Maybe some useful facts regarding the above discussion:
Operational Data from A350 fleet per 28.12.2015basic data from: FR24, Radarbox24, Planefinder and this Forum
Airlines:
Qatar Airways,
Vietnam Airlines and
FinnairBlock flight time [hh:mm]…….……………………………………………………..16593:21
Aircraft Days operational…………………………………………………………….1254 (begining with delivery or first dataset)
Flights………………………………………………………………………………………….2668
Flight/day…………………………………………………………………………………….2,4
Flight hours/day [hh:mm]…….………………..…………………………………..13:02
Late arrival between 1h and 2h30min ……………………………………….50=> 1,87%
Late arrival 2h30min and more…………………………………………………….26=> 0,97%
Cancelled …………………………………………………………………………………….2
Diverted……………………………………………………………………………………….1
first dataset………………………………………………………………………………..
18.07.2015last dataset…………………………………………………………………………………
28.12.2015note: there is no information for the cause of delays