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View Diary: Breaking Iceland Volcano Grimsvotn Erupting (28 comments)

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  •  Thanks for the Diary, Nath. (7+ / 0-)

    This is important news.  If this thing blows, it could potentially ground an AWFUL lot of flights.  

    The summer season is gearing up.  

    The last Iceland volcano when it blew (I believe it was the Vatna-fjalla-Jökull) it caused a huge disruption to the airline industry.  This time it could be worse.

    Interestingly, after the last volcano, the europeans discovered that they WERE correct in grounding the planes.  Remember how much complaining about being stranded here and there?  Well it turns out that volcano dust is basically like powdered glass - it gets into the jet engines, and it destroys them.  

    So Yeah I'd rather be stranded than have the jet engines seize up in mid-air.

    •  that Volcanic dust was well known to damage jets (5+ / 0-)
      * On June 24, 1982, the captain of a British Airways jumbo jet en route from Kuala Lumpur to Perth, Australia, came on the speaker system at around 37,000 feet and calmly told the 247 passengers on board that all four of its engines had failed.

      In an incident that went down in aviation history, Captain Eric Moody glided the jet down more than 20,000 feet and managed to restart one engine at 13,000 feet followed by others, according to the Flight Safety Foundation (aviation-safety.net).

      It was only later that investigators found the combination of engine failure, an eerie luminous glow around the plane and acrid smoke inside the cabin had been caused by flying into a cloud of volcanic ash from the eruption of Mount Galunggung.

      The aircraft landed safely on three engines but the incident prompted new flight procedures and international exercises. * On December 15, 1989, all four engines failed again when a KLM jumbo jet from Amsterdam flew into a cloud that turned out to be volcanic ash while descending to Anchorage, Alaska. The engines resumed working and the plane landed safely but badly damaged.

      That incident was blamed on lack of sufficient information provided to the crew, the Flight Safety Foundation says.


      Mt. St. Helens, United States, 1980.
      A 727 and a DC-8 encountered separate ash clouds during this major eruption. Both airplanes experienced damage to their windshields and to several systems, but both landed safely despite the windshield damage.

      Mt. Redoubt, United States, 1989.
      On a flight from Amsterdam to Anchorage, Alaska, a new 747-400 (only three months old with approximately 900 hr total flying time) encountered an ash cloud from the erupting Mt. Redoubt near Anchorage. All four engines ingested ash and flamed out. The crew successfully restarted the engines and landed safely at Anchorage.

      All four engines were replaced and many airplane systems also had to be repaired or replaced. For example, the airplane environmental control system was replaced, the fuel tanks were cleaned, and the hydraulic systems were repaired. Several other airplanes encountered ash from this eruption, but most damage was minor because operators had been notified of the eruption. Some operators, such as Alaska Airlines, continued scheduled flights once they developed processes to safely identify where ash might be encountered. Although information was available about the Mt. Redoubt eruption, the channels for sharing this information were not well developed at the time (see "Alaska Airlines Procedures for Operating in Volcanic Ash Conditions").

      the issue with Eejalakufyl, was how muc airspace to close.

      George Bush is Living proof of the axiom "Never send a boy to do a man's job" E -2.25 S -4.10

      by nathguy on Sat May 21, 2011 at 01:38:59 PM PDT

      [ Parent ]

      •  Hopefully you'll have a whole series (0+ / 0-)

        of diaries about all the shit this volcano is spewing, therreby endangering us all - ala Fukishama . . . . .

        •  more likely (1+ / 0-)
          Recommended by:
          Cliss

          updates on the air traffic impacts.

          volcanic gasses and lava and pyroclastics flows are dangerous, but iceland is sparsely populated so it's unlikely to be too dangerous to people but it is tossing some medium altitude stuff,  word is air corridor closure is 120 NM

          George Bush is Living proof of the axiom "Never send a boy to do a man's job" E -2.25 S -4.10

          by nathguy on Sat May 21, 2011 at 09:02:54 PM PDT

          [ Parent ]

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