Incident at CYMON Intersection

2010-06-10: UPDATE TSB: A10A0055: N780UA, a United Airlines Boeing 777-200, was en route from Chicago to Munich when the flight crew noted that the EICAS "LOW CREW OXYGEN" message had illuminated. The pilots queried the status page and observed crew oxygen pressure read zero. The crew declared an emergency and requested and received a clearance to divert to Gander. Shortly thereafter the crew noted that the EICAS message had extinguished and the crew oxygen pressure was indicating normal. They requested and received a clearance to continue to the original destination and the aircraft exited Canadian airspace without further incident.

2010-05-25: UAL906, Boeing 777-200, enroute from Chicago (KORD) to Munich (EDDM), at CYMON Intersection at 02:36Z, at 36,000 ft, declared an emergency due to a lack of oxygen in the cockpit. The aircraft turned towards Gander (CYQX) and descended to 10,000 ft. The oxygen problem was corrected at 02:57Z and the flight crew decided to proceed to the original destination. TSB Case Closed.