What was found
OXYGEN ACCESS PANEL ON RIGHT SIDE OF FUSELAGE HAD A NOTICEABLE AMOUNT OF SKYDROL-500 ACCUMALATED INSIDE THE ACCESS DOOR OF THE O-2 SERVICE PANEL. IT WAS DETERMINED THAT THE FLUID WAS COMING FROM THE EMERGENCY LANDING GEAR AIR RELEASE VALVE VENT PORT DUE TO A LEAKING HYD/AIR SHUTTLE VALVE FROM THE LEFT HAND LANDING GEAR SIDE STAY ACTUATOR. THIS VENT IS FORWARD OF THE O-2 SERVICE PANEL. SKYDROL 500B-4 MSDS STATES - MATERIALS TO AVOID EXPOSURE TO STRONG OXIDIZING AGENTS. WE ADDRESSED THIS SAME PROBLEM ON A/C G-V S/N 584 IN AUGUST OF THIS YEAR.