What was found
PHX-MKE - FLT 1956 - AIR TURNBACK - RIGHT MAIN GEAR DOOR DID NOT INDICATE UP AND LOCKED. AIRCRAFT RETURNED TO PHX AND LANDED WITHOUT FURTHER PROBLEMS. MAINTENANCE FOUND RT GEAR DOOR PROXIMITY SENSOR '26GA' INTERMITTENT. MAINTENANCE REMOVED AND REPLACED NR 2 RT MLG DOOR UPLOCK PROXIMITY SWITCH PER MM 32-31-73. PERFORMED NR 1 AND NR 2 LGCIU BITE TEST, BOTH SYSTEMS CHECK OK. AIRCRAFT RETURNED TO SERVICE. (Z)