Ground them as they did the Boeing 777 post Heathrow !!!!!!!!!!!!!!!!
When you look historically at crashes sadly flight crew error (and I'm not talking about this accident) is a common cause. Do we ground all aircraft flown by pilots!!!!!!!!!!!
Most North sea accidents for technical reasons have been one off accidents. Having just reread the accident report on the Chinook G-BWFC it is obvious just how thin the safety margin can be even when everyone thinks all the boxs have been ticked.
Complex machinery will always throw up the unexpected.