As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HOSE, P/N P610051, MELTED THROUGH AND BRITTLE. FACTORY SUGGESTED REPLACING HOSE WITH A HIGHER TEMPERATURE HOSE. LOUD AIR PRESSURE LEAK IN COCKPIT AREA. NO AIR PRESSURE INDICATION ON AIR PRESSURE GAUGE. HOSE RUNS FROM T-FITTING UNDER RIGHT AIR CONDITIONER EVAPORATOR TO FORWARD PRESSURE BULKHEAD.