For a decade, Cathay Pacific Airways Ltd has benefited from China's economic boom. But now the yuan currency depreciation and slowing growth are presenting a number of new challenges.

First, the economy posted its slowest growth in more than 20 years. Then about $3 trillion was wiped off the mainland's stock market after weeks of turmoil in July. Last week, the yuan fell by nearly 3 percent.

With 60 percent of Cathay's passengers starting their journeys from mainland airports, any negative impact in the world's second-biggest economy is an issue for Asia's largest international carrier.