Wilson said he was hopeful the number of planes affected by manufacturing issues would be in the single digits out of a fleet of over 550, but that Boeing had not yet provided a detailed delivery schedule. "We'll be able to absorb this in terms of frequency reduction," said Wilson, chief executive of Ryanair DAC, the largest airline in the Ryanair Group. "It won't be material, it won't affect people, because all the bookings aren't in for August," he added.