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Proposed Rule2021-19237

Airworthiness Directives; Bombardier, Inc., Airplanes

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Published

September 8, 2021

Issuing agencies

Transportation DepartmentFederal Aviation Administration

Abstract

The FAA proposes to supersede Airworthiness Directive (AD) 2017-22-06, which applies to certain Bombardier, Inc., Model CL-600- 2B16 (601-3A, 601-3R, and 604 Variants) airplanes. AD 2017-22-06 requires repetitive inspections for fuel leakage at the engine and auxiliary power unit (APU) fuel pumps, and related investigative and corrective actions if necessary. Since the FAA issued AD 2017-22-06, terminating actions have been developed and additional airplanes have been determined to be affected by the unsafe condition. This proposed AD would retain the requirements of AD 2017-22-06, and require an inspection of the APU, repair if necessary, and modification of the engine electrical fuel pump (EFP) installation. This proposed AD would also add airplanes to the applicability. The FAA is proposing this AD to address the unsafe condition on these products.

Full Text

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<title>Federal Register, Volume 86 Issue 171 (Wednesday, September 8, 2021)</title>
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[Federal Register Volume 86, Number 171 (Wednesday, September 8, 2021)]
[Proposed Rules]
[Pages 50291-50295]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2021-19237]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0725; Project Identifier MCAI-2020-01402-T]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD)
2017-22-06, which applies to certain Bombardier, Inc., Model CL-600-
2B16 (601-3A, 601-3R, and 604 Variants) airplanes. AD 2017-22-06
requires repetitive inspections for fuel leakage at the engine and
auxiliary power unit (APU) fuel pumps, and related investigative and
corrective actions if necessary. Since the FAA issued AD 2017-22-06,
terminating actions have been developed and additional airplanes have
been determined to be affected by the unsafe condition. This proposed
AD would retain the requirements of AD 2017-22-06, and require an
inspection of the APU, repair if necessary, and modification of the
engine electrical fuel pump (EFP) installation. This proposed AD would
also add airplanes to the applicability. 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 October 25,
2021.

ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
<bullet> Federal eRulemaking Portal: Go to <a href="https://www.regulations.gov">https://www.regulations.gov</a>. Follow the instructions for submitting comments.
<bullet> Fax: 202-493-2251.
<bullet> 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.

[[Page 50292]]

<bullet> 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 NPRM, contact
Bombardier, Inc., 200 C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec
H4S 2A3, Canada; North America toll-free telephone 1-866-538-1247 or
direct-dial telephone 1-514-855-2999; email <a href="/cdn-cgi/l/email-protection#7b1a1855020e173b1a1e091455191416191a091f121e0955181416">[email&#160;protected]</a>;
internet <a href="https://www.bombardier.com">https://www.bombardier.com</a>. 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 206-231-3195.

Examining the AD Docket

You may examine the AD docket on the internet at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and locating Docket No. FAA-2021-
0725; or in person at Docket Operations between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays. The AD docket contains
this NPRM, any comments received, and other information. The street
address for Docket Operations is listed above.

FOR FURTHER INFORMATION CONTACT: Steven Dzierzynski, Aerospace
Engineer, Avionics and Electrical Systems Section, FAA, New York ACO
Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone
516-228-7367; fax 516-794-5531; email <a href="/cdn-cgi/l/email-protection#330a1e5245401e5d4a52505c1e505c40735552521d545c45">[email&#160;protected]</a>.

SUPPLEMENTARY INFORMATION:

Comments Invited

The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2021-0725; Project Identifier
MCAI-2020-01402-T'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, 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
the proposal 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
<a href="https://www.regulations.gov">https://www.regulations.gov</a>, including any personal information you
provide. The agency will also post a report summarizing each
substantive verbal contact received about this proposed AD.

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 NPRM 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 NPRM, 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 NPRM. Submissions containing CBI should be sent to
Steven Dzierzynski, Aerospace Engineer, Avionics and Electrical Systems
Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516-228-7367; fax 516-794-5531; email <a href="/cdn-cgi/l/email-protection#122b3f7364613f7c6b73717d3f717d61527473733c757d64">[email&#160;protected]</a>. Any commentary that the FAA receives which is
not specifically designated as CBI will be placed in the public docket
for this rulemaking.

