What is the flight time limitation for commercial air transport operation in Europe?
For EASA, flight times and duty periods are limited (PDF p.25) to:


(a) The total duty periods to which a crew member is assigned shall not exceed:
  (1) 60 duty hours in any 7 consecutive days;
  (2) 190 duty hours in any 28 consecutive days.
(b) The total flight time of the flights on which an individual crew member
    is assigned as an operating crew member shall not exceed:
  (1) 100 flight hours in any 28 consecutive days;
  (2) 900 flight hours in any calendar year;
  (3) 1000 flight hours in any 12 consecutive calendar months.