Newsreader said .." Probably a lack of oxygen in the cabin "...
Wonder if they mean a loss of pressurization or something else ?
update
From Schiphol AMS to Newark EWR, 7 pax and 8 crew unwell (not known if that included pilots), plane returned to AMS.
Oxygen problem, cause unknown.
Flight UA071, departed Schiphol at 10.37 hrs, passed Ireland, over Atlantic Ocean, then returns to Schiphol. Landed back at AMS at 14.57 hrs.
Hard landing, at least one tyre burst, small fire in MLG, quickly extinguished by AMS ARFF.
Pax transferred to other flights or to hotel.
DTSB at Schiphol already started investigation. Will talk to crew and check out recorders.
https://www.flightradar24.com/data/f.../ua71#102b91bf
767-322(ER)