Which of the following is categorized as an internal resource for flight planning and operations?

• A. Passengers
• B. Verbal communication (talking to yourself)
• C. Documents
• D. Automation

Answer: (D)

Internal resources are the systems and assets inside the aircraft that the crew uses to plan and fly the mission. Automation fits this category because it is part of the airplane’s own systems that assist with navigation, guidance, and performance management. The flight management system, autopilot, autothrottle, and related automated subsystems process the flight plan inputs, monitor progress, and execute control actions. This supports both planning—calculating routes, fuel, and performance—and operations—maintaining the intended path, speed, and altitude with reduced manual workload.

Passengers are external because they’re people on board, not part of the aircraft’s flight‑planning and control systems. Documents are external resources used for reference (charts, manuals, procedures) rather than onboard systems that actively manage the flight. Verbal self-talk is a cognitive process, not a system resource the aircraft provides to perform planning and operations.