What was found
ON APPROACH, AT GEAR EXTENSION, NR 3 HYD SYSTEM FAILED, AND EMPTIED. MX FOUND A LEAKING LINE IN THE CAC, DRAINED ENTIRE NR 3 HYD SYS ONTO THE RT CAC ELECTRONICS RACK CAUSING THE MANIFOLD FAIL AND NR 1 AND 3 AIR SYS TO SHUTOFF. EMERGENCY DECLARED, REPAIRED HYD LINE, REPLACED ALL ELECTRICAL BOXES ON RT CAC RACK, CLEANED HYD FLUID OUT OF CAC AND ELECTRICAL RACK & DUCTING.