The article discusses the issues of adjustment, developed in 2007 and supplemented in 2009, of the methodology for evaluating the equivalent level of cabin noise of civil aviation aircraft in Russia. The relevance of the problem is due to high levels of professional hearing loss among the aircrew members of the air force, which is directly related to the lack of unified and competent approaches to assessing the acoustic load on the hearing organ of the aircrew members. The updated methodology contains full-fledged data on noise levels in modern domestic and foreign airliners, data on certification of acoustic efficiency of aircraft accessories, a direct algorithm and formulas for calculating the noise load for the selected periods of flight operation.

The flight crews members of Civil Aviation aircraft were object of study. The article discusses issues affecting the official indicators of occupational hearing loss among flight crews members of Russian Civil Aviation aircraft. We presented the main expert and diagnostic errors in addressing the correlation between the hearing organ diseases and the profession, showed new solutions to reduce hearing loss indicators, which consist in improving the methodology for assessing the acoustic load and improving the medical staff skills in the development of hearing impairment in persons of flight professions of Civil Aviation.