CORP FLC FERRIES ACFT WITHOUT PERMIT.

Narrative

AFTER LNDG OUR SMT AT DTW FOLLOWING A RAPID DECOMPRESSION; CAUSED BY A BLOWN OUT CABIN WINDOW; I IMMEDIATELY BEGAN STEPS TO OBTAIN APPROPRIATE MAINT. I FIRST CALLED OUR PRINCIPAL MAINT SHOP; TO OBTAIN ASSISTANCE. THE MAINT MGR ADVISED THAT PARTS WERE READILY AVAILABLE AND THAT A FACTORY AUTHORIZED MAINT FACILITY WAS LOCATED AT PTK AND RECOMMENDED THAT THE AIRPLANE BE TAKEN THERE FOR NECESSARY MAINT. I THEN CALLED REPAIR FACILITY AND SPOKE WITH THE MAINT DIRECTOR THERE. HE ADVISED THAT HE HAD THE NECESSARY PARTS AND LABOR FORCE TO REPAIR THE ACFT. I ASKED HIM WHAT WAS NECESSARY TO GET THE ACFT FROM DTW TO PTK. HE INSTRUCTED ME TO TAPE THE WINDOW WITH 'HIGH SPD TAPE'; FLY THE ACFT UNPRESSURIZED; AND FLY THE ACFT AT RELATIVELY LOW AIRSPD. I ASKED IF ANYTHING ELSE WAS NECESSARY AND HE RESPONDED THAT NOTHING ELSE WAS NECESSARY. THE ACFT WAS THEN FLOWN TO PTK AS PER HIS INSTRUCTIONS. IT WAS ON THE FOLLOWING DAY THAT 2 FAA PERSONNEL INFORMED ME OF A POSSIBLE VIOLATION FOR NOT OBTAINING A FERRY PERMIT. THE NEED FOR A FERRY PERMIT DID NOT OCCUR TO ME AS OUR PRINCIPAL MAINT BASE RECOMMENDED FLYING THE ACFT TO PTK AND DID NOT MENTION A REQUIREMENT TO OBTAIN A PERMIT. STEPS TO GET THE AIRPLANE REPAIRED WERE STARTED IMMEDIATELY UPON LNDG. I WAS STILL EXCITED FROM THE DECOMPRESSION EVENT. ALSO; I HAD BEEN UP SINCE EARLY MORNING AND HAD FLOWN A PREVIOUS MISSION THAT MORNING AND I WAS FATIGUED.