LOSS OF L HYD SYS.

Narrative

SHORTLY AFTER LEVEL OFF AT FL330 E OF GRAND RAPIDS; ENRTE TO LONDON HEATHROW; THE L HYD SYS QUANTITY BEGAN DECREASING. AFTER ACCOMPLISHING CHKLIST FOR THE PROB; WE REQUESTED VECTORS FOR RETURN TO ORD. THE BOEING 767 WE WERE FLYING HAD NO FUEL DUMP SYS; AND NOT WANTING TO STAY AIRBORNE WITH 1 HYD SYS GONE LONG ENOUGH TO BURN DOWN TO MAX LNDG WT; I ELECTED TO LAND OVERWT AT ORD. WE DID NOT REQUEST PRIORITY HANDLING BY ATC BUT DID DECLARE AN EMER DUE TO THE FACT THAT SUCH A DECLARATION IS REQUIRED WHENEVER AN OVERWT LNDG IS ANTICIPATED. THE ACFT WAS ABOUT 33000 PLUS LBS OVER MAX LNDG WT AT TOUCHDOWN; WHICH WAS ACCOMPLISHED WITH ABOUT A 200 FPM SINK RATE. CRASH/FIRE/RESCUE EQUIP AND PERSONNEL INSPECTED THE LNDG GEAR AFTER WE CLRED RWY 9R; FOUND NO SIGN OF DAMAGE OR OVERHEATING; AND I TAXIED THE ACFT TO THE TERMINAL AND TURNED IT OVER TO MAINT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATES THAT HIS ACR POLICY IS TO CALL FOR THE EMER EQUIP WHEN MAKING AN OVERWT LNDG NO EMER AID WAS NEEDED. THE LNDG WAS MADE ON THE LONGEST RWY CLOSEST INTO THE WIND. THERE WAS ANOTHER ACFT WAITING FOR THE CREW UPON ARR. IF ONE IS TO LOSE A HYD SYS ON THE B-767; THE L ONE IS THE BETTER TO LOSE AS IT HAS THE LEAST RESPONSIBILITY. SUPPLEMENTAL INFO FROM ACN 273942: OUR QUICK REF HANDBOOK (FOR EMER PROC) IS POORLY LAID OUT. I SPEND TOO LONG LOOKING FOR THE CORRECT SIT IN THE QUICK REF HANDBOOK. IT NEEDS TO BE REDESIGNED AND/OR CHANGED TO BE MORE USER FRIENDLY.