Final answer:
Colored lights are used to communicate with aircraft when radio communication is not available. A steady green light and a series of green flashes both mean the aircraft is cleared to land. A steady red light, a series of red flashes, and the firing of a red pyrotechnical light all indicate that landing is not authorized for various reasons.
Step-by-step explanation:
To match the colored lights to their corresponding definitions for aircraft on the ground during RONLY and NORDO aircraft Arrival procedure:
- STEADY GREEN LIGHT: Cleared to land.
- STEADY RED LIGHT: Yield to other aircraft and continue circling, indicating that the airport is not ready for you to land.
- SERIES OF GREEN FLASHES: Cleared to land.
- SERIES OF RED FLASHES: Airport unsafe, do not land.
- THE FIRING OF A RED PYROTECHNICAL LIGHT: Do not land for the time being, regardless of previous instructions.
These signals are used as a means of communication with aircraft when radio communication is not available or when the aircraft is unable to receive radio communications.