What was found
AFTER TAKEOFF, GEAR HANDLE SLECTED TO UP POSITION. NO GEAR SEQUENCE ACTION TOOK PLACE WITH ALL THREE GREEN INDICATIONS VISIBLE & NO RED GEAR LIGHTS. AFTER 20 SECONDS GEAR HANDLE BEGAN TO FLASH RED. FIVE SECONDS LATER, GEAR BEGAN TO SEQUENCE AUTOMATICALLY & ALL THREE GEAR RETRACTED WITH NO RED GEAR INDICATIONS. GEAR SELECTED DOWN & AFTER FIVE SECONDS, SEQUENCE BEGAN, & ALL GREEN DOWN GEAR LIGHTS DISPLAYED WITH NO RED LIGHTS. BOTH RED "STEERING" & "BRAKE" MINELCOS VISIBLE, FAULT CODES 315, STRUT PROXIMITY SWITCH FAILURE & 415, STRUT PROXIMITY SWITCH FAILURE. FAULT CODE 415 IS A REPEAT. RESEARCHED DISCREPANCY & MCC SUPPLIED HISTORY. PERFORMED ACFT MM TASK 32-30-00-720-801, NORMAL OPERATION. FUNCTIONAL TEST OF EXTENSION & RETRACTION OF LANDING GEAR AND DOORS. ABLE TO INTERMITTENTLY DUPLICATE DISCREPANCY TWO TIMES WITH 30 CYCLES OF GEAR. CHECK INPUT POWER TO V1 OF RELAY AND WAS ABLE TO DUPLICATED A EXTENDED DELAY OF POWER WHILE CYCLING GEAR HANDLE. MONITORED POWER AT 10GW-6 & GROUND AT 10GW-2, NO DEFECTS NOTED. GEAR HANDLE 100GM PREVIOSULY REPLACED, SUSPECT INTERMITTENT TIME DELAY ON 10GW. R & R PCB 10GW, IAW MM TASK 20-00-00-910-803, PERFORMED MM TASK 32-30-00-720-801-01, NORMAL OPS & FUNCTIONAL TEST OF EXTENSION & RETRACTION OF LANDING GEAR & DOORS. CYCLED GEAR 30 TIMES WITH NO FURTHER DEFECTS NOTED.