So what is the conclusion? When we have dock maintenance (c-check), but at the very end of the duration, fault of a system was revealed. In the scinario, can we apply MEL to make A/C back to base? Should we consider the start point (date of finding) as a RTS sign-off date of the C-check? Any consultation is happy for me. Moreover, I wish to know if there is a publicated guidance for such scenario....