Airlines protested the closure of airspace during the volcanic eruption, but lack of consensus on safe levels of ash left regulators feeling they had little choice In 1919, the US Army Air Service listed 27flying regulations. No. 12 stated, “If you see another machine near you, get out of its way.” Just over 90 years later, despite an array of sophisticated satellite measuring and tracking capabilities and reams of engine data, the only existing ICAO instruction ...

Subscribe to Access this Entire Article

"Small Eruption, Massive Fallout" is part of ATW Plus, our online premium membership. Subscribing will provide you access to exclusive news, carefully researched airline financial, fleet and traffic data, plus the option to receive our popular, award-winning print magazine. To learn more, click here. If viewing via ATW Mobile, please login and click "Read web article" to view fully. Questions? ATWPlus@penton.com.

Already registered? here.