DGCA/NEW MISC/147




 FAA AD 2012-17-01 Goodyear Aviation Tires: 

 (a) Effective Date :This airworthiness directive (AD) becomes effective September 13, 2012 

 (c) Applicability :This AD applies to the following new Goodyear Aviation Tires (retreads are not affected by this AD), installed on various transport category airplanes, including but not limited to Bombardier, Inc. Model CL-600-2B19 airplanes: 

  (1) New tire part number (P/N) 299K63-1 with the following specifications: 

   (i) Tire size: H29x9.0-15; 

   (ii) Ply rating: 16PR; and 

   (iii) Speed rating: 210 miles per hour. 

   (2) Serial numbers (S/N) 01867xxx through 02737xxx with the following specifications: 

 (i) The 5th digit of the serial number must be a ``7''; and 

 (ii) ``XXX'' can be any combination of three single digit numbers. 

  (d) Subject : Air Transport Association of America (ATA) Code 32: Landing gear. 
(e) Reason :This AD was prompted by mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as tire tread separations and tread-area bulges on the main landing gear tires due to low adhesion in the tread should area. We are issuing this AD to prevent failure of the main landing gear tires during takeoff or landing, which could cause damage to the airplane structure, flaps, engine, and wheel well and result in reduced controllability of the airplane. 
(f) Actions and Compliance : Unless already done, do the following actions in accordance with Goodyear Aviation Service Bulletin 2012-32-001, dated April 19, 2012. 

  (1) Within the next 5 flight cycles (landings) after September 13, 2012 (the effective date of this AD), inspect the main landing gear tires, P/N 299K63-1, to determine if an affected S/N tire, as specified in paragraph (c) of this AD, is installed. A review of the airplane maintenance records is acceptable in lieu of this inspection if the P/N and S/N of the tires installed can be positively determined from that review. Operators that do not maintain landing records can determine the number of landings by dividing the number of airplane hours time-in-service (TIS) by two. 
 (2) Before further flight after the inspection required in paragraph (f)(1) of this AD, replace any tire that has an affected serial number. 
 (3) As of September 13, 2012 (the effective date of this AD), do not install any main landing gear tire, P/N 299K63-1, that has an affected serial number specified in paragraph (c)(2) of this AD. 

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