What does the small triangle above some airplane windows mean?

The world of aviation is fascinating, with many details that must be aligned for something as delicate as a flight to run perfectly. That's why we see many signs on airplanes whose meanings are beyond the understanding of ordinary travelers.

One of them is the small triangle that can be seen above some windows on certain airplanes. Specifically, a Reddit user asked, "What do these markings on the walls of an Airbus 320 in aisles 8 and 15 mean?"

This small , usually black, triangle is marked on the inside wall of an aircraft and indicates the best vantage point from which to view the aircraft's wings and control surfaces.

The seats next to which the triangle is placed are called 'Shatner' , in honor of the American actor William Shatner, protagonist of a famous episode of the science fiction series The Twlight Zone , Nightmare at 20,000 Feet , which takes place in an airplane.

From the point marked by the triangle, the flight crew can monitor problems such as icing, damage, or incorrect flap position, especially during emergencies.

Meanwhile, for passengers, it means their seats have an unobstructed view of the wings, which is perfect for taking photos or even videos of their journey.

The triangle also helps travelers understand their position in relation to the wing , offering a unique perspective during the trip.

As for other purposes, some sources claim the triangles could also indicate points on the fuselage where emergency services could intervene if a serious situation arises.