As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPT MIC STAYS HOT AND UNABLE TO SELECT VHF NR 1 AND VHF NR 2. SWITCHED TO CAPT ON 3 AND CLEARED HOT MIC. OK TO DF REF MEL 2351AK. REPLACED CAPT ACP. INSTALLED NEW ACP AMM & TESTED PER AMM. ALL TESTS OKAY. REV'D DF #060 AC OK FOR SERVICE.