The Daily Mail claims:
A United Airlines plane aborted its transatlantic journey and diverted to London today because the flight crew apparently wasn’t satisfied with the de-icing effort it received in Brussels.
But some commenters under the article regard this official reason as concealment or falsehood:
Correct. If the de-icing was not done correctly, the aircraft would have crashed on take-off. Since it was able to fly, climb to cruise altitude and travel several hundred miles, no further de-icing would be required. There was some other unreported reason for the diversion.
Is there any truth in these claims? Will an aircraft crash on take-off if the de-icing is not done correctly?