Proposed Rule2022-19232
Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
September 9, 2022
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for certain De Havilland Aircraft of Canada Limited Model DHC-8-400 series airplanes. This proposed AD was prompted by a report that electrical bonding jumpers had been installed on fuel scavenge lines even after the removal was required by previous AD rulemaking and that electrical bonding jumpers may have been installed in production or in service at other locations. This proposed AD would require an inspection for electrical bonding jumpers and brackets on the fuel scavenge and vent lines at specific wing locations, and if installed, removal or modification of those jumpers and brackets. This proposed AD would also require a records check to determine if certain maintenance tasks were performed and removal, modification, or rework if those tasks were performed. This proposed AD would also prohibit the use of earlier versions of certain maintenance tasks. The FAA is proposing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 87 Issue 174 (Friday, September 9, 2022)</title>
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[Federal Register Volume 87, Number 174 (Friday, September 9, 2022)]
[Proposed Rules]
[Pages 55322-55325]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2022-19232]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-1151; Project Identifier MCAI-2020-01603-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 certain De Havilland Aircraft of Canada Limited Model DHC-8-400
series airplanes. This proposed AD was prompted by a report that
electrical bonding jumpers had been installed on fuel scavenge lines
even after the removal was required by previous AD rulemaking and that
electrical bonding jumpers may have been installed in production or in
service at other locations. This proposed AD would require an
inspection for electrical bonding jumpers and brackets on the fuel
scavenge and vent lines at specific wing locations, and if installed,
removal or modification of those jumpers and brackets. This proposed AD
would also require a records check to determine if certain maintenance
tasks were performed and removal, modification, or rework if those
tasks were performed. This proposed AD would also prohibit the use of
earlier versions of certain maintenance tasks. 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 24,
2022.
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="http://regulations.gov">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.
<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 De
Havilland Aircraft of Canada Limited, Dash 8 Series Customer Response
Centre, 5800 Explorer Drive, Mississauga, Ontario, L4W 5K9, Canada;
North America (toll-free): 855-310-1013, Direct: 647-277-5820; email
<a href="/cdn-cgi/l/email-protection#9ce8f4f8dca0fdbcf4eef9faa1" http: dehavilland.com">dehavilland.com</a>">thd@<a href="http://dehavilland.com">dehavilland.com</a></a>; internet <a href="http://dehavilland.com">dehavilland.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 at <a href="http://regulations.gov">regulations.gov</a> by searching for
and locating Docket No. FAA-2022-1151; 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, the mandatory
continuing airworthiness information (MCAI), any comments received, and
other information. The street address for Docket Operations is listed
above.
FOR FURTHER INFORMATION CONTACT: Joseph Catanzaro, Aerospace Engineer,
Airframe and Propulsion Section, FAA, New York ACO Branch, 1600 Stewart
Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7366; email <a href="/cdn-cgi/l/email-protection#625b4f0314114f0c1b03010d4f010d11220403034c050d14"><span class="__cf_email__" data-cfemail="c3faeea2b5b0eeadbaa2a0aceea0acb083a5a2a2eda4acb5">[email protected]</span></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-2022-1151; Project Identifier
MCAI-2020-01603-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.
[[Page 55323]]
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="http://regulations.gov">regulations.gov</a>, 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
Joseph Catanzaro, Aerospace Engineer, Airframe and Propulsion Section,
FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY
11590; telephone 516-228-7366; email <a href="/cdn-cgi/l/email-protection#0d34206c7b7e2063746c6e62206e627e4d6b6c6c236a627b"><span class="__cf_email__" data-cfemail="e8d1c5899e9bc58691898b87c58b879ba88e8989c68f879e">[email protected]</span></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
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued TCCA AD CF-2020-01, dated January 14,
2020 (TCCA AD CF-2020-01) (also referred to after this as the MCAI), to
correct an unsafe condition for certain De Havilland Aircraft of Canada
Limited Model DHC-8-400, -401, and -402 airplanes. You may examine the
MCAI in the AD docket at <a href="http://regulations.gov">regulations.gov</a> by searching for and locating
Docket No. FAA-2022-1151.
This proposed AD was prompted by a report that electrical bonding
jumpers had been installed on fuel scavenge lines even after the
removal was required by TCCA AD CF-2010-31, dated September 3, 2010
(which corresponds to FAA AD 2011-13-06, Amendment 39-16729 (76 FR
37258, June 27, 2011) (AD 2011-13-06)). AD 2011-13-06 required
modifications to the fuel system to address a potential ignition source
within the fuel system. Subsequent investigation showed that electrical
bonding jumpers may have been installed in production or in service at
other locations on the fuel scavenge and vent lines. If installed,
these electrical bonding jumpers could affect the integrity of the fuel
scavenge and vent lines' electrical bonding paths. The FAA is proposing
this AD to address altered electrical bonding paths, which may lead to
lightning strike-induced ignition of the fuel tank. See the MCAI for
additional background information.
Since the electrical bonding jumpers may have been installed during
the accomplishment of certain maintenance tasks, this proposed AD would
prohibit the use of those maintenance tasks. Those prohibited tasks may
have been accomplished at any point after the airplane was produced.
