A dispatcher and first officer reported that after previous flights were canceled the passenger load...

Attributes
ACN	924530
Time
Date	201012
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Regional Jet CL65 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	Dispatcher
Qualification	Dispatch Dispatcher
Person 2
Function	Pilot Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 100 Flight Crew Total 8000 Flight Crew Type 4500
Events
Anomaly	Deviation - Procedural Published Material / Policy Deviation - Procedural FAR Deviation - Procedural Weight And Balance Inflight Event / Encounter Fuel Issue

Narrative:

The pilot called in for a reroute and at the same time say he was at the end of the runway burning fuel and needed to run numbers for his weight. The flight originally had 23 passengers and now had 45 but no one had called for new weights or to tell us until he was at the end of the runway. I was trying to get his weights right and he kept saying he was taking off with those numbers and would call me after takeoff. I was trying to tell him the system didn't run the numbers that fast and I was trying different ways to raise the burn so he would not be over weight for take off. He had a wheels-up for the impacted destination but we could have pushed it back to get the numbers correct. I would have never known they were over weight or had put that many more people on had he not called now with the reroute. I had to give him numbers with running the wing and cowls on and new flight level to get it correct. Had I been called at the gate I could have run the new weights with plenty of time as to not have had this happen. We should also be notified when more people are being added due to cancelled flights.

Original NASA ASRS Text

Title: A Dispatcher and First Officer reported that after previous flights were canceled the passenger load on this flight increased but the weight and balance was not revised until the Captain called for a reroute and notified Dispatch about takeoff and landing over weight issues.

Narrative: The pilot called in for a reroute and at the same time say he was at the end of the runway burning fuel and needed to run numbers for his weight. The flight originally had 23 passengers and now had 45 but no one had called for new weights or to tell us until he was at the end of the runway. I was trying to get his weights right and he kept saying he was taking off with those numbers and would call me after takeoff. I was trying to tell him the system didn't run the numbers that fast and I was trying different ways to raise the burn so he would not be over weight for take off. He had a wheels-up for the impacted destination but we could have pushed it back to get the numbers correct. I would have never known they were over weight or had put that many more people on had he not called now with the reroute. I had to give him numbers with running the wing and cowls on and new flight level to get it correct. Had I been called at the gate I could have run the new weights with plenty of time as to not have had this happen. We should also be notified when more people are being added due to cancelled flights.

Data retrieved from NASA's ASRS site as of April 2012 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.

A dispatcher and first officer reported that after previous flights were canceled the passenger load on this flight increased but the weight and balance was not revised until the captain called for a reroute and notified dispatch about takeoff and landing over weight issues.