Please fill out the form below for Rib Machined and get a quote for part number 172A3308U4 by Spirit Aerosystems Inc, 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 172A3308U4. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.