Airworthiness Directives; Bombardier, Inc., Airplanes, 36243-36246 [2021-14611]
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Federal Register / Vol. 86, No. 129 / Friday, July 9, 2021 / Proposed Rules
(e) Unsafe Condition
This AD was prompted by a report of
cracks on the M/R scissor link. The FAA is
issuing this AD to replace the metal bushings
installed on the M/R swashplate guide
bellcrank with plastic bushings. The unsafe
condition, if not addressed, could result in
failure of the M/R swashplate guide bellcrank
and reduced control of the helicopter.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Required Actions
(1) Within 50 hours time-in-service (TIS) or
2 months, whichever occurs first after the
effective date of this AD:
(i) Disconnect the bellcrank from the
swashplate guide by removing each bolt and,
ensuring that the bellcrank remains attached
to the flight control rod, remove each metal
bushing from service using a bushing
disassembly tool.
(ii) Visually inspect the lug bore area for
any corrosion and any cracks. If there is any
corrosion or any cracks, before further flight,
remove the swashplate guide from service or
repair it using an FAA-approved method. If
there is no corrosion and no cracks, install
plastic bushing part number HG22–1001,
coat plastic bushing with isolation
compound, re-install the bellcrank, torque
each bolt to 7.5 Nm–9 Nm (5.5 ft-lbs–6.6 ftlbs), and install cotter pins.
(2) As of the effective date of this AD, do
not install any metal bushing on any
helicopter.
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(h) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, International Validation
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 International Validation
Branch, send it to the attention of the person
identified in paragraph (i)(1) of this AD.
Information may be emailed to: 9-AVS-AIR730-AMOC@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.
(i) Related Information
(1) For more information about this AD,
contact Andrea Jimenez, Aerospace Engineer,
COS Program Management Section,
Operational Safety Branch, Compliance &
Airworthiness Division, FAA, 1600 Stewart
Ave., Westbury, NY 11590; telephone (516)
228–7330; email andrea.jimenez@faa.gov.
(2) Guimbal Service Bulletin SB 17–003,
Revision C, dated July 12, 2019, which is not
incorporated by reference, contains
additional information about the subject of
this AD. For service information identified in
this AD, contact He´licopte`res Guimbal, Basile
Ginel, 1070, rue du Lieutenant Parayre,
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Ae´rodrome d’Aix-en-Provence, 13290 Les
Milles, France; telephone 33–04–42–39–10–
88; email basile.ginel@guimbal.com; web
https://www.guimbal.com. You may view
this referenced service information at the
FAA, Office of the Regional Counsel,
Southwest Region, 10101 Hillwood Pkwy.,
Room 6N–321, Fort Worth, TX 76177. For
information on the availability of this
material at the FAA, call (817) 222–5110.
(3) The subject of this AD is addressed in
European Union Aviation Safety Agency
(EASA) AD 2019–0185, dated July 30, 2019.
You may view the EASA AD on the internet
at https://www.regulations.gov in Docket No.
FAA–2021–0498.
Issued on June 10, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021–14495 Filed 7–8–21; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2021–0560; Project
Identifier MCAI–2021–00192–T]
RIN 2120–AA64
Airworthiness Directives; Bombardier,
Inc., Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
The FAA proposes to adopt a
new airworthiness directive (AD) for
certain Bombardier, Inc., Model BD–
700–1A10 and BD–700–1A11 airplanes.
This proposed AD was prompted by
reports that the sliding bushings in the
forward engine mount system were
missing. This proposed AD would
require an inspection (gap check) of the
front and aft engine mounts to verify the
proper installation of the sliding
bushings, and repair if necessary. 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 August 23,
2021.
SUMMARY:
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,
ADDRESSES:
PO 00000
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36243
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 NPRM, contact Bombardier, Inc.,
400 Coˆte-Vertu Road West, Dorval,
Que´bec H4S 1Y9, Canada; telephone
514–855–5000; fax 514–855–7401; email
thd.crj@aero.bombardier.com; internet
https://www.bombardier.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 206–231–3195.
Examining the AD Docket
You may examine the AD docket at
https://www.regulations.gov by
searching for and locating Docket No.
FAA–2021–0560; 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:
Siddeeq Bacchus, Aerospace Engineer,
Mechanical Systems and Administrative
Services Section, FAA, New York ACO
Branch, 1600 Stewart Avenue, Suite
410, Westbury, NY 11590; telephone
516–228–7362; fax 516–794–5531; email
9-avs-nyaco-cos@faa.gov.
