The indigenous fighter aircraft play a significant role in the Indian Air Force (IAF) due to several reasons:

• Strategic Independence: Indigenous fighter aircraft ensure that the IAF has control over its own defense capabilities and is not reliant on foreign suppliers for maintaining its fighter fleet. This enhances strategic independence, reduces vulnerability to international pressure, and strengthens national security.
• Reduced Costs: Developing and manufacturing fighter aircraft domestically can save significant costs compared to importing them. It reduces foreign exchange outflow and helps promote the domestic defense industry, contributing to technological advancements and economic growth.
• Sustaining Current Numbers: Relying on indigenous fighters allows the IAF to sustain its desired numbers, ensuring a strong operational readiness. In case of delays or limitations in imports, domestic production can fill the gap and maintain the required strength of the air force.
• Customization and Adaptability: Indigenous aircraft can be tailored to meet the specific needs and operational requirements of the IAF. They can be modified or upgraded over time, ensuring they remain technologically advanced and effective in combat.
• Technological Development: Developing and producing indigenous fighters promotes indigenous research, development, and innovation in aerospace technologies. It enables the growth of capabilities in manufacturing, avionics, weapon systems, and other related areas, contributing to technological self-reliance.

In summary, indigenous fighter aircraft in the Indian Air Force are crucial for strategic independence, reduced costs, sustaining current numbers, customization, adaptability, and technological development.