As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 & NR 2 COM WERE INTERMITTENTLY INOP. AFTER NORMAL OPS DURING TAKEOFF, UNABLE TO RECEIVE APPROACH CONTROL AFTER BEING AIRBORNE APPROX 3 MINS. SWITCHED TO NR 2 COM WHICH INTERMITTENTLY FUNCTIONED NORMALLY AND THEN DID NOT WORK. REPLACED AUDIO ACCESS UNIT, BOTH VHF TRCVS, C/P AUDIO SEL PNL, BOTH FREQ CONT PNLS.