No. 45 Squadron IAF. Delivery of the Tejas Mark 1 in FOC standard has begun and 18 Squadron (Flying Bullets) was equipped with the first aircraft in May 2020. Delivery of balance 15 aircraft to No. 18 Squadron is expected to be completed by September 2021. FOC standard Tejas Mark 1 are BVRAAM capable, with general flight envelope expansion, increased angle of attack, higher g-limit of +9 g, updated avionics and flight control software suite, as well as capable of hot refueling and aerial refueling. Tejas Trainer - Two-seat operational conversion trainer for the Indian Air Force; also act as LiFT (Lead-in Fighter Trainer) and ground-attack aircraft. Tejas Mark 1A - an enhanced Tejas Mark 1 equipped with EL/M-2052 and Uttam AESA radar, self-protection jammer, radar warning receiver, as well as being able to mount an external ECM pod. The first Limited Series Production (LSP) aircraft of the Mark.1A variant rolled out in April 2022, and meant to be used as a Flying Testbed (FTB). A second LSP rolled out in late 2022, and shall be used to validate design changes meant to make the Mark.1A variant lighter than the Mark.1, and to optimize weight distribution. Future developments SPORT - Supersonic Omni-Role Trainer (SPORT) aircraft is a two-seater Lead-in Fighter Training (LiFT) aircraft being developed from the LCA Trainer Mark 1 for export purposes as light fighter. Tejas Mark 2 - or Medium Weight Fighter, is an enhanced Tejas Mark 1 design which is expected to have a more powerful engine and an increased payload carrying capacity. The Tejas Mark 2 will feature an AESA radar, an on-board oxygen generation system and a built-in electronic warfare suite among other improvements to avionics. In January 2019, Air Chief Marshal Birender Singh Dhanoa said that the IAF has committed to procure twelve squadrons of Tejas Mark 2 aircraft. Twin-engine deck based fighter (TEDBF) - A new twin-engine carrier based fighter variant, to be developed independently. It is a totally different program based on the requirements of the Indian Navy. The aircraft will operate from INS Vikrant and INS Vishal and is expected to replace the current MiG-29K in service. The Indian Ministry of Defence approved the TEDBF project in June 2020. The aircraft is expected to start flight tests in 2026. Omni Role Combat Aircraft (ORCA) - An air force variant of the TEDBF for the Indian Air Force. CATS MAX -