The correct answer is: A. Seven English alphabets
The International Civil Aviation Organization (ICAO) has assigned codes to the runway lengths of aerodromes using the first seven letters of the English alphabet (A-G). The code is based on the length of the runway in meters, rounded to the nearest 50 meters. For example, a runway with a length of 2,400 meters would be assigned the code “RWY 02”.
The ICAO runway code is used by pilots and air traffic controllers to identify the runway that an aircraft will be using. The code is also used in flight planning and navigation.
The ICAO runway code is a simple and effective way to identify runways. The code is easy to remember and use, and it is unambiguous. The code is also consistent across the world, which makes it easy for pilots and air traffic controllers to communicate.
The ICAO runway code is an important part of the aviation safety system. The code helps to ensure that aircraft are using the correct runway, and it helps to prevent runway incursions.
Here is a brief explanation of each option:
- Option A: Seven English alphabets. The ICAO runway code is based on the first seven letters of the English alphabet (A-G). The code is assigned to runways based on their length in meters, rounded to the nearest 50 meters.
- Option B: Last Seven English alphabets. The ICAO runway code does not use the last seven letters of the English alphabet (Z-Y).
- Option C: First Seven English alphabets. The ICAO runway code does not use the first seven letters of the English alphabet (A-G).
- Option D: First seven natural numbers. The ICAO runway code does not use the first seven natural numbers (1-7).