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Federal Register / Vol. 86, No. 52 / Friday, March 19, 2021 / Rules and Regulations
Administrator, the following special conditions are issued as part of the type certification basis for Boeing Model 7878 airplanes, as modified by Lufthansa Technik.
For large glass items a single item, or a collective group of glass items, that weigh 4 kg or more in mass installed in passenger-occupied rooms or areas during taxi, takeoff, and landing, or installed in rooms or areas that occupants must enter or pass through to access any emergency exit, the glass installations on the Lufthansa Model 7878 airplane must meet the following conditions:
1. Material FragmentationThe applicant must use tempered or otherwise treated glass to ensure that, when fractured, the glass breaks into small pieces with relatively dull edges.
The glass component installation must retain all glass fragments to minimize the danger from flying glass shards or pieces. The applicant must demonstrate this characteristic by impact and puncture testing, and testing to failure.
The applicant may conduct this test with or without any glass coating that may be used in the design.
2. StrengthIn addition to meeting the load requirements for all flight and landing loads, including any of the applicable emergency-landing conditions in subparts C & D of 14 CFR
part 25, the glass components that are located such that they are not protected from contact with cabin occupants must not fail due to abusive loading, such as impact from occupants stumbling into, leaning against, sitting on, or performing other intentional or unintentional forceful contact with the glass component. The applicant must assess the effect of design details such as geometric discontinuities or surface finish, including but not limited to embossing and etching.
3. RetentionThe glass component, as installed in the airplane, must not come free of its restraint or mounting system in the event of an emergency landing, considering both the directional loading and resulting rebound conditions. The applicant must assess the effect of design details such as geometric discontinuities or surface finish, including but not limited to embossing and etching.
4. Instruction for Continued AirworthinessThe instructions for continued airworthiness must reflect the method used to fasten the panel to the cabin interior, and must ensure the reliability of the methods used e.g., life limit of adhesives, or clamp connection. The applicant must define any inspection methods and intervals based upon adhesion data from the
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manufacturer of the adhesive, or upon actual adhesion-test data, if necessary.
Issued in Des Moines, Washington, on March 11, 2021.
Patrick Mullen, Manager, Technical Innovation Policy Branch, Policy and Innovation Division, Aircraft Certification Service.
FR Doc. 202105447 Filed 31821; 8:45 am BILLING CODE 491013P

DEPARTMENT OF HOMELAND
SECURITY
U.S. Customs and Border Protection 19 CFR Chapter I
Notification of Temporary Travel Restrictions Applicable to Land Ports of Entry and Ferries Service Between the United States and Canada Office of the Secretary, U.S.
Department of Homeland Security; U.S.
Customs and Border Protection, U.S.
Department of Homeland Security.
ACTION: Notification of continuation of temporary travel restrictions.
AGENCY:

This document announces the decision of the Secretary of Homeland Security Secretary to continue to temporarily limit the travel of individuals from Canada into the United States at land ports of entry along the United States-Canada border. Such travel will be limited to essential travel, as further defined in this document.
DATES: These restrictions go into effect at 12 a.m. Eastern Daylight Time EDT
on March 22, 2021 and will remain in effect until 11:59 p.m. EDT on April 21, 2021.
FOR FURTHER INFORMATION CONTACT:
Stephanie Watson, Office of Field Operations Coronavirus Coordination Cell, U.S. Customs and Border Protection CBP at 2023250840.
SUPPLEMENTARY INFORMATION:
SUMMARY:

Background On March 24, 2020, DHS published notice of its decision to temporarily limit the travel of individuals from Canada into the United States at land ports of entry along the United StatesCanada border to essential travel, as further defined in that document.1 The document described the developing 1 85 FR 16548 Mar. 24, 2020. That same day, DHS also published notice of its decision to temporarily limit the travel of individuals from Mexico into the United States at land ports of entry along the United States-Mexico border to essential travel, as further defined in that document. 85 FR
16547 Mar. 24, 2020.

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circumstances regarding the COVID19
pandemic and stated that, given the outbreak and continued transmission and spread of the virus associated with COVID19 within the United States and globally, DHS had determined that the risk of continued transmission and spread of the virus associated with COVID19 between the United States and Canada posed a specific threat to human life or national interests. DHS
later published a series of notifications continuing such limitations on travel until 11:59 p.m. EDT on March 21, 2021.2
DHS continues to monitor and respond to the COVID19 pandemic. As of the week of March 7, 2021, there have been over 116.1 million confirmed cases globally, with over 2.5 million confirmed deaths.3 There have been over 29.2 million confirmed and probable cases within the United States,4 over 881,000 confirmed cases in Canada,5 and over 2.1 million confirmed cases in Mexico.6
Notice of Action Given the outbreak and continued transmission and spread of COVID19
within the United States and globally, the Secretary has determined that the risk of continued transmission and spread of the virus associated with COVID19 between the United States and Canada poses an ongoing specific threat to human life or national interests.
U.S. and Canadian officials have mutually determined that non-essential travel between the United States and Canada poses additional risk of transmission and spread of the virus associated with COVID19 and places 2 See 86 FR 10815 Feb. 23, 2021; 86 FR 4969
Jan. 19, 2021; 85 FR 83432 Dec. 22, 2020; 85 FR
74603 Nov. 23, 2020; 85 FR 67276 Oct. 22, 2020;
85 FR 59670 Sept. 23, 2020; 85 FR 51634 Aug.
21, 2020; 85 FR 44185 July 22, 2020; 85 FR 37744
June 24, 2020; 85 FR 31050 May 22, 2020; 85 FR
22352 Apr. 22, 2020. DHS also published parallel notifications of its decisions to continue temporarily limiting the travel of individuals from Mexico into the United States at land ports of entry along the United States-Mexico border to essential travel. See 86 FR 10816 Feb. 23, 2021; 86 FR
4969 Jan. 19, 2021; 85 FR 83433 Dec. 22, 2020;
85 FR 74604 Nov. 23, 2020; 85 FR 67275 Oct. 22, 2020; 85 FR 59669 Sept. 23, 2020; 85 FR 51633
Aug. 21, 2020; 85 FR 44183 July 22, 2020; 85 FR
37745 June 24, 2020; 85 FR 31057 May 22, 2020;
85 FR 22353 Apr. 22, 2020.
3 WHO, Coronavirus disease 2019 COVID19
Weekly Epidemiological Update Mar. 7, 2021, available at https www.who.int/publications/m/
item/weekly-epidemiological-update---10-march2021.
4 CDC, COVID Data Tracker accessed Mar. 15, 2021, https covid.cdc.gov/covid-data-tracker/
cases_casesper100klast7days.
5 WHO, COVID19 Weekly Epidemiological Update Mar. 7, 2021.
6 Id.

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