CAPT OF AN ACR SUPPLEMENTAL OPERATED DC10-15 QUESTIONED HIS FLT DUTY GOING OVER 8 HRS OF FLT TIME IN A 24 HR PERIOD EVEN THOUGH IT WAS NOT SCHEDULED TO GO OVER 8 HRS.

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THE ISSUE IS TIME AND DUTY. WE WERE SCHEDULED TO FLY DTW- LAS; BREAK DUTY FOR 6 HRS 5 MINS AND FLY LAS-DTW FOR 10 HRS 20 MINS DUTY AND 7 HRS 50 MINS HARD FLY. HOWEVER; WE DIVERTED TO DEN FOR WX THEN RETURNED TO LAS FOR 8 HRS 20 MINS DUTY TIME AND 6 HRS 4 MINS HARD TIME. OUR FLT TO DTW WAS DELAYED 2+ HRS. COMPANY CREW SCHEDULES SAID THAT SINCE THIS TRIP WAS SCHEDULED LEGAL (UNDER 8 HRS HARD FLY) AND THAT THE PROJECTED OVERAGE WAS DUE TO WX; WE WERE LEGAL TO CONTINUE OUR SERIES OF TRIPS THAT DAY (STILL UNDER 16+ HR DUTY). WE DEPARTED LAS AND ARRIVED DTW 3 HRS 20 MINS HARD FLY AND AN ADDITIONAL DUTY PERIOD OF 4 HRS 35 MINS. TOTAL DUTY FOR THE DAY WAS 12 HRS 55 MINS AND TOTAL HARD FLY WAS 9 HRS 24 MINS. OUR COMPANY HAS USED THIS INTERP CONSISTENTLY IN THE PAST BUT NOW WITH SOME MGMNT CHANGES AND PLT GROUP ON THE PROPERTY; SOME FEEL THIS TO BE INCORRECT. MY CREW WAS CAUGHT IN THE MIDDLE AND ELECTED TO CONTINUE THE FLT BELIEVING WE WERE SCHEDULED LEGALLY. FOR CLARIFICATION IN OPERATING UNDER SUPPLEMENTAL RULES FOR THIS CHARTER FLYING; MY CREW WOULD APPRECIATE ANY CLARIFICATION AVAILABLE ON THIS TYPE OF SIT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR WAS QUOTED SECTION 121.507 OF THE FARS WITH REGARD TO THE DUTY TIME PERMITTED WITH A 3 PERSON CREW OPERATING UNDER A SUPPLEMENTAL ACR CERTIFICATE. OVER 8 HRS OF FLT TIME; UP TO 12 HRS IS PERMITTED.