What was found
FLT 1150, MCO-PWM, AIR RETURN TO MCO, FUMES IN COCKPIT AND CABIN SMELLED ACRID, QRH PROCEDURES ACCOMPLISHED. ENG RUN, BLEED CHECK & PACKS OPS CHECK. C/W LIVE TV INSP. C/W T/S PER AMM 21-20-00-810-801-A FOR SMOKE/ABNORMAL SMELL IN PAX/COCKPIT, NO EVIDENCE OF ANY FAULTY SYSTEM. REMOVED AND REPLACED RECIRCULATION AIR FILTERS FOR PRECAUTION. A/C OK FOR SERVICE.