Background

The FAA issued AD 2017-22-06, Amendment 39-19086 (82 FR 49498,
October 26, 2017) (AD 2017-22-06), for certain Bombardier, Inc., Model
CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. AD 2017-22-06
requires repetitive inspections for fuel leakage at the engine and APU
fuel pumps, and related investigative and corrective actions if
necessary. AD 2017-22-06 resulted from reports of fuel leaks in the
engine and APU EFP cartridge/canister electrical connectors and
conduits. The FAA issued AD 2017-22-06 to address fuel leaks in certain
fuel pumps to remove a potential fuel ignition hazard. FAA AD 2017-22-
06 corresponds to AD CF-2016-32R1, dated October 12, 2016, issued by
Transport Canada Civil Aviation (TCCA), which is the aviation authority
for Canada.

Actions Since AD 2017-22-06 Was Issued

The preamble to AD 2017-22-06 explains that the FAA considered the
requirements ``interim action'' and was considering further rulemaking.
The FAA has now determined that further rulemaking is indeed necessary,
and this proposed AD follows from that determination.
Since the FAA issued AD 2017-22-06, a general visual inspection of
the APU and a modification of the engine EFP installation have been
developed to address the root cause of the fuel leaks and provide
terminating action for the repetitive general visual inspections and
rectifications of fuel leaks from the engine and APU EFP electrical
wiring conduit outlets. In addition, it was determined that additional
airplanes are affected by the unsafe condition.
TCCA has issued TCCA AD CF-2016-32R4, dated October 13, 2020 (TCCA
AD CF-2016-32R4); and TCCA AD CF-2020-38, dated October 13, 2020 (TCCA
AD CF-2020-38); to correct an unsafe condition for certain Bombardier,
Inc., Model CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes.
This proposed AD refers to the TCCA ADs as the Mandatory Continuing
Airworthiness Information, or the MCAI. You may examine the MCAI in the
AD docket on the internet at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching
for and locating Docket No. FAA-2021-0725.
This proposed AD was prompted by reports of fuel leaks from the
electrical connectors and conduits of the engine and APU EFP cartridge/
canister, and additional actions have been developed to address the
root cause of the fuel leaks. The FAA is proposing this AD to address
the potential for a fire hazard as a result of fuel leak from the APU
EFP electrical conduit in the hot landing light compartment. See the
TCCA ADs for additional background information.

Related Service Information Under 1 CFR Part 51

Bombardier has issued the following service information, which
describes procedures for repetitive general visual inspections and
rectifications for any fuel leak from the engine and APU EFP electrical
wiring conduit outlets. These documents are distinct since they apply
to different airplane serial numbers.
<bullet> Bombardier Service Bulletin 604-28-022, Revision 3, dated
August 31, 2018.
<bullet> Bombardier Service Bulletin 605-28-010, Revision 3, dated
August 31, 2018.
<bullet> Bombardier Service Bulletin 650-28-001, Revision 3, dated
January 3, 2019.
Bombardier has also issued the following service information, which
describes procedures for a detailed visual inspection of the APU for
any damage or deformations (e.g., cut wires and a broken harness
assembly of the fuel boost pump connector), modifying

[[Page 50293]]

the engine EFP installation, and repair if necessary. These documents
are distinct since they apply to different airplane serial numbers.
<bullet> Bombardier Service Bulletin 604-28-024, dated June 16,
2020.
<bullet> Bombardier Service Bulletin 650-28-002, dated June 16,
2020.
<bullet> Bombardier Service Bulletin 605-28-012, dated June 16,
2020.
This proposed AD would also require Bombardier Service Bulletin
604-28-022, dated October 19, 2015, and Bombardier Service Bulletin
605-28-010, dated October 19, 2015, which the Director of the Federal
Register approved for incorporation by reference as of November 30,
2017 (82 FR 49498, October 26, 2017).
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 proposing this AD
because the FAA evaluated all the relevant information and determined
the unsafe condition described previously is likely to exist or develop
on other products of the same type design.

Proposed Requirements of This NPRM

This proposed AD would retain all of the requirements of AD 2017-
22-06 and require accomplishing the actions specified in the service
information described previously, except as discussed under
``Difference Between this Proposed AD and the MCAI.

