What was found
DURING A-CHECK THE AFT EMERGENCY POWER SUPPLY UNIT TEST FAILED. REPLACED EPSU 32-3350-9-0010 S/N 01997 AND BATTERY PACK 32-3300-4-0074.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING A-CHECK THE AFT EMERGENCY POWER SUPPLY UNIT TEST FAILED. REPLACED EPSU 32-3350-9-0010 S/N 01997 AND BATTERY PACK 32-3300-4-0074.