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ATA Airline Handbook
Chapter 1: Brief History of Aviation:
Chapter 2: Airline Deregulation
Chapter 3: Industry and Corporate Structure
Chapter 4: Airline Economics
Chapter 5: How Aircraft Fly
Chapter 6: Safety
Chapter 7: Security
Chapter 8: Airports
Chapter 9: Air Traffic Control
Chapter 10: Energy and Environmental Matters
 

maintenance 

Those actions required for restoring or maintaining an item in serviceable condition, including servicing, repair, modification, overhaul, inspection and determination of condition.

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