What was found
PACK FCV L 1 (BUT NOT BOTH) OF THE 2 LT PACK FLOW CONTROL VALVES (FCV) ARE NOT IN THE COMMANDED POSITION. STATUS MSG-2124001 LATCHED ER MODE: DURING T-S OBSERVED LT LOWER FLOW CONTROL VALVE REMAINING FULLY OPEN EVEN SELECTING PACK OFF. LOCKED LWR FLOW CONTROL VALVE CLOSED IAW MEL 2151M. CREATED SEPARATE DEFERRAL FOR INOP OZONE CONVERTER AS CONSEQUENCE. MSG-2124001 LATCHD MODE. RPL LT PACK LOWER FCV, REOPENED BY OPBLM. PROBLEM RETURNED ON FIRST LEG MSG-2124001 LATCHD MODE. REPLACED CTC IAW MM, CK OK.