Seismicity remains elevated at Redoubt Volcano in Alaska. Melting of the glacier has produced a 200 m wide hole, which is emitting gas. The Federal Aviation Administration has issued a temporary flight restriction for a 10-mile radius around Redoubt, from ground level to 60,000 feet. During the last eruption in 1989, an aircraft flew through a plume of ash. All four engines ingested ash and flamed out. The crew successfully restarted the engines and landed safely at Anchorage. All four engines were replaced.
More on Redoubt Volcano...