Aircraft Tires
Care and Maintenance Tire Care and Maintenance
10. Removal by tire condition other than tread wear
If the following phenomenon are found, or incidents are reported, remove the tire for inspection by Bridgestone.
| A. | Exposure of reinforcing fabric (bias) or aramid cord protector (radial) resulted by spot wear, tread reversion, groove cracking, rib tearing. |
|---|---|
| B. | Tread cut reaching the depth and length limit. |
| C. | Rib undercutting. |
| D. | Chevron cut exposing the reinforcing fabric (bias) or aramid cord protector (radial) by 5 cm squared or more. |
| E. | Tread separation, peeled rib, open tread splice, impact break, skid burst, bulge/blister, casing break up, heat burst. |
| F. | Cord exposure caused by sidewall cracking, weathering & radial cracking. |
| G. | Inflation pressure loss by more than 10% at daily check.* |
| H. | Experienced hard-landing. |
*
IF THE INFLATION PRESSURE LOSS IS MORE THAN 10%, REPLACE THE TIRE.
IF YOU RE-INFLATE AND KEEP USING THE TIRE, THERE IS A RISK OF TIRE BURSTING.
11. Dismounting Bias Tires
- Inflated gas shall be released completely before removing the tire from the wheel assembly.
- Pay attention to avoid the valve-core being projected at tremendous speed when removing it from the valve.
- Bead-breaking; removing tire bead areas from rim flanges, shall be done by applying pressure evenly at tire surface as close to the rim flanges as possible.
- The bead-breaking-press should have cylindrical brims to contact with the entire sidewall of the tire.
- Once the bead-areas parted from the rim flanges, do not press tire sidewall further more.
12. Dismounting Radial Tires
Procedure is partly different from that for the bias tires. Please refer to Section II, "Instructions Specific to Radial Tires."
13.Remounting of tires
If a wheel and tire assembly is returned from service due to a finding on the wheel assembly with;
(1) A partially worn tire (if the tire was installed on aircraft)
Bridgestone cannot allow the tire to be re-mounted on another wheel because the tire may experience operation under extremely severe conditions.
(2) A tire that has not experience any service (if the tire was not installed on aircraft)
The tire can be re-mounted on another wheel in case no anomalies stated in the chapter “Examination & Recommend Action” can be found on the tire.
14. Tire condition unsuitable for retreading
If the following conditions are detected, the tire is not retreadable.
| A. | Bias tires with cut penetrating to 40% and more of the actual number of carcass plies. |
|---|---|
| B. | Radial tires with cut penetrating the casing belt plies beyond repair limit, or when the casing plies are exposed. |
| C. | Reinforcing cords are exposed at the sidewall or bead area, due to cut or weathering. |
| D. | Spot-wear exposing the carcass or belt cords more than 10 inches squared. |
| E. | Melted reinforcing-cords at bead-base, due to overheating. |
| F. | Bead wires are exposed or bent. |
| G. | Wrinkles at the surface of innerliner. |
| H. | Axle mate of burst tire. (Both should be scrapped). |
| I. | Casing separation. |
| J. | Removed due to RTO or hard landing. |
| K. | Removed due to over speed take off or landing. |
Category Link:
Tire Care and Maintenance
- 10. Removal by tire condition other than tread wear
11. Dismounting Bias Tires
12. Dismounting Radial Tires
13. Remounting of tires
14. Tire condition unsuitable for retreading - 15. Matching Tire Diameters
16. Tire Flat-spot
17. Protection from Contamination
18. Maintenance of Airport Surfaces - 19. Tires in Other than Aircraft Service
20. Storage of Tires
21. Handlings of tires
22. Transportation & Storage of Tire/Wheel Assemblies
23. Precautions during Unloading
24. Service Claim Memorandum