Difference Between This Proposed AD and the MCAI

Paragraph E.1. of TCCA AD CF-2016-32R4, for airplane serial numbers
6125 through 6163, requires inspecting for fuel leaks within 600 hours
or 12 months, whichever occurs first after ``the date of aeroplane
entry in-service.'' Paragraph (i) of this proposed AD, however, would
require compliance for those airplanes within 600 flight hours or 12
months, whichever occurs first after ``the effective date of this [FAA]
AD.'' Paragraph D.1. of TCCA AD CF-2016-32R4 requires compliance for
this action for other serial numbers within 600 flight hours or 12
months after the effective date of the AD. The FAA has determined that
the risk is not higher for serial numbers 6125 through 6163 compared
with the other identified airplanes required to accomplish the same
inspection. Therefore, for this AD, the compliance time is the same for
all airplanes that are required to inspect for fuel leaks.

Costs of Compliance

The FAA estimates that this proposed AD affects 128 airplanes of
U.S. registry.
The FAA estimates the following costs to comply with this proposed
AD:

Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
Cost on U.S.
Action Labor cost Parts cost Cost per product operators
----------------------------------------------------------------------------------------------------------------
Retained actions from AD 1 work-hour x $85 $0 $85 per inspection $10,285 per
2017[dash]22[dash]06 (for 121 per hour = $85. cycle. inspection cycle.
airplanes).
New proposed actions............. 20 work-hours x $85 1,768 $3,468............. $443,904.
per hour = $1,700.
----------------------------------------------------------------------------------------------------------------

The FAA estimates the following costs to do any necessary repair
that would be required based on the results of any required actions.
The FAA has no way of determining the number of aircraft that might
need this repair:

Estimated Costs of On-Condition Actions
------------------------------------------------------------------------
Cost per
Labor cost Parts cost product
------------------------------------------------------------------------
5 work-hours x $85 per hour = $425.... $8,618 $9,043
------------------------------------------------------------------------

According to the manufacturer, some or all of the costs of this
proposed AD may be covered under warranty, thereby reducing the cost
impact on affected operators. The FAA does not control warranty
coverage for affected operators. As a result, the FAA has included all
known costs in the cost estimate.

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 has determined that this proposed AD would not have
federalism implications under Executive Order 13132. This proposed AD
would 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 this proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Would not affect intrastate aviation in Alaska, and
(3) Would not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.

[[Page 50294]]

List of Subjects in 14 CFR Part 39

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

The Proposed Amendment

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

PART 39--AIRWORTHINESS DIRECTIVES

0
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]

0
2. The FAA amends Sec. 39.13 by:
0
a. Removing Airworthiness Directive (AD) 2017-22-06, Amendment 39-19086
(82 FR 49498, October 26, 2017), and
0
b. Adding the following new AD:

Bombardier, Inc.: Docket No. FAA-2021-0725; Project Identifier MCAI-
2020-01402-T.

(a) Comments Due Date

The FAA must receive comments on this airworthiness directive
(AD) by October 25, 2021.

(b) Affected ADs

This AD replaces AD 2017-22-06, Amendment 39-19086 (82 FR 49498,
October 26, 2017) (AD 2017-22-06).

This AD applies to Bombardier, Inc., Model CL-600-2B16 (601-3A,
601-3R, and 604 Variants) airplanes, certificated in any category,
serial numbers 5301 through 5665 inclusive, 5701 through 5990
inclusive, and 6050 through 6163 inclusive.

(d) Subject

Air Transport Association (ATA) of America Code 28, Fuel.

(e) Reason

This AD was prompted by reports of fuel leaks from the
electrical connectors and conduits of the engine and auxiliary power
unit (APU) electrical fuel pump (EFP) cartridge/canister, and
additional actions have been developed to address the root cause of
the fuel leaks. The FAA is issuing this AD to address the potential
for a fire hazard as a result of fuel leak from the APU EFP
electrical conduit in the hot landing light compartment.

(f) Compliance

Comply with this AD within the compliance times specified,
unless already done.

