MD80 and MD90 completely different schedules - MD80 MSG 2 & MSG Scheds. - MD90 MSG 3 Sched. only I think...
MD80 MSG 2 & MSG 3 OAMP sched. periods are the same;
A 450H
C 3,500H
SSI 15,000H
SSI 30,000H
plus seperate CPCP, Aging Acft and AD's
MD90 OAMP MSG 3;
A+ZIP 450H
C+ZIP 3,500H
SSI 45 months
SSI 60 months
SSI 90 months
SSI 120 months
plus seperate AD's