Je veux savoir à propos de…

Federal Register / Vol. 86, No. 150 / Monday, August 9, 2021 / Proposed Rules and generator common ground connections on the airframe. The FAA
is proposing this AD to address the unsafe condition on these products.
DATES: The FAA must receive comments on this proposed AD by September 23, 2021.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to https www.regulations.gov. Follow the instructions for submitting comments.
Fax: 202 4932251.
Mail: U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9 a.m. and 5
p.m., Monday through Friday, except Federal holidays.
For service information identified in this NPRM, contact the Civil Aviation Authority of New Zealand, Level 15, Asteron Centre, 55 Featherston Street, Wellington 6011; phone: +64 4 560
9400; fax: +64 4 569 2024; email: info@
caa.govt.nz. You may review this referenced service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 901 Locust, Kansas City, MO 64106. For information on the availability of this material at the FAA, call 816 3294148.
Examining the AD Docket
lotter on DSK11XQN23PROD with PROPOSALS1

You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210213; 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, the MCAI, any comments received, and other information. The street address for Docket Operations is listed above.
FOR FURTHER INFORMATION CONTACT:
Mike Kiesov, Aviation Safety Engineer, FAA, General Aviation & Rotorcraft Section, International Validation Branch, 901 Locust, Room 301, Kansas City, MO 64106; phone: 816 3294144;
fax: 816 3294090; email:
mike.kiesov@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 the ADDRESSES section. Include Docket No. FAA20210213; Project Identifier 2018CE036AD at the
VerDate Sep<11>2014

16:39 Aug 06, 2021

Jkt 253001

beginning of your comments. The FAA
specifically invites comments on the overall regulatory, economic, environmental, and energy aspects of this NPRM. The FAA will consider all comments received by the closing date and may amend this NPRM 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 NPRM.
Confidential Business Information CBI is commercial or financial information that is both customarily and 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 AD.
Submissions containing CBI should be sent to Mike Kiesov, Aviation Safety Engineer, FAA, General Aviation &
Rotorcraft Section, International Validation Branch, 901 Locust, Room 301, Kansas City, MO 64106. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking.
Background The Civil Aviation Authority CAA, which is the aviation authority for New Zealand, has issued DCA/750XL/30, dated July 5, 2018 referred to after this as the MCAI, to address an unsafe condition on Pacific Aerospace Limited Model 750XL airplanes. The MCAI
states:
The ground connections for the individual power sources BATT & GEN battery and generator have been connected at a common ground point on the aircraft. DCA/750XL/30
is issued to mandate the instructions in Pacific Aerospace Mandatory Service Bulletin MSB PACSB/XL/104 issue 1, dated 2 May 2018, or later approved revision to separate the common ground connection on
PO 00000

Frm 00019

Fmt 4702

Sfmt 4702

43447

the airframe for the individual power sources BATT & GEN.

The CAA advises the root cause is a deviation from the approved engineering data. This condition, if not corrected, could lead to the loss of primary and secondary power sources from corrosion of the ground connection or failure of the fastening hardware, which could result in the simultaneous loss of multiple systems. According to the CAA, this condition was observed on the production line and has been corrected for new airplanes in production. The MCAI requires inspecting the battery ground connections and separating the ground connections as necessary. You may examine the MCAI in the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210213.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Pacific Aerospace Mandatory Service Bulletin PACSB/XL/
104, Issue 1, dated May 2, 2018
PACSB/XL/104I1. The service information specifies procedures for inspecting the battery ground connections and separating the ground connections as necessary. 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.
FAAs Determination This product has been approved by the aviation authority of another country, and is approved for operation in the United States. Pursuant to the FAAs bilateral agreement with this State of Design Authority, it has notified the FAA of the unsafe condition described in the MCAI and service information referenced above. The FAA
is issuing this NPRM after determining that the unsafe condition described previously is likely to exist or develop on other products of the same type design.
Proposed AD Requirements This proposed AD would require accomplishing the actions specified in the service information already described.
Costs of Compliance The FAA estimates that this AD, if adopted as proposed, would affect 23
airplanes of U.S. registry. The FAA also estimates that it would take about 1
work-hour per airplane to comply with the grounding connection inspection of
E:FRFM09AUP1.SGM

09AUP1