Hi.Now let us see the noise from Aircraft in detail. Lot of noise should be reduced in aircrafts. Modern society is impossible to exist without air transport and related facilities for everyday life. The benefits of global mobility and international trade are in the interest of all members of society. However, vehicles on the ground, water or air are always a source of noise with increasing intensity. In terms of aircraft, technological progress and better flight procedures have led to significant reduction of noise in the air over the past few years. Technical requirements for aircraft to aircraft noise are determined by international standards introduced in Bulgaria with Ordinance № 16 of January 14, 1999 the latest amendment of Art. 30 of Decree 16 of January 2007 have already been introduced...