What was found
IN CLIMB WING ANTI-ICE FAIL ON EICAS, NO OPEN INSCRIPTION, RAN CHECKLIST CYCLED SWITCH, NO EFFECT. FLIGHT ATTENDANT REPORTED ICE ON ENGS WITH NO INDICATION OF ICE CONDITIONS AFTER CLEARING INITIAL ICE CONDITIONS. R & R NR 2 HEAT EXCHANGER DUCT ASSEMBLY & GRATE ASSEMBLY & NR 2 BLEED AIR DUCT IAW AMM 53-04-01 & AMM 36-11-09. ALSO PERFORMED OPERATIONAL CHECK OF WING ANTI-ICE & ENG ANTI-ICE FOUND WORKING PROPERLY IAW AMM 30-11-00 & AMM 30-21-00.