A Jet2 plane was forced to make a second emergency landing in the space of two weeks following a recurring technical problem.
The first incident involving the aircraft occurred on 16 July during a flight from Ibiza. The plane which was bound for Leeds was diverted to Barcelona. On Friday (28 July) after an apparent recurrence of a technical problem, the plane which was headed for Prague, was diverted to Frankfurt.
Passengers on both flights reported that oxygen masks were released as the aircraft began to descend at speed, sparking panic.
Describing the first flight from Ibiza, passenger Tom Miller told BBC Look North: "You're going down and there is so much panic. It levelled out but if felt so close to the water."
Passenger Philippa Bell shared pictures from the flight on social media showing her husband and other passengers using the oxygen masks.
Jet2 said that a "minor technical fault" led to oxygen masks being deployed and insisted that passenger safety had not been compromised.
In a statement a spokesperson for Jet2 said: "Our flight crew followed procedure and made a controlled descent before landing safely. At all times the safety of our passengers is our number one priority... and at no point was the safety of passengers compromised.
"On landing, our crew liaised with everyone on board to ensure their welfare. "
The aircraft had been grounded while engineers carry out a "thorough inspection" the airline confirmed.
"Over the next few days our most senior engineers will be investigating the aircraft fully. At this stage it is too early in the process to comment on the cause of the technical fault. We would like to apologise to our customers, as safety is always our highest priority."