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–2021–0560; Project Identifier
MCAI–2021–00192–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 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 NPRM.
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36244
Federal Register / Vol. 86, No. 129 / Friday, July 9, 2021 / Proposed Rules
condition for certain Bombardier, Inc.,
Model BD–700–1A10 and BD–700–
1A11 airplanes. You may examine the
MCAI in the AD docket at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2021–
0560.
This proposed AD was prompted by
reports that the sliding bushings in the
forward engine mount system were
missing. The FAA is proposing this AD
to address redistribution of load/stress
on the mount components, which may
decrease the component fatigue life;
failure of the mount structural
components could result in the loss of
the engine attachment to the airframe.
See the MCAI for additional background
information.
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 Siddeeq Bacchus,
Aerospace Engineer, Mechanical
Systems and Administrative Services
Section, FAA, New York ACO Branch,
1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516–
228–7362; fax 516–794–5531; email 9avs-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.
Related Service Information Under 1
CFR Part 51
Bombardier, Inc., has issued the
following service information.
• Bombardier Service Bulletin 700–
1A11–71–005, dated December 14,
2020.
• Bombardier Service Bulletin 700–
71–005, dated December 14, 2020.
• Bombardier Service Bulletin 700–
71–5005, dated December 14, 2020.
• Bombardier Service Bulletin 700–
71–5501, dated December 14, 2020.
• Bombardier Service Bulletin 700–
71–6005, December 14, 2020.
• Bombardier Service Bulletin 700–
71–6501, December 14, 2020.
This service information describes
procedures for verifying the proper
installation of the sliding bushings by
doing an inspection (gap check),
including a gap outside acceptable
limits, a missing or damaged nut or bolt
Background
Transport Canada Civil Aviation
(TCCA), which is the aviation authority
for Canada, has issued TCCA AD CF–
2021–04, dated February 15, 2021 (also
referred to after this as the Mandatory
Continuing Airworthiness Information,
or the MCAI), to correct an unsafe
at the upper side of front mount beam,
and a bolt that turns freely with finger
pressure. These documents are distinct
since they apply to different airplane
serial numbers. 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 AD Requirements in This
NPRM
This proposed AD would require
accomplishing the actions specified in
the service information already
described.
Costs of Compliance
The FAA estimates that this AD, if
adopted as proposed, would affect 376
airplanes of U.S. registry. The FAA
estimates the following costs to comply
with this proposed AD:
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ESTIMATED COSTS FOR REQUIRED ACTIONS
Labor cost
Parts cost
Cost per
product
Cost on U.S.
operators
11 work-hours × $85 per hour = $935 ........................................................................................
$0
$935
$351,560
The FAA has received no definitive
data on which to base the cost estimates
for the repairs specified in this proposed
AD.
The FAA has included all known
costs in its cost estimate. According to
the manufacturer, however, some or all
of the costs of this proposed AD may be
covered under warranty, thereby
reducing the cost impact on affected
operators.
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:
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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
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develop on products identified in this
rulemaking action.
Regulatory Findings
The FAA 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,
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Federal Register / Vol. 86, No. 129 / Friday, July 9, 2021 / Proposed Rules
(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.
Bombardier, Inc.: Docket No. FAA–2021–
0560; Project Identifier MCAI–2021–
00192–T.
List of Subjects in 14 CFR Part 39
(b) Affected ADs
None.
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
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive:
■
(a) Comments Due Date
The FAA must receive comments on this
airworthiness directive (AD) by August 23,
2021.
(c) Applicability
This AD applies to Bombardier, Inc.,
Model BD–700–1A10 and BD–700–1A11
airplanes, certificated in any category, serial
numbers 9002 through 9879 inclusive, 9998,
60001 through 60005 inclusive, 60007,
60009, 60015, 60016, and 60024.
(d) Subject
Air Transport Association (ATA) of
America Code 71, Powerplant.
(e) Unsafe Condition
This AD was prompted by reports that the
sliding bushings in the forward engine mount
system were missing. The FAA is issuing this
AD to address redistribution of load/stress on
the mount components, which may decrease
the component fatigue life; failure of the
mount structural components could result in
the loss of the engine attachment to the
airframe.
