What was found
(CAN) MEDIC`S VHF RADIO STATION AND SAT PHONE REPORTED FOR TEMPORARILY POWER LOSS DURING FLIGHT. DURING MAINTENANCE TROUBLESHOOTING, TESTING OF THE SYSTEMS RESULTED IN TOTAL LOSS OF MEDIC`S RADIOS, PILOT`S TAC COMM ,AND MOST OF MEDIC`S ESSENTIAL BUS. FOUND LOOSE WIRES ON MEDIC`S ESSENTIAL AND NON ESSENTIAL BUS SWITCHES. ALL WIRES RECONNECTED AND SYSTEMS POWERED UP WITH APU POWER. SATISFACTORY POWER UP OF ALL MEDIC`S RADIOS AND SAT PHONE CARRIED OUT. AS A PRECAUTIONARY MEASURE, A SIMILAR VISUAL INSPECTION IN THE SAME AREA WAS PERFORMED FOR THE OTHER ACFT IN THE FLEET WITH NO FAULTS FOUND.