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Federal Register / Vol. 86, No. 170 / Tuesday, September 7, 2021 / Rules and Regulations
Manual RFM for your helicopter. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective October 12, 2021.
ADDRESSES: For service information identified in this final rule, contact Bell Textron Canada Limited, 12,800 Rue de lAvenir, Mirabel, Quebec J7J1R4, Canada; telephone 450 4372862 or 800 3638023; fax 450 4330272; or at https www.bellcustomer.com. You may view the referenced service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817 2225110.

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Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210497; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, the Transport Canada AD, any comments received, and other information. The street address for Docket Operations is U.S. Department of Transportation, Docket Operations, M
30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT:
Mitch Soth, Flight Test Engineer, Southwest Section, Flight Test Branch, Compliance & Airworthiness Division, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817 222
5110; email mitch.soth@faa.gov.
SUPPLEMENTARY INFORMATION:
Background The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to Bell Textron Canada Limited Model 429 helicopters, serial numbers 57001 and subsequent. The NPRM
published in the Federal Register on July 7, 2021 86 FR 35692. In the NPRM, the FAA proposed to require revising the existing RFM for your helicopter by adding procedures in Section 2, Normal Procedures, under 2
4. INTERIOR AND PRESTART CHECK, 25. ENGINE START, and 28.
TAKEOFF; Section 3, Emergency and Malfunction Procedures, under 39.
AUTOMATIC FLIGHT CONTROL
SYSTEM; and Section 4, Performance, under 42. POWER ASSURANCE
CHECK. The owner/operator pilot may revise the existing RFM for your helicopter, and the owner/operator must
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enter compliance with the applicable paragraphs of the AD into the aircraft records in accordance with 43.9a1
through 4 and 91.417a2v. This is an exception to the FAAs standard maintenance regulations.
The NPRM was prompted by Transport Canada Emergency AD CF
201916, dated May 6, 2019 Transport Canada AD CF201916, issued by Transport Canada, which is the aviation authority for Canada to correct an unsafe condition for Bell Helicopter Textron Canada Limited now Bell Textron Canada Limited Model 429
helicopters, serial numbers 57001 and subsequent. Transport Canada advises of three reports of unexpected forces or uncommanded inputs to the directional yaw control system during ground operations. Investigation revealed that a yaw trim runaway can occur while the automatic pedal trim function is operating. This condition, if not addressed, could result in loss of control of the helicopter. Accordingly, Transport Canada AD CF201916
requires revising Bell RFM BHT429
FM1 by incorporating revision 14, dated April 18, 2019.
Discussion of Final Airworthiness Directive Comments The FAA received one comment from an individual who supported the NPRM
without change.
Conclusion These helicopters have been approved by the aviation authority of Canada and are approved for operation in the United States. Pursuant to the FAAs bilateral agreement with Canada, Transport Canada, its technical representative, has notified the FAA of the unsafe condition described in its AD. The FAA reviewed the relevant data, considered the comment received, and determined that air safety requires adopting this AD as proposed. Accordingly, the FAA is issuing this AD to address the unsafe condition on these helicopters.
Related Service Information The FAA reviewed Section 2Normal Procedures, Section 3Emergency and Malfunction Procedures, and Section 4Performance, of Bell RFM BHT429
FM1, Revision 14, dated April 18, 2019. This revision of the service information adds a procedure to reduce the risk of trim runaway during start sequence, cautions to reduce the risk of uncommanded control movement during engine start and takeoff and resetting force trim detent instructions during engine start and takeoff, and an emergency procedure to assist flight
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crew to recognize trim runaway and response instructions.
Costs of Compliance The FAA estimates that this AD
affects 120 helicopters of U.S. Registry.
Labor rates are estimated at $85 per work-hour. Based on these numbers, the FAA estimates the following costs to comply with this AD.
Revising the existing RFM for your helicopter takes about 0.50 work-hour for an estimated cost of $43 per helicopter and $5,160 for the U.S. fleet.
Authority for This Rulemaking Title 49 of the United States Code specifies the FAAs authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII:
Aviation Programs, describes in more detail the scope of the Agencys authority.
The FAA is issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: General requirements. Under that section, Congress charges the FAA
with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce.
This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on helicopters identified in this rulemaking action.
Regulatory Findings This AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government.
For the reasons discussed above, I
certify that this AD:
1 Is not a significant regulatory action under Executive Order 12866, 2 Will not affect intrastate aviation in Alaska, and 3 Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.
The Amendment Accordingly, under the authority delegated to me by the Administrator,
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