Swingy, Welcome to Prunne. We had Interim o2 on the Skyvan quite a while back used with the HL versons of GQ360. I had a devils own job with the MAR for Skyvan para when we moved responsibility from DPA into SMG/DLO/DE&S. would have been far easier had we adopted CAP660 for certification. All this was pre the MAA. I have been away from it all now for a few years. I hope it all works out for you. Limit exposure to risk by only subjecting those who have a real war role to jump.