Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes, 71594-71597 [2021-27295]
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71594
Federal Register / Vol. 86, No. 240 / Friday, December 17, 2021 / Proposed Rules
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
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:
■
Airbus SAS: Docket No. FAA–2021–1062;
Project Identifier MCAI–2021–00886–T.
(a) Comments Due Date
The FAA must receive comments on this
airworthiness directive (AD) by January 31,
2022.
(b) Affected ADs
This AD affects AD 2018–19–17,
Amendment 39–19417 (83 FR 48207,
September 24, 2018) (AD 2018–19–17).
(c) Applicability
This AD applies to all Airbus SAS Model
A300 B2–1C, B2K–3C, B2–203, B4–2C, B4–
103, and B4–203 airplanes, certificated in
any category.
(d) Subject
Air Transport Association (ATA) of
America Code 05, Time Limits/Maintenance
Checks.
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(e) Unsafe Condition
This AD was prompted by a determination
that new or more restrictive airworthiness
limitations for pylon maintenance are
necessary. The FAA is issuing this AD to
address fatigue cracking, damage, and
corrosion in principal structural elements;
such fatigue cracking, damage, and corrosion
could result in reduced structural integrity of
the airplane.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Requirements
Except as specified in paragraph (h) of this
AD: Comply with all required actions and
compliance times specified in, and in
accordance with, European Union Aviation
Safety Agency (EASA) AD 2021–0181, dated
July 30, 2021 (EASA AD 2021–0181).
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17:38 Dec 16, 2021
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(h) Exceptions to EASA AD 2021–0181
(1) Where EASA AD 2021–0181 refers to its
effective date, this AD requires using the
effective date of this AD.
(2) The requirements specified in
paragraphs (1) and (2) of EASA AD 2021–
0181 do not apply to this AD.
(3) Paragraph (3) of EASA AD 2021–0181
specifies revising ‘‘the approved AMP’’
within 12 months after its effective date, but
this AD requires revising the existing
maintenance or inspection program, as
applicable, within 90 days after the effective
date of this AD.
(4) The initial compliance time for doing
the tasks specified in paragraph (3) of EASA
AD 2021–0181 is at the applicable
‘‘associated thresholds’’ as incorporated by
the requirements of paragraph (3) of EASA
AD 2021–0181, or within 90 days after the
effective date of this AD, whichever occurs
later.
(5) The provisions specified in paragraph
(4) of EASA AD 2021–0181 do not apply to
this AD.
(6) The ‘‘Remarks’’ section of EASA AD
2021–0181 does not apply to this AD.
(i) Provisions for Alternative Actions and
Intervals
After the existing maintenance or
inspection program has been revised as
required by paragraph (g) of this AD, no
alternative actions (e.g., inspections) and
intervals are allowed unless they are
approved as specified in the provisions of the
‘‘Ref. Publications’’ section of EASA AD
2021–0181.
(j) Terminating Action for AD 2018–19–17
Accomplishing the actions required by this
AD terminates the corresponding
requirements of AD 2018–19–17, for the tasks
identified in the service information referred
to in EASA AD 2021–0181 only.
(k) Additional AD Provisions
The following provisions also apply to this
AD:
(1) Alternative Methods of Compliance
(AMOCs): The Manager, Large Aircraft
Section, 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 responsible Flight
Standards Office, as appropriate. If sending
information directly to the Large Aircraft
Section, International Validation Branch,
send it to the attention of the person
identified in paragraph (l)(2) of this AD.
Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov. 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.
(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, Large Aircraft Section,
International Validation Branch, FAA; or
EASA; or Airbus SAS’s EASA Design
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Sfmt 4702
Organization Approval (DOA). If approved by
the DOA, the approval must include the
DOA-authorized signature.
