As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING POST FLIGHT INSPECTION, FLUID WAS NOTICED ON THE APU COVER. APU COVER WAS REMOVED & COKING WAS FOUND AROUND THE APU IGNITOR. UPON FURTHER INVESTIGATION FOUND THE APU SECONDARY MANIFOLD RESTING ON THE IGNITOR BOSS WHICH RESULTED IN CHAFING ON THE LINE & FUEL LEAK. THE SECONDARY FUEL MANIFOLD WAS REPLACED. ACFT WAS RTS.