What was found
CONTINUING HISTORY OF RIGHT ENGINE BLEED TRIP WITH NO ASSOCIATED SIGN OF DUCT SPLIT. UNABLE TO REPRODUCE BLEED TRIP INDICATION OR FOUND ANY DEFECTS ON HARNESS MW0311. REPLACED NR 2 ENG BLEED AIR REGULATOR IAW AMM 36 11 03 PAGE BLOCK 401. REPLACED NR 2 ENG MW0311 HARNESS IAW AMM 73 21 06 PAGE BLOCK 401. REPLACED NR 2 ENG BLEED AIR OVERTEMP SWITCH (S21) IAW AMM 36 11 08 PAGE BLOCK 401. ALL INSTALLATION TESTS ARE NORMAL. NO BLEED TRIP NOTICED ON GROUND USING NR 2 ENG BLEED AT IDLE RUN.