all you have to do is plug in the numbers and let the automation do the rest. Visuals are another thing and can really be a challenge......one has to use all the tricks one may have stashed up his sleeve from years of experience and then maybe, in the heat of battle, invent some new ones. Anyway, thanks for the note and I thought I'd toss out an idea or two for you.
Best regards and Merry Christmas
John