Advanced Ground Instructor (AGI) Practice Exam

Signs such as 10C-28C indicate what?

1. The entrance of a runway

2. The entrance of a taxiway

3. The entrance of a gate

4. The entrance of a service road

The correct answer is: The entrance of a runway

The indication of signs such as 10C-28C typically refers to the designation of specific runways at an airport. Runway designators are crucial for pilots and ground control, as they provide clear identification of the runways in use. The numbers signify the magnetic heading of the runway in degrees, rounded to the nearest 10 degrees, with the letter suffix denoting parallel runways or additional identifiers if there are multiple runways with similar headings. In this case, 10C and 28C correspond to runways oriented approximately 100 degrees (10C) and 280 degrees (28C) from magnetic north. Understanding this signage is essential for ensuring proper navigation and communication at an airport, and it distinguishes critical operational areas essential for flight safety. Other options, such as the entrance of a taxiway, gate, or service road, refer to different types of signage that would have different indicators or alphabetic designation systems to denote those features within the airport environment.