Narrative:

Clearance off E29 to takeoff before void time of XX05Z. Takeoff at XX03 because of starting problem. ATC said clearance was void for 2 mins. Advised I still showed 1 min to go and had time hack.

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Original NASA ASRS Text

Title: FLC TOOK OFF AT VOID TIME.

Narrative: CLRNC OFF E29 TO TKOF BEFORE VOID TIME OF XX05Z. TKOF AT XX03 BECAUSE OF STARTING PROB. ATC SAID CLRNC WAS VOID FOR 2 MINS. ADVISED I STILL SHOWED 1 MIN TO GO AND HAD TIME HACK.

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.