Ryanair flight FR7312 from Dublin to Zadar made an emergency landing in Frankfurt.
The airline confirmed oxygen masks were automatically deployed and the aircraft carried out a "controlled descent" descending some 8,000m (26,000ft) from 11,300m to 3,000m inside seven minutes, suggests monitoring Flight Radar .
Ryanair said the plane "landed normally and customers disembarked, where a small number received medical attention as a precaution".
The plane was carrying 189 passengers, 33 of whom were hospitalised, and some decided not to continue with their journey, German police said.
In a statement Ryanair said it would pay for hotels for the affected passengers but added that there was a "shortage of available accommodation".Ryanair is Europe's largest airline by passenger numbers, according to the International Air Transport Association. It flies in 37 countries and carried 130 million passengers last year.
Source: Ryanair, CNS, BBC, ADN, CNN.
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