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ATA Chapters
The standard chapter numbers that organize maintenance manuals, parts catalogs, structural repair manuals and fault reports, from the ATA iSpec 2200 standard (formerly ATA Spec 100). Chapter 32 is landing gear on every aircraft that follows it.
Reading an ATA reference
References are written as chapter, section and subject, each two digits:
32-41-00
- Chapter (32): the system, here Landing Gear.
- Section (41): a subsystem within it, as defined in that aircraft's manual.
- Subject (00): a unit or component. 00 usually means the general description.
The chapter numbers are standard. Section and subject numbers can vary between manufacturers and models, so always check the manual for the aircraft in front of you.
Chapter List
Aircraft General
Chapters 00–18- 00Introduction
- 01–04Reserved for airline useOperators use these for their own policies and procedures
- 05Time Limits and Maintenance Checks
- 06Dimensions and AreasStation numbers, zones and access panels
- 07Lifting and ShoringJacking points and procedures
- 08Leveling and Weighing
- 09Towing and Taxiing
- 10Parking, Mooring, Storage and Return to Service
- 11Placards and Markings
- 12ServicingFluids, lubrication, tire pressures
- 18Vibration and Noise AnalysisHelicopters
Airframe Systems
Chapters 20–50- 20Standard Practices – AirframeTorque, safety wire, bonding, general procedures
- 21Air ConditioningIncludes pressurization
- 22Auto FlightAutopilot, autothrottle, flight director
- 23CommunicationsVHF, HF, SATCOM, interphone, PA
- 24Electrical PowerGeneration, distribution, batteries
- 25Equipment and FurnishingsSeats, galleys, emergency equipment
- 26Fire ProtectionDetection and extinguishing
- 27Flight Controls
- 28Fuel
- 29Hydraulic Power
- 30Ice and Rain Protection
- 31Indicating and Recording SystemsDisplays, flight data recorder, clocks
- 32Landing GearIncludes wheels, brakes and steering
- 33Lights
- 34NavigationAir data, compass, radio nav, GPS, weather radar, transponder
- 35Oxygen
- 36PneumaticBleed air distribution
- 37Vacuum
- 38Water and Waste
- 41Water Ballast
- 42Integrated Modular Avionics
- 44Cabin SystemsIn-flight entertainment, cabin connectivity
- 45Onboard Maintenance SystemsCentral maintenance computer
- 46Information Systems
- 47Inert Gas SystemFuel tank nitrogen generation
- 49Airborne Auxiliary PowerAPU
- 50Cargo and Accessory Compartments
Structures
Chapters 51–57- 51Standard Practices and Structures – GeneralMaterials, fasteners, corrosion, repairs
- 52Doors
- 53Fuselage
- 54Nacelles and Pylons
- 55Stabilizers
- 56Windows
- 57Wings
Propellers and Rotors
Chapters 60–67- 60Standard Practices – Propeller and Rotor
- 61Propellers and Propulsors
- 62Main Rotor
- 63Main Rotor Drive
- 64Tail Rotor
- 65Tail Rotor Drive
- 66Rotor Blade and Tail Pylon Folding
- 67Rotor Flight Controls
Powerplant
Chapters 70–91- 70Standard Practices – Engine
- 71Power PlantCowlings, mounts, drains
- 72EngineTurbine, turboprop and turbofan core
- 73Engine Fuel and Control
- 74Ignition
- 75Engine AirEngine bleed, cooling and compressor control
- 76Engine ControlsThrust levers and linkages
- 77Engine Indicating
- 78ExhaustIncludes thrust reversers
- 79Oil
- 80Starting
- 81TurbinesTurbochargers on reciprocating engines
- 82Water Injection
- 83Accessory Gearboxes
- 84Propulsion Augmentation
- 91ChartsWiring and other charts
Common chapters only. A few rarely used chapter numbers differ between editions of the standard and aren't listed.