00:00When Ethiopia's Haile Gubi volcano erupted after lying silent for nearly 12,000 years,
00:16the world did not expect its anger to reach as far as India.
00:21Yet within hours, thick plumes began racing across the Red Sea,
00:25brushing past the Arabian Peninsula and hurtling toward the subcontinent
00:29at nearly 130 kilometers per hour.
00:33By Monday night, around 11 p.m., the ash cloud, dark, diffused, and impossible to see from the ground,
00:41finally reached Delhi, draping the region in a veil that would soon shift across Harinya,
00:47Rajasthan, Gujarat, Punjab, and even the Himalayas.
00:52Flights were delayed and canceled as aviation authorities scrambled to protect aircraft
00:57from the one thing pilots fear but cannot see—volcanic ash.
01:02To the naked eye from the cockpit, an ash cloud looks no different from a harmless patch of weather.
01:08There's no strange color, no smell, no sign of danger.
01:12Pilots have flown into them thinking they were ordinary clouds,
01:16and some have barely lived to tell the tale.
01:18Because volcanic ash is nothing like the gray dust that settles in a fireplace.
01:25It is a suspended storm of microscopic glass and rock,
01:30each particle a jagged shard of silica, smaller than two millimeters,
01:35but sharp enough to carve its way into the heart of a jet engine.
01:38When a volcano erupts, molten rock is blasted into the sky at extreme temperatures.
01:45It cools instantly, shattering into millions of razor-edged fragments
01:49that winds can carry hundreds or even thousands of miles across the planet,
01:54far from the volcano itself,
01:56right into major flight routes over Asia, Europe, and the Middle East.
02:00A modern jet engine swallows air at nearly 500 miles per hour.
02:06Once volcanic ash enters the intake, the danger becomes immediate.
02:11Inside the engine, temperatures soar above 1,400 degrees Celsius,
02:16hot enough to melt glass.
02:18The ash particles liquefy as they move through the superheated core,
02:22but as soon as they strike the cooler engine blades,
02:25the molten material hardens again, forming a rough, uneven ceramic crust.
02:31What begins as a dusting quickly becomes a layer thick enough to trigger catastrophe.
02:37Then comes the moment every pilot dreads.
02:40The engine stalls and flames out.
02:42The aircraft, once powered by precise combustion and thousands of coordinated metal parts,
02:48becomes a silent glider in the night sky.
02:51There was no high-tech fix, no switch to reverse the damage instantly.
02:55The only solution is terrifyingly simple.
02:58Descend.
03:00Pilots must drop rapidly out of the ash cloud,
03:03letting the engines cool enough for the ceramic layer inside
03:05to contract and crumble back into particles.
03:09Only then can the engines breathe clean air again, and possibly restart.
03:14The process can take minutes.
03:16It feels like hours.
03:19The world learned this the hard way in 1982,
03:21when British Airways Flight 9 unknowingly flew into ash from Indonesia's Mount Galangang.
03:28Within moments, all four engines failed.
03:31The aircraft slipped into a powerless glide,
03:34descending 25,000 feet in eerie silence.
03:37The crew could only watch the ocean rising toward them as the engines spun hopelessly.
03:42At barely 8,000 feet above the water,
03:45after 14 agonizing minutes, one engine coughed back to life.
03:50Then another.
03:52Then all four.
03:53The passengers and crew survived, but aviation was forever changed.
03:58As the highly gooby ash cloud drifts over northern India,
04:02the DGCA has issued strict advisories to avoid every ash-affected airspace,
04:08rethink flight paths, recalculate fuel, and stay far from danger zones.
04:13For airlines, it means delays, cancellations, and rerouted journeys.
04:18For travelers, it means longer trips and darker skies.
04:21For pilots, it means vigilance against an enemy they cannot see until the engines go quiet.
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