What was found
EN ROUTE TO BRW, FLIGHT CREW HEARD STATIC IN HEADSET, SAW LOADMETER 'SPIKE' AND THE LANDING GEAR CONTROL CIRCUIT BREAKER TRIPPED. FLIGHT CREW RESET CIRCUIT BREAKER AND DESCENDED TO BRW. UPON SELECTING LANDING GEAR DOWN, GEAR WOULD NOT EXTEND. MANUALLY EXTENDED GEAR AND LANDED WITHOUT INCIDENT. FERRIED AIRCRAFT TO ANC WITH GEAR EXTENDED. LANDING GEAR WORKS CORRECTLY DURING HANGAR TESTS. TROUBLESHOOTING CONTINUING. FOUND CHAFED WIRE BUNDLE UNDER FLIGHT CABIN FLOOR.