After commencing taxi, flight crew received acras message they were over weight for taxi.

Attributes
ACN	191321
Time
Date	199110
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : syd
State Reference	FO
Altitude	agl bound lower : 0 agl bound upper : 0
Aircraft 1
Controlling Facilities	tracon : phx
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : atp
Experience	flight time last 90 days : 100 flight time total : 15000 flight time type : 3000
ASRS Report	191321
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : flight engineer pilot : commercial
Experience	flight time last 90 days : 225 flight time total : 4500 flight time type : 225
ASRS Report	191414
Events
Anomaly	non adherence : far other anomaly other
Independent Detector	other flight crewa other other : unspecified
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

My company uses a procedure whereby the taxi and takeoff weights are not presented to the cockpit crew until after taxiing from the gate. Passenger/fuel/cargo load is relayed to the aircraft via ACARS. After gate departure from syd the crew was advised that the final weight exceeded the maximum structural taxi weight by 1700 pounds. This procedure takes the cockpit crew 'out of the safety loop'. Unfortunately, this procedure is 'FAA approved'. Taxi back to gate was required. Recommendation: FAA require airlines to not allow taxi until the aircraft weight is finalized to assure that the crew will not taxi at an unsafe structural weight.

Original NASA ASRS Text

Title: AFTER COMMENCING TAXI, FLC RECEIVED ACRAS MESSAGE THEY WERE OVER WT FOR TAXI.

Narrative: MY COMPANY USES A PROC WHEREBY THE TAXI AND TKOF WTS ARE NOT PRESENTED TO THE COCKPIT CREW UNTIL AFTER TAXIING FROM THE GATE. PAX/FUEL/CARGO LOAD IS RELAYED TO THE ACFT VIA ACARS. AFTER GATE DEP FROM SYD THE CREW WAS ADVISED THAT THE FINAL WT EXCEEDED THE MAX STRUCTURAL TAXI WT BY 1700 POUNDS. THIS PROC TAKES THE COCKPIT CREW 'OUT OF THE SAFETY LOOP'. UNFORTUNATELY, THIS PROC IS 'FAA APPROVED'. TAXI BACK TO GATE WAS REQUIRED. RECOMMENDATION: FAA REQUIRE AIRLINES TO NOT ALLOW TAXI UNTIL THE ACFT WT IS FINALIZED TO ASSURE THAT THE CREW WILL NOT TAXI AT AN UNSAFE STRUCTURAL WT.

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.