What was found
AFTER GEAR EXTENSION, ECAM FOR LANDING GEAR RETRACT INOPERATIVE ILLUMINATED. ALL INDICATIONS GREEN. R & R THE PROXIMITY DETECTOR UNIT IAW AMM 32-31-71-0401, AND LANDING GEAR NORMAL CONTROL SWITCH UNIT 2GA IAW AMM 32-31-11-0401. ACCOMPLISHED LANDING EXTENSION AND RETRACTION AND INDICATION TEST MM 32-61-00-0501 GEAR SWING NORMAL ALL TESTS GOOD.