An air carrier aircraft departed sfo runway 28R and was notified after takeoff that the weight and b...

Narrative:

Shortly after takeoff we got an ACARS message that there were new weights to be used and again dispatch ACARS'ed us to say that the ramp loaded an extra 1;500 pounds of cargo and did not advise load control. Based on the old numbers we took off 1;500 pounds too heavy. The good news is that we elected to use runway 28L for safety (166K to weight) and it would have flown off on one engine. However; runway 1 left/right would not have worked and might have put us in the bay (1L/right had us bleeds off max and no extra margin). Our crews trust the company to give us the most accurate data. I have no idea how I could have been more vigilant other than weigh every bag myself. As an aside; we were to be dispatched ACARS inoperative (cross country; heavy weight and en route weather) and we had to fight to get it fixed. The fix took about ten minutes. If we didn't have the ACARS; we might have used the one's based on the skimpy data; not real time.

Original NASA ASRS Text

Title: An Air Carrier aircraft departed SFO Runway 28R and was notified after takeoff that the weight and balance was 1;500 LBS light which meant a Runway 1 takeoff would have been dangerous at their high gross weight.

Narrative: Shortly after takeoff we got an ACARS message that there were new weights to be used and again Dispatch ACARS'ed us to say that the ramp loaded an extra 1;500 LBS of cargo and did not advise Load Control. Based on the old numbers we took off 1;500 LBS too heavy. The good news is that we elected to use Runway 28L for safety (166K to weight) and it would have flown off on one engine. However; Runway 1 L/R would not have worked and might have put us in the bay (1L/R had us bleeds off max and no extra margin). Our crews trust the Company to give us the most accurate data. I have no idea how I could have been more vigilant other than weigh every bag myself. As an aside; we were to be dispatched ACARS inoperative (cross country; heavy weight and en route weather) and we had to fight to get it fixed. The fix took about ten minutes. If we didn't have the ACARS; we might have used the one's based on the skimpy data; not real time.

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	1042495
Time
Date	201210
Local Time Of Day	0001-0600
Place
Locale Reference	SFO.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Person 1
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 220 Flight Crew Total 19400 Flight Crew Type 9400
Events
Anomaly	Deviation - Procedural Published Material / Policy Deviation - Procedural Weight And Balance

An air carrier aircraft departed sfo runway 28R and was notified after takeoff that the weight and balance was 1;500 pounds light which meant a runway 1 takeoff would have been dangerous at their high gross weight.