What was found
PNEUMATIC INDICATION: AMBER CAS BLEED O'PRESS L ANNUNCIATION SHORTLY AFTER TAKEOFF. EMERGENCY/ABNORMAL CHECKLIST 13D COMPLETED. CORRECTIVE ACTION: REFER TO STEP 3.2,1 FOR WORK PERFORMED. INTERROGATED CMC FOR FAULTS, BLEED O PRESS L PRESENT IN HISTORY. PULLED AND FLAGGED CIRCUIT BREAKERS. REMOVED PANEL UNDER PYLON TO GAIN ACCESS TO LH ENGINE BLEED PRSOV. MULTIPLE STRIPPED SCREWS FOUND. REMOVED AND REPLACED LH BLEED PRSOV WITH NEW GASKETS. RE ENGAGED CIRCUIT BREAKERS THAT WERE PULLED FOR MX. PERFORMED ENGINE RUNS FOR LEAK AND OPERATIONAL CHECKS. RE INSTALLED PANELS REMOVED FOR ACCESS. REPLACED STRIPPED HARDWARE. OPS AND LEAK CHECKS GOOD, NO FAULTS PRESENT. REF CE700 AMM 36-12-10.