As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE RIGID STEEL TUBE THAT FEEDS INTO THE OIL/FUEL HEATER HAS DEVELOPED LITTLE PIN HOLES UNDERNEATH THE FIRE LOOP BRACKET THAT ATTACHES THERE. WHEN YOU TAKE THE LINE OFF, IT JUST LOOKS LIKE LITTLE DOTS OF CORROSION BUT WHEN YOU PRESSURIZE IT WITH AIR, IT LEAKS AT AN EXTREME RATE. POSSIBLE CAUSE COULD BE ADEL CLAMP CHAFING OR CORROSION.