As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POST A CHECK FLIGHT VERIFICATION FAILED APU STARTED NORMALLY AT 41000 RAN FOR APPROX 5 MINUTES THEN SHUT DOWN WITH OIL LOW PRESS LIGHT ILLUMINATED. REPLACED LOW OIL PRESSURE SWITCH PER MM 49 94 22 400 801. PERFORMED OPERATION AND BITE CHECK. OPERATION NORMAL, NO LEAKS AND NO NEW FAULTS.