What was found
DURING CRUISE, FLT ENGINEER TRIED TO SEND DEPARTURE MESSAGE, BUT BOTH VHF 1 AND 2 WOULD NOT TRANSMIT. THE CREW UNPLUGGED CAPTAIN, FO, AND FLT ENGINEER MIC’S. NR 1 VHF WOULD WORK IF FO MIC WAS NOT PLUGGED IN. FO RECEIVED A SHOCK WHEN MIC WAS UNPLUGGED. THE CREW RETURNED TO DEPARTURE WITHOUT FURTHER INCIDENT. MX REPLACED FO’S MIC JACK, NR 1 VHF TRANSCEIVER, AND FO’S INTERPHONE CONTROL PANEL MOUNT AND CONNECTOR PLUGS. OPS CHECK GOOD IAW DACO 23-41-1, WD 23-04-02, 23-20-0, AND 23-41-0. ACFT WAS RETURNED TO SERVICE.