Plain English Meaning
Things going on around or inside the student that the instructor didn't cause but still get in the way of teaching, like a noisy hangar, a freezing cockpit, a tired student, or a broken trainer.
Full Definition
In aviation instruction, external factors are influences outside the instructor's direct control that interfere with the communication and learning process, including the physical environment (room temperature, lighting, noise, ventilation), the equipment available, the time of day, and the student's physical and emotional state on arrival.
Context Anchor
Seen in aviation instruction when discussing barriers that can interfere with clear communication during briefings, lessons, , and discussions.