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| OBSERVATION/DAMAGE LIMITS | CORRECTIVE ACTION | |------------------------------------------------|----------------------------| | than 6 mm (0.25 in) (continuous). | | | | | | RIB UNDERCUTTING | | | . Radial and bias tires | | | - if undercutting goes more than 5.5 mm | Remove the tire | | (0.22 in) below the rib. | | -------------------------------------------------------------------------------
(2) Sidewalls
-------------------------------------------------------------------------------| OBSERVATIONS/DAMAGE LIMITS | CORRECTIVE ACTION | |------------------------------------------------|----------------------------| | RADIAL or INCLINED CUTS, CRACKS OR SPLITS | | | . Radial and bias tires | | | - if the sidewall cords are in view or damaged| Remove the tire | | | | | SEPARATION/BULGES | | | . Radial and bias tires | | | - separation on the sidewalls : | Remove the tire. | | none permitted. | | | | | | - blisters or bulges : | Remove the tire. | | none permitted. | | | | | | WEATHER/OZONE CRACKING | | | . Radial and bias tires | | | - if weather or ozone checking or cracking | Remove the tire | | goes to the cords | | -------------------------------------------------------------------------------
(3) Beads
-------------------------------------------------------------------------------| OBSERVATIONS/DAMAGE LIMITS | CORRECTIVE ACTION | |------------------------------------------------|----------------------------| | 1. The bead wires are in view (radial and | Remove the tire. | | bias tires): none permitted | | | | | | 2. The beads or the bead wires are deformed | Remove the tire. | | (radial and bias tires): none permitted | | | | | | | | | 3. The part of the bead that touches the rim | |
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| OBSERVATIONS/DAMAGE LIMITS | CORRECTIVE ACTION | |------------------------------------------------|----------------------------| | flange is worn (radial only) | | | - make an estimate of the depth of the wear : | | | . depth > 1 mm (0.0394 in.) | Remove the tire. | | . depth < 1 mm (0.0394 in.) | Keep the tire on the | | | aircraft. | | | | | 4. Blisters on the top of the bead above the | Remove the tire | | rim flange (radial and bias tires): | | | none permitted | | -------------------------------------------------------------------------------
NOTE : - Only one type of repair is permitted:
____ The filling of cuts with the applicable materials after the cleaning of the tires and the removal of unwanted objects.
-After the removal of a tire, there are two possible
solutions:
You can retread the tire. Send it to the retreader. He will
examine the tire and make the decision to retread it after a
possible repair, or to reject it.
You cannot retread the tire. Reject the tire.
Subtask 32-41-00-210-055
E. Tire Utilization Limits (DUNLOP)
(1) Permissible damage limits for tires Tires damaged within the limits below can remain in service :
(a)
Superficial cuts in the tread and/or sidewall rubber that do not go into the breakers or the cords of the casing plies.
(b)
Cracking or splits in the sidewall if you cannot see the cords of the casing plies.
(c)
Unevenly worn tires or tires worn on the shoulder can remain in service until worn to the base of the tread pattern or to normal wear limits whichever occurs the sooner.
(d)
Tires which have been subjected to sideways scrubbing can remain in service until fully worn.
(e)
Skid burns or scalds can remain in service if the damage does not go into the base of the tread pattern or is not likely to cause serious out of balance.
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(f) Rubber blisters in the lower sidewall if:
-
The blisters are not more than two and none of them is more
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