What was found
BOS - THE LEFT EMERGENCY LIGHT POWER SUPPLY FAULTED DURING TEST. MAINTENANCE REPLACED THE LEFT, MID CABIN EMERGENCY POWER SUPPLY UNIT. OPS CHECKS OK. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BOS - THE LEFT EMERGENCY LIGHT POWER SUPPLY FAULTED DURING TEST. MAINTENANCE REPLACED THE LEFT, MID CABIN EMERGENCY POWER SUPPLY UNIT. OPS CHECKS OK. (M)