Center Weather Advisory An unscheduled weather advisory issued by Center Weather Service Unit meteorologists for ATC use to alert pilots of existing or anticipated adverse weather conditions within the next 2 hours. A CWA may modify or redefine a SIGMET.

Aero Linx: Porterfield Airplane Club From The Webmaster: I don't know if any of you were a member of the "Porterfield Airplane Club" which Chuck Lebrecht hosted for many years. Chuck has decided to give up the Porterfield Club due to health and economic reasons. I've taken it upon myself to keep the legacy going and have started this social web site dedicated to "Keeping the Skinny Birds Flying."

"Our long-standing involvement on both the Atlas V and Delta IV launch vehicles is a strong demonstration of our workforce’s engineering and manufacturing abilities. Our support of ULA EELV missions is a critical element of our aerospace structures business, and we are proud to provide support for these marquee launch vehicle programs.” Source: Steve Earl, Vice President and General Manager of Orbital ATK’s Aerospace Structures Division, in comments made after Orbital ATK was awarded a contract from United Launch Alliance (ULA) for large-size composite structures to be used for the Atlas V and Delta IV vehicles in support of the current United States Air Force Evolved Expendable Launch Vehicles (EELV) pro