Air traffic controllers in Washington and the pilots of President Donald Trump’s helicopter met to discuss communication issues one week before a jet and the chopper were allowed to take off at the same time, the National Transportation Safety Board said Thursday.

Both sides met to discuss the failures in communications but didn’t come up with a solution, the NTSB preliminary report on the Aug. 4 incident at Ronald Reagan Washington National Airport shows.

Having both in the air at the same time seemed to violate safety procedures put in place after last year’s midair collision near the busy airport that killed 67 people.

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