What was found
DURING L4 DOOR SLIDE CHANGE. EPSU SYS TEST GOT EPSU (10WL) FWD L MSG. REPLACED EPSU FWD L BATTERY PER A321 AMM 33-51 OPS CHK NML. (LP 8568973 - AIRCRAFT WAS GROUNDED)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING L4 DOOR SLIDE CHANGE. EPSU SYS TEST GOT EPSU (10WL) FWD L MSG. REPLACED EPSU FWD L BATTERY PER A321 AMM 33-51 OPS CHK NML. (LP 8568973 - AIRCRAFT WAS GROUNDED)