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US-2015-20-12 : Main Rotor Gearbox - Main Rotor Shaft (MRS) - Inspection / Replacement

Number US-2015-20-12
Issued by United States of America  United States of America
Issue date 2015-11-05
Effective date 2015-11-24
EASA approval number
ATA Chapter 63
Approval Holder
/ Type Designation
  • SIKORSKY
    • S-61
      • S-61A
      • S-61D
      • S-61E
      • S-61L
      • S-61N
      • S-61NM
      • S-61R
      • S-61V
Revision Not applicable
Correction Not applicable
Supersedure This AD supersedes FAA AD 98-26-02, dated December 16, 1998.
Publication(s) and related information Sikorsky ASB No. 61B35-69, dated April 19, 2004. For Sikorsky service information identified in this AD, contact Sikorsky Aircraft Corporation, Attn: Manager, Commercial Technical Support, mailstop s581a, 6900 Main Street, Stratford, Connecticut, telephone (203) 383-4866, email tsslibrary[at]sikorsky.com, or at http://www.sikorsky.com.
Remarks At the moment of adoption of this AD, as per currently available information, only the models S-61N and S-61NM have been validated in Europe. Comments regarding this AD should be referred to the Safety Information Section, EASA; E-mail: ADs [at] easa.europa [dot] eu.

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