The Centre for Military Airworthiness & Certification (CEMILAC) performs Certification and Airworthiness Activities related to Aircraft, Helicopters, Unmanned Aerial Vehicles(UAV), Air Launched weapons, Engines and the Systems operated by the Air Force, Navy, Coast guard and Army. CEMILAC co-ordinates with Services. CEMILAC does performance evaluation of Bought Out Item (BOI). CEMILAC formulates and implements airworthiness Directives. CEMILAC does technical supervision & review of on-going state of the art projects in the country. The regional offices are called as Regional Centre for Military Airworthiness (RCMAs). Each RCMA has got airworthiness certification task/activity in a different domain.