As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPT HEADSET CANNOT RECEIVE. STARTED DURING DESCENT. SPEAKER AND TRANSMIT WORKS FINE. REPLACED VHF 1. SYSTEM CHECKS NORMAL WHILE AT THE GATE USING 128.95. CAPTS HEADSET STILL INOP, COMPLIED WITH MEL. LOSS OF TRANSMISSION FROM CAPT'S BOOMSET- NEED AMU (1RN). REPLACED AMU REF MM 23-51-34, SYSTEM CHECKS NORMAL AT THE GATE.