What was found
PHL - THE EMERGENCY POWER SUPPLY UNIT IN THE AFT LEFT POSITION FAILED THE TEST. MAINTENANCE REMOVED AND REPLACED THE AFT LEFT EMERGENCY POWER SUPPLY UNIT. OPS CHECK NORMAL. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PHL - THE EMERGENCY POWER SUPPLY UNIT IN THE AFT LEFT POSITION FAILED THE TEST. MAINTENANCE REMOVED AND REPLACED THE AFT LEFT EMERGENCY POWER SUPPLY UNIT. OPS CHECK NORMAL. (M)