What was found
RIGHT MLG LANDING GEAR RETRACTION DID NOT RETRACT - ON GEAR RETRACTION WE HAD AMBER GEAR DISAGREE LIGHT WITH THE RIGHT MAIN NOT RETRACTED CYCLED DOWN IAW CHECKLIST PROCEDURE AND RETURNED TO DEPARTURE AIRFIELD *** CORRECTIVE ACTION *** INTERROGATED ARES DATA. FOUND FAULT ON 5/13/2020 WAS DUE TO RH GEAR UPLOCK SWITCH NOT BEING MADE. JACKED AIRCRAFT AND CYCLED GEAR. COMPLETED MULTIPLE GEAR SWINGS, UNABLE TO DUPLICATE FAULT. DISCONNECTED CANNON PLUG PG002 MAIN GEAR PLUG AND METERED PINS 24 AND 25 AND READ OPEN WHEN SWITCH WAS ACTUATED (FAIL) THEN METERED PINS 25 AND 26 WHEN THE SWITCH WAS NOT ACTUATED READINGS SHOWED .5 OHMS(GOOD), THEN METERED PINS 27 AND 28 READ .5 OHMS(GOOD) WHEN SWITCH WAS ACTUATED THEN METERED PINS 28 AND 29 AND READINGS SHOWED .5OHMS(GOOD) WHEN SWITCH WAS NOT ACTUATED. THEN TO ENSURE THAT IT WAS NOT WIRING WE DISCONNECTED PG008 RH MAIN LANDING GEAR UPLOCK SWITCH AND TOOK ALL READINGS AGAIN PINS A AND B (PINS 24 AND 25 ON PG002) THE SWITCH STILL READ OPEN WHEN SWITCH WAS ACTUATED. AFTER LEAVING THE METER CONNECTED AND DEPRESSING THE SWITCH IN RAPID SUCCESSION THEN CONTACTS WOULD INTERMITTENTLY READ .7 OHMS THEN AFTER A FEW MORE ACTUATIONS THE READINGS WOULD READ OPEN SWITCH IS CONFIRMED BAD. REMOVED SWITCH P/N 65-430087 S/N N/A. INSTALLED REPLACEMENT SWITCH P/N 65-430087 S/N N/A. ACCOMPLISHED RIGGING AND OPERATIONAL CHECKS. NO FAULTS FOUND DURING OPERATIONAL CHECKS. WORK DONE IAW MODEL 680A MAINTENANCE MANUAL REV. 11 CH.32-32-25-4