Boeing 787 Dreamliners in global service have been grounded since mid-January as the aircraft maker is working to solve battery problems.
One more incident with shooting between North and South Korean troops happened on the border between Koreas.
Hong Kong protesters have reoccupied the Mong Kok district, a core protest zone, early on Saturday, causing violent clashes with police.
The US Department of State wants to see a negotiated agreement reached from the leaders attending the 10th Asia-Europe Meeting (ASEM) Summit in Milan that would bring an end to the fighting in Eastern Ukraine, US Department of State spokeswoman said.
The deployment of a US advanced missile defense system in South Korea currently under consideration in Washington may trigger a strong negative reaction from North Korea, China's deputy chief envoy to the talks urged Friday.