What was found
ON TAKEOFF, COMPRESSOR STALL, ABORTED TAKEOFF. SUSPECT NR 4 ENGINE. CONDUCTED ENGINE RUN ON NR 4 ENGINE AND BLEED AIR CHECK WITH OPERATING FLIGHT CREW, OPS CHECK GOOD IAW MM 75-00. PERFORMED FOD CHECK OF INLET AND EXHAUST, OK. FLAG CHECK, NO FOD NOTED, FLAG CHECK GOOD IAW MM 76-00.