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Federal Register / Vol. 86, No. 154 / Friday, August 13, 2021 / Proposed Rules 5 For each fan vibration level reported, the fan hub serial number and hours time-inservice for this fan hub.
6 Installation date and service bulletin SB revision level for the installation of the bracket assembly with pad fuel flow meter and hose if installed before the effective date of this AD.
7 Any failures of the bracket assembly with pad fuel flow meter and hose installed in accordance with any SB listed in paragraph h or any prior revision of these SBs.
8 Installation date and SB revision level used for installation of the fuel control screws within the engine fuel control in accordance with Honeywell SB TFE73173
5146
9 Any failures of fuel control screws after compliance with Honeywell SB TFE73173
5146.
h Replacement Within 12 months after the effective date of this AD or 750 hours time-in-service after the effective date of this AD, whichever occurs first, replace the engine fuel flow meter bracket in accordance with the Accomplishment Instructions, paragraphs 3.A through 3.C, of the following Bombardier SB applicable to your airplane model.
1 Bombardier Learjet 40 SB 407301, Revision 1, dated January 9, 2017.
2 Bombardier Learjet 45 SB 45732
Revision 1, dated January 9, 2017.
3 Bombardier Learjet 70 SB 707301
Revision 1, dated January 9, 2017.
4 Bombardier Learjet 75 SB 757301, Revision 2, dated January 9, 2017.
i Credit for Previous Actions 1 This paragraph provides credit for the actions required by paragraph h of this AD, if those actions were performed before the effective date of this AD using Bombardier Learjet 40 SB 407301, Basic Issue, Bombardier Learjet 45 Service Bulletin SB
45732, Basic Issue, Bombardier Learjet 70
SB 707301, Basic Issue, or Bombardier Learjet 75 SB 757301, Basic Issue, all dated October 3, 2016, or Bombardier Learjet 75 SB
757301, Revision 1, dated October 10, 2016.
2 To take credit for any previous action, you must comply with paragraph g of this AD within 60 days after the effective date of this AD.

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j Alternative Methods of Compliance AMOCs 1 The Manager, Wichita ACO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in Related Information.
2 Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/
certificate holding district office.

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k Related Information 1 For more information about this AD, contact James Galstad, Aviation Safety Engineer, Wichita ACO Branch, FAA, 1801 S
Airport Road, Wichita, KS 67209; phone:
316 9464135; email: james.galstad@
faa.gov or Wichita-COS@faa.gov; or Thomas Teplik, Aviation Safety Engineer, Wichita ACO Branch, FAA, 1801 S Airport Road, Wichita, KS 67209; phone: 316 9464196;
email: thomas.teplik@faa.gov.
2 For service information identified in this AD, contact Learjet Inc., One Learjet Way, Wichita, KS, 67209; phone: 316 946
2000; email: ac.ict@aero.bombardier.com;
website: https
businessaircraft.bombardier.com/en/aircraft/
Learjet.html. You may view 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.
Issued on August 5, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202117044 Filed 81221; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210663; Project Identifier MCAI202001618T
RIN 2120AA64

Airworthiness Directives; Airbus SAS
Airplanes Federal Aviation Administration FAA, DOT.
ACTION: Notice of proposed rulemaking NPRM.
AGENCY:

SUMMARY: The FAA proposes to supersede Airworthiness Directive AD
20161712, which applies to all Airbus SAS Model A318 series airplanes;
Model A319111, 112, 113, 114, 115, 131, 132, and 133 airplanes;
Model A320211, 212, 214, 231, 232, and 233 airplanes; and Model A321111, 112, 131, 211, 212, 213, 231, and 232 airplanes. AD
20161712 requires inspecting certain trimmable horizontal stabilizer actuators THSAs to determine the number of total flight cycles the THSA has accumulated, and replacing the THSA if necessary. Since the FAA issued AD
20161712, the FAA has determined that new or more restrictive airworthiness limitations are necessary.
This proposed AD would require revising the existing maintenance or inspection program, as applicable, to
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44663

incorporate new or more restrictive airworthiness limitations, as specified in a European Union Aviation Safety Agency EASA AD, which is proposed for incorporation by reference. 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 27, 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: 2024932251.
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 EASA material that will be incorporated by reference IBR in this AD, contact EASA, Konrad-AdenauerUfer 3, 50668 Cologne, Germany;
telephone +49 221 8999 000; email ADs@easa.europa.eu; internet www.easa.europa.eu. You may find this IBR material on the EASA website at https ad.easa.europa.eu. For Airbus service information identified in this proposed AD, contact Airbus SAS, Airworthiness OfficeEIAS, RondPoint Emile Dewoitine No: 2, 31700
Blagnac Cedex, France; telephone +33 5
61 93 36 96; fax +33 5 61 93 44 51; email account.airworth-eas@airbus.com;
internet https www.airbus.com. You may view this IBR material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 2062313195.
It is also available in the AD docket on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0663. For the UTC Aerospace Systems material identified in this proposed AD
that will not be incorporated by reference, contact Collins Aerospace, Product Support Department 13, Avenue de LEguilletteSaint-Ouen LAumone, Boite Postale 7186 95056
Cergy Pontoise Cedex, France;
telephone 18778087575; email crc@
collins.com; internet https
www.collinsaerospace.com/support.
Examining the AD Docket You may examine the AD docket on the internet at https

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