Please fill out the form below for Atg 4000 Broadband Lru and get a quote for part number P13989 by Cessna Aircraft Company, 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 P13989. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.