A B747 FREIGHTER FLIES OFF COURSE DURING THE TUNG LUNG 1 DEP PROC FROM VHHK.

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FLT SCHEDULED TO OPERATE MAR/XA/99 FROM HONG KONG TO ANC; AK; WITH AN INTERMEDIATE STOP AT OSAKA; JAPAN. FLC HAD DEADHEADED FROM USA AND ARRIVED HONG KONG 24 HRS PRIOR TO DEP. ON TRIP FROM THE HOTEL TO THE ARPT; WE (THE CREW) DISCUSSED OUR MUTUAL PROB OF BEING TIRED BOTH FROM THE LONG TRIP FROM THE UNITED STATES OF AMERICA AND OUR BEING UNABLE TO REST ADEQUATELY AT THE HOTEL. IN HONG KONG; XXX DOES NOT MAINTAIN AN OFFICE FOR THE FLC TO OBTAIN PREDEP BRIEFINGS (WX; FLT PLANS; NOTAMS; ETC) FROM A DISPATCHER. INSTEAD; FLCS RECEIVE FLT PLANS AND FLT DEP PAPERS (WX AND NOTAMS) IN THE ACFT; 1 1/2 HRS BEFORE SCHEDULED DEP TIME. MY PREFLT INCLUDED REVIEWING THE DEP PAPERS; CHKING THE FLT PLAN FOR ACCURACY; INSURING WAYPOINTS LOADED IN THE INS MATCH THE FLT PLAN. OUR FLT PLAN FILED CALLED FOR DEPARTING HONG KONG BY THE SID -- BROTHERS 1. AFTER LISTENING TO ATIS; I TUNED MY COM RADIO TO CLRNC DELIVERY AND LISTENED TO CLRNCS BEING DELIVERED TO OTHER CARRIERS DEPARTING FOR JAPAN. A FOREIGN FLT WAS GIVEN THE BROTHERS 1; ECATO TRANSITION ENRTE TO OSAKA; JAPAN. PROCS ASK THE FLC TO BRIEF THE DEP BEFORE INITIATING THE 'BEFORE START CHKLIST.' MY DEP BRIEFING WAS FOR THE BROTHERS 1. AT HONG KONG; FLTS ARE SUPPOSED TO CONTACT CLRNC DELIVERY 10 MINS PRIOR TO ENG START. THERE IS A 10 MIN WINDOW FOR THE FLC TO RECEIVE THE FLT PLAN CLRNC; PERFORM BEFORE START CHKLIST; START ENGS AND PUSH BACK FROM GATE. UPON RECEIVING THE CLRNC; WE NOTICED THE SID WAS CHANGED TO THE TUNG LUNG 1 FROM THE PLANNED BROTHERS 1. DURING THIS 10 MIN WINDOW; I HAD TO REVIEW THE TUNG LUNG 1 SID (EXAMPLE #1); RESET NAV RADIOS; AND PROGRAM THE INS. I THEN REBRIEFED THE CREW; 'THE TUNG LUNG 1 SID IS BASICALLY THE SAME AS THE BROTHERS 1 EXCEPT INITIALLY WE WILL TRACK THE 073 DEG RADIAL TO PORPA INTXN; INTERCEPT THE 296 DEG RADIAL TO TUNG LUNG VOR. PORPA INTXN IS LOCATED 5 MI FROM THE ARPT; ALL SPD RESTRS REMAIN THE SAME.' RIGHT HERE WAS MY MISTAKE. I DID NOT NOTICE THE PORPA INTXN WAS 7 DME FROM THE LOC SITE. ON DEP; I TRACKED OUT THE 073 DEG RADIAL AND COMMENCED A R TURN AT THE 5 DME TO INTERCEPT THE TUNG LUNG 296 DEG RADIAL. THE FO WARNED WE WERE NOT YET TO THE 5 DME; AND I STOPPED THE TURN BUT DID NOT CORRECT; TRYING TO EVALUATE THE SIT. THE NEXT MOMENT; HONG KONG DEP CTL STATED 'IT APPEARS YOU ARE DRIFTING R OF TRACK; TURN IMMEDIATELY TO 050 DEGS.' I COMPLIED AND WAS GIVEN RADAR VECTORS TO ON COURSE. OUR CONVERSATION WITH DEP CTL INDICATED THAT THE PROB OF PREMATURE TURNS HAD OCCURRED QUITE FREQUENTLY BOTH WITH MANUAL AND AUTOMATIC FLT CTL. HONG KONG RPTED THE INCIDENT TO COMPANY. UPON REVIEWING THE EVENT WITH CHIEF PLT; WE DISCOVERED THAT THE BROTHERS 1 SID HAD BEEN REVISED WITH A NEW CHART DATED MAR/XA/99. (EXAMPLE #2); THE NEW CHART COMBINED THE BROTHERS 1 AND THE TUNG LUNG 1 INTO THE SAME CHART. IT ALSO MAKES REF THE POS OF PORPA INTXN AT LEAST 3 TIMES INCLUDING A WARNING OF PRECISE TRACKING ON THE 073 DEG RADIAL FOR TERRAIN CLRNC. THIS CHART WAS NOT AVAILABLE TO EITHER THE FO OR MYSELF. COMPANY MAINTAINS AN INTL FLT KIT ON BOARD THE ACFT AND IS RESPONSIBLE FOR KEEPING THE CHARTS CURRENT.