What was found
FLT NR 303, IAD-FLL, AIR ENG 1 BLEED ABNORMAL PRESSURE (SUBSEQUENT PACK 1/PACK 2-FAULT). FOUND AIR LEAK ON PRESSURE REG VALVE CLAMP JOINT. CLAMP WAS REMOVED AND JOINT RE-ALIGNED WITH VALVE. NO FURTHER AIR LEAK NOTED FAN AIR VALVE THERMOSTAT SEAL WAS REPLACED TO CORRECT AIR LEAKAGE AS PER AMM REF 36-11-43. NO FURTHER LEAKS NOTED. POWER ASSURANCE TEST ACCOMPLISHED AT 1.25 EPR. ENG NR 1 & 2 BLEED AND NACELLE TEMP PARAMETERS EXAMINED. NO DEFECTS NOTED. PARAMETERS WITHIN LIMITS. BLEED SYS 1 & 2 CHECKED BY ALTERNATE SYSTEMS. BLEED NR 1 NR 2 SYSTEMS OPERATE AS DESIGNED PER AMM REF 71-00-00-710-013A & REF 36-11-00-710-001.