.
Cuts
Penetration by a foreign object.
.
Spiral Wrap
Some retreads have reinforcing cords wound into the tread which
become visible as the tire wears. This is an acceptable condition
and not cause for removal. The wrap reduces chevron cutting and
tread chunking.
.
Tread Chunking
A pock mark condition in the wearing portion of tread...usually
due to rough or unimproved runways. Remove if fabric is visible.
.
Tread Separation
A rather large separation or void between components in the tread
area due to loss of adhesion, usually caused by excessive loads
or flex heating from underinflation. Remove immediately.
.
Groove Cracking
A circumferential cracking at the base of a tread groove; remove
if fabric is visible. Can result from underinflated or overloaded
operation.
.
Rib Undercutting
An extension of groove cracking progressing under a tread rib; remove
from aircraft. Can lead to tread chunking, peeled rib or thrown
tread.
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.
Peeled Rib
Usually begins with a cut in tread, resulting in a circumferential
delamination of a tread rib, partially or totally, to tread reinforcing
ply. Remove from aircraft.
.
Thrown Tread
Partial or complete loss of tread down to tread fabric ply or casing
plies. Remove from aircraft.
.
Skid
An oval-shaped flat spot or skid burn in the tread rubber. May extend
to or into fabric plies. Remove if balance is affected or fabric
is exposed.
.
Tread Rubber Reversion
An oval-shaped area in the tread similar to a skid, but where rubber
shows burning due to hydroplaning during landing, it is usually
caused by wet or ice-covered runways. Remove if balance is affected.
.
Open Tread Splice
A crack in the tread rubber where the joint or splice separates
in a radial direction. Remove from aircraft.
.
Chevron Cutting
Tread damage caused by running and/or braking on cross-grooved runways.
Remove if chunking to fabric occurs or tread cut removal criteria
are exceeded.
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Courtesy
of The Goodyear Tire & Rubber Company
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