What was found
INFLIGHT AT 34000 FEET. HEARD A POP FROM NOSE OF AIRCRAFT. 2-3 SECONDS LATER, GEAR DISAGREE WARNING MESSAGE. WOW INPUT CAUTION. WOW OUTPUT CAUTION. PROX SYS CHAN CAUTION. L FADEC FAULT 2 STATUS MESSAGE. R FADEC FAULT 2 STATUS MESSAGE. IB GND SPLR FAULT STATUS MESSAGE FLIGHT 3705 - CLOSEDREMOVED AND REPLACED THE PROXIMITY ELECTRONICS CONTROL UNIT PSEU WITH A SERVICEABLE UNIT IN REFERENCE TO CRJ-900 AMM. JACKED AIRCRAFT , REFERENCE CRJ-900 AMM. PERFORMED NUMEROUS GEAR SWINGS AND NO DISCREPANCIES WERE NOTED. PERFORMED POWER UP TEST OF THE LANDING GEAR PSS IN REFERENCE TO CRJ-900 AMM. NO FAULTS FOUND. NO OTHER HISTORY NOTED. NO MDC MESSAGES OR EICAS MESSAGES POSTED. OK FOR CONTINUED SERVICE AT THIS TIME.