What was found
CLT - DURING TEST, RECEIVED CIDS FAULT, "EPSU EXT LOAD MID L". MAINTENANCE REPLACED THE MID-CABIN, LEFT EMERGENCY POWER SUPPLY UNIT. OPERATIONALLY CHECKS OK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
CLT - DURING TEST, RECEIVED CIDS FAULT, "EPSU EXT LOAD MID L". MAINTENANCE REPLACED THE MID-CABIN, LEFT EMERGENCY POWER SUPPLY UNIT. OPERATIONALLY CHECKS OK.