Channel width is the distance across the screw channel perpendicular to the flight as measured at its periphery. Clearance (radial clearance, diametrical clearance) is the difference in the diameters ...

A Virgin Atlantic flight destined for New York City was cancelled just moments before takeoff when a concerned passenger observed missing screws on the plane's wing. British traveler Phil Hardy ...

Virgin Atlantic canceled a flight to New York after a passenger noticed missing parts from the aircraft’s wing. The airline conducted additional maintenance checks following the incident.