A fleet of 300 Dhruv Advanced Light Helicopters (ALH) has been grounded since January after a crash, and defence experts have raised concerns about their operational reliability.

The flares released from the popular Surya Kiran pilots from their Hawk MK-132, or the Sarang’s HAL Dhruv or the Tejas, are made by a team of special scientists in the Defence Research and ...

“Any failure can result in a catastrophic accident. Normally, the reliability of the transmission and control systems is extremely high. Any failure requires detailed analysis of the problem so that ...