As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN & FIRST OFFICER`S PFD RADIO ALTITUDE READING OUT OF LIMITS. CAPTAIN`S READS 2 &, FIRST OFFICER`S READS 2. CLEANED LT TRANSMIT ANTENNA CONNECTOR & CLEANED RT TRANSMIT & RECEIVE ANTENNA CONNECTORS, NOW WITHIN TOLERANCE, GND TEST PASSED.