Pakistan International Airlines flight PK-782 had to return and make an emergency landing in Toronto, Canada, on December 7.
The Boeing 777-200, bound for Karachi, Pakistan, had to return after the pilot reported that the cabin was not pressurizing properly.
The plane landed uneventfully and was taken for examination.
The aircraft had first attempted to depart from Toronto on December 5 but returned immediately due to cabin pressurization issue. The technicians at Air Canada Hangers conducted maintenance after which it was cleared to take off again 2 days later.
Southwest Airlines flight WN-105 had to return for an emergency landing in Chicago, Illinois, on December 15th.
Polar Air Cargo flight PO-214 had to divert and make an emergency landing at Seattle – Tacoma International Airport, Seattle, Washington, on April 22nd.
Air Canada flight AC-623 veered off runway during landing at Toronto Pearson International Airport, Canada, on February 25th.
UPS flight 5X-605 had to return and make an emergency landing at O’Hare International Airport, Illinois, on January 18th.