As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ENG PRV LIGHT MOMENTARILY ON TAKEOFF ROLL AND TWICE IN DESCENT WITH REDUCED POWER. REPLACED RT ENG PRV AS PER MM. ALL OPS AND IND NORMAL. PROBLEM RECURRED ON NEXT SEGMENT. REPLACED PRV NR 2 ENGINE IAW AMM. RAN ENGINE FOUND LIGHT FOR ENGINE STILL FLICKERS AFTER 55 N1. REMOVED AND REPLACED RIGHT ENG BLEED AIR CONTROL CARD ASSY AS PER MM, PERFORMED ENG RUN, OPS CHECKED GOOD.