G/TBT/N/USA/1764  
17 August 2021  
(21-6247) Page: 1/2 
Committee on Technical Barriers to Trade  Original:  English  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member:  UNITED STATES OF AMERICA   
If applicable, name of local government involved (Article 3.2 and 7.2):   
2. Agency responsible:  Federal Aviation Administration (FAA) [1793]  
Name and address (including telephone and fax numbers , email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated i f different from above:   
Please submit comments to: USA WTO TBT Enquiry Point, Email: usatbtep@nist.gov  
3. Notified under Article 2.9.2 [   ], 2.10.1 [X], 5.6.2 [   ], 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):  
Helicopters; Aircraft and space vehicles in general (ICS 49.020)  
5. Title, number of pages and language(s) of the notified document:  Airworthiness 
Directives; Various Restricted Category Helicopters (4 page(s), in English)  
6. Description of content:  Final rule; request for comments - The FAA is adopting a new 
airworthiness directive (AD) for  various restricted category helicopters origi nally 
manufactured by Bell Textron Inc. This AD was prompted by a fatal accident in which an 
outboard main rotor hub strap pin (pin) sheared off during flight, resulting in the main 
rotor blade and the main rotor head detaching from the helicopter. This AD  requires 
removing certain pins from service and prohibits installing those pins on any helicopter. 
The FAA previously sent an emergency AD to all known U.S. owners and operators of 
these restricted category helicopters and is now issuing this AD to addres s the unsafe 
condition on these products.  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Protection of human health or safety  
8. Relevant documents:  86 Federal Register (FR) 40779, 29 July 2021; Title 14 Code of 
Federal Regulations (CFR) Part 39:  
https://www.govinfo.gov/content/pkg/FR -2021-07-29/html/2021 -16222.htm  
https://www.govinfo.gov/content/pkg/FR -2021-07-29/pdf/2021 -16222.pdf  
This final rule; request for comment is identified by Docket Number FAA -2021-0605. The 
Docket Folder is available on Regulations.gov at 
https://www.regulations.gov/docket/FAA -2021-0605/document  and provides access to 
primary documents as well as comments received. Documents are also accessible from 
Regulations.gov  by searching the Docket Number. WTO Members and their stakeholders 
are asked to submit comments to the USA TBT Enquiry Point . Comments received by the 
USA TBT Enquiry Point from WTO Members and their stakeholders will be shared with the G/TBT/N/USA/1764  
 
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  regulator and will also be submitted to the Docket  on Regulations.gov if received within 
the comment period.   
9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  To be determined  
10. Final date for comments:  13 September 2021  
11. Texts available from:  National enquiry point [ ] or address, telephone and fax 
numbers and email and website addresses, if available , of other body:   
https://members.wto.org/crnattachments/2021/TBT/USA/21_5235_00_e.pdf