Ja, de sa det skulle komme før nyttår! 
http://www.flightglobal.com/article...est-receive-single-operating-certificate.html
Integration between Delta Air Lines and Northwest Airlines continues to advance as today the FAA granted the carriers a single operating certificate following their merger in October 2008.
http://www.flightglobal.com/article...est-receive-single-operating-certificate.html