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Federal Register / Vol. 86, No. 195 / Wednesday, October 13, 2021 / Rules and Regulations FAA20210260; Project Identifier MCAI202001255T.
a Effective Date This airworthiness directive AD is effective November 17, 2021.
b Affected ADs None.
c Applicability This AD applies to the Airbus Canada Limited Partnership type certificate previously held by C Series Aircraft Limited Partnership CSALP; Bombardier, Inc.
airplanes identified in paragraphs c1 and 2 of this AD, certificated in any category.
1 Model BD5001A10 airplanes, having serial number S/N 50001 through 50018
inclusive, and 50020 through 50055
inclusive.
2 Model BD5001A11 airplanes, having S/N 55001 through 55016 inclusive, 55018
through 55068 inclusive, 55070 through 55083 inclusive, 55086 through 55088
inclusive, and 55090.
d Subject Air Transport Association ATA of America Code 53, Fuselage.
e Reason This AD was prompted by a report that following an in-service engine shutdown during taxi, water was found dripping into the forward avionics bay; the water caused a short circuit and tripped a circuit breaker.
The FAA is issuing this AD to address water ingress into the forward avionics bay, which could short circuit the equipment in the bay area and lead to a loss of air data sources and consequent reduced functional capabilities and increase in crew workload, possibly leading to a loss of continued safe flight and landing.
f Compliance Comply with this AD within the compliance times specified, unless already done.

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g Replacement and Modification Within 12 months after the effective date of this AD, replace the forward galley slotted drain covers with solid blanking plates and modify the associated drain tubing to block water, in accordance with paragraph 2, Procedure, of the Accomplishment Instructions of Airbus Canada Limited Partnership Service Bulletin BD500530009, Issue 001, dated July 31, 2020.
h Other FAA AD Provisions The following provisions also apply to this AD:
1 Alternative Methods of Compliance AMOCs: The Manager, New York 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 responsible Flight Standards Office, as appropriate. If sending information directly to the manager of the certification office, send it to ATTN: Program Manager, Continuing Operational Safety, FAA, New
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York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 5162287300; fax 5167945531. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office.
2 Contacting the Manufacturer: For any requirement in this AD to obtain instructions from a manufacturer, the instructions must be accomplished using a method approved by the Manager, New York ACO Branch, FAA; or Transport Canada Civil Aviation TCCA; or Airbus Canada Limited Partnerships TCCA Design Approval Organization DAO. If approved by the DAO, the approval must include the DAOauthorized signature.

DEPARTMENT OF TRANSPORTATION

i Related Information 1 Refer to Mandatory Continuing Airworthiness Information MCAI TCCA AD
CF202030R1, dated December 11, 2020, for related information. This MCAI may be found in the AD docket on the internet at https www.regulations.gov by searching for and locating Docket No. FAA20210260.
2 For more information about this AD, contact Darren Gassetto, Aerospace Engineer, Mechanical Systems and Administrative Services Section, FAA, New York ACO
Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516228
7323; email 9-avs-nyaco-cos@faa.gov.

SUMMARY:

j 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 this AD specifies otherwise.
i Airbus Canada Limited Partnership Service Bulletin BD500530009, Issue 001, dated July 31, 2020.
ii Reserved.
3 For service information identified in this AD, contact Airbus Canada Limited Partnership, 13100 Henri-Fabre Boulevard, Mirabel, Quebec J7N 3C6, Canada; telephone 4504767676; email a220_crc@abc.airbus;
internet https a220world.airbus.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 fr.inspection@nara.gov, or go to:
https www.archives.gov/federal-register/cfr/
ibr-locations.html.
Issued on September 15, 2021.
Ross Landes, Deputy Director for Regulatory Operations, Compliance & Airworthiness Division, Aircraft Certification Service.
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Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210563; Project Identifier MCAI202100282T; Amendment 3921742; AD 20212004
RIN 2120AA64

Airworthiness Directives; Airbus SAS
Airplanes Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:

The FAA is adopting a new airworthiness directive AD for certain Airbus SAS Model A350941 and 1041
airplanes. This AD was prompted by a report that during flight tests, the opening of the ram air outlet flaps was found to cause a disturbance of the air flow around the ram air turbine RAT
when the landing gear L/G is extended. This AD requires revising the existing airplane flight manual AFM
and applicable corresponding operational procedures to provide procedures for all engines failure and L/
G gravity extension related to certain software, and installing Airbus temporary quick change ATQC V3 for the flight warning system FWS
software SW standard STD 6/2.0, as specified in a European Union Aviation Safety Agency EASA AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective November 17, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of November 17, 2021.
ADDRESSES: For material incorporated by reference IBR in this AD, contact EASA, Konrad-Adenauer-Ufer 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.
You may view this 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 at https www.regulations.gov by searching for and locating Docket No.
FAA20210563.
Examining the AD Docket You may examine the AD docket at https www.regulations.gov by
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