ACR WDB BLEW TIRE ON TKOF CAUSING LOSS OF 2 OF 4 HYDRAULIC SYSTEMS. EMERGENCY DECLARED; BUT WHEN SITUATION STABILIZED PROCEEDED TO ALT ARPT RATHER THAN RETURN AND LAND.

Narrative

UPON ROTATION; FELT IMPACT ON FUSELAGE. TWR RPTED TIRE DEBRIS ON RWY. LOST 2 OF 4 HYD SYS. ELECTED TO CONTINUE TO LAX AS ALTERNATE. LAS RWY 25 RPTED CLOSED. DECLARED EMER. LANDED ON RWY 25R AT LAX. ALL TWR; DEP; ENRTE AND APCH CTLRS WERE VERY HELPFUL. CALLBACK CONVERSATION WITH RPTR ACN 91731 REVEALED THE FOLLOWING: ACFT WAS ALMOST AT MAX GROSS WT LOADED FOR HNL. DOUBLE CHECKED V-SPDS AND DETERMINED THEY HAD NOT EXCEEDED MAX TIRE SPD. THE B SYS WAS LOST IMMEDIATELY AFTER THE TIRE BLEW AND THE D SYS SHORT TIME LATER ALTHOUGH D SYS ONLY LOST PRESSURE AND NOT FLUID. B SYS IS NORMAL SUPPLY FOR GEAR AND BRAKES AND C SYS IS ALTERNATE FOR BRAKES AND FLAPS AND NOSE STEERING. UNABLE TO RETRACT GEAR AND LOST SOME FLT CTLS. CTL STILL NORMAL EXCEPT LOST ABOUT 40% OF ROLL CAPABILITY. WHEN TIRE BLEW PIECE WENT THROUGH BOTH UPPER AND LOWER WING PANEL BEHIND WING SPAR WHICH IS WHERE HYD LINES HAD BEEN ROUTED ON PURPOSE FOR PROTECTION. INITIALLY WERE GOING TO LAND LAS; BUT ONCE STABILIZED AND REALIZED OTHER 2 HYD SYSTEMS INTACT AND STABLE; AND ALL CHKLIST COMPLETED; HAD TIME TO ANALYZE SITUATION. AFTER CONSIDERING EVERYTHING; ALL ENGS RUNNING REMAINING HYD SYSTEMS NORMAL WOULD HAVE TO REMAIN IN AIR CONSIDERABLE TIME DUMPING FUEL. WX CLEAR ALL THE WAY TO LAX AND SEVERAL ARPTS ALONG WAY IF NECESSARY LAND IMMEDIATELY AND NO MAINT AT LAS. ENTIRE FLT CREW WERE ASKED AND AGREED TO GO TO LAX. ALSO AT LAS WITH LONG RWY CLOSED AN IMMEDIATE LNDG WOULD HAVE BEEN ON THE SHORTER RWY WHICH IS A DOWNGRADE. SPOILERS NOT AVAILABLE FOR STOPPING AND A HIGH TEMP. AFTER TIRE BLEW PIC FLEW ACFT AND HAD THE F/O AND S/O RUN CHKLISTS. CAPT KNEW THE F/O; THE RPTR; HAD SET UP THIS ACR TRNING AND TAUGHT THE CLASSES ON THIS WDB AND RPTR FELT THIS WAS WHY CAPT HAD F/O RUN EMER CHKLISTS AS HE FELT HE KNEW ACFT THE BEST FOR TROUBLE SHOOTING PROB. STATED S/O DID EXCELLENT JOB AND AFTER COMPLETION OF EACH CHKLIST WROTE DOWN WHAT ONES COMPLETED SO THEY COULD RECHK WHAT HAD BEEN DONE ALREADY. STATED ONE PROB WAS F/A PROC WHEN TOLD EMER LNDG IMMINENT. THEIR PROC CALLS FOR COCKPIT DOOR TO BE OPEN. ONLY PROB THEN ALL THE F/A PAX ANNOUNCEMENTS AND EMER SHOUTING MADE CONVERSATION IN COCKPIT DIFFICULT. RPTR WILL WORK TO GET THIS CHANGED. THIS ACR POI INVESTIGATED THE INCIDENT AND WAS NOT HAPPY THEY WENT TO LAX INSTEAD OF LNDG BACK AT LAS; BUT AFTER HEARING THEIR REASONING WAS SATISFIED AND APPARENTLY IS TAKING NO ACTION AGAINST CREW.