What was found
PDX - PROX SYSTEM CAUTION (W/PROX SYS 2 STATUS MSG) MSG, RETURNED TO FIELD. INTERROGATED MDC, LDG GEAR HANDLE D106 AND LDG GEAR SEL VLV D043/D063 FAULTS NOTED ON NOV 21, 2008 AS SINGLE OCCURRENCES IN MDC HISTORY. TROUBLESHOT LANDING GEAR HANDLE IAW CRJ-700 FIM 32-31-05-810-802-A01, HANDLE PREVIOUSLY REMOVED AND REPLACED. RESISTANCE AND SHORT CHECKS OF WIRING IN FIM TASK OK. TROUBLESHOT LANDING GEAR SEL VLV IAW CRJ-700 FIM TASK 32-32-10-810-801-A01, VALVE PREVIOUSLY REMOVED AND REPLACED IN HISTORY. RESISTANCE AND SHORT CHECK OF WIRING IN FIM TASK OK. REMOVED AND REPLACED NR 3 SYSTEM PRIORITY BALANCE RELIEF VALVE, AS A PRECAUTIONARY MEASURE IAW CRJ-700 AMM TASKS 29-12-05-000-802-A01 AND 29-12-05-400-802-A01. LEAKS AND OPS CHECK GOOD. PERFORMED EXTENSION/RETRACTION OF LANDING GEAR IAW CRJ-700 AMM TASK 32-30-00-865-801-A01, NO FAULTS OR DEFECTS NOTED. RETURNED TO SERVICE.