Narrative:

While taxiing for takeoff runway 19 on tower frequency, was issued a SID change, while conducting taxi checklist. I got backed up and had my head down when PF, taxiing, stated 'we were cleared to hold short of runway 19, so we're cleared to cross runway 24.' I looked up momentarily and saw runway threshold, and said 'yeah, we're cleared to runway 19.' we taxied across runway threshold, visually clearing left and right, when tower stated that we had just crossed runway 19, and 'what were we doing?' we made a 180 degree turn on taxiway and held short of runway 19. There was traffic on about a 5 mi final (?) to runway 19 at the time. We had started the night at heathrow airport (egll) and repositioned to paris (lrpb) for a passenger flight, and had just dropped passenger at teb. We were taxiing for takeoff to our home base (isp). At the time of the incident, we had been on duty 12 1/2 hours, and had flown 8 hours 25 mins. This is not an especially long day for our operation, but after this incident, the copilot (also captain rated) and I admitted we were very tired. We had departed teb for egll on jan/tue/02 and had arrived at about XA00Z on jan/wed/02. There were construction barriers on taxiway just before runway 19 threshold, which may have distraction pilot taxiing.

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Original NASA ASRS Text

Title: RWY INCURSION AT THE END OF A LONG DAY.

Narrative: WHILE TAXIING FOR TKOF RWY 19 ON TWR FREQ, WAS ISSUED A SID CHANGE, WHILE CONDUCTING TAXI CHKLIST. I GOT BACKED UP AND HAD MY HEAD DOWN WHEN PF, TAXIING, STATED 'WE WERE CLRED TO HOLD SHORT OF RWY 19, SO WE'RE CLRED TO CROSS RWY 24.' I LOOKED UP MOMENTARILY AND SAW RWY THRESHOLD, AND SAID 'YEAH, WE'RE CLRED TO RWY 19.' WE TAXIED ACROSS RWY THRESHOLD, VISUALLY CLRING L AND R, WHEN TWR STATED THAT WE HAD JUST CROSSED RWY 19, AND 'WHAT WERE WE DOING?' WE MADE A 180 DEG TURN ON TXWY AND HELD SHORT OF RWY 19. THERE WAS TFC ON ABOUT A 5 MI FINAL (?) TO RWY 19 AT THE TIME. WE HAD STARTED THE NIGHT AT HEATHROW ARPT (EGLL) AND REPOSITIONED TO PARIS (LRPB) FOR A PAX FLT, AND HAD JUST DROPPED PAX AT TEB. WE WERE TAXIING FOR TKOF TO OUR HOME BASE (ISP). AT THE TIME OF THE INCIDENT, WE HAD BEEN ON DUTY 12 1/2 HRS, AND HAD FLOWN 8 HRS 25 MINS. THIS IS NOT AN ESPECIALLY LONG DAY FOR OUR OP, BUT AFTER THIS INCIDENT, THE COPLT (ALSO CAPT RATED) AND I ADMITTED WE WERE VERY TIRED. WE HAD DEPARTED TEB FOR EGLL ON JAN/TUE/02 AND HAD ARRIVED AT ABOUT XA00Z ON JAN/WED/02. THERE WERE CONSTRUCTION BARRIERS ON TXWY JUST BEFORE RWY 19 THRESHOLD, WHICH MAY HAVE DISTR PLT TAXIING.

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.