-
The blisters are not less than 304.8 mm (12.0000 in.) apart
when measured circumferentially.
Within these limits both blisters can be in the same sidewall.
Puncture any such blisters with an awl held parallel to the
sidewall and be careful not to damage the casing cords or
puncture the tire.
Subtask 32-41-00-210-056
F. Bias and Radial Tire Utilization Limits (GOODYEAR)
(1)
Tread Wear Make a visual inspection of the treads and do a check of the remaining tread. You must remove the tires when the tread has worn to the base of any groove at any spot. You must remove the tires worn to the fabric in the tread area regardless of the tread remaining.
(2)
Uneven Tread Wear If tread wear is excessive on one side, you can remove the tire and turn it around, if you cannot see the fabric. Gear misalignment which causes this condition must be corrected.
(3)
Tread Cuts Make an inspection of the tread for cuts and other foreign object damage and make a mark with crayon or chalk. Follow the removal criteria below :
-Any cuts into the reinforcing material.
-Cuts that extend more than half of the width of a rib and deeper than 50% of the remaining groove depth.
(4)
Sidewall/Bead Damage Remove tire from service if weather checking, cracking, cuts and snags extend down to a carcass ply in the sidewall and bead areas. Cuts and cracks into the plies cause the tire to be scrapped.
(5)
Bulges Bulges in a part of tire tread, sidewall or bead areas indicate a separation or damaged tire. Make a mark with crayon and remove from service immediately.
(6)
Fabric Fraying/Groove Cracking You must remove the tires from service if groove cracking exposes fabric or if cracking undercuts tread ribs.
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(7) Flat Spots Usually, tires need not be removed because of flat spots due to skid
of hydroplane burns unless you can see the fabric. If this causes a not satisfactory unbalance, remove the tire from service.
Subtask 32-41-00-210-057
G. Tire Utilization Limit (BRIDGESTONE) R (Ref. Fig. 612/TASK 32-41-00-991-031)
(1) Criteria relative to trend wear.
NOTE : for the Bridgestone tires with 6 grooves Airbus recommends,
____ under normal wear conditions, the center grooves remain the wear point. The outer groove is not as deep as the other grooves.
-------------------------------------------------------------------------------| CONDITION | LIMITATION | ACTION | |-----------------------------------------------------------------------------| | | Radial tires | | | | 1. The groove depth is more than | 1. Keep the tire on | | | 1 mm on the whole tread. | the aircraft. | | | | | | NORMAL WEAR | 2. The groove depth is less that | 2. Remove the tire. | | | 1 mm at any point of the | | | | tread surface. | | | | | | | | 3. The aramid protector is in | 3. Remove the tire. | | | view. | | | |---------------------------------------------------------| | | Bias tires | | | | 1. The groove depth is more than | 1. Keep the tire on | | | 1 mm on the whole tread. | the aircraft. | | | | | | | 2. The groove depth is less than | 2. Remove the tire. | | | 1 mm at any point of the | | | | tread surface | | | | | | | | 3. The reinforced fabric is in | 3. Remove the tire. | | | view. | | |-------------------|----------------------------------|----------------------| | | Radial tires | | | | 1. The flat spot does not go as | 1.1. Keep the tire | | | far as the aramid protector | on the | | | and the tread depth is higher | aircraft. | | FLAT SPOT ON | than the normal specification | 1.2. Remove the |
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Table of cut depth and length limits - BRIDGESTONE (bias and radial tires) R Figure 612/TASK 32-41-00-991-031
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-------------------------------------------------------------------------------
| CONDITION | LIMITATION | ACTION |
|-----------------------------------------------------------------------------|
| TREAD SURFACE | for tire removal in the whole | tire. |
| | flat spot area and there is | |
| | no start of separation and: | |
| | | |
| Caused by too | 1.1. You do not find vibration | |
| much brake | during taxi. | |
| application | 1.2. You find vibration during | |
| | taxi. | |
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