(g) Retained Actions for Certain Airplanes, With Revised Service
Information and Method of Compliance Provisions

This paragraph restates the requirements of paragraph (g) of AD
2017-22-06, with revised service information and method of
compliance provisions. For Model CL-600-2B16 airplanes having serial
numbers 5301 through 5665 inclusive: Within 600 flight hours or 12
months, whichever occurs first after November 30, 2017 (the
effective date of AD 2017-22-06), do the inspections specified in
paragraphs (g)(1) through (3) of this AD, and do all applicable
corrective actions, in accordance with the Accomplishment
Instructions of Bombardier Service Bulletin 604-28-022, dated
October 19, 2015, or Bombardier Service Bulletin 604-28-022,
Revision 3, dated August 31, 2018. Do all applicable corrective
actions before further flight. Repeat the inspections at intervals
not to exceed 600 flight hours or 12 months, whichever occurs first.
As the effective date of this AD, use Bombardier Service Bulletin
604-28-022, Revision 3, dated August 31, 2018, only.
(1) Do a general visual inspection for traces of fuel coming
from the right-hand engine boost pump at the location of the belly
fairing screw (FS412, BL 0.0).
(2) Do a general visual inspection for traces of fuel coming
from the left-hand engine boost pump at the location of the belly
fairing screw (FS412, BL 0.0).
(3) Do a general visual inspection for traces of fuel coming
from the EFP electrical wiring conduit outlet at the lower body
fairing area for engine EFPs and at the right-hand landing light
compartment for the APU EFP.

(h) Retained Actions for Certain Other Airplanes, With Revised Service
Information and Compliance Method Provisions

This paragraph restates the requirements of paragraph (h) of AD
2017-22-06, with revised service information and compliance method
provisions. For Model CL-600-2B16 airplanes having serial numbers
5701 through 5955 inclusive, 5957, 5960 through 5966 inclusive, 5968
through 5971 inclusive, and 5981: Within 600 flight hours or 12
months, whichever occurs first after November 30, 2017 (the
effective date of AD 2017-22-06), do the inspections specified in
paragraphs (h)(1) through (3) of this AD, and do all applicable
related investigative and corrective actions, in accordance with the
Accomplishment Instructions in Bombardier Service Bulletin 605-28-
010, dated October 19, 2015, or Bombardier Service Bulletin 605-28-
010, Revision 3, dated August 31, 2018. Do all applicable related
investigative and corrective actions before further flight. Repeat
the inspections at intervals not to exceed 600 flight hours or 12
months, whichever occurs first. As of the effective date of this AD,
use Bombardier Service Bulletin 605-28-010, Revision 3, dated August
31, 2018, only.
(1) Do a general visual inspection for traces of fuel coming
from the right-hand engine boost pump at the location of the belly
fairing screw (FS412, BL 0.0).
(2) Do a general visual inspection for traces of fuel coming
from the left-hand engine boost pump at the location of the belly
fairing screw (FS412, BL 0.0).
(3) Do a general visual inspection of the right-hand landing
light compartment for traces of fuel coming from the APU EFP.

(i) New Requirements of This AD: Inspections and Rectifications

For the airplanes identified in figure 1 to paragraph (i) of
this AD: At the applicable compliance time specified in figure 1 to
paragraph (i) of this AD, do a general visual inspection for any
fuel leak from the engine and APU EFP electrical wiring conduit
outlets, in accordance with the Accomplishment Instructions of the
applicable service information specified in figure 1 to paragraph
(i) of this AD. If any fuel leak is found during the general visual
inspection, before further flight, correct the fuel leak in
accordance with the Accomplishment Instructions of the applicable
service information specified in figure 1 to paragraph (i) of this
AD. Thereafter, repeat the general visual inspection at intervals
not to exceed 600 flight hours or 12 months, whichever occurs first.

Figure 1 to Paragraph (i)--Compliance Times and Service Information
------------------------------------------------------------------------
Bombardier service
Serial Nos.-- Compliance time-- bulletin--
------------------------------------------------------------------------
5956, 5958, 5959, 5967, 5972 Within 600 flight Bombardier Service
through 5980 inclusive, and hours or 12 Bulletin 605-28-
5982 through 5990 inclusive. months, whichever 010, Revision 3,
occurs first dated August 31,
after the 2018.
effective date of
this AD.
6050 through 6163 inclusive..... Within 600 flight Bombardier Service
hours or 12 Bulletin 650-28-
months, whichever 001, Revision 3,
occurs first dated January 3,
after the 2019.
effective date of
this AD.
------------------------------------------------------------------------

(j) New Requirements of This AD: Inspection and Modification

Within 60 months after the effective date of this AD: Do a
detailed visual inspection of the APU for any damage or
deformations, and modify the engine EFP installation, in accordance
with the Accomplishment Instructions of the applicable service
information specified in figure 2 to paragraph (j) of this AD. If
any damage or deformations are found during the detailed visual
inspection, before further flight, do the repair

[[Page 50295]]

in accordance with the Accomplishment Instructions of the applicable
service information specified in figure 2 to paragraph (j) of this
AD.

