What was found
FLT # 1524, JFK-LAX. (ETOPS) PACK 2 REGULATOR SYSTEM IS INOP. R & R PACK #2 P2 RAM AIR ACTUATOR FIN 28HH, OPS CHK GOOD. SEE LP 4756177-2 (IN REF TSM 21-61-00-810-850-A, AND PREVIOUS MX TROUBLESHOOTING, AND MCC REQUEST. R/R PACK #2 P2 RAM AIR IN ACTUATOR (FIN: 28HH) IAW AMM 21-61-51. BITE TEST OK. STILL REQUIRES OPS TEST WITH ENGINE RUN DUE TO PHASE OF FAULT IS ON ENGINE START (IN REF TO HISTORY). MDDR REMAINS OPEN ) AND 4756178-1 (PERFORMED PACK 2 OPS CHECK WITH ENGINE RUNNING, OPS CHK GOOD, NO FAULT, REF AMM 71-00-00 AND 21-51-00). MX-4 UPDATED AND PLACARD REMOVED.