Qantas is investigating the cause of another engineering problem.
More than 200 passengers were stranded in Sydney last night when their New Zealand bound flight was aborted just before take off after damage was found on the right wing.
Meantime, it's been revealed faulty Qantas and Jetstar equipment is responsible for nearly half of all curfew breaches at Sydney airport over the past twelve months.
Water leaks on vital electrical equipment, fuel leaks and faulty brake hoses are some of the reasons for delayed flights.