(3) Required for Compliance (RC): Except
as required by paragraph (k)(2) of this AD, if
any service information contains procedures
or tests that are identified as RC, those
procedures and tests must be done to comply
with this AD; any procedures or tests that are
not identified as RC are recommended. Those
procedures and tests that are not identified
as RC may be deviated from using accepted
methods in accordance with the operator’s
maintenance or inspection program without
obtaining approval of an AMOC, provided
the procedures and tests identified as RC can
be done and the airplane can be put back in
an airworthy condition. Any substitutions or
changes to procedures or tests identified as
RC require approval of an AMOC.
(l) Related Information
(1) For EASA AD 2021–0181, 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
EASA AD 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 206–231–3195. This
material may be found in the AD docket at
https://www.regulations.gov by searching for
and locating Docket No. FAA–2021–1062.
(2) For more information about this AD,
contact Dan Rodina, Aerospace Engineer,
Large Aircraft Section, FAA, International
Validation Branch, 2200 South 216th St., Des
Moines, WA 98198; telephone and fax 206–
231–3225; email dan.rodina@faa.gov.
Issued on December 2, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021–27286 Filed 12–16–21; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2021–1068; Project
Identifier MCAI–2021–00383–T]
RIN 2120–AA64
Airworthiness Directives; De Havilland
Aircraft of Canada Limited (Type
Certificate Previously Held by
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 all
SUMMARY:
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Federal Register / Vol. 86, No. 240 / Friday, December 17, 2021 / Proposed Rules
De Havilland Aircraft of Canada Limited
Model DHC–8–401 and –402 airplanes.
This proposed AD was prompted by
reports of bleed air leaks in the wing
box area and failure of the leak
detection shroud. This proposed AD
would require removing and inspecting
the affected V-band coupling and check
valve seals, doing corrective actions if
necessary, and replacing the coupling
and seals with a redesigned assembly.
The FAA is proposing this AD to
address the unsafe condition on these
products.
The FAA must receive comments
on this proposed AD by January 31,
2022.
DATES:
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 De Havilland
Aircraft of Canada Limited, Q-Series
Technical Help Desk, 123 Garratt
Boulevard, Toronto, Ontario M3K 1Y5,
Canada; telephone 416–375–4000; fax
416–375–4539; email thd@
dehavilland.com; internet https://
dehavilland.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.
ADDRESSES:
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Examining the AD Docket
You may examine the AD docket at
https://www.regulations.gov by
searching for and locating Docket No.
FAA–2021–1068; 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:
Elizabeth Dowling, Aerospace Engineer,
Mechanical Systems and Administrative
Services Section, FAA, New York ACO
Branch, 1600 Stewart Avenue, Suite
410, Westbury, NY 11590; telephone
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17:38 Dec 16, 2021
Jkt 256001
516–228–7300; 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–2021–1068; Project Identifier
MCAI–2021–00383–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.
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 Elizabeth Dowling,
Aerospace Engineer, Mechanical
Systems and Administrative Services
Section, FAA, New York ACO Branch,
1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516–
228–7300; 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.
Background
Transport Canada Civil Aviation
(TCCA), which is the aviation authority
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71595
for Canada, has issued TCCA AD CF–
2021–11, dated March 29, 2021 (TCCA
AD CF–2021–11) (also referred to after
this as the Mandatory Continuing
Airworthiness Information, or the
MCAI), to correct an unsafe condition
for all De Havilland Aircraft of Canada
Limited Model DHC–8–401 and –402
airplanes. You may examine the MCAI
in the AD docket at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2021–
1068.
This proposed AD was prompted by
multiple in-service reports of bleed air
leaks in the wing box area occurring as
a result of damaged check valve seals in
the wing bleed air check valve
installation, and of a failure of the
nearby leak detection shroud. The FAA
is proposing this AD to address the
possibility of undetected hot engine
bleed air being directed onto aircraft
structure, the main landing gear (MLG)
emergency release cable, and the static
air temperature (SAT) sensor, which
could cause the main landing gear
emergency release cable to malfunction.
