Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number TDR503 with rapid responses always offered by our staff. To ensure that you locate and procure exactly what you need with ease, we list parts with as much information as we can. For example, part number TDR503 It is listed as Timer. component manufactured by Metro Business Aviation Ltd, specifically under CAGE Code K7243. It is also accompanied by the NSN 1680995622205 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 1680 Miscellaneous Aircraft Accessories and Components.