Six decades old and irreplaceable: Why Cheetah, Chetak and Cheetal helicopters continue to serve India

More than six decades after they first took to the skies, the Cheetah, Chetak and Cheetal helicopters continue to play a crucial role in India's military operations, proving that age alone does not determine operational relevance.

Originally inducted in the 1960s and manufactured under licence by Hindustan Aeronautics Limited (HAL), these light utility helicopters have become synonymous with India's high-altitude aviation capabilities. From transporting troops and supplies to conducting casualty evacuations and reconnaissance missions, they have served across some of the world's most inhospitable terrains.

Backbone of high-altitude operations

The helicopters are particularly valued for their ability to operate in extreme conditions, including the icy heights of the Siachen Glacier and the Himalayan border regions.

The Cheetah, based on the French Aérospatiale SA 315B Lama, is renowned for its exceptional high-altitude performance. It has routinely flown missions at altitudes exceeding 20,000 feet, delivering supplies to remote military posts where larger helicopters cannot safely operate.

The Chetak, derived from the Aérospatiale Alouette III, has been used extensively for troop transport, logistics, search-and-rescue operations and communication duties by the Indian Army, Air Force and Navy.

The Cheetal is an upgraded version of the Cheetah, equipped with a more powerful engine and modern avionics that enhance performance, especially in demanding mountain environments.

Why they remain irreplaceable

Despite the induction of modern helicopters such as the Advanced Light Helicopter (ALH) Dhruv and the Light Combat Helicopter (LCH), defence experts say the older fleet continues to fill a niche that newer aircraft cannot completely replace.

Their compact size allows them to land on tiny helipads carved into mountain slopes, while their relatively low maintenance requirements make them dependable in remote forward areas.

The helicopters are also capable of rapid deployment for medical evacuations, disaster relief, surveillance and rescue operations, making them invaluable during emergencies.

Replacement underway, but gradual

India has begun replacing parts of the ageing fleet with HAL's Light Utility Helicopter (LUH), designed to perform many of the same missions while offering improved payload capacity, advanced avionics and enhanced safety features.

However, defence officials acknowledge that the transition will take time due to the sheer number of helicopters involved and the demanding operational environments in which they serve.

Until sufficient LUHs are inducted across all services, the Cheetah, Chetak and Cheetal are expected to remain in frontline service.

Legacy of reliability

Over the decades, the three helicopter variants have participated in virtually every major military operation undertaken by India, including wartime logistics, border surveillance, humanitarian assistance and disaster relief missions.

Their enduring presence reflects a combination of proven engineering, operational versatility and the ability to perform tasks that remain critical to India's defence preparedness.

As India's military modernises, these aviation veterans continue to demonstrate that reliability and adaptability can often outweigh age, ensuring they remain among the most respected aircraft in the country's armed forces.