See the MCAI for additional background
information.
Related Service Information Under 1
CFR Part 51
De Havilland Aircraft of Canada
Limited has issued Service Bulletin 84–
36–06, dated December 15, 2020. This
service information describes
procedures for removing the affected Vband coupling and check valve seals,
doing a visual inspection of the
coupling covers and surrounding area
for damage due to bleed air leakage, and
replacing the coupling and seals with a
redesigned assembly.
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.
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Federal Register / Vol. 86, No. 240 / Friday, December 17, 2021 / Proposed Rules
Proposed AD Requirements in This
NPRM
the service information already
described.
This proposed AD would require
accomplishing the actions specified in
Costs of Compliance
The FAA estimates that this AD, if
adopted as proposed, would affect 82
airplanes of U.S. registry. The FAA
estimates the following costs to comply
with this proposed AD:
ESTIMATED COSTS FOR REQUIRED ACTIONS
Labor cost
Parts cost
Cost per
product
Cost on U.S.
operators
4 work-hours × $85 per hour = $340 ..........................................................................................
$75
$415
$34,030
The FAA estimates the following
costs to do any necessary coupling cover
replacement 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 on-condition action:
ESTIMATED COSTS OF ON-CONDITION ACTION
Labor cost
Parts cost
Cost per
product
1 work-hour × $85 per hour = $85 ..........................................................................................................................
$5
$90
The FAA has received no definitive
data on which to base the cost estimates
for correcting damage in the area
surrounding the coupling covers.
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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:
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17:38 Dec 16, 2021
Jkt 256001
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
(2) Will not affect intrastate aviation
in Alaska, and
(3) Will not have a significant
economic impact, positive or negative,
on a substantial number of small entities
under the criteria of the Regulatory
Flexibility Act.
(b) Affected ADs
List of Subjects in 14 CFR Part 39
Air Transport Association (ATA) of
America Code 36, Pneumatic.
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.
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive:
■
De Havilland Aircraft of Canada Limited
(Type Certificate Previously Held by
Bombardier, Inc.): Docket No. FAA–
2021–1068; Project Identifier MCAI–
2021–00383–T.
(a) Comments Due Date
The FAA must receive comments on this
airworthiness directive (AD) by January 31,
2022.
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Fmt 4702
Sfmt 4702
This AD applies to all De Havilland
Aircraft of Canada Limited (Type Certificate
Previously Held by Bombardier, Inc.) Model
DHC–8–401 and –402 airplanes, certificated
in any category.
(d) Subject
(e) Unsafe Condition
This AD was prompted by reports of bleed
air leaks in the wing box area and failure of
the leak detection shroud. The FAA is
issuing this AD to address the possibility of
undetected hot engine bleed air being
directed onto aircraft structure, the main
landing gear (MLG) emergency release cable,
and the static air temperature (SAT) sensor,
which could cause the main landing gear
emergency release cable to malfunction.
(f) Compliance
■
§ 39.13
None.
(c) Applicability
Comply with this AD within the
compliance times specified, unless already
done.
(g) Required Actions
Within 48 months or 8,000 flight hours,
whichever occurs first, from the effective
date of this AD: Remove the affected V-band
coupling and check valve seals, do a visual
inspection for damage to the coupling covers
and surrounding area, and replace the
coupling and seals with a redesigned
assembly, in accordance with the
Accomplishment Instructions, paragraph
3.B., of de Havilland Service Bulletin 84–36–
06, dated December 15, 2020.
(1) If any damage to a coupling cover is
found, replace the coupling cover before
further flight in accordance with the
Accomplishment Instructions of de
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Federal Register / Vol. 86, No. 240 / Friday, December 17, 2021 / Proposed Rules
Havilland Service Bulletin 84–36–06, dated
December 15, 2020.
