The Austrian Airlines pilots are on strike starting this afternoon. Many flights are done with Lauda Air Equipment. For example the LHR flight are in the moment all planned with Boeing 737's the late one is planned with a 737-800 Winglet. The flight to Paris in the afternoon OS 417 is planned to be done with the Wind Jet A320.
This might give some photo oportunites for you guys. Check http://www.viennaairport.com/start.cfm for more information.