it all depends o what is "approved" or not by the authorities over there in Philipines
the book's might say 22,8t or even 23 tons for take of weight (like the table in the QRH for the heviest takeoff weight).
the point here its what legally been approved by the law
in this type of issues you might wanna become a lawyer for 30 minutes
& find out really whats been laid down on the rule book
never mind the FOS..............'cause at the end someone from the airline or elsewhere was given some figures and loaded them in
i dont know cebu fleet, but does it come with the "boost" option ?
which engines they have 127F or M ?