Make sure that you get that guarantee in writing from the next airline company you choose to fly with.
Some things don’t have to be “guaranteed”.
Unless the person is an idiot, they EXPECT the plane to have no issues.
Did the people who died in those Toyota cars when the engines just DIED on the road have a GUARANTEE that the engine wouldn’t just stop for NO REASON?
No, you know they didn’t.
Too many here surpass conservative and go straight into donkey’s behind territory.