What was found
WHILE IN HEAVY CHECK - CORROSION ON INTERNAL DOUBLER FOR AFT HEATED DRAIN MAST AT FR 86-87 STGR 27R-28R. REMOVED AND REPLACED INTERNAL DOUBLER FOR AFT HEATED DRAIN MAST BETWEEN FR 86-87 STGR 27R-28R.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE IN HEAVY CHECK - CORROSION ON INTERNAL DOUBLER FOR AFT HEATED DRAIN MAST AT FR 86-87 STGR 27R-28R. REMOVED AND REPLACED INTERNAL DOUBLER FOR AFT HEATED DRAIN MAST BETWEEN FR 86-87 STGR 27R-28R.