What was found
ON APPROACH, STATUS MSG PACK ACM R. CONFIRMED ACM FAILURE. NEEDS ACM. REPLACED SEIZED ACM, OPS CHECK GOOD. ALSO FOUND LOW LIMIT VALVE BUTTERFLY DISK NOT CLOSING. REPLACED IAW MM, NO HELP. ALSO CHECKED RAM AIR INLET FOR BLOCKAGE IT WAS CLEAN. REPLACED ECONOMY COOLING VALVE, NO HELP. ATTEMPTS TO MEASURE PACK FLOW RESULTED WITH LATCHED STATUS MSG "RT PACK ACM" SHORTLY AFTER SELECTING PACK TO "ON" WITH SYNOPTICS SHOWING PACK "STBY COOLING"- SUSPECT RECENTLY RPL'D ACM ALREADY DAMAGED FROM CLOGGED CONDENSER-REHEATER. REPLACED SUSPECTED CLOGGED UNIT (P/N 810210-2L2, S/N OFF 43 -ON 42).