(2) If any damage to the surrounding area
is found, before further flight, accomplish
corrective actions in accordance with the
procedures specified in paragraph (i)(2) of
this AD.
BILLING CODE 4910–13–P
As of the effective date of this AD, no
person may install a V-band coupling, part
number (P/N) DSC361–250, or check valve
seal, P/N MS35769–71, in the center wing
front spar area of any airplane.
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
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(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 Transport Canada Civil Aviation
(TCCA); or De Havilland Aircraft of Canada
Limited’s TCCA Design Approval
Organization (DAO). If approved by the DAO,
the approval must include the DAOauthorized signature.
(j) Related Information
(1) Refer to Mandatory Continuing
Airworthiness Information (MCAI) TCCA AD
CF–2021–11, dated March 29, 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–2021–1068.
(2) For more information about this AD,
contact Elizabeth Dowling, Aerospace
Engineer, Mechanical Systems and
Administrative Services Section, FAA, New
York ACO Branch, 1600 Stewart Avenue,
Suite 410, Westbury, NY 11590; telephone
516–228–7300; fax 516–794–5531; email 9avs-nyaco-cos@faa.gov.
(3) For service information identified in
this AD, contact De Havilland Aircraft of
Canada Limited, Q-Series Technical Help
Desk, 123 Garratt Boulevard, Toronto,
Ontario M3K 1Y5, Canada; telephone 416–
375–4000; fax 416–375–4539; email thd@
dehavilland.com; internet https://
dehavilland.com. You may view this service
information at the FAA, Airworthiness
Products Section, Operational Safety Branch,
2200 South 216th St., Des Moines, WA. For
17:38 Dec 16, 2021
Jkt 256001
Issued on December 6, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021–27295 Filed 12–16–21; 8:45 am]
(h) Parts Installation Prohibition
VerDate Sep<11>2014
information on the availability of this
material at the FAA, call 206–231–3195.
14 CFR Part 71
[Docket No. FAA–2021–0941; Airspace
Docket No. 21–ASO–31]
RIN 2120–AA66
Proposed Amendment of Class D,
Class E, and Establishment of Class E
Airspace; Atlanta, GA Area
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
This action proposes to
amend Class D airspace, Class E surface
airspace, Class E airspace extending
upward from 700 feet above the surface,
and establish Class E Airspace
Designated as an Extension to a Class D
Surface Area in the Atlanta, GA area.
This action would replace the Atlanta
VORTAC (Very High Frequency
Omnidirectional Range Collocated
Tactical Air Navigation) with the term
Point of Origin. This action would
update several airport names and
geographic coordinates. This action
would also make an editorial change
replacing the term Airport/Facility
Directory with the term Chart
Supplement in the legal descriptions of
associated Class D and E airspace.
Controlled airspace is necessary for the
safety and management of instrument
flight rules (IFR) operations in the area.
DATES: Comments must be received on
or before January 31, 2022.
ADDRESSES: Send comments on this
proposal to: The U.S. Department of
Transportation, Docket Operations, 1200
New Jersey Avenue SE, West Building
Ground Floor, Room W12–140,
Washington, DC 20590–0001;
Telephone: (800) 647–5527, or (202)
366–9826. You must identify the Docket
No. FAA–2021–0941; Airspace Docket
No. 21–ASO–31 at the beginning of your
comments. You may also submit
comments through the internet at
https://www.regulations.gov.
FAA Order JO 7400.11F, Airspace
Designations and Reporting Points, and
subsequent amendments can be viewed
SUMMARY:
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71597
online at https://www.faa.gov/air_
traffic/publications/. For further
information, you can contact the
Airspace Policy Group, Federal Aviation
Administration, 800 Independence
Avenue SW, Washington, DC 20591;
Telephone: (202) 267–8783. FAA Order
JO 7400.11F is also available for
inspection at the National Archives and
Records Administration (NARA). For
information on the availability of FAA
Order JO 7400.11F at NARA, email
fr.inspection@nara.gov or go to https://
www.archives.gov/federal-register/cfr/
ibr-locations.html.
