What was found
DURING TAXI NOTICED STRONG ELECTRICAL BURNING ODOR ON FLT DECK. CHANGING PACKS AND BLEED SOURCE HAD NO EFFECT. STRONGEST SMELL IN NR 2 CBP AREA AND RT GALLEY AREA BY SERVICE DOOR. (GATE RETURN) ( HYD AC MOTOR PUMPS (ACMP) (SYS 1 AND 2) ACMP 1B ) ( HYD AC MOTOR PUMPS (ACMP) (SYS 1 AND 2) ACMP 1B ) (ITEM RESOLVE UNDER MDDR: 558994-2) R & R BURNED C/B A1 HYD NR1 IAW ESPM, REPLACED TERMINAL TO C/B A6 HYD PUMP NR1 IAW ESPM, PERFORMED FUNCTION TEST OF HYD SYS NR1 AND NR2 IAW AMM 29-10-00-720-801.