What was found
PILOT REPORTED RT MAIN LANDING GEAR DID NOT INDICATE DOWN AND LOCKED AND THE LANDING GEAR SELECTOR DID NOT RETURN TO NEUTRAL WITH NORMAL OR EMERGENCY HAND PUMP OPERATION. AFTER AN UNEVENTFUL LANDING WAS MADE, ACFT DELIVERED TO MAINT. MAINT DETERMINED THE RT MLG DOWN AND LOCKED SWITCH WAS DEFECTIVE PREVENTING A GREEN GEAR INDICATION AND PREVENTING THE INNER LANDING GEAR DOORS FROM CLOSING. A NEW SWITCH WAS INSTALLED IAW THE PIPER MM. THE GEAR WAS OPERATIONALLY CHECKED AND THE ACFT RETURNED TO SERVICE. THE SWITCH APPEARED TO BE THE ORIGINAL ONE INSTALLED AT BUILD. SUSPECT SWITCH FAILED DUE TO NORMAL WEAR AND TEAR.