What was found
AC DID NOT PRESSURIZE AFTER TAKEOFF, NON NORMAL CHECKLIST NO HELP. LOUD NOISE IN FWD CABIN NEAR L1 NO DOOR LIGHTS. NO WARNING LIGHTS. PERFORMED EXCESSIVE CABIN PRESSURE LEAKAGE CK IAW AMM 05-51-91-2. AC PRESSURIZED NORMAL, NO EXCESSIVE LEAKS NOTED, PERFOMED DCPC BITE NR 1 AND NR 2, NO CURRENT FAULTS. (K)