What was found
FUEL FILTER BYPASS -R- CAS MESSAGE ILLUMINATED DURING TAKEOFF ROLL AT 50 KTS ALL OTHER INDICATIONS NORMAL, ABORTED TAKEOFF. REMOVED AND REPLACED FUEL FILTER ON RIGHT ENGINE REF ROLLS ROYCE MM CHAPTER 73-30-00. OPS CHECK AND LEAK CHECK GOOD, INSPECT BYPASS IMPENDING BUTTON FOUND LINT IN FILTER, BUT NO METAL.