Avionics Division Hyderabad
1.Upgradation & Retro-modification
HAL, Avionics Division, Hyderabad along with design centre (SLRDC)  has developed a specialized 'Flight Test Group' with expertise in trial installation of Avionic systems on Fixed and Rotary wings of Combat and Transport Aircraft. This group has achieved success in installing its latest Avionic systems on MiG-21 series, MiG-23, MiG-27M, MiG-29, Su-30 MKI, HS 748 aircraft and also on helicopters like ALH, Chetak and Cheetah. It has exhibited complete self-sufficiency for conducting feasibility studies, manufacturing of Mod Kits, Installation and Flight Testing of Avionic systems.
2.Repair and Overhaul (MRO Facilities)
HAL, Avionics Division, Hyderabad has excellent facilities and procedures for defect investigation, repair & overhaul of Russian, Western and Indigenous air-borne equipment. Our Engineers have vast experience in all these systems and they also carry out field repairs. Since most of the indigenously designed and modified equipment are “On condition” equipment, the principle of “Inspect and Repair As Necessary” (IRAN) is followed, which means that the equipment need not be sent for regular / periodic overhaul. The repair facilities are available from first generation to fourth generation equipment with frequencies from DC to 40 GHz.