# All Four Engines Stopped Over Java. That's Why Jakarta Just Shut.

*World · 8 September 2026 · RECORDx NEWS*

Watch: https://www.youtube.com/watch?v=9MrleGvXiqo
Page: https://news.recordx.co/story/all-four-engines-stopped-over-java-thats-why-jakarta-just-shut/

Anak Krakatau erupted for about twenty five hours from 4 September 2026. Eight Indonesian airports closed, 1,558 flights were cancelled or delayed and roughly 341,000 travellers were affected. Almost every report led with the stranded passengers. Almost none explained why an airport closes for ash at all.
It is not visibility. Volcanic ash is powdered rock, and the burner section of a jet engine runs hotter than that rock's melting point. Ash entering the engine melts, then re-solidifies as glass on the cooler turbine blades behind it and chokes the engine. Weather radar cannot see ash, so the rule was never detection. It is avoidance, and the airports underneath the plume close.
That rule was written over this same island. On 24 June 1982 a British Airways 747 with 263 people aboard flew into ash from Mount Galunggung and lost all four engines, falling 23,500 feet across roughly thirteen minutes before the crew restarted them and landed at Jakarta. Nineteen days later a second 747 flew into ash from the same volcano and lost three engines. It also landed at Jakarta.
The US Geological Survey counted 94 confirmed encounters between aircraft and volcanic ash from 1953 to 2009. Nine lost an engine in flight. Three lost all of them. None crashed.
Footage: licensed stock, and a NASA Goddard ash dispersal visualisation (Calbuco, 2015, public domain) shown as a model of how ash travels, not as this eruption. No frame in this video is footage of Anak Krakatau.

## The story

Anak Krakatau erupted continuously for about twenty five hours from 4 September Eight Indonesian airports closed, 1,558 flights were cancelled or delayed, and roughly 341,000 travellers were affected. Every outlet led with the stranded passengers. The fact under it that nobody led with is why an airport closes for ash. Not visibility. Volcanic ash is powdered rock; the burner section of a jet engine runs hotter than that rock's melting point, so ash entering the engine melts, then re-solidifies as glass on the cooler turbine blades just behind and chokes the engine. Weather radar cannot see ash, so the rule was never detection. It is avoidance, and the airports underneath the plume close. That rule was written by two aircraft, over this same island. On 24 June 1982 a British Airways 747 with 263 people aboard flew into ash from Mount Galunggung and lost all four engines, falling 23,500 feet across about thirteen minutes before the crew restarted them and landed at Jakarta. Nineteen days later a second 747 flew into ash from the same volcano and lost three engines. It also landed at Jakarta. So the closure this week is not caution. It is those two flights, still being obeyed, by the very airport that saved them.

## What this story does not claim

Not "23 minutes" or "91 nautical miles" for BA9. That is the crew's calculation of how far they could glide. It was ~13 minutes without power and 23,500 ft lost. Most secondary sites get this wrong. Not "stranded" for the 341,000. Sources disagree; that figure is "affected". 170,000 and 270,000 also circulate for "stranded". Not "zero tolerance is the rule." That was the post-1982 doctrine and it caused the 2010 Eyjafjallajökull shutdown, but it was relaxed to concentration-based zones. Say avoidance, not zero tolerance. No current height for Anak Krakatau. 189 m and 157 m both circulate for 2026 and neither is well sourced. The 2018 collapse from 338 m to ~110 m is solid, but the reel does not need it and does not use it. No claim that this eruption endangered any aircraft. Nothing reported does. The reel's point is the opposite: the rule worked. Never call Moody's PA announcement a cockpit-voice-recorder quote. The reel does not quote him at all.

## What this story does not claim

Not "23 minutes" or "91 nautical miles" for BA9. That is the crew's calculation of how far they could glide. It was ~13 minutes without power and 23,500 ft lost. Most secondary sites get this wrong. Not "stranded" for the 341,000. Sources disagree; that figure is "affected". 170,000 and 270,000 also circulate for "stranded". Not "zero tolerance is the rule." That was the post-1982 doctrine and it caused the 2010 Eyjafjallajökull shutdown, but it was relaxed to concentration-based zones. Say avoidance, not zero tolerance. No current height for Anak Krakatau. 189 m and 157 m both circulate for 2026 and neither is well sourced. The 2018 collapse from 338 m to ~110 m is solid, but the reel does not need it and does not use it. No claim that this eruption endangered any aircraft. Nothing reported does. The reel's point is the opposite: the rule worked. Never call Moody's PA announcement a cockpit-voice-recorder quote. The reel does not quote him at all.

## References

- https://pubs.usgs.gov/ds/545/DS545.pdf
- https://www.youtube.com/watch?v=9MrleGvXiqo**
- https://images-assets.nasa.gov/video/GSFC_20160512_Volcanic_m12221_Ash/GSFC_20160512_Volcanic_m12221_Ash~orig.mp4

Reporting drawn from: PVMBG / Badan Geologi (alert Level III, Siaga, since 2 July 2026); USGS Data Series 545, Encounters of aircraft with volcanic ash clouds 1953-2009; ICAO Doc 9691, since 2 July 2026);, LIVE AND PUBLIC

## Footage

- source
- Mixkit 4642 — airport terminal, moving walkway
- Mixkit 52284 — flame on black, native 1080x1920
- Mixkit 1960 — vapour swirls
- Mixkit 4368 — window view, engine nacelle over cloud
- Mixkit 4204 — wing at dusk
- Mixkit 4695 — ridge above a cloud sea at dawn
- Mixkit 3428 — city street, people walking
- NASA Goddard `GSFC_20160512_Volcanic_m12221_Ash`, globe with ash plume
- Same NASA asset, Suomi NPP particle view
- Mixkit 2168 — tropical beach sunset

## Transcript

Eight airports closed this weekend. One thousand five hundred and fifty-eight flights canceled or delayed. Three hundred and forty-one thousand travelers hit. And none of it was about visibility
A volcano in the Sunda Strait called Anak Krakatau erupted without stopping for 25 hours. The sound carried 700 kilometers. Ash climbed 15 kilometers over Sumatra
Ash is nearly invisible to the weather radar in an airliner's nose. A crew can fly into it in clear air and see nothing coming. What happens then is the reason those airports shut
Ash is powdered rock, and rock melts. A jet engine's burner runs hotter than that melting point, so the ash turns to liquid glass. It hits the turbine just behind, which is cooler, and freezes there on the blades. The engine closes like a blocked drain
We know exactly what that looks like because it happened over this same island. On the 24th of June 1982, a British Airways 747 carrying two hundred and sixty-three people flew into ash from Mount Galunggung. All four engines stopped
The aircraft fell 23,500 feet. For about 13 minutes, it was a glider. The crew restarted the engines and landed at Jakarta. Nineteen days later, a second 747 flew into ash from the same volcano and lost three engines. It landed at Jakarta, too
Those two flights wrote the rule book. Not detection, avoidance. Fly around the ash and close the airports underneath it. So this weekend was not an overreaction. It was 1982 still being obeyed
The United States Geological Survey logged 94 confirmed encounters between aircraft and volcanic ash up to 2009. Nine lost an engine in flight. Three lost all of them. None of them crashed
Zero is not luck. Zero is the rule working, and it has to keep working because every new generation of jet engine runs hotter than the last, and the temperature rock melts at has not moved
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## Topics

aviation safety, usgs, explainer

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