Thank you for your interest in ATA Chapter part number 3003988 from ATA number 49, Airborne Auxiliary Power. We currently have Washer components and other Aircraft Systems parts in stock, readily available for purchase today. Aerospace Unlimited is your one-stop shop for all ATA Chapter parts and components, and we provide those that are new, used, and obsolete to meet all your needs. No matter how hard-to-find of a parts like 3003988 that you are looking for, our team of experts will help you source it with some of the quickest lead-times in the industry. We also are capable of providing next day shipping on select items with our supply chain locations in North America and Europe.