DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0268; Project Identifier MCAI-2020-01382-T;
Amendment 39-21505; AD 2021-08-11]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes.
This AD was prompted by reports of one or both roll control input
modules (RCIMs) being incorrectly installed. This AD requires revising
the existing maintenance or inspection program, as applicable, to
incorporate certain aircraft maintenance manual (AMM) tasks. The FAA is
issuing this AD to address the unsafe condition on these products.

DATES: This AD becomes effective April 27, 2021.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of April 27,
2021.
The FAA must receive comments on this AD by May 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: 202-493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 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 service information identified in this final rule, contact
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec
H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-7401; email
ac.yul@aero.bombardier.com; internet https://www.bombardier.com. You
may view this referenced 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 206-231-3195. It is also available at https://www.regulations.gov
by searching for and locating Docket No. FAA-2021-0268.

Examining the AD Docket

You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-0268; or in person at
the Docket Operations office between 9 a.m. and 5 p.m., Monday through
Friday, except Federal holidays. The AD docket contains this AD, any
comments received, and other information. The street address for the
Docket Operations office is listed above.

FOR FURTHER INFORMATION 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 516-228-7323; fax 516-794-5531; email 9-avs-nyaco-cos@faa.gov.

SUPPLEMENTARY INFORMATION:

Background

Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued TCCA AD CF-2020-35, dated October 7,
2020 (referred to after this as the Mandatory Continuing Airworthiness
Information, or the MCAI), to correct an unsafe condition for certain
Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes. You may
examine the MCAI at https://www.regulations.gov by searching for and
locating Docket No. FAA-2021-0268.
This AD was prompted by reports of one or both RCIMs being
incorrectly installed. An investigation determined that it is
physically possible for an RCIM to be installed and zeroed at 180
degrees from its intended orientation. One in-service report involved a
near-accident with damage incurred on the airplane at landing. The FAA
is issuing this AD to prevent incorrect installation of one or both
RCIMs, which results in a misrigging condition, causing the multi-
function spoilers to deploy opposite to the roll command, and could
lead to loss of control of the airplane. See the MCAI for additional
background information.

