What was found
NR 1 ENGINE WOULD NOT PRODUCE MORE THAN 38 PERCENT DURING TAKEOFF ROLL. REJECTED TAKEOFF. FOUND INTAKE PLUG LODGED INTO NR 1 ENGINE INTAKE, FWD OF IMPELLER. REMOVED PLUG, INSPECTED LP AND HP IMPELLERS. NO EVIDENCE OF DAMAGE OR SOFT MATERIAL INGESTION. REF MM 05-50-00 AND 72-00-00. PERFORMED POWER ASSURANCE RUN IAW WC 72-00-10.NP 6, NL3 NH2.5,T6 23 TQ 90,WF 27.