FLC TOOK OFF WITH THE WRONG ACFT WT ON THE MANIFEST.

Narrative

THIS RPT INVOLVES A DISPATCH PAPER WORK ERROR. FLT SAN- PHX WAS DISPATCHED WITH AN AUTH ALLOWABLE TKOF GROSS WT OF 112200 LBS. THE ACFT TOOK OFF AT A GROSS WT OF 113900 LBS; WELL BELOW THE RWY OR CLB LIMITED TKOF GROSS WT PERFORMANCE LIMIT OF 118000 LBS. SAFETY WAS NOT A FACTOR IN THIS TKOF AS OUR TKOF WT WAS MORE THAN 4000 LBS BELOW THE PERFORMANCE LIMIT. THE DISPATCH RELEASE WAS PREPARED FOR RWY 9 WITH AN ALLOWABLE TKOF GROSS WT OF 112200 LBS. WE USED RWY 27 WHICH COULD BE USED WITH AN ALLOWABLE TKOF GROSS WT OF 118600 LBS. THE ERROR ON THE DISPATCH RELEASE WAS NOT CAUGHT UNTIL THE ACFT WAS ENRTE. MUST PAY CLOSER ATTN TO THE DATA ON THE RELEASE TO ENSURE ACCURACY AND AMEND THE RELEASE AS NECESSARY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR FLIES THE B-737 FOR A LOW COST ACR THAT IS ON THE ASCENDANCY. HE CHOSE NOT TO COOPERATE IN A SPECIAL STUDY AND CONTRIBUTED NO ADDITIONAL INFO OTHER THAN ACFT TYPE. CALLBACK CONVERSATION WITH RPTR FROM ACN #296270 REVEALED THE FOLLOWING INFO: THE RPTR IS FLYING AS FO ON THE B-737-300 FOR AN ACR THAT IS EXPANDING RAPIDLY. HE HAS FLOWN AS CAPT ON THIS ACFT FOR ANOTHER ACR AND AS CAPT FOR OTHER ACRS ON OTHER ACFT. HE CONSIDERED THIS TO BE A 'NON EVENT;' BUT SENT IN AN ASRS RPT BECAUSE THE CAPT DID. THE CAPT DID NOT RPT THIS TO THE ACR; THE ONLY PLACE THAT MIGHT HAVE DONE SOME GOOD. HIS ACR IS JUST NOW BECOMING AWARE OF COCKPIT RESOURCE MGMNT PROBS AND IS BEGINNING TO DO SOMETHING ABOUT THIS. THE FO IS CONCERNED ABOUT HIS HAVING TO DO SEVERAL TASKS THAT PREVENT HIM FROM HELPING WHEN THE CAPT IS TAXIING. THE FO IS NOT EXPECTED TO LOOK AT AND CONFIRM THE TKOF WT COMPUTATION. THE ACR PUTS A LOT OF SCHEDULE PRESSURE ON ITS CREWS.