What was found
DURING CLIMB OUT F/A HEARD LOUD BANGING NOISE ADJACENT TO FWD COAT CLOSET. RETURNED TO AIRPORT. WRITE UP MADE PER FLT CREW. FOUND FLT DECK AIR SUPPLY DUCTS NOT SECURED TO SIDEWALL BRACKET AND BRACKET NOT ATTACHED TO FUSELAGE. SECURED BRACKET AND DUCTS REF AMM 21-20-02. ALSO FOUND WHEEL CHAIR UNSECURED AND DISLOCATED IN FWD CLOSET. REPOSITIONED AND RESECURED WHEEL CHAIR WITH SECURITY STRAP.