As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HEAVY CORROSION BUILD UP UNDER OUTER PLASTIC SLEEVE ON EXTERIOR HYDRAULIC SYSTEM FLEX HOSES MOSTLY IN THE LANDING GEAR AREA DUE TO WATER OR DISSIMILAR METAL. THIS ONLY NOTED ON 700 SERIES AIRCRAFT. REC. SB OR SL TO LOOK FOR BULGING AT METAL BRAID HOSE WHERE HOSE MEETS THE (B) NUT FITTING.