36245
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Inspection and Corrective Action
Within 15 months or 750 flight hours,
whichever occurs first, after the effective date
of this AD: Verify the proper installation of
the sliding bushings by doing an inspection
(gap check) for discrepancies of the front and
aft engine mounts, in accordance with
paragraphs 2.B. through 2.F. of the
Accomplishment Instructions of the
applicable service information specified in
figure 1 to paragraph (g) of this AD. If any
discrepancy is found: Before further flight,
repair 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 DAOauthorized signature. Where a serial number
is identified in more than one row in figure
1 to paragraph (g) of this AD, the applicable
service information is identified based on the
marketing designations in paragraph 1.M.,
‘‘Equivalent Service Bulletins,’’ of each
service information.
BILLING CODE 4910–13–P
Serial Number-
Model-
Bombardier Service Bulletin-
9002 to 9312 inclusive, 9314 to
9380 inclusive, and 9384 to
9429 inclusive
BD-700-lAl0 700-71-005, dated December 14,
airplanes
2020
9313, 9381, 9432 to 9860
inclusive, 9863 to 9871
inclusive, 9873 to 9879
inclusive, 60005 and 60024
BD-700-lAl0 700-71-6005, December 14,
airplanes
2020
9861, 9872, 60001 to 60004
inclusive, 60009, and 60016
BD-700-lAl0 700-71-6501, December 14,
airplanes
2020
9127 to 9383 inclusive, 9389 to
9400 inclusive, 9404 to
943 linclusive, and 9998
BD-700-lAll
airplanes
9386, 9401, 9445 to 9862
inclusive, and 9868 to 9879
inclusive
BD-700-lAl 1 700-71-5005, dated December
airplanes
14,2020
60007 and 60015
BD-700-lAl 1 700-71-5501, dated December
14,2020
airplanes
700-lAl l-71-005, dated
December 14, 2020
BILLING CODE 4910–13–C
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Figure 1 to paragraph (g) - Service Information
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Federal Register / Vol. 86, No. 129 / Friday, July 9, 2021 / Proposed Rules
(h) No Reporting Requirement
(i) 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
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 TCCA; or Bombardier, Inc.’s TCCA
DAO. If approved by the DAO, the approval
must include the DAO-authorized signature.
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(j) Related Information
(1) Refer to Mandatory Continuing
Airworthiness Information (MCAI) TCCA AD
CF–2021–04, dated February 15, 2021; 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. FAA–2021–0560.
(2) For more information about this AD,
contact Siddeeq Bacchus, Aerospace
Engineer, Mechanical Systems and
Administrative Services Section, FAA, New
York ACO Branch, 1600 Stewart Avenue,
Suite 410, Westbury, NY 11590; telephone
516–228–7362; fax 516–794–5531; email 9avs-nyaco-cos@faa.gov.
(3) For service information identified in
this AD, contact Bombardier, Inc., 400 CoˆteVertu Road West, Dorval, Que´bec H4S 1Y9,
Canada; telephone 514–855–5000; fax 514–
855–7401; email thd.crj@
aero.bombardier.com; internet https://
www.bombardier.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
206–231–3195.
Issued on July 2, 2021.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives,
Compliance & Airworthiness Division,
Aircraft Certification Service.
[FR Doc. 2021–14611 Filed 7–8–21; 8:45 am]
BILLING CODE 4910–13–P
VerDate Sep<11>2014
16:48 Jul 08, 2021
carry letters. See 18 U.S.C. 1693–1699;
39 U.S.C. 601–606.1
39 CFR Chapter III
Section 601 provides specific
instances (exceptions) where letters may
be carried out of the mail (i.e., not
[Docket No. PI2021–2; Order No. 5930]
subject to the letter monopoly). Section
Public Inquiry
601(a) sets forth the conditions under
which a letter may be carried out of the
AGENCY: Postal Regulatory Commission.
mail, which include requiring that the
ACTION: Advanced notice of proposed
letter be enclosed in an envelope, that
rulemaking.
the proper amount of postage is affixed
to the envelope, and that the postage is
SUMMARY: The Commission seeks further
canceled. 39 U.S.C. 601(a).
input from the public about what
Section 601(b) provides additional
regulations promulgated by the
exceptions such that the letter
Commission may be necessary to carry
monopoly does not apply to letters
out the requirements of agency law.
charged more than six times the current
This document informs the public of
rate for the first ounce of a Single-Piece
this proceeding, invites public
First Class Letter or to letters weighing
comment, and takes other
more than 12.5 ounces. See 39 U.S.C.
administrative steps.
