What was found
DURING A NON ROUTINE CHECK, FOUND THE EPSU AT 13 WL AFT FAILED SELF TEST. MAINTENANCE REPLACED EPSU AND FUNCTIONAL TEST WAS NORMAL. AIRCRAFT RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING A NON ROUTINE CHECK, FOUND THE EPSU AT 13 WL AFT FAILED SELF TEST. MAINTENANCE REPLACED EPSU AND FUNCTIONAL TEST WAS NORMAL. AIRCRAFT RETURNED TO SERVICE.