As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:NA** ATB** AIR TURN BACK LOST COMMS BOTH RADIOS IN NORMAL. ALTERNATE ION RADIOS WAS BARELY AUDIBLE. LOUD SQUEAL ON NORMAL MODE ON RADIOSREF WDM 23-51-11 AT D08545 FOUND A-E SHORTED TO A-D REPLACED D08545 - NOSE GEAR FLIGHT INTERPHONE JACK. TEST GOOD REF MM 23-51-00-735-001-002-2 ESR EQUIP LIST D08545