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Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations
c Applicability This AD applies to The Boeing Company Model 737600, 700, 700C, 800, 900, and 900ER series airplanes, certificated in any category, line numbers 1 through 1934
inclusive.
d Subject Air Transport Association ATA of America Code 28, Fuel.
e Unsafe Condition This AD was prompted by a report that sealant was not applied to the side of body SOB slot inside of a pressurized boundary, which could lead to inconsistent application of the required secondary fuel barrier sealant vapor barrier. The FAA is issuing this AD
to address possible ignition of flammable fluid vapors, fire, or explosion, or fuel vapor inhalation by passengers and crew.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g SOB Slot Inspection and Related Investigative and Corrective Actions Within 9 months after the effective date of this AD: Do a general visual inspection for insufficient sealant in the SOB slot, and do all applicable related investigative and corrective actions, in accordance with Boeing Multi Operator Message MOMMOM20
004901BR4, dated September 28, 2020. Do all related investigative and corrective actions before further flight, except as provided in paragraph h of this AD.
h Deferred Repair Repair of insufficient sealant as required by paragraph g of this AD may be deferred for 10 days provided there is no fuel present in the center tank as specified in the procedures in item 2802A of the operators existing FAA-approved minimum equipment list, and there is no fuel contamination in the air distribution mix bay ADMB.
i Reporting Provisions Although the service information referenced in Boeing Multi Operator Message MOMMOM20004901BR4, dated September 28, 2020, specifies to report inspection findings, this AD does not require any report.
j Credit for Previous Actions This paragraph provides credit for the actions specified in paragraphs g, h, and i of this AD, if those actions were performed before the effective date of this AD using the service information identified in paragraph j1, 2, or 3 of this AD.
1 Boeing Multi Operator Message MOM
MOM20004901BR1, dated January 29, 2020.
2 Boeing Multi Operator Message MOM
MOM20004901BR2, dated August 4, 2020.
3 Boeing Multi Operator Message MOM
MOM20004901BR3, dated September 23, 2020.

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k Alternative Methods of Compliance AMOCs 1 The Manager, Seattle 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 paragraph l1 of this AD. Information may be emailed to: 9ANM-Seattle-ACO-AMOC-Requests@faa.gov.
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.
3 An AMOC that provides an acceptable level of safety may be used for any repair, modification, or alteration required by this AD if it is approved by The Boeing Company Organization Designation Authorization ODA that has been authorized by the Manager, Seattle ACO Branch, FAA, to make those findings. To be approved, the repair method, modification deviation, or alteration deviation must meet the certification basis of the airplane, and the approval must specifically refer to this AD.
l Related Information 1 For more information about this AD, contact James Laubaugh, Aerospace Engineer, Propulsion Section, FAA, Seattle ACO
Branch, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 2062313622;
email: james.laubaugh@faa.gov.
2 Service information identified in this AD that is not incorporated by reference is available at the addresses specified in paragraphs m3 and 4 of this AD.
m Material Incorporated by Reference 1 The Director of the Federal Register approved the incorporation by reference IBR of the service information listed in this paragraph under 5 U.S.C. 552a and 1 CFR
part 51.
2 You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise.
i Boeing Multi Operator Message MOM
MOM20004901BR4, dated September 28, 2020.
ii Reserved 3 For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Contractual & Data Services C&DS, 2600 Westminster Blvd., MC 110SK57, Seal Beach, CA 907405600;
telephone 5627971717; internet https
www.myboeingfleet.com.
4 You may view this service information 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.
5 You may view this service information that is incorporated by reference at the National Archives and Records Administration NARA. For information on the availability of this material at NARA, email fedreg.legal@nara.gov, or go to: https

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www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued on January 14, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202103592 Filed 22221; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20200467; Product Identifier 2020NM056AD; Amendment 3921399; AD 20210216
RIN 2120AA64

Airworthiness Directives; The Boeing Company Airplanes Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:

The FAA is adopting a new airworthiness directive AD for all The Boeing Company Model 717200
airplanes. This AD was prompted by a report that during takeoff, both the captains and first officers airspeed indications froze at 80 knots. This AD
requires modifying the air data heat ADH system to display the proper airspeed indications, testing, and any applicable corrective actions. The FAA
is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective March 30, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of March 30, 2021.
ADDRESSES: For service information identified in this final rule, contact Boeing Commercial Airplanes, Attention: Contractual & Data Services C&DS, 2600 Westminster Blvd., MC
110SK57, Seal Beach, CA 907405600;
telephone 5627971717; internet https www.myboeingfleet.com. You may view this service information 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 on the internet at https www.regulations.gov by searching for and locating Docket No.
FAA20200467.
SUMMARY:

Examining the AD Docket You may examine the AD docket on the internet at https

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