What was found
LEFT BLEED TRIP OFF LIGHT ILLUMINATED, CREW TRIED RESET, NO JOY. TO PRSOV, REF IPC 36-11-51-02A, ITEM #30. NEEDS ENGINE RUN ABOVE BLEED SHIFT TO CONFIRM FIX, TEST #5 AMM 71-00-00-700-813-F00, OF POWER PLANT TEST REFERANCE TABLE. CREW STATED IT WAS A NO BLEED TAKE-OFF. AFTER CLIMB OUT, CREW ACP PNEUMATIC HEALTH CHECK ON #1 ENGINE IAW AMM RE-CONFIGURED PER CHECKLIST, AFTER ABOUT 30 SECONDS WITH BLEEDS 36-11-00-700-801, FOUND CONTROL PRESSURE FLEXIBLE SENSE LINE ON, LEFT BLEED TRIP OFF LIGHT ILLUMINATED. LEAKING TO PRSOV. HSV, PRSOV, BOTH REGULATORS, PCCV & ALL OTHER FLEXIBLE AND HARD LINES GOOD. REPLACED BAD FLEXIBLE SENSE LINE ACCOMPLISHED POWER ASSURANCE TEST REF MM71-00-00 TEST #5 BLEED SHIFT NORMAL PRSOV OPERATION NORMAL