What was found
AIR TURN BACK, NOSE GEAR GREEN DOWN LIGHT WOULD NOT GO OUT. JACKED AIRCRAFT AND CLEANED DOWNLOCK SWITCH, GEAR SWING OPS CHECKED OK. ON ARRIVAL AT PSP PM, SAME DAY SWITCH STUCK AGAIN. CAPTAIN REQUESTED TOWER CHECK AND OK. MANUAL INDICATION OK. AIRCRAFT FERRIED TO FAT. SWITCH REPLACED AND GEAR SWING CHECK OK. (M)