What was found
PDX - LEFT ENG BLEED CAUTION MSG AFTER TAKEOFF. NO FAULTS REPORTED IN MDC, PERFORMED GVI OF L BLEED LOOPS, NO DEFECTS FOUND. FOUND SMALL AIR LEAK ON L AIR CONDITIONING PACK, TIGHTENED V BAND CLAMP, NO FURTHER LEAKS FOUND. PERFORMED BLEED - AIR LEAK DET & WARNING SYST OPS CHECK. OPS CHECK GOOD. GROUND RAN AIRCRAFT AT TAKEOFF FOR APPROX 5 MIN & CLIMB FOR 2 MIN. NO CAUTION MSGS OR FAULTS OK FOR CONTINUED SERVICE. NO PARTS REPLACED.