Air carrier makes takeoff over weight for runway in use.

Attributes
ACN	238267
Time
Date	199304
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bos
State Reference	MA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : takeoff ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp pilot : cfi pilot : commercial
Experience	flight time last 90 days : 207 flight time total : 16010 flight time type : 402
ASRS Report	238267
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe non adherence : far non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Automated weight and balance not available due to a minor MEL that required a manual calculation. Asked copilot to check takeoff analysis to make sure we were okay. Situation was somewhat rushed because we were next to go. Copilot said we were good to go on runway 9. After takeoff, once established in cruise, I checked the book myself. I found much to my surprise, that we were not okay on the runway in question. We needed a longer runway. In retrospect, weight and runway analysis problems should be done at the gate so there is ample time to carefully read the data. Heads up, especially when the flight is very full. Also, the RVR was low enough to warrant a longer runway even without a weight problem. It's just good operating procedure to have more runway available on a low visibility takeoff. Finally, when in doubt, check it yourself.

Original NASA ASRS Text

Title: ACR MAKES TKOF OVER WT FOR RWY IN USE.

Narrative: AUTOMATED WT AND BAL NOT AVAILABLE DUE TO A MINOR MEL THAT REQUIRED A MANUAL CALCULATION. ASKED COPLT TO CHK TKOF ANALYSIS TO MAKE SURE WE WERE OKAY. SIT WAS SOMEWHAT RUSHED BECAUSE WE WERE NEXT TO GO. COPLT SAID WE WERE GOOD TO GO ON RWY 9. AFTER TKOF, ONCE ESTABLISHED IN CRUISE, I CHKED THE BOOK MYSELF. I FOUND MUCH TO MY SURPRISE, THAT WE WERE NOT OKAY ON THE RWY IN QUESTION. WE NEEDED A LONGER RWY. IN RETROSPECT, WT AND RWY ANALYSIS PROBS SHOULD BE DONE AT THE GATE SO THERE IS AMPLE TIME TO CAREFULLY READ THE DATA. HEADS UP, ESPECIALLY WHEN THE FLT IS VERY FULL. ALSO, THE RVR WAS LOW ENOUGH TO WARRANT A LONGER RWY EVEN WITHOUT A WT PROB. IT'S JUST GOOD OPERATING PROC TO HAVE MORE RWY AVAILABLE ON A LOW VISIBILITY TKOF. FINALLY, WHEN IN DOUBT, CHK IT YOURSELF.

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.