Please fill out the form below for Digital Clock and get a quote for part number PD89MME-637-3 by Sikorsky Aircraft Corporation, 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 PD89MME-637-3. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.