BRIEF-Hainan Airlines' number of passenger carried up in March, cargo and mail down

April 14 (Reuters) - Hainan Airlines Co Ltd

* Says March passenger carried up 49.4 percent y/y, Q1 up

47.1 percent y/y

* Says March cargo and mail carried down 5.5 percent y/y, Q1

down 0.8 percent y/y

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(Reporting by Hong Kong newsroom)