Attention: UN001 mechanical problem, estimated time of departure (ETD) is delayed until 16:30. I say again, UN001 mechanical problem, estimated time of departure (ETD) is delayed until 16:30.

• 各单位注意：UN001因机械故障，预计起飞时间推迟到16:30。我再说一遍，UN001因机械故障，预计起飞时间推迟到16:30。