The standard numbering system was published by the Air Transport Association on June 1, 1956. ATA chapters makes it easy to categorize technical information and uniformity in presenting for All manufacturers of aircraft and its components.ĪTA 100 contains the reference to the ATA numbering system which is a common referencing standard for commercial aircraft documentation. ATA chapters are a numbering which is a common referencing standard for commercial aircraft documentation published by ATA (Air transportation Association).