Chinese writings on this movie plane
It literally means &quot;East Asia West Asia Airlines&quot;:

东亚西亚航 - Simplified
東亞西亞航 - Traditional

However, the character for Asia is written the way it is in Japanese: 亜. As far as I know, there's no deep meaning behind the choice of 亜 (or for the bizarre name). It's from an Indiana Jones movie and the airline is fictional. In answering this question, I found the Wikia entry for it!