As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STARTED APU IN SAN ELEC OK NO AIR PRESSURE WHEN APU BLEED OPEN. PERFORMED BITE TEST ON APU REF MM 49 61 00, NO FAULTS FOUND. RESTARTED APU AND APU BLEED WORKS NORMAL REF MM 49 11 00. NO HISTORY FOR 30 DAYS, GROUND VERIFICATION SATISFACTORY OK FOR SERVICE.