What was found
AIRCRAFT WAS GROUNDED: EPSU L AFT COMM FAULT (13WL). MAINTENANCE REPLACED EPSU UNIT IAW AMM 33-51-38, NO FIX. REPLACED DEU-B (300RH5) IAW AMM 23-73-47.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED: EPSU L AFT COMM FAULT (13WL). MAINTENANCE REPLACED EPSU UNIT IAW AMM 33-51-38, NO FIX. REPLACED DEU-B (300RH5) IAW AMM 23-73-47.