What was found
BURNING ODOR REPORTED BY FA AFTER TOUCHDOWN. LOCATED IN AFT GALLEY. CREW REPORTS ODOR FROM AFT GALLEY NO SMOKE. DISAPATED AFTER LANDING. OVENS IN AFT GALLEY NEVER USED INFLIGHT. BREAKERS IN AFT GALLEY NONE FOUND OPEN. NO ODOR DURING START OF TROUBLESHOOTING AFT GALLEY COFFEE MAKERS REMOVED FOUND NO DAMAGE OR ODORS. REINSTALLED BOTH COFFEE MAKERS IAW AMM 25-34-00. OVENS OPS CHECKED, NO UNSUAL ODORS FOUND IAW AMM 25-34-00. PREFORMED DUEL ENGINE IDLE RUN FOUND WHEN APU BLEED IS RUNNING & PACKS ARE ON, FLIGHT DECK & AFT GALLEY ODORS LIKE HYD FLUID. WHEN BOTH ENG BLEEDS ARE ON AND APU BLEED IS OFF HYD ODOR SLOWLY FADES AWAY AT GASPERS. INSPECTED APU BAY FOUND NO LEAKS. LOOKED IN THE BAY AT THE STABILIZER TRIM ACCESS DOOR NO LEAKS NOTED. FOLLOWING AMM 05-51-26-800-801-C1 NEXT STEP IS D 1) (B) OPEN APU PNEUMATIC DUCT DOWN STREAM OF APU BLEED VALVE AND INSPECT INSIDE OF DUCT FOR OIL CONTAMINATION. PERFOMED INSPECTION OF APU BLEED DUCT FOR CONTAMINATION OF OIL REF. AMM 05-51-26-800-801-C1 .NO EVIDENCE OF OIL ON THE APU BLEED AIR DUCT.REMOVED AND INTALLED APU BLEED AIR DUCT REF. AMM 49-52-11 PERFORMED ENGINE RUN AND FOUND RIGHT ENGINE DUCT PRESSURE FLUCTUATING, TURNED ENGINE 2 BLEED SWITCH OFF AND TURNED APU BLEED SWITCH ON AND SMELL INTENSIFIED IN FLIGHT DECK REF AMM 5-51-26 PERFORMED EXTERNAL OIL SYSTEM INSPECTION REF. AMM 79-00-00-601. PERFORMED ENGINE VENTS AND DRAINS INSPECTION REF. AMM 71-71-00-601 .NO LEAKAGE FOUND. PERFORMED EXTERNAL OLIGHTS AT ALL ARE OK. CABIN INTERIOR.