What was found
AFTER ENG START, NR 2 WITH AIRCART. AFT FA REPORTS CHEMICAL BURNING ODOR AFTER BLEED AIR & PACKS. PACKS/BLEEDS TURNED OFF AND FA REPORTS ODOR WAS DISSIPATING. PER MCC REQUEST BEGAN A LEVEL C DECONTAMINATION IAW AMM 21- 00-00-615-804-A THROUGH STEP 3. CONDENSOR 11HM2 SHOWS NO SIGNS OF CONTAMINATION AND CHECK VALVE 16HM SHOWS NO SIGNS OF CONTAMINATION. TRIM-AIR-PRESSURE-REGULATING VALVE ALSO SHOWS NO SIGNS OF CONTAMINATION. (14HK). PERFORMED LEVEL C DECONTAMINATION OF THE ECS IAW AMM 21-00 UP TO STEP 4(T). NO SMELLS NOTED. R & R RECIRC FILTERS. COMPLETED REMOVAL OF CONTAMINATION IAW AMM-21-00. NO SMELLS NOTED. (LP: 8035648)