As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REF LGPG 4545587-2 TERRAIN AURAL WARNING MSG RANDOMLY CLIMBING OUT OF 6000FT UP TO ALTITUDE,DESENDING-TERRAIN MSG PERSISTED AND SINK RATE MSG ON APPROACH, ERRONEOUS MINIMUM CALL. AIRCRAFT REQ. INSPECTION FOR FERRY FLT. C/A-THIS AIRCRAFT HAS BEEN INSPECTED TO THE EXTENT NECESSARY FOR A FERRY FLT AND FOUND TO BE IN SAFE CONDITION FOR FERRY FLT.