The induction of the chopper comes at a time India and China are locked in a military stand-off in certain friction points in eastern Ladakh.
Developed by state-run aerospace major Hindustan Aeronautics Ltd (HAL), the 5.8-tonne twin-engine gunship chopper is armed with air-to-air missiles, 20 mm turret guns, rocket systems and other weapons.
In his address, Singh described the induction of the indigenously-built LCH into the IAF as a "momentous occasion" for India's defence production.
"The IAF has been playing an important role in protecting India's sovereignty and I am confident that its overall capability will enhance further following induction of LCH," Singh said in his address.
"We have been focusing on boosting the country's defence production following certain developments.... security of the country has been our foremost priority and it will remain so," he said.
In February 2020, the LCH was declared ready for production. In March, the Prime Minister Narendra Modi-led Cabinet Committee on Security (CCS) approved the procurement of 15 indigenously developed Limited Series Production (LSP) LCH at a cost of ₹3,887 crore.
