Voglio sapere a riguardo di…

Federal Register / Vol. 86, No. 46 / Thursday, March 11, 2021 / Proposed Rules email ADs@easa.europa.eu; internet www.easa.europa.eu. You may find this material on the EASA website at https
ad.easa.europa.eu. You may view this material 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 8172225110. It is also available in the AD docket on the internet at https www.regulations.gov by searching for and locating Docket No.
FAA20201171.

khammond on DSKJM1Z7X2PROD with PROPOSALS

Examining the AD Docket You may examine the AD docket on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2020
1171; 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 NPRM, any comments received, and other information. The street address for Docket Operations is listed above.
Comments will be available in the AD
docket shortly after receipt.
FOR FURTHER INFORMATION CONTACT:
Kathleen Arrigotti, Aviation Safety Engineer, Large Aircraft Section, International Validation Branch, FAA, 2200 South 216th St., Des Moines, WA
98198; phone and fax: 2062313218;
email: kathleen.arrigotti@faa.gov.
SUPPLEMENTARY INFORMATION:
Comments Invited The FAA invites you to send any written relevant data, views, or arguments about this proposal. Send your comments to an address listed under ADDRESSES. Include Docket No.
FAA20201171; Product Identifier 2017SW124AD at the beginning of your comments. The most helpful comments reference a specific portion of the proposal, explain the reason for any recommended change, and include supporting data. The FAA will consider all comments received by the closing date and may amend this proposal because of those comments.
Except for Confidential Business Information CBI as described in the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to https
www.regulations.gov, including any personal information you provide. The agency will also post a report summarizing each substantive verbal contact received about this proposal.
Confidential Business Information CBI is commercial or financial information that is both customarily and
VerDate Sep<11>2014

16:33 Mar 10, 2021

Jkt 253001

actually treated as private by its owner.
Under the Freedom of Information Act FOIA 5 U.S.C. 552, CBI is exempt from public disclosure. If your comments responsive to this NPRM
contain commercial or financial information that is customarily treated as private, that you actually treat as private, and that is relevant or responsive to this NPRM, it is important that you clearly designate the submitted comments as CBI. Please mark each page of your submission containing CBI
as PROPIN. The FAA will treat such marked submissions as confidential under the FOIA, and they will not be placed in the public docket of this NPRM. Submissions containing CBI
should be sent to Kathleen Arrigotti, Aviation Safety Engineer, Large Aircraft Section, International Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 206
2313218; email: kathleen.arrigotti@
faa.gov. Any commentary that the FAA
receives that is not specifically designated as CBI will be placed in the public docket for this rulemaking.
Discussion The EASA now European Union Aviation Safety Agency, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 20170177, dated September 14, 2017 EASA AD 20170177 also referred to as the Mandatory Continuing Airworthiness Information, or the MCAI, to correct an unsafe condition for all Airbus Helicopters Deutschland GmbH Model MBBBK 117 C2
helicopters, except the Model C2e variant, and all Model MBBBK 117 D
2 helicopters.
Airbus Helicopters Deutschland GmbH MBBBK 117 C2e variant helicopters are not a unique model on the U.S. type certificate but are considered a configuration of the Model MBBBK117 C2. The U.S. type certificate data sheet explains that the FAA determined that the type design changes involved did not rise to the level that required an FAA amended type certificate. However, the FAA does recognize that helicopters with these type design changes exist, therefore the designation Model MBBBK117 C2e is used, starting from Serial Number 9601. The Model MBBBK117 C2e is a visual flight rules only configuration of the Model MBBBK117 C2 utilizing a Garmin 500H flight display system.
This proposed AD was prompted by a determination that a life limit for the adapter FWD of the outboard load system, repetitive inspections of other components of that system, and for certain helicopters, a modification of the
PO 00000

Frm 00004

Fmt 4702

Sfmt 4702

13831

outboard load system, are necessary to address the unsafe condition. The FAA
is proposing this AD to address detachment of an external load or person from the helicopter hoist, resulting in personal injury, or injury to persons on the ground. See the MCAI
for additional background information.
Related Service Information Under 1
CFR Part 51
EASA AD 20170177 describes procedures for modification of the outboard load system for certain Model MBBBK 117 C2 helicopters, repetitive inspections of the outboard load system and its components for any defect including cracking, damage, corrosion, and incorrect installation and corrective actions, and implementation of a new life limit for the FWD adapter i.e., repetitive replacements. The corrective actions include replacement of any defective component with a serviceable part.
This material 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.
FAAs Determination and Requirements of This Proposed AD
This product has been approved by the aviation authority of another country, and is approved for operation in the United States. Pursuant to the bilateral agreement with the State of Design Authority, the FAA has been notified of the unsafe condition described in the MCAI referenced above. The FAA is proposing this AD
after evaluating all the relevant information and determining the unsafe condition described previously is likely to exist or develop in other products of the same type design.
Proposed AD Requirements This proposed AD would require accomplishing the actions specified in EASA AD 20170177, described previously, as incorporated by reference, except for any differences identified as exceptions in the regulatory text of this proposed AD.
Explanation of Required Compliance Information In the FAAs ongoing efforts to improve the efficiency of the AD
process, the FAA initially worked with Airbus and EASA to develop a process to use certain EASA ADs as the primary source of information for compliance with requirements for corresponding FAA ADs. The FAA has since coordinated with other manufacturers and civil aviation authorities CAAs to
E:FRFM11MRP1.SGM

11MRP1