A CESSNA 340 WAS DISPATCHED WITH A CLEAN LOGBOOK BUT WAS GNDED AT TERMINATION DUE TO ZZZ2 FSDO LATE RPT OF REQUIRED FIX OF INSPECTION.

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DEPART ZZZ TO ZZZ1 TO PICK UP PART 135 PAX. DEPART 3V5 TO LND AND ARRIVE UNEVENTFULLY. COMPANY OFFICIAL CALLS TO NOTIFY ME THAT THE ACFT HAS BEEN DEEMED UNAIRWORTHY BY ZZZ2 FSDO. TURNS OUT THAT THE ACFT WAS INSPECTED; THE DAY PRIOR TO MY FLT; BY ZZZ3 FSDO PERSONNEL FOR THE PURPOSES OF APPROVING ITS PLACEMENT ON ANOTHER COMPANY'S PART 135 CERTIFICATE. THE ZZZ3 FSDO SENT A FAX LISTING 14 DISCREPANCIES TO THE ZZZ2 OFFICE (FSDO) AT AROUND XA00 AM THE NEXT MORNING. ZZZ2 FSDO IMMEDIATELY CALLS MY COMPANY DIRECTOR OF MAINT AND HE IMMEDIATELY GNDS THE AIRPLANE. ALL OF THIS ACTIVITY HAS OCCURRED AFTER I HAVE ARRIVED AT MY DEST. NATURALLY; THERE IS/WAS NO WAY I COULD HAVE KNOWN THE ACFT WAS (OR WAS THOUGHT TO BE); UNAIRWORTHY. I FEEL THE ZZZ3 FSDO SHOULD HAVE NOTIFIED OUR COMPANY DIRECTLY AND/OR PLACED PLACARDS PHYSICALLY ON THE ACFT. I DID MY USUAL PREFLT AND FOUND THE ACFT READY FOR FLT. THERE WERE NO DISCREPANCIES IN THE LOGBOOK. SEVERAL DAYS LATER; I RECEIVED A MAINT FERRY PERMIT TO FLY THE ACFT FROM LND TO ZZZ4 (OUR MAINT BASE). PERMIT WAS ISSUED BY ZZZ2 FSDO WITH THE LIMITATION THAT THE ACFT BE INSPECTED BY AN A&P BEFORE DEP. A LCL A&P/IA INSPECTED THE ACFT AND SIGNED THE FERRY PERMIT. I FLEW ACFT BACK TO ZZZ4 FOR MAINT.