What was found
CLT FLT900 AFTER TAKEOFF FROM MBJ, EN ROUTE TO CLT, CREW RECEIVED ECAM WARNINGS: -ENGINE 2 REVERSER FAULT-, -ANTI-ICE CAPTAIN'S PITOT- AND -GEAR WOULD NOT RETRACT-. CREW RECYCLED LANDING GEAR AND A NORMAL GEAR RETRACTION COMMENCED. FIVE MINUTES LATER, BOTH ECAM'S CORRECTED THEMSELVES. FLIGHT CONTINUED ONTO CLT. AFTER LANDING IN CLT, ECAM L/G SYS DISAGREE OCCURRED. AT GATE, NO ECAM. MAINTENANCE ACCOMPLISHED BITE TEST ON LGCIU 1 AND 2. NO FAULTS NOTED PER TASK 32-69-00-05-740-01. NO PREVIOUS HISTORY. AIRCRAFT OK FOR SERVICE. MAINTENANCE REPLACED LEFT LANDING GEAR PROXIMITY SWITCH, FIN 23GA, ON 12/20/06.