A United Airlines flight touched land before reaching destination twice in the wake of a medical emergency, then a mechanical issue.  

A horrible ordeal for passengers on a United Airlines flight from Newark to Hong Kong. The plane took off Saturday afternoon. It then had to be diverted to Newfoundland, Canada for a medical emergency.

As it went to take off again, there was a mechanical issue.

The plane sat on the tarmac for 14 hours in temps that were below 20. 

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Passengers could not get off the plane because there was not a customs officer on duty. 

The flight resumed earlier Sunday and has since landed in Hong Kong.