As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT PYLON OVERHEAT INDICATION OCCURRED IN FLIGHT. FOUND HIGH PRESSURE BLEED AIR MANIFOLD MATING FLANGE DEFORMED. REPLACED ASSY 4536102150V43-1 WITH NAV ASSY 45361020228-001. CAUSE MAY BE AGE OR REPEATED CLAMPING. ORIGINAL PART HAS BEEN SUPERSEDED BY THE MFG. (K)