<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by peter42:
No idea - Z used to be Business, found today an old (before LH alligned to * booking codes) upgraded BP with Z on it.</font>
Seems to be Business, when checking seatmap at checkmytrip.com directly and entering "Z" for class service (via URL of the setmap) the C section will show up. If Z is not offered on that particular flight a message "seatmap not available" will be shown. The final question will be: what kind of fare will Z be ?