As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: FAULT EPSU AT ROW 11 LH PASSENGER CABIN FIN 11WL AND FAULT EPSU AT ROW 11 RH PASSENGER CABIN FIN 12WL; REF AEWROMAN NR 2024-444555 WO 2024 266/1 PERFORMED TSM 33-51-00-810-822A & TSM 33-51-00-810-806A R & R EPSU 11WL DEU 300RHA & 200RH20 IAW AMM 23-73-46-000-001A BITE TEST OF EPSU OK.