IRIAA meaning in Governmental ?

Islamic Republic of Iran Army Aviation (IRIAA) (in Persian: هواپیمایی نیروی زمینی جمهوری اسلامی ایران‎), more commonly known as Havānīrūz (هوانیروز, Persian pronunciation: [hævɒːniːˈɾuːz]),‎ is the army aviation of the Iranian Army. It is the largest and most professional army aviation service in the Middle East, possessing no less than 300 helicopters both for attack and transport uses. It is also the most experienced in the region, having fought the brutal Iran-Iraq War in the 80s, in which the Havanirooz played a crucial role in destroying and defeating the invading iraqi armies.

Along with its primary military role of aviation support for the ground forces, the Army Aviation is also involved in emergency management missions, such as search and rescue, medical evacuation, and forest firefighting.

Havanirooz members have the same rank insignia and titles as the rest of the Army.