As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRLINE REPORTED THE FOLLOWING APU AUTO SHUTDOWN WITH LARGE AMOUNT OF FUEL COMING OUT OF APU AREA. FUEL FOUND TO BE FROM FUEL LINE NOZZLE NEAR TOP ON LEFT SIDE OF APU. FUEL DID NOT IGNITE. MAIN FUEL MANIFOLD HAS ONE BROKEN TUBE BETWEEN THE FLEXIBLE FIRE SLEEVE AND THE B-NUT TO THE FUEL INJECTOR. MANIFOLD HAS 14 FUEL TUBES. MANIFOLD IS UNDERGOING DETAILED ANALYSIS.