Related Service Information Under 1 CFR Part 51

Bombardier has issued the following service information. This
service information describes procedures for properly installing and
maintaining the RCIMs. These documents are distinct since they apply to
different airplane configurations.
Tasks 27-11-13-400-801, ``Installation of the Roll Control
Input-Module'' (including Figure 401, ``Roll Control Input-Module--
Removal/Installation''), 27-11-13-720-801, ``Functional Test of the
Roll Control Input-Module,'' and 27-11-13-820-801, ``Adjustment of the
Roll Control Input-Module,'' of Subject 27-11-13, ``Roll Control Input-
Module,'' of Chapter 27, ``Flight Controls,'' in Part II of the
Bombardier Global Express Aircraft Maintenance Manual, Publication No.
BD-700 AMM, Revision 89, dated February 22, 2021. (For obtaining the
tasks for Bombardier Global Express Aircraft Maintenance Manual,
Publication No. BD-700 AMM, use Document Identification No. GL 700
AMM.)
Tasks 27-11-13-400-801, ``Installation of the Roll Control
Input-Module'' (including Figure 401, ``Roll Control Input-Module--
Removal/Installation''), 27-11-13-720-801, ``Functional Test of the
Roll Control Input-Module,'' and 27-11-13-820-801, ``Adjustment of the
Roll Control Input-Module,'' of Subject 27-11-13, ``Roll Control Input-
Module,'' of Chapter 27, ``Flight Controls,'' in Part II of the
Bombardier Global 5000 Aircraft Maintenance Manual, Publication No. BD-
700 AMM, Revision 70, dated February 22, 2021. (For obtaining the tasks
for Bombardier Global 5000 Aircraft Maintenance Manual, Publication No.
BD-700 AMM, use Document Identification No. GL 5000 AMM.)
Tasks 27-11-13-400-801, ``Installation of the Roll Control
Input-Module'' (including Figure 401, ``Roll Control Input-Module--
Removal/Installation''), 27-11-13-720-801, ``Functional Test of the
Roll Control Input-Module,'' and 27-11-13-820-801, ``Adjustment of the
Roll Control Input-Module,'' of Subject 27-11-13, ``Roll Control Input-
Module,'' of Chapter 27, ``Flight Controls,'' in Part II of the
Bombardier Global 5000 Featuring Global Vision Flight Deck Aircraft
Maintenance Manual, Publication No. GL 5000 GVFD AMM, Revision 37,
dated February 22, 2021.
Tasks 27-11-13-400-801, ``Installation of the Roll Control
Input-Module'' (including Figure 401, ``Roll Control Input-Module--
Removal/Installation''), 27-11-13-720-801, ``Functional Test of the
Roll Control Input-Module,'' and 27-11-13-820-801, ``Adjustment of the
Roll Control Input-Module,'' of Subject 27-11-13, ``Roll Control Input-
Module,'' of Chapter 27, ``Flight Controls,'' in Part II of the Global
5500 Aircraft Maintenance Manual, Publication No. GL 5500 AMM, Revision
6, dated February 22, 2021.
Tasks 27-11-13-400-801, ``Installation of the Roll Control
Input-Module'' (including Figure 401, ``Roll Control Input-Module--
Removal/Installation''), 27-11-13-720-801, ``Functional Test of the
Roll Control Input-Module,'' and 27-11-13-820-801, ``Adjustment of the
Roll Control Input-Module,'' of Subject 27-11-13, ``Roll Control Input-
Module,'' of Chapter 27, ``Flight Controls,'' in Part II of the
Bombardier Global 6000 Aircraft Maintenance Manual, Publication No. GL
6000 AMM, Revision 38, dated February 22, 2021.
Tasks 27-11-13-400-801, ``Installation of the Roll Control
Input-Module'' (including Figure 401, ``Roll Control Input-Module--
Removal/Installation''), 27-11-13-720-801, ``Functional Test of the
Roll Control Input-Module,'' and 27-11-13-820-801, ``Adjustment of the
Roll Control Input-Module,'' of Subject 27-11-13, ``Roll Control Input-
Module,'' of Chapter 27, ``Flight Controls,'' in Part II of the
Bombardier Global 6500 Aircraft Maintenance Manual, Publication No. GL
6500 AMM, Revision 7, dated February 22, 2021.
Tasks 27-11-13-400-801, ``Installation of the Roll Control
Input-Module'' (including Figure 401, ``Roll Control Input-Module--
Removal/Installation''), 27-11-13-720-801, ``Functional Test of the
Roll Control Input-Module,'' and 27-11-13-820-801, ``Adjustment of the
Roll Control Input-Module,'' of Subject 27-11-13, ``Roll Control Input-
Module,'' of Chapter 27, ``Flight Controls,'' in Part II of the
Bombardier Global Express XRS Aircraft Maintenance Manual, Publication
No. BD-700 XRS AMM, Revision 67, dated February 22, 2021. (For
obtaining the tasks for Bombardier Global Express XRS Aircraft
Maintenance Manual, Publication No. BD-700 XRS AMM, use Document
Identification No. GL XRS AMM.)
This service information is reasonably available because the
interested parties have access to it through their normal course of
business or by the means identified in the ADDRESSES section.

FAA's Determination

This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant
to the FAA's bilateral agreement with the State of Design Authority,
the FAA has been notified of the unsafe condition described in the MCAI
and service information referenced above. The FAA is issuing this AD
because the FAA evaluated all pertinent information and determined the
unsafe condition exists and is likely to exist or develop on other
products of the same type design.

Requirements of This AD

This AD requires revising the existing maintenance or inspection
program, as applicable, to incorporate certain AMM tasks.

