16 August 2013
United Flight UA-74 , Boeing 757-200 from Newark Liberty airport to Hamburg Germany it was en route at cruising altitude FL370 30 miles southwest of Stephenville when the airplane suffered a pressurization problem.The crew declared an emergency descent to FL100 and diverted back to Newark for a safe landing
Newark Liberty airport
Source
Canadian TSB
http://flightaware.com/live/flight/UAL74/history/20130816/2130Z/KEWR/EDDH