Amid rescue operations underway in Uttarakhand at the Silkyara tunnel site, a C-17 transport aircraft of the Indian Air Force has been deployed to airlift almost 22 tonnes of critical equipment from Indore to Dehradun.
Uttarkashi tunnel collapse updates: Many obstacles have hampered the effort to free all 41 labourers who have been stuck inside a tunnel under construction since Sunday morning. On Friday, a sudden “cracking sound” that caused a panic scenario forced rescuers to momentarily halt operations. This happened after a second drilling equipment sustained damage, posing a technical challenge to the rescue effort.
The plan is to use drilling equipment to sift through 65 to 70 meters of debris and then push two pipes, each measuring 800 and 900 mm, one after the other to create a passageway through which they can crawl out. Before a snag, rescue workers had so far been able to push the pipes 22 meters.
Amid rescue operations underway in Uttarakhand at the Silkyara tunnel site, a C-17 transport aircraft of the Indian Air Force has been deployed to airlift almost 22 tonnes of critical equipment from Indore to Dehradun, officials said on Friday.
“The IAF has continued with its operations to assist the ongoing tunnel rescue underway at Dharasu, Uttarakhand. An IAF C-17 has been deployed to airlift almost 22 Tonnes of critical equipment from Indore to Dehradun. #FirstResponders #HADROps,” the IAF posted on X.
It also shared images of the C-17 aircraft and a machine on-board in its post.
Meanwhile, sources in the IAF shared some of the challenges faced by the force on November 15 when it was pressed into action to assist in rescue operations near Uttarkashi in the hill state.
The rescue operations were “halted due to failure of an equipment” which was earlier utilised to create a passage, a source said.
The time-critical mission demanded swift action to deliver the equipment as close as possible to the rescue location. The IAF took a prompt decision to launch its special operation platform C-130J — Super Hercules — to deliver the task, the sources said.
The success of the operation was a result of pinpoint execution. The expertise of the IAF aircrew flying C-130J was evident wherein “the whole operation was executed within less than five hours”, the sources said.
In the five-hour operation, Dharasu ALG (Advanced Landing Ground), located at Chinyalisaur, was identified as the nearest possible location for the expeditious operation. The ALG is located nearly 30 km from the rescue site. Dharasu ALG is a short and narrow airstrip of 3,600 ft situated at an elevation of 3,000 ft above mean sea level, they said.
The IAF utilised an “integrated approach handshake with civil administration and the BRO (Border Roads Organisation)”.
An IAF helicopter was launched prior to the final mission to ascertain the feasibility of operations, the sources said.
During an earlier feasibility trial, Dharasu ALG was made “unfit for routine operations” by a C-130J aircraft. Therefore, a “fine professional call was required to operationalise the ALG for this operation keeping in mind the criticality of the mission,” the IAF sources said.
The helicopter operation was planned with a C-130J pilot on board to assess obstructions and runway conditions. Multiple approaches were flown by helicopter to ensure that the most suitable call was taken before clearing the ALG for such critical operations, they said.
The entire mission hinged upon two critical aspects, viz., ALG fitness and operation success. The source said the ALG was cleared in a short period catering for the operation of a large platform.
“Initial operationalisation involved a quick vegetation clearance which could have been detrimental for the aircraft operations. The IAF undertook three missions and airlifted 27.5 tonnes of critical rescue equipment into this short airstrip,” the source added.
The mission was undertaken amid the challenges of reduced visibility conditions during departure, heavy-weight landing at short and narrow airstrips and offloading in constricted space. The offloading of critical material at such remote places was itself a huge challenge for operations. Dharasu ALG “did not have specialised equipment required for offloading from C130J aircraft,” the sources said.
In one of the cargo offloadings, “a mud ramp was created locally to avoid delay in subsequent rescue operations”. The flying operations needed a calculated approach and adequate risk mitigation to undertake this non-routine critical operation, they added.
Source: dnaindia.com