PLTDEVS FROM FERRY PERMIT ISSUED FOR SMT FERRY FLT.

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OUR CORPORATE ACFT WAS RECENTLY FOUND TO HAVE DEFECTIVE FLOAT VALVES IN ITS FUEL TANKS AND WAS THUS GNDED UNTIL NEW VALUES ARE AVAILABLE OR AN AIRWORTHINESS DIRECTIVE IS RECEIVED; WHICH WE HAVE BEEN TOLD TO EXPECT; WHICH WILL ALLOW OPS WITH DEFECTIVE VALVES IF HIGHER FUEL LEVELS ARE MAINTAINED. A DECISION WAS MADE BY COMPANY MGMNT TO FERRY THE ACFT HOME FROM OUR MAINT FACILITY AND A SPECIAL FLT PERMIT WAS OBTAINED FOR ME FROM THE FAA. I WAS INFORMED BY MY MAINT FACILITY THAT I HAD TO MAKE THE FLT ONLY WITHIN THE TIME PERIOD SPECIFIED; FLY ONLY THE RTE SPECIFIED; AND HAVE ONLY MYSELF ON BOARD. THEY FURTHER SPECIFIED CONDITIONS MUST BE 'VFR.' SINCE THE ACFT HAD NOT BEEN FLOWN FOR QUITE SOME TIME AND HAD MAJOR MAINT PERFORMED; I WAS VERY CAREFUL ON MY PREFLT AND FOUND A NUMBER OF THINGS THAT NEEDED TO BE CORRECTED PRIOR TO THE TRIP HOME. I ASKED THAT THEY BE TAKEN CARE OF PRIOR TO MY DEP. WHEN THE ACFT WAS FINALLY READY; THE DUSK WAS FAST APCHING. PART OF THE CRUISE PORTION OF THE FLT AND THE LNDG WERE THUS MADE AT 'NIGHT.' THE FLT WAS TOTALLY UNEVENTFUL. MAINT HAD PUT THE SPECIAL FLT PERMIT IN MY ACFT IN THE CLR POCKET FOR THIS PURPOSE AND MADE ME AWARE IT WAS THERE PRIOR TO THE FLT. IN ADDITION; THE LOGBOOK ENTRY REQUIRED FOR THIS PERMIT WAS MADE. IT WAS NOT UNTIL AFTER I LANDED THAT I DISCOVERED A SHEET STAPLED TO THE BACK OF THE SPECIAL FLT PERMIT THAT LISTED THE CONDITIONS REQUIRED FOR THE FLT INCLUDING THAT IT MUST BE MADE IN DAY VFR. I FEEL THAT MY INADVERTENT VIOLATION OF THIS CONDITION COULD HAVE BEEN AVOIDED IN ANY ONE OF SEVERAL WAYS. PLTS NEED TO BE TAUGHT ABOUT THE RESTRICTIONS ON SUCH PERMITS. CONDITIONS FOR SUCH FLTS SHOULD BE LISTED WHERE THEY ARE READILY AVAILABLE TO PLTS SUCH AS IN PART 91; NOT HIDDEN IN PART 21 TO WHICH FEW PLTS HAVE READY ACCESS. DIRECT CONTACT BTWN THE PLT AND THE FSDO WHERE THESE CONDITIONS WOULD HAVE BEEN REVIEWED WOULD ALSO HAVE PREVENTED THE PROB. WHILE THE FSDO DID PROVIDE THEM IN WRITTEN FORM; I WAS NOT AWARE OF THEIR EXISTENCE UNTIL TOO LATE.