PHENOMENON
Superficial rubber cuts happen on the tread. The cuts are shaped as “v” and extend across the tread.
POSSIBLE CAUSES
This phenomenon usually occurs on grooved runways at aircraft touches down, the tires are rotated rapidly and damaged by the runway groove edges.
RECOMMENDATION
If the reinforcing fabric (bias) or aramid cord protector (radial) is exposed and damaged, remove the tire from the aircraft.
If the chevron cuts extend across a rib from groove to groove, remove such tire from the aircraft.
If the cut protector is exposed over 5 cm2 due to tread chunking, remove such tire from the aircraft.
If more than one chevron cut reaches to the cut protector, remove such tire from the aircraft.
