What was found
IN FLIGHT, ACFT WOULD NOT PRESSURIZE IN AUTO, STANDBY OR MANUAL MODE. WITH ACFT AT 10000 FT PRESSURE CONTROLLER WOULD HOLD ABOUT 7000 FT CABIN ALTITUDE IN MANUAL WITH OUTFLOW VALVE FULLY CLOSED OR IN STANDBY MODE. DURING PRESSURIZATION CHECK, FOUND AIR LEAKING IN NOSE TRUNION AREA OF NOSE WHEEL WELL. INSPECTION FOUND ACCESS PANELS 3514, 3515, 3622 LEFT OPENED INSIDE LT AND RT OF NOSE TUNNEL IN FWD E/E COMPARTMENT. SECURED PANELS AND RECHECKED ACFT. PRESSURIZATION IAW MM 21-31-000-2. OPS AND LEAK CHECKS GOOD. ACFT. HOLDS NORMAL PRESSURIZATION, OK FOR SERVICE. SECURED PANELS CLOSED THAT WERE OPENED IN FWD AND AFT BAGGAGE COMPARTMENTS OPENED TO F.O.M. FINAL CLOSED.