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US-2011-25-12 : Timken Alcor Aerospace Technologies, Inc. First Stage Reduction Sun Gears and/or the Interacting Planetary Gear Sets

Number US-2011-25-12
Issued by United States of America  United States of America
Issue date 2011-12-14
Effective date 2011-12-28
EASA approval number
ATA Chapter 72
Approval Holder
/ Type Designation
  • PRATT & WHITNEY CANADA
    • PT6A-11/15
      • PT6A-15AG
    • PT6A-20
      • PT6A-27
      • PT6A-28
    • PT6A-30
      • PT6A-34
      • PT6A-34AG
      • PT6A-34B
      • PT6A-36
Revision Not applicable
Correction Not applicable
Supersedure None
Publication(s) and related information Timken Alcor Aerospace Technologies, Inc. Alert Service Bulletin No. T-804, Revision B, dated November 7, 2011. For service information identified in this AD, contact Timken Alcor Aerospace Technologies, Inc., 3110 N. Oakland, Mesa, Arizona 85215; phone: (480) 632-1039; Web site: http://www.timken.com/mro.
Remarks As the unsafe condition addressed by this AD is the result of installing (on P&WC PT6A engines) certain parts manufactured by Timken Alcor Aerospace Technologies, Inc. (TAATI), which is a US-based company, and under a Parts Manufacturer Approval (PMA) from the FAA, EASA has decided to adopt this FAA AD under ED Decision 2/2003. Enquiries regarding this AD should be referred to the Safety Information Section, Certification Directorate, EASA. E-mail ADs[@]easa.europa[dot]eu.

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