What was found
REJECTED TAKEOFF SUSPECTED COMPRESSOR STALL ON TAKEOFF RUN ON IN ITIAL POWER UP DEBRIEFED BY FLIGHT CREW AS FOLLOWED SPEED LESS THAN 80 KTS DURING INCIDENT, NO OTHER PARAMETER FLUCTUATIONS OR SPIKES REPORTED BY PILOTS INCLUDING EGT & FF. CONTINUOUS 5-10 SEC FLAME ON RT ENG EXHAUST REPORTED BY FLT ATTENDS. PERFORMED BVCU BITE PROCEDURE IAW 75-32, FAULT TREE 824. FOUND BVCU FAULT CODE 04 SHOWN ALONG WITH TPU FAULT CODE 40 & BOTH ARE PRECEDED BY SAME FLT MARKER (FO TO F9). REPLACED PLA/BVCU TRANSDUCER IAW AMM 75-32-14-401. DUE TO HAVING 04 AND 40 COMBINED, REPLACE TPU. R & R NR 2 ENG IAW TASK CARD 19-7100-1-0012