London,  UK, 2013-11-12 — /travelprnews.com/ — China’s flag carrier airline, AIR CHINA has seen it’s Quality Ranking downgraded to 3-Star Airline status with effect from November 2013 in the latest review of airline standards by aviation research organisation, Skytrax. “In the period 2009-2011, we witnessed considerable improvement in Air China quality standards, which resulted in the airline achieving 4-Star Airline status… Read the full press release