Record keeping ORO.FTL.245: Do records required in ORO.FTL.245 have to reflect planned or actual FDP, DP and rest?
Planned rosters may differ substantially from achieved rosters.
In order to ensure appropriate oversight of FTL by the competent authority, operators need to maintain (for a period of 24 months) records of the actual values of flight times, FDP, rest periods and days free of all duties.
According to AMC1 ORO.FTL.110 (j) on operational robustness operators should establish and monitor performance indicators for operational robustness rosters.
This can only be done if operators keep records of both, planned and achieved rosters.