
One of a plane's flap fairings has round screw heads (not flat)
If you look closely in this photo at the closest of the three flap fairings, it appears WestJet mechanics have used round screw heads (rather than flat screw heads like the other flap fairings have) which protrude up.
Is this a safety concern, or merely a minor aerodynamic inconvenience? A short-term fix, or in fact a long-term repair?
Boeing 737-8CT's tail number is C-GWBL.