What was found
FLT 2220 (8613), LHR - JFK. F/A REPORTED DIRTY SOCK ODOR ON DESCENT IN REAR GALLEY. COMPLIED WITH INFORMATION NOTICE 2017-T015, STEP 1. ISOLATED FAULT TO TYPE 10. HIGH COFFEE BURNING SCENT IN THE AFT GALLEY. COFFEEMAKERS & HOT PLATE CLEANED. ALSO PERFORMED APU BLACK LIGHT INSPECTION, RAN BOTH ENGINES & OPS BOTH PACKS. NO ODOR NOTED IAW TSM 05-50-00-810-085-D. AIRCRAFT OK FOR SERVICE.