Figure 2 to Paragraph (j)--Service Information
------------------------------------------------------------------------
Serial Nos.-- Bombardier service bulletin--
------------------------------------------------------------------------
5301 through 5665 inclusive............ Bombardier Service Bulletin 604-
28-024, dated June 16, 2020.
5701 through 5990 inclusive............ Bombardier Service Bulletin 605-
28-012, dated June 16, 2020.
6050 through 6163 inclusive............ Bombardier Service Bulletin 650-
28-002, dated June 16, 2020.
------------------------------------------------------------------------

(k) No Reporting Requirement

Where service information identified in this AD specifies to
submit certain information to the manufacturer, this AD does not
include that requirement.

(l) Terminating Actions

Accomplishing the actions required by paragraph (j) of this AD
terminates all requirements of this AD.

(m) Credit for Previous Actions

(1) This paragraph provides credit for actions required by
paragraph (g) of this AD, if those actions were performed before the
effective date of this AD using Bombardier Service Bulletin 604-28-
022, dated October 19, 2015, provided that within 4 months or 150
flight hours from the effective date of this AD or within 1 year
from the last inspection, whichever occurs first, the actions
accomplished in paragraph (g) are done using Bombardier Service
Bulletin 604-28-022, Revision 3, dated August 31, 2018.
(2) This paragraph provides credit for actions required by
paragraph (h) of this AD, if those actions were performed before the
effective date of this AD using Bombardier Service Bulletin 605-28-
010, dated October 19, 2015, provided that within 4 months or 150
flight hours from the effective date of this AD or within 1 year
from the last inspection, whichever occurs first, the actions
accomplished in paragraph (h) of this AD are done using Bombardier
Service Bulletin 605-28-010, Revision 3, dated August 31, 2018.
(3) This paragraph provides credit for actions required by
paragraph (i) of this AD, if those actions were performed before the
effective date of this AD using the service information in
paragraphs (l)(3)(i) through (iii) of this AD, provided that within
1 year from the last inspection, the actions accomplished in
paragraph (i) of this AD are done using Bombardier Service Bulletin
650-28-001, Revision 3, dated January 3, 2019. This service
information is not incorporated by reference in this AD.
(i) Bombardier Service Bulletin 650-28-001, dated November 3,
2017.
(ii) Bombardier Service Bulletin 650-28-001, Revision 1, dated
May 14, 2018.
(iii) Bombardier Service Bulletin 650-28-001, Revision 2, dated
August 31, 2018.

(n) Other FAA AD Provisions

(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 York ACO Branch, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516-228-7300; fax 516-794-5531. 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
Bombardier, Inc.'s TCCA Design Approval Organization (DAO). If
approved by the DAO, the approval must include the DAO-authorized
signature.

(o) Related Information

(1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) TCCA AD CF-2016-32R4, dated October 13, 2020; and TCCA AD CF-
2020-38, dated October 13, 2020; for related information. This MCAI
may be found in the AD docket on the internet at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and locating Docket No. FAA-
2021-0725.
(2) For more information about this AD, contact Steven
Dzierzynski, Aerospace Engineer, Avionics and Electrical Systems
Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516-228-7367; fax 516-794-5531; email
<a href="/cdn-cgi/l/email-protection#9fa6b2fee9ecb2f1e6fefcf0b2fcf0ecdff9fefeb1f8f0e9">[email&#160;protected]</a>.
(3) For service information identified in this AD, contact
Bombardier, Inc., 200 C[ocirc]te-Vertu Road West, Dorval,
Qu[eacute]bec H4S 2A3, Canada; North America toll-free telephone 1-
866-538-1247 or direct-dial telephone 1-514-855-2999; email
<a href="/cdn-cgi/l/email-protection#e08183ce99958ca08185928fce828f8d82819284898592ce838f8d">[email&#160;protected]</a>; internet <a href="https://www.bombardier.com">https://www.bombardier.com</a>. 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 206-231-3195.

Issued on September 1, 2021.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021-19237 Filed 9-7-21; 8:45 am]
BILLING CODE 4910-13-P

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