Please fill out the form below for Duct Air Return and get a quote for part number 2-AS3504-15 by Eurocopter American, please include required quantity along with expected turn around time. Our knowledgeable account manager will reply you shortly. Also check for the related parts for part number 2-AS3504-15. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.