601(b)(1), (b)(2). The ‘‘grandfather
DATES: Comments are due: August 26,
clause’’ in Section 601(b)(3) references
2021.
exceptions from prior Postal Service
regulations that permitted private
ADDRESSES: Submit comments
carriage as in effect on July 1, 2005. 39
electronically via the Commission’s
U.S.C. 601(b)(3); see also 39 CFR 310.1
Filing Online system at https://
www.prc.gov. Those who cannot submit and 39 CFR 320.2–320.8 (2005).
Section 601(c), which is the subject of
comments electronically should contact
the person identified in the FOR FURTHER this proceeding, directs the Commission
(rather than the Postal Service) to
INFORMATION CONTACT section by
promulgate any regulations necessary to
telephone for advice on filing
carry out this section. 39 U.S.C. 601(c).
alternatives.
This Public Inquiry seeks to answer how
FOR FURTHER INFORMATION CONTACT:
the Commission shall meet this
David A. Trissell, General Counsel, at
statutory requirement.
202–789–6820.
Prior to the Postal Accountability and
SUPPLEMENTARY INFORMATION:
Enhancement Act (PAEA) of 2006, the
Postal Service issued regulations that
Table of Contents
purported to suspend the PES.2 The
I. Introduction
PAEA included the term ‘‘purport’’ to
II. Background
describe the Postal Service’s efforts to
III. Discussion
suspend the PES, reflecting some
IV. Comments
disagreement between the Postal Service
V. Ordering Paragraphs
and policymakers about the Postal
I. Introduction
Service’s authority to promulgate such
regulations prior to the PAEA.3 PostIn this docket, the Commission seeks
PAEA,
the law clearly cedes such
further input from the public about
authority to the Commission. These
what regulations promulgated by the
regulations defined the term ‘‘letter’’ as
Commission may be necessary to carry
‘‘a message directed to a specific person
out the requirements of 39 U.S.C. 601.
or address and recorded in or on a
Section 601 describes instances when
tangible object,’’ subject to several
letters may be carried out of the mail,
provisions. 39 CFR 310.1(a) (2005). The
or when the letter monopoly does not
regulations also described several
apply to a mailpiece. In particular, the
Commission seeks to determine whether statutory exceptions to the letter
monopoly, such as when the letter
regulations promulgated by the
accompanies and relates to cargo or
Commission are needed to carry out
when a special messenger is used. See
those statutory exemptions.
39 CFR 310.3 (2005). In addition, the
II. Background
POSTAL REGULATORY COMMISSION
Although the service information
identified in table 1 to paragraph (g) of this
AD specifies to submit certain information to
the manufacturer, this AD does not include
that requirement.
Jkt 253001
The Postal Service has exclusive
rights in the carriage and delivery of
letters under certain circumstances.
This letter monopoly is codified in the
Private Express Statutes (PES), which
are a group of civil and criminal statutes
that make it unlawful for any entity
other than the Postal Service to send or
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1 Although these provisions of the U.S. Code are
customarily referred to collectively as the ‘‘Private
Express Statutes,’’ they do not all relate to private
expresses or prohibit carriage of letters out of the
mails.
2 See Postal Accountability and Enhancement
Act, Public Law 109–435, 120 Stat. 3198 (2006); see
also 39 CFR 310, 320 (2005).
3 See H.R. Rep. No. 109–66, 109th Cong., 1st
Sess., pt. 1, at 58 (2005) (H.R. Rep. No. 109–66).
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]]>Agencies
[Federal Register Volume 86, Number 129 (Friday, July 9, 2021)]
[Proposed Rules]
[Pages 36243-36246]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-14611]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0560; Project Identifier MCAI-2021-00192-T]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc., Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11
airplanes. This proposed AD was prompted by reports that the sliding
bushings in the forward engine mount system were missing. This proposed
AD would require an inspection (gap check) of the front and aft engine
mounts to verify the proper installation of the sliding bushings, and
repair if necessary. 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 August 23,
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 NPRM, 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
[email protected]; internet https://www.bombardier.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 206-231-3195.
Examining the AD Docket
You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-0560; 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: Siddeeq Bacchus, Aerospace Engineer,
Mechanical Systems and Administrative Services Section, FAA, New York
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7362; fax 516-794-5531; email [email protected].
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-2021-0560; Project Identifier
MCAI-2021-00192-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
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 NPRM.
