Tech stop in Azors wouldn't work for us as from there to Barbados is MNPS airspace and we're not approved on commercial AOC. Climbing above FL420 is not an option as to heavy and above certified ceiling for CL604 also flying low under MNPS for obvious fuel burn reasons not an option either. How do other companies do this when they are flying with the owner but the aircraft is operated on a AOC? My understanding that once Aircraft on AOC always operated commercially not privately, no matter if owner fly's or not