As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) COCKPIT CONTROL TUBE ASSEMBLY RUBBING ON INTERNAL VHF COMM ANTENNA DOUBLER: INVESTIGATION FOUND THAT DUE TO THE LIGHT GAUGE, 0.025", OF BOTTOM AFT PANEL AND UNDERSIZE OF THE VHF COMM ANTENNA DOUBLER, AIR LOAD CAUSES DOUBLER TO CONTACT THE COCKPIT CONTROL TUBE ASSY. INTERNAL ANTENNA DOUBLER REMOVED AND NEW EXTERNAL ANTENNA DOUBLER INSTALLED AS REQUIRED. CLEARANCES CHECKED UNDER LOAD. NO FURTHER FAULTS FOUND.