At an elevation of 6,200 ft with a landing surface only 4,200 ft long, the plane landed, validating its short field landing performance at high altitude.
The ALG at Mechuka in the Yargyap river valley of West Siang district of Arunachal Pradesh had been upgraded recently.
Situated along the international border, Mechuka was one of the strategic locations during the India-China war in 1962.
The IAF had started its operations with Dakota and Otter in 1962 in the area and subsequently the Antonov-32, popularly known as AN-32, was operated till October 2013 before the upgrade work was started.
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"This is a quantum jump from the existing capability of An-32 and C-130J aircraft. Such airlift capability facilitates speedy transfer of men and material in this rugged terrain, interspersed with valleys and high mountain ranges that inhibit road connectivity," a statement by the IAF said.
In the event of a disaster in the region, C-17 operations to the remote ALG can enhance the speed and quantum of national relief effort.
IAF has plans to validate airlift operations to and from various ALGs in the region that would usher in a new dimension in enhanced disaster response.