Safety Publications Tool
2021-0170 : Tail Rotor – Double Bearing – Inspection / Replacement
EASA approval number
EASA General Aviation & VTOL Department
/ Type Designation
SA/AS 365 / EC 155
AS 365 N2
AS 365 N3
EC 155 B
EC 155 B1
SA 365 N1
This AD supersedes EASA AD 2020-0078 dated 31 March 2020.
Publication(s) and related information
AH AS365 Emergency ASB 01.00.71 original issue dated 24 October 2019, or Revision 1 dated 11 December 2019, or Revision 2 dated 25 March 2020, or Revision 3 dated 14 June 2021. AH EC155 Emergency ASB 04A016 original issue dated 24 October 2019, or Revision 1 dated 11 December 2019, or Revision 2 dated 25 March 2020, or Revision 3 dated 14 June 2021. The use of later approved revisions of the above-mentioned documents is acceptable for compliance with the requirements of this AD.
1. If requested and appropriately substantiated, EASA can approve Alternative Methods of Compliance for this AD. 2. Based on the required actions and the compliance time, EASA have decided to issue a Final AD with Request for Comments, postponing the public consultation process until after publication. 3. Enquiries regarding this AD should be referred to the EASA Safety Information Section, Certification Directorate. E-mail: ADs[at]easa.europa.eu. 4. Information about any failures, malfunctions, defects or other occurrences, which may be similar to the unsafe condition addressed by this AD, and which may occur, or have occurred on a product, part or appliance not affected by this AD, can be reported to the EU aviation safety reporting system. This may include reporting on the same or similar components, other than those covered by the design to which this AD applies, if the same unsafe condition can exist or may develop on an aircraft with those components installed. Such components may be installed under an FAA Parts Manufacturer Approval (PMA), Supplemental Type Certificate (STC) or other modification.
EASA_AD_2021_0170.pdf (215 kb)
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