A GLF-2 LANDED AT LGA WITHOUT A REQUIRED WAIVER FOR THE OP.

Narrative

AFTER LNDG AND DE-PLANING OUR PAX AT THE LA GUARDIA ARPT; OUR ACFT WAS APCHED BY ARPT AUTHORITY PERSONNEL AND ARPT POLICE. THEY ADVISED US THAT WE HAD LANDED WITHOUT A WAIVER REQUIRED FOR PRIVATE ACFT; AND THAT WE WOULD NEED ONE FOR OUR DEP. WE WERE THEN PUT IN TOUCH WITH THE FAA COMMAND CTR. DURING OUR DISCUSSION WITH A REPRESENTATIVE IT BECAME APPARENT THAT WE WERE AN AIR CARRIER; NOT A PRIVATE ACFT REQUIRING A WAIVER; AND THAT IT WAS CONFUSING BEING OFFERED A RESERVATION NUMBER FROM THE ARPT RESERVATION OFFICE WHILE STILL NOT MEETING THE REQUIREMENT FOR A WAIVER TO ENTER THE AFFECTED AIRSPACE HAD WE BEEN A PRIVATE ACFT. FOR ME THE PROB BEGAN WHEN I MADE MY ARPT RESERVATION FOR ARRIVAL AND DEP. IN THAT PROCESS I WAS PROMPTED TO ENTER MY 'ACFT TAIL NUMBER.' TO AVOID ANY MISUNDERSTANDING ABOUT HAVING A RESERVATION OR NOT; I IMPROPERLY MADE THE DECISION TO FILE MY FLT PLAN USING THE ACFT N NUMBER (TAIL NUMBER) INSTEAD OF THE COMPANY CALL SIGN THAT WOULD HAVE IDENTIFIED OUR FLT AS AN AIR CARRIER. MY ERROR IN NOT USING A COMPANY CALL SIGN WAS COMPOUNDED WHEN I RECEIVED MY PREFLT BRIEFING. THE FAA HAS PUT AN ADVISORY ON THE SYSTEM'S INITIAL MESSAGE INDICATING THE REQUIREMENT FOR A WAIVER IN ADDITION TO A RESERVATION FOR PRIVATE ACFT. THIS MESSAGE WOULD HAVE ALERTED ME TO THE IMPORTANCE OF SOMEHOW IDENTIFYING MYSELF AS A COMMERCIAL OPERATOR. HAD I SIMPLY FLOWN THIS TRIP USING A COMPANY CALL SIGN; I DON'T BELIEVE THERE WOULD HAVE BEEN A PROBLEM WITH THIS OP. OUR BASE MANAGER HAS ISSUED A DIRECTIVE FOR ALL COMPANY FLTS TO BE FLOWN UNDER A COMPANY CALL SIGN. IN THE FUTURE I WILL DIG DEEPER FOR ALL APPLICABLE NOTAMS AND WILL ALWAYS OPERATE COMPANY FLTS UNDER OUR COMPANY CALL SIGN.