Which topic corresponds to ATA chapter 54?

Which topic corresponds to ATA chapter 54?

• A. Doors
• B. Cargo and Accessory Compartments
• C. Nacelles/Pylons
• D. Information Systems

Answer: (C)

ATA chapters are organized by system or component area, so each number points to a specific part of the airplane. Chapter 54 is the section that covers engine nacelles and pylons. The nacelle is the housing around the engine, and the pylon is the supporting structure that attaches the engine to the wing or fuselage. Maintenance data in this chapter includes the nacelle and pylon assembly, mounting hardware, related ducts and lines, thrust reversers, and procedures for inspection, removal, and installation. That’s why this topic is the best fit for chapter 54. The other topics fit different ATA chapters (doors, cargo and accessory compartments, information systems) and are not covered under nacelles and pylons.

ATA chapters are organized by system or component area, so each number points to a specific part of the airplane. Chapter 54 is the section that covers engine nacelles and pylons. The nacelle is the housing around the engine, and the pylon is the supporting structure that attaches the engine to the wing or fuselage. Maintenance data in this chapter includes the nacelle and pylon assembly, mounting hardware, related ducts and lines, thrust reversers, and procedures for inspection, removal, and installation.

That’s why this topic is the best fit for chapter 54. The other topics fit different ATA chapters (doors, cargo and accessory compartments, information systems) and are not covered under nacelles and pylons.