“It is not warranted,” Steve Soboroff, a former president of the Los Angeles Police Commission and longtime supporter of the mayor, said of the criticism.

"I don’t understand this – it doesn’t make any sense - it's not warranted and not needed," Mr Nicholl said.

Once again, because Boeing committed to correcting the flawed process, the FAA decided enforcement action was not warranted.

It said it consulted with lawyers who advised that appealing the case was not warranted.

It's horrible and it's not warranted.