United Airlines has blamed Boeing for a $200m (£161m) hit to its earnings in the first three months of this year.
The carrier was forced to ground its Boeing 737 MAX 9 fleet for three weeks after a mid-air cabin blowout on an Alaska Airlines flight in January.
United said that pushed it to a pre-tax loss of $164m for the first quarter.
If you bought a car and the door just fell off while you were driving to work one day, would it be your fault for not checking the bolts?
It is much easier to check the bolts on your car door than the bolts on a door plug. They’re not hidden behind a wall like the door plug bolts.
On the other hand, airplanes come with much stricter maintenance schedules. You don’t have to replace the engine of your car every 500 hours, you might need to in an airplane.
The question is what is in the service manual. It might look unreasonable, but it’s part of the deal when buying a plane. If a competitor makes a plane that needs less maintenance, airlines will buy more of that plane.