As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PNEUMATIC LINE PROVIDES FOR A MOISTURE DRAIN POINT FOR THE PNEUMATIC MANIFOLD WHICH PROVIDES REGULATED AIR PRESSURE TO THE HYDRAULIC PACKAGE THE PRIMARY OUTFLOW VALVE, THE COCKPIT ALTERNATE AIR VALVE AND PASSENGER DOOR SEAL. LINE IS BULGED AND SPLIT 1.250 INCHES FROM LOWER END. PROBABLE CAUSE WAS FREEZING OF ACCUMULATED MOISTURE IN LINE.