FOR FURTHER INFORMATION CONTACT: John
Goodson, Operations Support Group,
Eastern Service Center, Federal Aviation
Administration, 1701 Columbia Avenue,
College Park, GA 30337; Telephone
(404) 305–5966.
SUPPLEMENTARY INFORMATION:
Authority for This Rulemaking
The FAA’s authority to issue rules
regarding aviation safety is found in
Title 49 of the United States Code.
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. This rulemaking is
promulgated under the authority
described in Subtitle VII, Part A,
Subpart I, Section 40103. Under that
section, the FAA is charged with
prescribing regulations to assign the use
of airspace necessary to ensure the
safety of aircraft and the efficient use of
airspace. This regulation is within the
scope of that authority, as it would
amend airspace in the Atlanta, GA area
to support IFR operations in the area.
Comments Invited
Interested persons are invited to
comment on this proposed rulemaking
by submitting such written data, views,
or arguments, as they may desire.
Comments that provide the factual basis
supporting the views and suggestions
presented are particularly helpful in
developing reasoned regulatory
decisions on the proposal. Comments
are specifically invited on the overall
regulatory, aeronautical, economic,
environmental, and energy-related
aspects of the proposal.
Communications should identify both
docket numbers (Docket No. FAA–
2021–0941 and Airspace Docket No. 21–
ASO–31) and be submitted in triplicate
to DOT Docket Operations (see
ADDRESSES section for the address and
phone number). You may also submit
comments through the internet at
https://www.regulations.gov.
Persons wishing the FAA to
acknowledge receipt of their comments
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]]>Agencies
[Federal Register Volume 86, Number 240 (Friday, December 17, 2021)]
[Proposed Rules]
[Pages 71594-71597]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-27295]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-1068; Project Identifier MCAI-2021-00383-T]
RIN 2120-AA64
Airworthiness Directives; De Havilland Aircraft of Canada Limited
(Type Certificate Previously Held by Bombardier, Inc.) Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for all
[[Page 71595]]
De Havilland Aircraft of Canada Limited Model DHC-8-401 and -402
airplanes. This proposed AD was prompted by reports of bleed air leaks
in the wing box area and failure of the leak detection shroud. This
proposed AD would require removing and inspecting the affected V-band
coupling and check valve seals, doing corrective actions if necessary,
and replacing the coupling and seals with a redesigned assembly. 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 January 31,
2022.
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 De
Havilland Aircraft of Canada Limited, Q-Series Technical Help Desk, 123
Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416-375-
4000; fax 416-375-4539; email [email protected]; internet https://dehavilland.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-2021-1068; 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: Elizabeth Dowling, Aerospace Engineer,
Mechanical Systems and Administrative Services Section, FAA, New York
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7300; 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-2021-1068; Project Identifier
MCAI-2021-00383-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.
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
Elizabeth Dowling, Aerospace Engineer, Mechanical Systems and
Administrative Services Section, FAA, New York ACO Branch, 1600 Stewart
Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7300; 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-2021-11, dated March 29,
2021 (TCCA AD CF-2021-11) (also referred to after this as the Mandatory
Continuing Airworthiness Information, or the MCAI), to correct an
unsafe condition for all De Havilland Aircraft of Canada Limited Model
DHC-8-401 and -402 airplanes. You may examine the MCAI in the AD docket
at https://www.regulations.gov by searching for and locating Docket No.
FAA-2021-1068.
This proposed AD was prompted by multiple in-service reports of
bleed air leaks in the wing box area occurring as a result of damaged
check valve seals in the wing bleed air check valve installation, and
of a failure of the nearby leak detection shroud. The FAA is proposing
this AD to address the possibility of undetected hot engine bleed air
being directed onto aircraft structure, the main landing gear (MLG)
emergency release cable, and the static air temperature (SAT) sensor,
which could cause the main landing gear emergency release cable to
malfunction. See the MCAI for additional background information.
