SHANGHAI (Reuters) - Hainan Airlines Holding said it plans to spend 28.9 billion yuan ($4.2 billion) on planes and issue 15 billion yuan of convertible bonds.

Hainan Airlines plans to purchase 19 planes, it said in a Shanghai stock exchange filing on Saturday.

(Reporting by Wang Jing and Engen Tham; Editing by Edwina Gibbs)