As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU LOW OIL PRESSURE LIGHT, LIGHT ON, APU OPERATES WITH NO PROTECTIVE SHUTDOWN. PERFORMED APU BITE CK, FOUND MX MSG 49-91007. FLWG FIM TASK 49-0-00-810-803, NO TROUBLE FOUND. NO ADDED APU OIL. APU OPS & APU IND ALL NORMAL. A/C BACK IN SERVICE. TOMC EMC DESK NOTIFIED.