An air carrier medium large transport inadvertently took off overweight.

Attributes
ACN	254258
Time
Date	199310
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bos airport : sfo
State Reference	MA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mco
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 12000 flight time type : 830
ASRS Report	254258
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 6000 flight time type : 400
ASRS Report	254254
Events
Anomaly	non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

Flew a nonstop bos-sfo and noticed much higher than expected fuel burn. Suspected aircraft may have been misloaded in bos, so we had cargo checked as it was unloaded in sfo. We found to our dismay that the cargo was actually 1400 pounds more than bos had said it was. Since we were only legal by 200 pounds in bos, this mistake actually made us illegal by 1200 pounds. This type of error by the ground personnel leaves me feeling very vulnerable! The fact that the takeoff at bos was 1000 ft RVR with us barreling down the runway at 155 KTS only seeing 3 runway lights ahead of us doesn't increase my comfort level with this gross weight error either! Supplemental information from acn 254254: the destination audit revealed our actual bag count was 25 pounds more than computed (600 pounds) and mail was undercomputed by 800 pounds, 1400 pounds total.

Original NASA ASRS Text

Title: AN ACR MLG INADVERTENTLY TOOK OFF OVERWT.

Narrative: FLEW A NONSTOP BOS-SFO AND NOTICED MUCH HIGHER THAN EXPECTED FUEL BURN. SUSPECTED ACFT MAY HAVE BEEN MISLOADED IN BOS, SO WE HAD CARGO CHKED AS IT WAS UNLOADED IN SFO. WE FOUND TO OUR DISMAY THAT THE CARGO WAS ACTUALLY 1400 LBS MORE THAN BOS HAD SAID IT WAS. SINCE WE WERE ONLY LEGAL BY 200 LBS IN BOS, THIS MISTAKE ACTUALLY MADE US ILLEGAL BY 1200 LBS. THIS TYPE OF ERROR BY THE GND PERSONNEL LEAVES ME FEELING VERY VULNERABLE! THE FACT THAT THE TKOF AT BOS WAS 1000 FT RVR WITH US BARRELING DOWN THE RWY AT 155 KTS ONLY SEEING 3 RWY LIGHTS AHEAD OF US DOESN'T INCREASE MY COMFORT LEVEL WITH THIS GROSS WT ERROR EITHER! SUPPLEMENTAL INFORMATION FROM ACN 254254: THE DEST AUDIT REVEALED OUR ACTUAL BAG COUNT WAS 25 LBS MORE THAN COMPUTED (600 LBS) AND MAIL WAS UNDERCOMPUTED BY 800 LBS, 1400 LBS TOTAL.

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.