As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT HAS BEEN OUT OF SERVICE FOR EXTENDED MAINTENANCE DUE TO TAIL STRIKE. REFERENCE NR 133338, EMERGENCY POWER SUPPLY UNIT (EPSU) FIN# 17WL FAILED BITE TEST. REMOVED AND REPLACED EPSU BATTERY 3214-62-10 S/N 183291 WITH P/N 3214-62-10 S/N 009021. OPS CHECK GOOD.