[[Page 36244]]
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
Siddeeq Bacchus, Aerospace Engineer, Mechanical Systems and
Administrative Services Section, FAA, New York ACO Branch, 1600 Stewart
Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7362; fax 516-
794-5531; email [email protected]. Any commentary that the FAA
receives which is not specifically designated as CBI will be placed in
the public docket for this rulemaking.
Background
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued TCCA AD CF-2021-04, dated February 15,
2021 (also 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 in the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA-2021-
0560.
This proposed AD was prompted by reports that the sliding bushings
in the forward engine mount system were missing. The FAA is proposing
this AD to address redistribution of load/stress on the mount
components, which may decrease the component fatigue life; failure of
the mount structural components could result in the loss of the engine
attachment to the airframe. See the MCAI for additional background
information.
Related Service Information Under 1 CFR Part 51
Bombardier, Inc., has issued the following service information.
Bombardier Service Bulletin 700-1A11-71-005, dated
December 14, 2020.
Bombardier Service Bulletin 700-71-005, dated December 14,
2020.
Bombardier Service Bulletin 700-71-5005, dated December
14, 2020.
Bombardier Service Bulletin 700-71-5501, dated December
14, 2020.
Bombardier Service Bulletin 700-71-6005, December 14,
2020.
Bombardier Service Bulletin 700-71-6501, December 14,
2020.
This service information describes procedures for verifying the
proper installation of the sliding bushings by doing an inspection (gap
check), including a gap outside acceptable limits, a missing or damaged
nut or bolt at the upper side of front mount beam, and a bolt that
turns freely with finger pressure. These documents are distinct since
they apply to different airplane serial numbers. 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 AD Requirements in This NPRM
This proposed AD would require accomplishing the actions specified
in the service information already described.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 376 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed AD:
Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
11 work-hours x $85 per hour = $935.......................... $0 $935 $351,560
----------------------------------------------------------------------------------------------------------------
The FAA has received no definitive data on which to base the cost
estimates for the repairs specified in this proposed AD.
The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some or all of the costs of
this proposed AD may be covered under warranty, thereby reducing the
cost impact on affected operators.
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 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,
[[Page 36245]]
(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.
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 adding the following new airworthiness
directive:
Bombardier, Inc.: Docket No. FAA-2021-0560; Project Identifier MCAI-
2021-00192-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by August 23, 2021.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Bombardier, Inc., Model BD-700-1A10 and BD-
700-1A11 airplanes, certificated in any category, serial numbers
9002 through 9879 inclusive, 9998, 60001 through 60005 inclusive,
60007, 60009, 60015, 60016, and 60024.
(d) Subject
Air Transport Association (ATA) of America Code 71, Powerplant.
(e) Unsafe Condition
This AD was prompted by reports that the sliding bushings in the
forward engine mount system were missing. The FAA is issuing this AD
to address redistribution of load/stress on the mount components,
which may decrease the component fatigue life; failure of the mount
structural components could result in the loss of the engine
attachment to the airframe.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Inspection and Corrective Action
Within 15 months or 750 flight hours, whichever occurs first,
after the effective date of this AD: Verify the proper installation
of the sliding bushings by doing an inspection (gap check) for
discrepancies of the front and aft engine mounts, in accordance with
paragraphs 2.B. through 2.F. of the Accomplishment Instructions of
the applicable service information specified in figure 1 to
paragraph (g) of this AD. If any discrepancy is found: Before
further flight, repair 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. Where a serial number is identified in more than one row
in figure 1 to paragraph (g) of this AD, the applicable service
information is identified based on the marketing designations in
paragraph 1.M., ``Equivalent Service Bulletins,'' of each service
information.
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(h) No Reporting Requirement
Although the service information identified in table 1 to
paragraph (g) of this AD specifies to submit certain information to
the manufacturer, this AD does not include that requirement.
(i) 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 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 TCCA; or Bombardier, Inc.'s TCCA DAO. If approved by
the DAO, the approval must include the DAO-authorized signature.
(j) Related Information
(1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) TCCA AD CF-2021-04, dated February 15, 2021; 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. FAA-2021-0560.
(2) For more information about this AD, contact Siddeeq Bacchus,
Aerospace Engineer, Mechanical Systems and Administrative Services
Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516-228-7362; fax 516-794-5531; email
[email protected].
(3) For service information identified in this AD, 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 [email protected]; internet https://www.bombardier.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 206-231-3195.
Issued on July 2, 2021.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021-14611 Filed 7-8-21; 8:45 am]
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