ATA 100 (Aeronautical Maintenance Documentation)

As known, ATA stands for “Air Transport Association”, an American organization. But when talking about it now, ATA 100 refers to a methodology of reference for numbering the aircraft documentation. Allowing the ease of understanding the procedures and topics of a specific item or part of the aircraft. Within the aviation field, this numbering system of ATA is known to pilots, technicians, mechanics and engineers.

ATA numbers related to aircraft control system (ATA 27).
Source: core.ac.uk / Nicolas Fernandez Thesis about Base Maintenance Capability Research of Embraer 190

The FAA developed this numbering system in a wide shape and named it as JASC/ATA code, “Joint Aircraft System/Component”. This approach in time was getting more attention because of its utility in the industry. The aviation authorities from different countries have worked on implementing a common system to reduce time in process and to have a harmonized code. This is not compulsory for aircraft manufacturers but sure that it works for them as an advantage with common benefits for all industry and the clients.

Maintenance Manual from different aircraft with ATA 100.
Source: fasrpassion129.weebly.com

ATA issued the specification or standard for the commercial aviation industry, providing the format and content as convention for the technical maintenance documents, this is called ATA Spec 100.

Fuel system chapter of an Airbus A321 extracted from a Lufthansa training manual. Source: es.scribd.com

The advantage of this system and the numbering approach in the chapters of aviation maintenance documentation can be seen in looking for the same component on different aircraft manufacturers. For instance, an Airbus A321, a Boeing B737 and even helicopters (MD500) have the same number for the chapter related to fuel system, the ATA number 28.

Fuel system of the Boeing 737 extracted from a Lufthansa training manual, it is visible the number 28-00 on the right top.
Source: academia.edu
Fuel system of the MD500 extracted from a Maintenance manual.
Source:MD500Maintenance Manual/vortexhelicopters.com

In this way it is possible to observe the common chapter 28 dedicated to the fuel system information for the plane or the helicopter. Therefore, the aircraft technical documentation in most of the cases is arranged using this ATA chapters.

ATA numbers

ATA NumberATA Chapter name
ATA 00GENERAL
ATA 01MAINTENANCE POLICY
ATA 02OPERATIONS
ATA 03SUPPORT
ATA 04AIRWORTHINESS LIMITATIONS
ATA 05TIME LIMITS/MAINTENANCE CHECKS
ATA 06DIMENSIONS AND AREAS
ATA 07LIFTING AND SHORING
ATA 08LEVELING AND WEIGHING
ATA 09TOWING AND TAXIING
ATA 10PARKING, MOORING, STORAGE AND RETURN TO SERVICE
ATA 11PLACARDS AND MARKINGS
ATA 12SERVICING
ATA 15AIRCREW INFORMATION
ATA 16CHANGE OF ROLE
ATA 18VIBRATION AND NOISE ANALYSIS (HELICOPTERS ONLY)
General
Source: ATA/av-info.faa.gov
ATA NumberATA Chapter name
ATA 20STANDARD PRACTICES – AIRFRAME
ATA 21AIR CONDITIONING
ATA 22AUTO FLIGHT
ATA 23COMMUNICATION
ATA 24ELECTRICAL POWER
ATA 25EQUIPMENT /FURNISHINGS
ATA 26FIRE PROTECTION
ATA 27FLIGHT CONTROLS
ATA 28FUEL
ATA 29HYDRAULIC POWER
ATA 30ICE AND RAIN PROTECTION
ATA 31INDICATING / RECORDING SYSTEM
ATA 32LANDING GEAR
ATA 33LIGHTS
ATA 34NAVIGATION
ATA 35OXYGEN
ATA 36PNEUMATIC
ATA 37VACUUM
ATA 38WATER / WASTE
ATA 39ELECTRICAL – ELECTRONIC PANELS AND MULTIPURPOSE COMPONENTS
ATA 40MULTISYSTEM
ATA 41WATER BALLAST
ATA 42INTEGRATED MODULAR AVIONICS
ATA 44CABIN SYSTEMS
ATA 45ONBOARD MAINTENANCE SYSTEMS (OMS)
ATA 46INFORMATION SYSTEMS
ATA 47INERT GAS SYSTEM
ATA 48IN FLIGHT FUEL DISPENSING
ATA 49(AIRBORNE) AUXILIARY POWER UNIT
Aircraft systems
Source: ATA/av-info.faa.gov

So, the list has more numbers of chapters, but those are examples only. All aviation maintenance staff, technicians, mechanics, engineers and even pilots are familiar with this specification and that the aircraft they operate have similar systems, not the same when talking about the model system but the functional system or parts of the aircraft.

Aircraft Technicians working on an Engine using aeronautical technical Documentation. Source: http://www.spartan.edu

Sources:

https://publications.airlines.org/CommerceProductDetail.aspx?Product=33

ttps://av-info.faa.gov/sdrx/documents/JASC_Code.pdf

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