What was found
PDX: C3 CHECK, UPPER TCAS ANTENNA - THE 2 AFT NUT PLATES SPIN/DAMAGED. MAINTENANCE REPAIRED IAW Q400 SRM 51-42-05 AND SRM 51-23-00.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PDX: C3 CHECK, UPPER TCAS ANTENNA - THE 2 AFT NUT PLATES SPIN/DAMAGED. MAINTENANCE REPAIRED IAW Q400 SRM 51-42-05 AND SRM 51-23-00.