Narrative:

It had been a long day already with bad WX flying in and out of ZZZ1. As we landed in ZZZ and taxied in and parked; a ticket agent boarded prior to disembarking the passenger. He asked us to quickly calculate the number of passenger and bags we could take on the outbound flight to ZZZ1 from ZZZ. The first officer's do the weight and balance so my first officer quickly checked the weight restriction for takeoff based on temperature. He then backed out the numbers using that restriction. Shortly thereafter; we boarded and subsequently took off for ZZZ1 using runway 29 (other runway was notamed closed). I noticed that we used more runway than usual for our takeoff roll. I checked his numbers at cruise after things settled down and found that in the rush back at the gate; he erroneously had used the weight restriction for runway 02. The flight went smooth and without incident; fortunately. This was a grievous error on my part because as the PIC; I should have slowed the pace of things for safety and checked his work as well. (Runway 29 is 6525 ft long; the other runway is 8000 ft long.)'

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Original NASA ASRS Text

Title: AN EMB145 DEPARTED OVER WT FOR THE ACTIVE RWY AFTER THE FO CALCULATED ALLOWABLE WT FOR ANOTHER RWY.

Narrative: IT HAD BEEN A LONG DAY ALREADY WITH BAD WX FLYING IN AND OUT OF ZZZ1. AS WE LANDED IN ZZZ AND TAXIED IN AND PARKED; A TICKET AGENT BOARDED PRIOR TO DISEMBARKING THE PAX. HE ASKED US TO QUICKLY CALCULATE THE NUMBER OF PAX AND BAGS WE COULD TAKE ON THE OUTBOUND FLT TO ZZZ1 FROM ZZZ. THE FO'S DO THE WT AND BALANCE SO MY FO QUICKLY CHECKED THE WT RESTRICTION FOR TKOF BASED ON TEMP. HE THEN BACKED OUT THE NUMBERS USING THAT RESTRICTION. SHORTLY THEREAFTER; WE BOARDED AND SUBSEQUENTLY TOOK OFF FOR ZZZ1 USING RWY 29 (OTHER RWY WAS NOTAMED CLOSED). I NOTICED THAT WE USED MORE RWY THAN USUAL FOR OUR TKOF ROLL. I CHKED HIS NUMBERS AT CRUISE AFTER THINGS SETTLED DOWN AND FOUND THAT IN THE RUSH BACK AT THE GATE; HE ERRONEOUSLY HAD USED THE WT RESTRICTION FOR RWY 02. THE FLT WENT SMOOTH AND WITHOUT INCIDENT; FORTUNATELY. THIS WAS A GRIEVOUS ERROR ON MY PART BECAUSE AS THE PIC; I SHOULD HAVE SLOWED THE PACE OF THINGS FOR SAFETY AND CHKED HIS WORK AS WELL. (RWY 29 IS 6525 FT LONG; THE OTHER RWY IS 8000 FT LONG.)'

Data retrieved from NASA's ASRS site as of January 2009 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.