Narrative:

Operations called me on the phone with the message. I was asked to get back to them even if I took a flight delay. I deplaned and got to a phone and the message was could I continue the flight on to detroit since the next captain had called in sick. Although it was already a long day, I did not have a fatigue problem. I told operations that I could do the continuation since I could use reduced rest tomorrow and extended rest the following day west/O schedules or off-duty time conflict. In my mind there was no conflict since it was the sam flight #. I did not perceive it as a schedule since we do not receive our assignment via phone, but rather printed out up to 90 days ahead of time. I ran it by my first officer and we did not see a conflict, even though he would be relieved after the next flight segment. The new first officer had no problem with the interpretation. I saw it only as an inconvenience to me and a chance to help out in a scheduling emergency since no one else wa readily available. I felt I was safe for flight since I was not fatigued. It was a pleasant VFR flight route which I was well familiar with and I was flying with a first officer who was a good friend. The next day I was told by the captain whose place I took that I was illegal to take the flight. I told him I didn't understand, but he showed me that any flight time scheduled over 8 hours, however the means of reception, cannot be accomplished. Then I understood.

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Original NASA ASRS Text

Title: PLT FLEW OVER ALLOWED FLT HOURS IN 24 HOURS.

Narrative: OPS CALLED ME ON THE PHONE WITH THE MESSAGE. I WAS ASKED TO GET BACK TO THEM EVEN IF I TOOK A FLT DELAY. I DEPLANED AND GOT TO A PHONE AND THE MESSAGE WAS COULD I CONTINUE THE FLT ON TO DETROIT SINCE THE NEXT CAPT HAD CALLED IN SICK. ALTHOUGH IT WAS ALREADY A LONG DAY, I DID NOT HAVE A FATIGUE PROB. I TOLD OPS THAT I COULD DO THE CONTINUATION SINCE I COULD USE REDUCED REST TOMORROW AND EXTENDED REST THE FOLLOWING DAY W/O SCHEDULES OR OFF-DUTY TIME CONFLICT. IN MY MIND THERE WAS NO CONFLICT SINCE IT WAS THE SAM FLT #. I DID NOT PERCEIVE IT AS A SCHEDULE SINCE WE DO NOT RECEIVE OUR ASSIGNMENT VIA PHONE, BUT RATHER PRINTED OUT UP TO 90 DAYS AHEAD OF TIME. I RAN IT BY MY F/O AND WE DID NOT SEE A CONFLICT, EVEN THOUGH HE WOULD BE RELIEVED AFTER THE NEXT FLT SEGMENT. THE NEW F/O HAD NO PROB WITH THE INTERPRETATION. I SAW IT ONLY AS AN INCONVENIENCE TO ME AND A CHANCE TO HELP OUT IN A SCHEDULING EMER SINCE NO ONE ELSE WA READILY AVAILABLE. I FELT I WAS SAFE FOR FLT SINCE I WAS NOT FATIGUED. IT WAS A PLEASANT VFR FLT RTE WHICH I WAS WELL FAMILIAR WITH AND I WAS FLYING WITH A F/O WHO WAS A GOOD FRIEND. THE NEXT DAY I WAS TOLD BY THE CAPT WHOSE PLACE I TOOK THAT I WAS ILLEGAL TO TAKE THE FLT. I TOLD HIM I DIDN'T UNDERSTAND, BUT HE SHOWED ME THAT ANY FLT TIME SCHEDULED OVER 8 HRS, HOWEVER THE MEANS OF RECEPTION, CANNOT BE ACCOMPLISHED. THEN I UNDERSTOOD.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.