Shaheen, Cabin Failed to Pressurize
A Shaheen Airbus A319-100, registration AP-BNJ performing flight NL-766 from Lahore (Pakistan) to Dubai (United Arab Emirates), was climbing out of Lahore when the crew stopped the climb at FL110 due to problems with the cabin pressurization. The aircraft returned to Lahore for a safe landing about 35 minutes after departure. A replacement Airbus A320-200 registration AP-BMC reached Dubai with a delay of 3.5 hours. The occurrence aircraft remained on the ground for about 9 hours, then returned to service.