Narrative:

Flight aircraft X ipl-lax, on nov/xa/99. The station had obtained our flow time of XA45 to XA50. This time was going to make us hurry to depart. However, since we had been delayed all day due to WX, we were all working hard to get our schedule back on time. My first officer obtained our clearance to lax from san diego radio, and we were issued a clearance void time. When we started our takeoff roll, my watch showed exactly XA50. I checked in with ZLA on 128.6 MHZ by reporting that we were climbing through 3000 ft (approximately) for 7000 ft. He stated that our clearance was void since we had a void time of XA50 and it was now XA57. I stated that we had started our takeoff roll at XA50. To this he stated that our flight plan had dropped off the computer and that he would refile it for us. He gave us an initial vector for julian VOR. Approximately 2 mins later, he reclred us to lax via julian and the vista 1 arrival. Before he gave us a frequency change, I asked him for a time check, my watch was about 3 mins shower than his was. I apologized for this, and he did not seem too upset. Since the WX was VFR, the safety of the flight was never in question. We had the same safety margin as a flight that departs ipl in VFR conditions and obtains their IFR clearance while airborne within 50 NM of the airport, which is an approved procedure at my airline. A mistake was made, and I accept full responsibility for it. My biggest mistake was hurrying to make a flow time. My next biggest mistake was that I had not checked my watch against ATC time for a few weeks. In this case, my watch ended up being about 3 mins off. I will not make these mistakes again in the future.

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Original NASA ASRS Text

Title: A BRASILIA 120 FLC DEPARTED IPL AFTER THE CLRNC VOID TIME.

Narrative: FLT ACFT X IPL-LAX, ON NOV/XA/99. THE STATION HAD OBTAINED OUR FLOW TIME OF XA45 TO XA50. THIS TIME WAS GOING TO MAKE US HURRY TO DEPART. HOWEVER, SINCE WE HAD BEEN DELAYED ALL DAY DUE TO WX, WE WERE ALL WORKING HARD TO GET OUR SCHEDULE BACK ON TIME. MY FO OBTAINED OUR CLRNC TO LAX FROM SAN DIEGO RADIO, AND WE WERE ISSUED A CLRNC VOID TIME. WHEN WE STARTED OUR TKOF ROLL, MY WATCH SHOWED EXACTLY XA50. I CHKED IN WITH ZLA ON 128.6 MHZ BY RPTING THAT WE WERE CLBING THROUGH 3000 FT (APPROX) FOR 7000 FT. HE STATED THAT OUR CLRNC WAS VOID SINCE WE HAD A VOID TIME OF XA50 AND IT WAS NOW XA57. I STATED THAT WE HAD STARTED OUR TKOF ROLL AT XA50. TO THIS HE STATED THAT OUR FLT PLAN HAD DROPPED OFF THE COMPUTER AND THAT HE WOULD REFILE IT FOR US. HE GAVE US AN INITIAL VECTOR FOR JULIAN VOR. APPROX 2 MINS LATER, HE RECLRED US TO LAX VIA JULIAN AND THE VISTA 1 ARR. BEFORE HE GAVE US A FREQ CHANGE, I ASKED HIM FOR A TIME CHK, MY WATCH WAS ABOUT 3 MINS SHOWER THAN HIS WAS. I APOLOGIZED FOR THIS, AND HE DID NOT SEEM TOO UPSET. SINCE THE WX WAS VFR, THE SAFETY OF THE FLT WAS NEVER IN QUESTION. WE HAD THE SAME SAFETY MARGIN AS A FLT THAT DEPARTS IPL IN VFR CONDITIONS AND OBTAINS THEIR IFR CLRNC WHILE AIRBORNE WITHIN 50 NM OF THE ARPT, WHICH IS AN APPROVED PROC AT MY AIRLINE. A MISTAKE WAS MADE, AND I ACCEPT FULL RESPONSIBILITY FOR IT. MY BIGGEST MISTAKE WAS HURRYING TO MAKE A FLOW TIME. MY NEXT BIGGEST MISTAKE WAS THAT I HAD NOT CHKED MY WATCH AGAINST ATC TIME FOR A FEW WKS. IN THIS CASE, MY WATCH ENDED UP BEING ABOUT 3 MINS OFF. I WILL NOT MAKE THESE MISTAKES AGAIN IN THE FUTURE.

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.