Speaking at the aviation conference in London today, Mr Johnson's aviation adviser Daniel Moylan said Mr Johnson had not been consulted about the setting up of the commission and had been "profoundly unsettled" by its interim report.
Heathrow expansion is not any answer at all, for the proven political reason that it is too toxic for any Government to deliver.
To delete the option of a new airport from the process would mean there was only one solution left that satisfied the Commission's remit: a new runway at Heathrow followed by a fourth.
That is not a bargaining position that any Government will accept or a prescription that any Government will deliver.
The accusation comes as the mayor's aviation adviser uses a speech to launch a bitter attack.
London's Mayor was said to be "profoundly unsettled" by a report which sidelined his proposal for a new airport in the Thames estuary.