What was found
REPEAT WRITE UP. REF LP 640979. DURING INITIAL CLIMB TO CRUISE ALTITUDE HEARD AND FELT RUMBLING TYPICALLY ASSOCIATED WITH A PACK, LASTING ONLY A FEW SECONDS. APPROXIMATELY 3 HOURS INTO FLIGHT SMELLED UNUSUAL ODOR. NR 1 PACK DEFERRED IAW MEL 21-51-1-0-1. DMP CARRIED OUT. FOUND FAIRING BROKEN IN INLET DOOR. REMOVED INLET DOOR & BROKEN FAIRING PER MM 21-55-01-4. INSTALLED NEW FAIRING & EXISTING INLET DOOR REF MM 21-55-01. OPS CK GOOD.