Related Service Information Under 1 CFR Part 51
De Havilland Aircraft of Canada Limited has issued Service Bulletin
84-36-06, dated December 15, 2020. This service information describes
procedures for removing the affected V-band coupling and check valve
seals, doing a visual inspection of the coupling covers and surrounding
area for damage due to bleed air leakage, and replacing the coupling
and seals with a redesigned assembly.
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.
[[Page 71596]]
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 82 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed AD:
Estimated Costs for Required Actions
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Cost per Cost on U.S.
Labor cost Parts cost product operators
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4 work-hours x $85 per hour = $340........................... $75 $415 $34,030
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The FAA estimates the following costs to do any necessary coupling
cover replacement 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 on-condition action:
Estimated Costs of On-Condition Action
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Cost per
Labor cost Parts cost product
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1 work-hour x $85 per hour = $85...... $5 $90
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The FAA has received no definitive data on which to base the cost
estimates for correcting damage in the area surrounding the coupling
covers.
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,
(2) Will not affect intrastate aviation in Alaska, and
(3) Will 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:
De Havilland Aircraft of Canada Limited (Type Certificate Previously
Held by Bombardier, Inc.): Docket No. FAA-2021-1068; Project
Identifier MCAI-2021-00383-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by January 31, 2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all De Havilland Aircraft of Canada Limited
(Type Certificate Previously Held by Bombardier, Inc.) Model DHC-8-
401 and -402 airplanes, certificated in any category.
(d) Subject
Air Transport Association (ATA) of America Code 36, Pneumatic.
(e) Unsafe Condition
This AD was prompted by reports of bleed air leaks in the wing
box area and failure of the leak detection shroud. The FAA is
issuing this AD to address the possibility of undetected hot engine
bleed air being directed onto aircraft structure, the main landing
gear (MLG) emergency release cable, and the static air temperature
(SAT) sensor, which could cause the main landing gear emergency
release cable to malfunction.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
Within 48 months or 8,000 flight hours, whichever occurs first,
from the effective date of this AD: Remove the affected V-band
coupling and check valve seals, do a visual inspection for damage to
the coupling covers and surrounding area, and replace the coupling
and seals with a redesigned assembly, in accordance with the
Accomplishment Instructions, paragraph 3.B., of de Havilland Service
Bulletin 84-36-06, dated December 15, 2020.
(1) If any damage to a coupling cover is found, replace the
coupling cover before further flight in accordance with the
Accomplishment Instructions of de
[[Page 71597]]
Havilland Service Bulletin 84-36-06, dated December 15, 2020.
(2) If any damage to the surrounding area is found, before
further flight, accomplish corrective actions in accordance with the
procedures specified in paragraph (i)(2) of this AD.
(h) Parts Installation Prohibition
As of the effective date of this AD, no person may install a V-
band coupling, part number (P/N) DSC361-250, or check valve seal, P/
N MS35769-71, in the center wing front spar area of any airplane.
(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 Transport Canada Civil Aviation (TCCA); or De
Havilland Aircraft of Canada Limited's TCCA Design Approval
Organization (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-2021-11, dated March 29, 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-2021-1068.
(2) For more information about this AD, contact Elizabeth
Dowling, Aerospace Engineer, Mechanical Systems and Administrative
Services Section, FAA, New York ACO Branch, 1600 Stewart Avenue,
Suite 410, Westbury, NY 11590; telephone 516-228-7300; fax 516-794-
5531; email [email protected].
(3) For service information identified in this AD, contact De
Havilland Aircraft of Canada Limited, Q-Series Technical Help Desk,
123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone
416-375-4000; fax 416-375-4539; email [email protected]; internet
https://dehavilland.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 December 6, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-27295 Filed 12-16-21; 8:45 am]
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