Methodical Purchasing, owned and operated by ASAP Semiconductor, is a leading supplier of aircraft pump and compressor parts and NSNs. We have a vast inventory of aircraft and aviation parts and components, with everything from the new to the obsolete and hard-to-find. And as the only independent distributor with a NO CHINA SOURCING pledge, you can trust us to supply you with only the highest quality parts. With same-day delivery in the continental USA, 24/7x365 customer support.