What was found
AIRCRAFT WAS NOT GROUNDED: ESPU TEST FAILED DURING PS CHECK. MAINTENANCE REPLACED FORWARD LEFT ESPU BATTERY IAW AMM 33-51-38.OPS CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS NOT GROUNDED: ESPU TEST FAILED DURING PS CHECK. MAINTENANCE REPLACED FORWARD LEFT ESPU BATTERY IAW AMM 33-51-38.OPS CHECK GOOD.