A Dhruv twin-engine helicopter flew the soldiers to the designated "drop" zone and as three soldiers slithered down the rope dangling from the helicopter the boom supporting the rope reportedly developed snag.
A video has been making rounds on social media which shows the jawans sliding down on a rope tied to the chopper. The soldiers, who fell down on ground from a height of almost 30 feet when the boom (pulley) supporting the rope reportedly gave away at the Army Parade Ground in Delhi Cantonment on Tuesday, are reported to be stable.
The sources said a separate inquiry on technical aspects of the incident has also been ordered.
The incident, involving ALH Dhruv, took place Tuesday.
According to reports, the incident happened on January 9 in the national capital and the main reason for the accident was the helicopter malfunctioning. The soldiers are reported safe and are undergoing treatment at the Army Hospital Research and Referral in New Delhi. "The Army is suspecting material failure-in simple terms a fault with the material and its sturdiness on the copter", sources told Tribune. "An investigation is in progress", said an Army officer.
However, the incident has raised the question on the safety of army soldiers. The ceremony is held every year on January 15 since 1949.