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Federal Register / Vol. 86, No. 170 / Tuesday, September 7, 2021 / Proposed Rules
Accordingly, EASA AD 20190092
required a one-time visual inspection of the fuel supply hose and depending on the inspection results, removing from service or replacing the affected part.
EASA AD 20190092 also introduced re-installation requirements for a fuel supply hose that is being replaced or reinstalled.
Actions Since the SNPRM Was Issued Since the SNPRM was issued, EASA
issued AD 20210156, dated July 2, 2021 EASA AD 20210156, which supersedes EASA AD 20190092. EASA
advises that Airbus Helicopters has developed an improved fuel supply hose P/N 704A34416101 and modification instructions to install the improved part. Accordingly, EASA AD
20210156 retains the requirements of EASA AD 20190092 and requires replacing the affected part with the improved part. EASA AD 20210156
also allows a terminating action for the inspection requirements once the improved part has been installed according to the installation requirements. Consequently, the FAA is revising the SNPRM to propose requiring installation of the improved part which would provide a terminating action for the previously proposed inspections.
Comments The FAA received no comments on the first SNPRM or on the determination of the cost.

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FAAs Determination These helicopters have been approved by EASA and are approved for operation in the United States. Pursuant to the FAAs bilateral agreement with the European Union, EASA has notified the FAA about the unsafe condition described in its AD. The FAA is proposing this AD after determining the unsafe condition described previously is likely to exist or develop in other helicopters of these same type designs.
Certain changes described above expand the scope of the first SNPRM. As a result, it is necessary to reopen the comment period to provide additional opportunity for the public to comment on this SNPRM.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Airbus Helicopters Alert Service Bulletin No. EC225
71A019, Revision 2, dated May 21, 2021, which specifies procedures for removing the fuel supply hose from the LH power plant, visually inspecting the fuel supply hose for twisting, and depending on inspection results,
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performing an endoscope inspection on the inside of the hose. This service information also specifies procedures required to install the improved fuel supply hose.
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.
Other Related Service Information The FAA also reviewed Airbus Helicopters Alert Service Bulletin No.
EC22571A019, Revision 1, dated February 28, 2019, which also specifies procedures for removing the fuel supply hose, visually inspecting the fuel supply hose for twisting, performing an endoscope inspection on the inside of the hose, and specifies procedures required to install a serviceable fuel supply hose.
Proposed AD Requirements in This SNPRM
For helicopters with a certain partnumbered LH fuel supply hose installed, this proposed AD would require visually inspecting the LH fuel supply hose for twisting, and if needed, borescope inspecting the entire length of the inside of the fuel supply hose for twisting. Depending on the inspection results, this proposed AD would require reinstalling or removing the fuel supply hose from service. Additionally, this proposed AD would prohibit installing a certain part-numbered LH fuel supply hose on any helicopter unless that LH
fuel supply hose is installed by following certain procedures described in the manufacturers service bulletin.
Finally, this proposed AD would require modifying your helicopter by removing from service LH fuel supply hose P/N
704A34416087 and installing the improved LH fuel supply hose P/N
704A34416101. This modification would provide terminating action for the proposed inspection requirements.
Differences Between This SNPRM and EASA AD 20210156
EASA AD 20210156 requires compliance within 110 flight hours or 6
months, whichever occurs first after the effective date of EASA AD 20190092, while this proposed AD would require compliance within 110 hours time-inservice after the effective date of this AD. EASA AD 20210156 requires reporting information to Airbus Helicopters if the LH fuel supply hose is twisted on the inside, while this proposed AD would not. Additionally, EASA AD 20210156 is applicable to all serial-numbered EC225LP helicopters, whereas this proposed AD would apply
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to EC225LP helicopters with a certain LH fuel supply hose installed.
Costs of Compliance The FAA estimates that this AD, if adopted as proposed, would affect 28
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 proposed AD.
Visually inspecting the LH fuel supply hose for twisting would take about 1 work-hour for an estimated cost of $85 per helicopter and $2,380 for the U.S. fleet.
Replacing a LH fuel supply hose would take about 8 work-hours and parts would cost about $2,363 for an estimated replacement cost of $3043 per replacement.
Borescope inspecting the LH fuel supply hose would take about 8 workhours for an estimated cost of $680 per helicopter.
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 The FAA determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would 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, I certify this proposed regulation:
1 Is not a significant regulatory action under Executive Order 12866, 2 Would not affect intrastate aviation in Alaska, and
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