Justification for Immediate Adoption and Determination of the Effective
Date

Section 553(b)(3)(B) of the Administrative Procedure Act (APA) (5
U.S.C. 551 et seq.) authorizes agencies to dispense with notice and
comment procedures for rules when the agency, for ``good cause,'' finds
that those procedures are ``impracticable, unnecessary, or contrary to
the public interest.'' Under this section, an agency, upon finding good
cause, may issue a final rule without providing notice and seeking
comment prior to issuance. Further, section 553(d) of the APA
authorizes agencies to make rules effective in less than thirty days,
upon a finding of good cause.
An unsafe condition exists that requires the immediate adoption of
this AD without providing an opportunity for public comments prior to
adoption. The FAA has found that the risk to the flying public
justifies forgoing notice and comment prior to adoption of this rule
because incorrect installation of one or both RCIMs results in a
misrigging condition, causing the multi-function spoilers to deploy
opposite to the roll command, and could lead to loss of control of the
airplane. Accordingly, notice and opportunity for prior public comment
are impracticable and contrary to the public interest pursuant to 5
U.S.C. 553(b)(3)(B).
In addition, the FAA finds that good cause exists pursuant to 5
U.S.C. 553(d) for making this amendment effective in less than 30 days,
for the same reasons the FAA found good cause to forgo notice and
comment.

Comments Invited

The FAA invites you to send any written relevant data, views, or
arguments about this AD. Send your comments to an address listed under
ADDRESSES. Include ``Docket No. FAA-2021-0268; Project Identifier MCAI-
2020-01382-T'' at the beginning of your comments. The most helpful
comments reference a specific portion of the final rule, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
this final rule because of those comments.
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
https://www.regulations.gov, including any personal information you
provide. The agency will also post a report summarizing each
substantive verbal contact received about this final rule.

Confidential Business Information

CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this AD contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this AD, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this AD. Submissions containing CBI should be sent to Darren
Gassetto, Aerospace Engineer, Mechanical Systems and Administrative
Services Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite
410, Westbury, NY 11590; telephone 516-228-7323; fax 516-794-5531;
email 9-avs-nyaco-cos@faa.gov. Any commentary that the FAA receives which is
not specifically designated as CBI will be placed in the public docket
for this rulemaking.

Regulatory Flexibility Act (RFA)

The requirements of the RFA do not apply when an agency finds good
cause pursuant to 5 U.S.C. 553 to adopt a rule without prior notice and
comment. Because the FAA has determined that it has good cause to adopt
this rule without notice and comment, RFA analysis is not required.

Costs of Compliance

The FAA estimates that this AD affects 397 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
The FAA has determined that revising the maintenance or inspection
program takes an average of 90 work-hours per operator, although the
agency recognizes that this number may vary from operator to operator.
Since operators incorporate maintenance or inspection program changes
for their affected fleet(s), the FAA has determined that a per-operator
estimate is more accurate than a per-airplane estimate. Therefore, the
agency estimates the average total cost per operator to be $7,650 (90
work-hours x $85 per work-hour).

Authority for This Rulemaking

Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
The FAA is issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: General requirements.
Under that section, Congress charges the FAA with promoting safe flight
of civil aircraft in air commerce by prescribing regulations for
practices, methods, and procedures the Administrator finds necessary
for safety in air commerce. This regulation is within the scope of that
authority because it addresses an unsafe condition that is likely to
exist or develop on products identified in this rulemaking action.

Regulatory Findings

The FAA determined that this AD will not have federalism
implications under Executive Order 13132. This AD will not have a
substantial direct effect on the States, on the relationship between
the national government and the States, or on the distribution of power
and responsibilities among the various levels of government.
For the reasons discussed above, I certify that this AD:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866, and
(2) Will not affect intrastate aviation in Alaska.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.

Adoption of the Amendment

Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

1. The authority citation for part 39 continues to read as follows:

Authority: 49 U.S.C. 106(g), 40113, 44701.

Sec. 39.13 [Amended]

2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive: