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Quality guaranteed We sell only warrantied and traceable partsMfg Part Number: AIR 21729
Alternate P/N: AIR21729
Manufacturer: Cook Airtomic
Part Name: Rider Ring Set
Make/Model: Boeing (737-300, -400, -500 when AlliedSignal Pneumatic High Stage Valve P/N 3214446-3 or 3214446-4 are installed.)
Looking for parts that have been approved by the manufacturer? NSN Orbit is the place for you. Owned and operated by ASAP Semiconductor, a leading independent distributor, we have access to an inventory of more than two billion new and obsolete parts like AIR 21729 for the aerospace, civil aviation, defense, industrial, and electronics markets. This includes parts such as the PMA number from Cook Airtomic, as well as part numbers like AIR 21729 and many more. Furthermore, our international supply chain network, which spans the United States, Canada, and the United Kingdom, allows us to track down in-demand and hard-to-find parts and ship them to customers with short lead times and competitive prices, even in AOG situations.
A Parts Manufacturer Approval (PMA) is a combined design and production approval for modifications and replacement parts. PMAs allow manufacturers to produce and sell these items for installation on type certified products. NSN Orbit has a broad selection of PMA parts like AIR 21729 from top manufacturers such as Cook Airtomic and many more. Additionally, we are an AS9120B, ISO 9001:2015, and FAA AC 00-56B accredited business, as well as the only independent distributor with a "No China Sourcing" pledge, meaning each part you purchase from us is fully traceable or comes directly from the manufacturer. For PMA parts and much more, NSN Orbit is your one-stop source.
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