# SERVICE BULLETIN

GY SB 2012-32-001

SUBJECT: Goodyear Aviation Tire Part Numb er 299K63-1, Size H29x9.0-15, 16PR, 210MPH,

Produced in Brazil.

1. PLANNING INFORMATION :

A. Effectivity: 1) Aircraft affected: CRJ100/200 and Challenger 850 series

2) Units affected: Tire Part Number: 299K63-1 (new tires only, retreads are unaffected)

Tire Size: H29x9.0-15 Ply Rating: 16PR Speed Rating: 210 MPH Production Plant: Brazil (only tires produced in Brazil are affected) Serial Numbers: 01867xxx through 02737xxx

Note1: 5 th digit of serial number must be a “7” Note2: “xxx” can be any combination of three single digit numbers

B. Concurrent Requirements - None

C. Reason: 1) Tread separation incidents have occurred. Tire analysis results showed low adhesion in the tread shoulder area. Low adhesion can result in a tread separation. As a precautionary measure, Goodyear is requesting the inspection, removal, and return of tires in the designated serial number range.

D. Description: 1) This Bulletin provides instructions to inspect main landing gear tires for the serial numbers listed above. If tires in the designated serial number range are found, they

are to be removed from the aircraft at the next maintenance base where replacement tires (outside of the serial range above) are available. Any such tires located on aircraft or in warehouse, distribution and similar facilities are to be quarantined prior to return to Goodyear. NOTE: Tires are not to be returned to Goodyear without prior approval from Good year. Contact Goodyear Aviation Tire representatives for instructions.

E. Compliance: 1) Accomplish this Bulletin on aircraft mounted units at the next available maintenance opportunity, not to exceed 5 landings, as long as pre-flight inspections do not reveal a tread bulge (See Figure 2). If a tread bulge (Figure 2) is seen, the tire/wheel assembly must be replaced prior to further flight. Additionally, it is necessary to

DATE OF ISSUE: April 19, 2012 SB 2012-32-001



### 1 OF 4accomplish this Bulletin on inventory and spare units no later than 7 days from the date of issue of this Bulletin, or April 26, 2012.

F. Approval - Not affected. 1) This Bulletin contains no modification information that revises the configuration and therefore does not require government or other regulatory agency approval.

G. Manpower: 1) Inspection (approximately 10 minutes per aircraft) and, where applicable, removal & replacement (up to 2 man-hours may be required per mounted tire)

H. Weight and Balance - Not affected.

I. Electrical Load Data - Not affected.

J. Software Accomplishment Summary - Not affected.

K. References - None.

L. Publications Affected - None.

M. Abbreviations and Definitions: 1) Abbreviations used in this bulletin are: PR – Ply rating MPH – Miles per hour

2. MATERIAL INFORMATION :

A. Material - Price and Availability: 1) Contact your Goodyear representative fo r information regarding replacement tire availability and credit.

B. Material Necessary for Each Airplane: 1) Up to 4 tires if each is within the serial range above

C. Material Necessary for each Component (Unit) - None

D. Material necessary for each spare - None

E. Re-identified Parts - None

F. Tooling – Price and Availability - None

3. ACCOMPLISHMENT INSTRUCTIONS:

A. Inspect the tires to determine if they are within the designated serial range (see Figure 1).

DATE OF ISSUE: April 19, 2012 SB 2012-32-001



### 2 OF 4The Serial Number is located in the lower sidewall on one side of the tire only.



### Figure 1

B. How to read serial numbers. Serial numbers contain 8 numeric digits: * First digit = the last number of the calendar year * Next three digits = Julian day (sequential day of year) * Fifth digit = plant identifier, Brazil is “7” * Last three digits = processing reference Figure 1 above: Serial Number 0237 7624 is day number 237 of the year 2010, produced in Brazil (0237 7 624).

The affected tires have Serial Numbers 01867xxxx through 02737xxx, where the first four digits must be between 0186 and 0273, inclusive; the fifth digit must be a 7.

C. Tires in the designated serial range must be removed from inventories and removed from the aircraft. If the aircraft is in a location where tires cannot be inspected and/or replaced, accomplish this Bulletin objective on aircraft mounted units at the next available maintenance opportunity, not to ex ceed 5 landings, as long as pre-flight inspections do not reveal a tread bulge (See Figure 2).

WARNING : If a “Tread Bulge” is seen during pre-flight inspection, the tire/wheel assembly must be replaced prior to further flight. (See Figure 2)



### TREAD BULGE

Figure 2

D. If the chosen maintenance facility does not have replacement tires with serial numbers outside the affected range, please contact your regional Goodyear representative for assistance with having tires shipped to the aircraft location.

DATE OF ISSUE: April 19, 2012 SB 2012-32-001



### 3 OF 4DATE OF ISSUE: April 19, 2012 1



### 4 OF 4 E. Disposition and Contact Information: Return affected tires to the Goodyear distributor from which they were purchased. If there are any questions, please contact the appropriate Goodyear Product Support Manager: Region Product Support Manager Phone

Asia Weerasak Rattanachote 66-1-815-0280

Australia/Oceana Peter Monagham 61-3-9338-1533
Europe, Middle East, Africa Cornelis Van Gorp 31-13-462-6513

Latin America Vanderlai Nazareth 55-11-2618-7145

North and Central America Richard McKenna 678-364-8956

Richard McKenna Product Support Manager - North America

Phone Number +1-678-364-8956

FAX Number +1-678-284-6101 rich_mckenna@goodyear.com

SB 2012-32-00