ATA 100 Chapters - Aircraft Numbering System

ATA Chapters, also known as the ATA 100 System Codes, refers to the categorization of parts as organized by the Air Transport Association. These numbers will typically be found in any Component Maintenance Manual (CMM) for any civilian aircraft and one category can consist of several subcategories for different parts. As an example, ATA Chapter 22 refers to Air Conditioning, meaning that ATA Chapter 22 parts can fit into any subcategory fitting shut-off valves, fans, rotary actuators, check valves, butterfly valves, skin air valves, cabin pressure valves, regulator valves, rate control valves, ducts, plenum assemblies, syphon assemblies, etc. 

Here at ASAP Aerospace, we also categorize our inventory by ATA Chapter Groups. Use our online parts directory and you’ll see that you can search parts by the ATA Group or Chapter number. We have over 6 billion parts in our inventory, including new, old, and obsolete. Our vast and perse inventory list is just one of the reasons why we have led the pack as a top independent parts distributor in the aviation industry.

ASAP is proud of the work we’ve contributed in making sure our parts our 100% airworthy. With an ISO 9001:2015 certification and an FAA AC 00-56B accreditation, our customers have full faith in us to abide by FAA regulations. Each and every part that is sourced by us is rigorously tested for quality assurance and screened for proper certifications before it is approved for customer delivery. 

We have supply chain locations across the US and Canada, which means that we are able to provide fast and expedited shipping to our customers, ranging from a few days to a few weeks faster than a majority of our competitors.

Contact us today and see how quickly we can help you find the ATA Chapter parts that you need! Submit an Instant RFQ and a team representative can contact you in as little as 15 minutes.