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FR
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2020-11-20
article
Airworthiness Directives; The Boeing Company Airplanes
Part III
Rules and Regulations
D09002ee1bdb335a6
D09002ee1bdb3368a
United States
Department of Transportation
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org
United States Government Agency or Subagency
United States
Federal Aviation Administration
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org
United States Government Agency or Subagency
The FAA is superseding Airworthiness Directive (AD) 2018-23- 51, which applied to all The Boeing Company Model 737-8 and 737-9 (737 MAX) airplanes. AD 2018-23-51 required revising certificate limitations and operating procedures of the Airplane Flight Manual (AFM) to provide the flightcrew with runaway horizontal stabilizer trim procedures to follow under certain conditions. This AD requires installing new flight control computer (FCC) software, revising the existing AFM to incorporate new and revised flightcrew procedures, installing new MAX display system (MDS) software, changing the horizontal stabilizer trim wire routing installations, completing an angle of attack (AOA) sensor system test, and performing an operational readiness flight. This AD also applies to a narrower set of airplanes than the superseded AD, and only allows operation (dispatch) of an airplane with certain inoperative systems if specific, more restrictive, provisions are incorporated into the operator's existing FAA-approved minimum equipment list (MEL). This AD was prompted by the potential for a single erroneously high AOA sensor input received by the flight control system to result in repeated airplane nose-down trim of the horizontal stabilizer. The FAA is issuing this AD to address the unsafe condition on these products.
85 FR 74560
https://www.govinfo.gov/app/details/FR-2020-11-20/2020-25844
2020-25844
fr20no20-9
RIN 2120-AA64
4910-13-P
Docket No. FAA-2020-0686
Product Identifier 2019-NM-035-AD
Amendment 39-21332
AD 2020-24-02
https://www.govinfo.gov/app/details/FR-2020-11-20/2020-25844
https://www.govinfo.gov/content/pkg/FR-2020-11-20/html/2020-25844.htm
https://www.govinfo.gov/content/pkg/FR-2020-11-20/pdf/2020-25844.pdf
Air Transportation
Aircraft
Aviation Safety
Incorporation by Reference
Safety
34 p.
74560
74593
85 FR 74560
Code of Federal Regulations
Title 14 Part 39
14 CFR Part 39
Regulation Identification Number 2120-AA64
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes; Federal Register Vol. 85, Issue
RULE
2020-25844
III
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
2020-11-20
Docket No. FAA-2020-0686
Product Identifier 2019-NM-035-AD
Amendment 39-21332
AD 2020-24-02
4910-13-P
2020-25844
Final rule.
The FAA is superseding Airworthiness Directive (AD) 2018-23- 51, which applied to all The Boeing Company Model 737-8 and 737-9 (737 MAX) airplanes. AD 2018-23-51 required revising certificate limitations and operating procedures of the Airplane Flight Manual (AFM) to provide the flightcrew with runaway horizontal stabilizer trim procedures to follow under certain conditions. This AD requires installing new flight control computer (FCC) software, revising the existing AFM to incorporate new and revised flightcrew procedures, installing new MAX display system (MDS) software, changing the horizontal stabilizer trim wire routing installations, completing an angle of attack (AOA) sensor system test, and performing an operational readiness flight. This AD also applies to a narrower set of airplanes than the superseded AD, and only allows operation (dispatch) of an airplane with certain inoperative systems if specific, more restrictive, provisions are incorporated into the operator's existing FAA-approved minimum equipment list (MEL). This AD was prompted by the potential for a single erroneously high AOA sensor input received by the flight control system to result in repeated airplane nose-down trim of the horizontal stabilizer. The FAA is issuing this AD to address the unsafe condition on these products.
This AD is effective November 20, 2020.
Ian Won, Manager, Seattle ACO Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 206- 231-3500; email: 9-FAA-SACO-AD-Inquiry@faa.gov.
Air Transportation
Aircraft
Aviation Safety
Incorporation by Reference
Safety
Airworthiness Directives:
The Boeing Company Airplanes,
9-ANM-Seattle-ACO-AMOC-Requests@faa.gov
9-FAA-SACO-AD-Inquiry@faa.gov
fedreg.legal@nara.gov
https://data.ntsb.gov/Docket/?NTSBNumber=DCA05RA092
https://fsims.faa.gov/PICResults.aspx?mode=Publication&doctype=FSBReports
https://fsims.faa.gov/PICResults.aspx?mode=Publication&doctype=MMELByModel
https://www.archives.gov/federal-register/cfr/ibr-locations.html
https://www.faa.gov/other_visit/aviation_industry/airline_operators/airline_safety/safo/all_safos/
https://www.faa.gov/regulations_policies/rulemaking/petition/
https://www.icao.int/safety/airnavigation/Pages/nationality.aspx
https://www.myboeingfleet.com
https://www.regulations.gov
Federal Register
Vol. 85, no. 225
Office of the Federal Register, National Archives and Records Administration
2020-11-20
continuing
daily
deposited
born digital
347 p.
Table of Contents:
AE 2.7:
GS 4.107:
AE 2.106:
KF70.A2
https://www.govinfo.gov/app/details/FR-2020-11-20
P0b002ee1a950545e
0097-6326
0042-1219
0364-1406
769-004-00000-9
000582072
f:fr20no20
https://www.govinfo.gov/app/details/FR-2020-11-20
https://www.govinfo.gov/content/pkg/FR-2020-11-20/pdf/FR-2020-11-20.pdf
https://www.govinfo.gov/content/pkg/FR-2020-11-20/xml/FR-2020-11-20.xml
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74593
DGPO
2020-11-20
2023-04-27
FR-2020-11-20
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FR
FR-2020-11-20
85
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