關於「ARJ21 MD90」標籤，搜尋引擎有相關的訊息討論：

Comac ARJ21 - Wikipediaen.wikipedia.org › wiki › Comac_ARJ21The Story Of The COMAC ARJ21 - China's 90 Seat Regional Jetsimpleflying.com › Notification14 Years Ago Today The COMAC ARJ21 Made Its First Flightsimpleflying.com › History11/28/2008: First Flight of the COMAC ARJ21 -