What was found
PRESSURIZATION LEAK HEARD AT DOOR L1 EXTREMLY LOUD AT 8000 FEET. PILOT AND CABIN CREW STATED IT WAS DOOR 1L FA REPORTED SQUEALS HEARD FROM BOTTOM LEFT OF DOOR 1L. PILOTS STATED AT 10000FT PRESSURE RATE FLUCTUATED TO NEGATIVE RATE .5 TO 1, RESULTING CABIN PRESSURE INCREASING TO 5PSI AT A POINT. PRESSURIZED AIRCRAFT AND FOUND LEAK AND LOUD NOISE COMING FROM DOOR 1R LOWER FWD AREA. FOUND UNEVEN DOOR SEAL SURFACE ON DOOR SCUFF PLATE. RESEALED DOOR SEAL SURFACE. ALSO FOUND LEAKS ON DOOR 1L DOOR LOWER SCUFF PLATE. RESEALED SCUFF PLATE TRANSITION JOINTS. REF. AMM 53-11-01-420-801. LEAK CHECKED DOOR 1L GOOD AND NO ABNORMAL HIGH LEVEL OF NOISE DETECTED. REF. AMM 5-51-91.