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Federal Register / Vol. 86, No. 234 / Thursday, December 9, 2021 / Rules and Regulations
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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.
FAA20210783; 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: Rao Edupuganti, Aerospace Engineer, Dynamic Systems Section, Technical Innovation Policy Branch, Policy &
Innovation Division, FAA, 10101
Hillwood Pkwy., Fort Worth, TX 76177;
telephone 817 2225110; email rao.edupuganti@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 certain Bell Textron Canada Limited type certificate previously held by Bell Helicopter Textron Canada Limited Model 505 helicopters. The NPRM published in the Federal Register on September 20, 2021 86 FR
52109. In the NPRM, the FAA proposed to require revising the existing RFM for your helicopter. Incorporating the RFM
revision may be performed by the owner/operator pilot holding at least a private pilot certificate and must be entered into the aircraft records showing compliance with this AD in accordance with 14 CFR 43.9a1 through 4 and 14 CFR 91.417a2v. The record must be maintained as required by 14 CFR
91.417, 121.380, or 135.439. This is an exception to the FAAs standard maintenance regulations.
The NPRM was prompted by Canadian AD CF201908, dated March 5, 2019 Canadian AD CF201908, issued by Transport Canada, which is the aviation authority for Canada, to correct an unsafe condition for Bell Helicopter Textron Canada Limited Model 505 helicopters serial numbers 65011 and subsequent. Transport Canada advises of the need to reduce the altitude limitations for Jet B and JP
4 wide-cut fuels following unsatisfactory performance of the engine at the original higher altitude limitations with these wide-cut fuels.
This condition, if not addressed, could result in low fuel pressure, engine flame-out, or engine power interruption
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a change in any engine performance parameterincluding but not limited to gas generator speed, power turbine speed, main gas temperature, or output torqueoutside its normal limits for the prevailing operating conditions.
Accordingly, Canadian AD CF2019
08 requires revising the RFM to reflect the reduced altitude operating limitations for Jet B and JP4 wide-cut fuels.
Discussion of Final Airworthiness Directive Comments The FAA received no comments on the NPRM or on the determination of the costs.
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 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. Except for minor editorial changes, this AD is adopted as proposed in the NPRM.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Figure 16. Fuel Operating Envelope Sheet 1 of 1 of Bell 505 Rotorcraft Flight Manual BHT
505FM1, Revision 3, dated July 25, 2018, which specifies limitations, normal and emergency procedures, performance data, weight and balance information, and provides a list of approved optional equipment supplements. This revision of the service information includes an updated figure of the fuel operating envelope showing the reduced pressure altitude limitations for Jet B and JP4 fuels.
This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section.
Differences Between This AD and the Transport Canada AD
Canadian AD CF201908 requires updating the RFM to Bell 505 RFM
BHT505FM1 Revision 3 or later revisions approved by Transport Canada, whereas this AD requires revising the Limitations Section of the RFM for your helicopter by replacing the existing Figure 16. with Figure 1
6. Fuel Operating Envelope Sheet 1 of
PO 00000

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1 of Bell 505 RFM BHT505FM1, Revision 3, dated July 25, 2018.
Costs of Compliance The FAA estimates that this AD
affects 73 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 would take about 0.5 workhour for an estimated cost of $43 per helicopter or $3,139 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 products 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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