What was found
ASPIRATOR HAS DAMAGED FLAPPER VALVE. FAILED AIR RETENTION TEST DUE TO LEAKING OF VALVE. SUPPLEMENTAL DATA UPDATE SLIDE/RAFT WAS REMOVED FROM AIRCRAFT AT NORMAL MAINTENANCE INTERVAL. DISCREPANT ASPIRATOR WAS OBSERVED DURING SLIDE/RAFT OVERHAUL AIR RETENTION TEST. FAILED AIR RETENTION TEST DUE TO DAMAGED ASPIRATOR FLAPPER VALVE LEAKING. CAUSE OF FLAPPER VALVE DAMAGE HAS NOT BEEN DETERMINED. ASPIRATOR WAS REPLACED PER AIR CRUISERS CMM 25-61-32.