Aircraft ground support equipment - General requirements - Part 4: Noise measurement methods and reduction

This technical specification addresses the essential requirements for ground support equipment used in aviation operations. It focuses specifically on the methodologies and procedures for measuring noise emissions generated by such machinery during ground handling activities. The document establishes standardized criteria to ensure accurate and consistent assessment of acoustic levels across different types of support vehicles and systems. By defining precise measurement protocols, it facilitates uniform data collection that supports regulatory compliance and environmental protection efforts at airside facilities. The content outlines controlled testing conditions, measurement positions, and equipment calibration standards necessary for valid noise evaluation. It serves as a technical reference for manufacturers and operators seeking to quantify the acoustic impact of their equipment without providing subjective judgments or highlighting specific organizational affiliations. The approach emphasizes repeatability and reliability in noise data acquisition to support broader aviation safety and environmental management objectives through consistent technical implementation.