A UK-based businessman aboard the missing Titanic sub once survived a nightmare plane trip that left people fearing they would die, it has been revealed.
Shahzada Dawood and his teenage son, Suleman, are among the five passengers thought to be trapped on the deep-diving OceanGate vessel, which was last heard from on Sunday afternoon.
Oxygen on the missing Titanic submersible is expected to run out by midday on Thursday, with rescue efforts to find the five people onboard continuing late last night.
The vessel, named Titan, lost communication with tour operators on Sunday while about 435 miles south of St John's, Newfoundland, during a voyage to the Titanic shipwreck off the coast of Canada.
