WORLD TRADE
ORGANIZATIONG/TBT/Notif.98.456
17 September 1998
(98-3560)
Committee on Technical Barriers to Trade
NOTIFICATION
The following notification is being circulated in accordance with Article 10.6.
1. Member to Agreement notifying:  UNITED STATES
If applicable, name of local government involved (Articles 3.2 and 7.2):           
2. Agency responsible: Federal Aviation Administration (24)
Agency or authority designated to handle comments regarding the notification shall be
indicated if different from above:
3. Notified under Article 2.9.2 [ ], 2.10.1 [    ], 5.6.2 [X], 5.7.1 [   ], other:           
4. Products covered (HS or CCCN where applicable, otherwise national tariff heading.
ICS numbers may be provided in addition, where applicable):
Rotorcraft (HS Chapter 8803)
5. Title, number of pages and language(s) of the notified document: Harmonization of Critical
Parts Rotorcraft Regulations (3 pages, English)
6. Description of content: This document proposes changes to the type certification
requirements for both normal and transport category rotorcraft.  The changes would amendthe airworthiness standards to define critical parts and to require a critical parts plan.  The
critical parts plan would establish procedures that would require the control of the design,
substantiation, manufacture, maintenance, and modification of critical parts.
7. Objective and rationale, including the nature of urgent problems where applicable: Risk of
failure in service is minimized.
8. Relevant documents:  63 FR 45130, 24 August 1998; 14 CFR Parts 27 and 29.  Will appear
in the Federal Register when adopted.
9. Proposed date of adoption:
Proposed date of entry into force: } To be determined
10. Final date for comments:  23 November 1998
11. Texts available from:  National enquiry point [X] or address, e-mail and telefax number of
the other body:           