As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) A BROKEN WIRE SHORTED TO GROUND ON CAPTAINS HAND MIKE JACK LOCATED ON LOWER CONTROL COLUMN PREVENTED NORMAL VHF TANSMISSION. PILOTS OXYGEN MASK SELECTED TO EMERGENCY (EMERGENCY MIRE POSITION)AND COMMUNICATIONS WERE RESTORED. WIRE REPAIRED PER DRAWING WITH NO FUTHER PROBLEMS REPORTED.