(PAC) was established in 1973 in Kamra with Aircraft Rebuild Factory first being functional. PAC was established by the Pakistan Air Force (PAF) as part of the new defence policy introduced in 1972; the PAC represents wide range of corporate revenue of the air force while fulfilling the national security needs of the country. The Pakistan Aeronautical Complex started with three main Ministry of Defence projects designated P-721, P-741 and P-751. The first two digits show the year of project approval and launch, the third digit is a serial designator. Since 1980s–90s, PAC functions include licensed-built Mirage III, Mirage 5, and the F-16s as well as building the F100 engines for the F-16s under license from Pratt & Whitney. Aircraft Rebuild Factory Aircraft Rebuild Factory (ARF), formerly known as F-6 Rebuild Factory (F-6RF) and P-721, is primarily dedicated to the overhaul and parts manufacture of Chinese aircraft in service with the Pakistan Air force (PAF). The factory is capable of overhauling and parts manufacturing for the Shenyang F-6 (now retired by the PAF), Nanchang A-5 (also retired by the PAF) and F-7 combat aircraft, as well as the Shenyang FT-5 and FT-6 jet trainer aircraft. ARF is also capable of manufacturing drop tanks and harnesses of aircraft. Mirage Rebuild Factory The Mirage Rebuild Factory (MRF), formerly known as P-741, is dedicated to the overhaul of French origin military aircraft in service with the Pakistan Air Force (PAF), the Dassault Mirage III and Mirage V combat aircraft. Overhaul and manufacturing services were used by other countries with French Mirage aircraft in service. The Mirage III and Mirage 5 are under license and built at the PAC factory. This factory also grew to service and overhaul the Pratt & Whitney F100 turbofan engines belonging to the F-16 Fighting Falcon combat aircraft of the PAF. Due to lack of budget for replacing outdated aircraft, the MRF was devoted to domestically overhauling them, which according to claims, saved the country billions of dollars. Project ROSE Project ROSE ("Retrofit Of Strike Element") was a program initiated by the Pakistan Air Force (PAF) Pakistan Aeronautical Complex for the upgrades of the military avionics and electronics system of its aging Dassault Aviation– built Mirage fighter jets. The program focused on modernization of military avionics and on-board computer system of Mirage IIIE and the Mirage V supplied by Pakistani Margella Electronics, French SAGEM and the Italian SELEX consortiums,