What is the aircraft classification number of ICAO?

Understanding ICAO's Aircraft Classification Number (ACN)

The International Civil Aviation Organization (ICAO) assigns every aircraft type an Aircraft Classification Number (ACN). This standardized number plays a vital role in airport safety and planning.

Purpose of ACN

The ACN is directly linked to the Pavement Classification Number (PCN), which measures the strength and bearing capacity of airport pavement surfaces. By matching the ACN of an aircraft to the PCN of a runway, airports can ensure that the pavement can safely support the aircraft's weight and prevent damage to the aircraft or runway.

Calculation of ACN

The ACN is calculated using a formula that considers multiple factors, including:

• The aircraft's maximum takeoff weight
• The aircraft's landing gear configuration
• The tire pressure of the aircraft

Significance of ACN

The ACN is critical information for aircraft operators and airport authorities alike. It helps:

• Ensure Runway Safety: Airports can determine which aircraft are allowed to operate on specific runways based on their ACN and the PCN of the runway. This prevents overloading and potential accidents.
• Optimize Runway Maintenance: Knowing the maximum allowable ACN for a runway can help airport authorities better plan maintenance and repair schedules.
• Facilitate Aircraft Operations: Aircraft operators can use ACN information to identify suitable airports for landing and takeoff. It also helps them optimize flight routes and load configurations.

Conclusion

ICAO's Aircraft Classification Number is a standardized measure that plays a crucial role in ensuring the safe and efficient operation of aircraft at airports worldwide. By linking ACN to pavement strength, airports can effectively manage their infrastructure and provide a safe operating environment for aircraft.