1. It aims to provide engines for the homemade jumbo jet in order to wean from its reliance on foreign companies.
2. Meteorologists warn that the skies over Europe remain unstable from an Icelandic volcano that continues to spew ash capable of knocking out jet engines.
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3. Experts say that particles in the ash could stall jet engines and sandblast planes'windows.
4. The biofuel exceeded specifications for regular jet fuel, and no modifications to the plane or its engines were needed.