What was found
ON FLIGHT 2897 THE CREW REPORTED THAT BOTH PACKS FAILED INTERMITTENTLY DURING CLIMBOUT AND CONTINUED TO SO THROUGHOUT THE FLIGHT. THE CREW DECLARED AN EMERGENCY AND ELECTED TO RETURN TO FSM. THE AIRCRAFT LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. FOUND SLEEVES BEHIND AIR CYCLE MACHINE DISCONNECTED, CONNECTED SLEEVES AND REMOVED AND REPLACED BOTH BLOWN SLEEVES ON THE LEFT AND RIGHT PACK IAW EMB 145 AMM 21-20-04. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.