The FAA’s Draft Advisory Circular 20-147A released last month provides new guidance to aircraft manufacturers on compliance with regulations covering engine induction system icing and engine installation ice requirements. Comments on the draft AC are due by November 1.
Despite the fundamental role of clouds in weather, there is much we don’t know about them. NASA intends to do something about that under a 24-month, satellite-based mission scheduled to launch next year. Called CloudSat, the program is aimed at better understanding how clouds affect climate in terms of their thickness, height, absorption, and water and ice content.
A new NASA study claims that man-made cirrus clouds formed by commercial jet engine exhaust might be responsible for increased surface temperatures detected in the U.S. between 1975 and 1994.
Climate data shows that cirrus cloud cover over the U.S. has increased by 1 percent per decade, and the report says the rise is likely due to commercial air traffic.