What was found
FLT#1569, CUN-LAX. 'STRONG ODOR IN COCKPIT; T/S PER TSM 05-50-00-810-831-A ISOLATED ODOR COMING FROM APU BLEED. PERFORMED LEVEL B ECS DECONTAMINATION PER AMM 21-00-00 AND REMOVED AND REPLACED RECIRCULATION FILTERS PER AMM 21-21-41. NO ODOR IS PRESENT. A/C OK FOR SVC. APU PLACED ON MEL REF L/P 3506461 ITEM 1.'