As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
1 VHF COMM CONTROL PANEL HAS MECHANICAL DEFECT. BROKEN, MISSING OR LOOSE PARTS. (01=L VHF, 02=R VHF) COPILOTS L-VHF SELECTOR SWITCH BROKEN. WILL NOT STAY IN WHEN PUSHED. WON'T DESELECT OTHER SWITCHES. SWAPPED WITH F/O WITH 1ST OBSERVER. NEED TO REPLACE 1ST OBSERVER'S AUDIO SELECT PANEL MR23524. REPLACED NR3 AUDIO CONTROL PANEL IAW MM, TEST OK.