For airplanes on which any of the prohibited tasks were accomplished,
this AD would require re-accomplishing the inspection for electrical
bonding jumpers and brackets on the fuel scavenge and vent lines at
specific wing locations and removal or modification of those bonding
jumpers and brackets; or rework using a method approved by the Manager,
New York ACO Branch, FAA; or TCCA; or De Havilland Aircraft of Canada
Limited's TCCA Design Approval Organization (DAO); depending on
configuration.
Related Service Information Under 1 CFR Part 51
De Havilland Aircraft of Canada Limited has issued Bombardier
Service Bulletins 84-28-29; and 84-28-30; both dated October 17, 2018;
which describe procedures for an inspection of certain wing stations in
the left and right wings for the presence of brackets and electrical
bonding jumpers on the fuel scavenge and vent lines, and if installed,
removal or modification of those electrical bonding jumpers and
brackets. These documents are distinct because they apply to different
airplane configurations.
De Havilland Aircraft of Canada Limited has also issued the
following Bombardier service information, which describes fuel system
limitations or airworthiness limitations for fuel tank systems. These
documents are distinct because they apply to different airplane
configurations.
<bullet> (Bombardier) Q400 Dash 8 Aircraft Maintenance Manual (AMM)
Temporary Revision (TR) 28-170, dated November 2, 2018.
<bullet> (Bombardier) Q400 Dash 8 AMM TR 28-171, dated November 2,
2018.
<bullet> (Bombardier) Q400 Dash 8 AMM TR 28-166, dated November 2,
2018.
<bullet> (Bombardier) Q400 Dash 8 AMM TR 28-167, dated November 2,
2018.
<bullet> (Bombardier) Q400 Dash 8 AMM TR 28-168, dated November 2,
2018.
<bullet> (Bombardier) Q400 Dash 8 AMM TR 28-169 dated November 2,
2018.
<bullet> (Bombardier) Q400 Dash 8 AMM TR 28-163, dated August 1,
2018
<bullet> (Bombardier) Q400 Dash 8 Maintenance Task Card Manual
(MTCM) Maintenance Task Card 000-28-520-704 (Config A01), Detailed
Inspection of the Teflon\TM\ Sleeve on the Fuel Tank Vent Line (LH),
Revision 43, Amendment 0001, dated August 1, 2018.
<bullet> (Bombardier) Q400 Dash 8 MTCM Maintenance Task Card 000-
28-620-704 (Config A01), Detailed Inspection of the Teflon\TM\ Sleeve
on the Fuel Tank Vent Line (RH), Revision 43, Amendment 0001, dated
August 1, 2018.
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. This proposed AD would
also require a records check to determine if certain maintenance tasks
were performed. This proposed AD would also prohibit the use of earlier
versions of certain maintenance tasks.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 53 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed AD:
[[Page 55324]]
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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Up to 94 work-hours x $85 per hour = Up to $7,990............ $0 $7,990 $423,470
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Estimated Costs of On-Condition Actions
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Labor cost Parts cost Cost per product
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Up to 40 work-hours x $85 per $100 Up to $3,500.
hour = Up to $3,400.
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The FAA has received no definitive data on which to base the cost
estimates for the on-condition rework specified in this proposed AD.
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) 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:
De Havilland Aircraft of Canada Limited (Type Certificate Previously
Held by Bombardier, Inc.): Docket No. FAA-2022-1151; Project
Identifier MCAI-2020-01603-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by October 24, 2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to De Havilland Aircraft of Canada Limited (Type
Certificate previously held by Bombardier, Inc.) Model DHC-8-400, -
401, and -402 airplanes, certificated in any category, having serial
numbers 4001, 4003, and subsequent.
(d) Subject
Air Transport Association (ATA) of America Code 28, Fuel System.
(e) Unsafe Condition
This AD was prompted by a report that electrical bonding jumpers
had been installed on fuel scavenge lines even after the removal was
required by previous AD rulemaking and electrical bonding jumpers
may have been installed in production or in service at other
locations. The FAA is issuing this AD to address altered electrical
bonding paths, which may lead to lightning strike-induced ignition
of the fuel tank.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Definition
For the purposes of this AD, ``prohibited tasks'' are identified
as any task identified in paragraph (j) of this AD and any procedure
or task that specifies fuel tank access using non-manufacturer-
approved procedures.
(h) Inspection and Modification
(1) For airplanes having serial numbers 4001, and 4003 through
4118 inclusive: Within 6,000 flight hours or 36 months after the
effective date of this AD, whichever occurs first, inspect wing
stations <plus-minus> 79.7, <plus-minus> 136.3, <plus-minus> 173.2,
and <plus-minus> 299.019 in the left and right wings for the
presence of brackets and electrical bonding jumpers installed on the
fuel scavenge and vent lines, in accordance with the Accomplishment
Instructions of Bombardier Service Bulletin 84-28-29, dated October
1, 2018. If installed, remove or modify the electrical bonding
jumpers and brackets as applicable, before further flight, in
accordance with the Accomplishment Instructions of Bombardier
Service Bulletin 84-28-29, dated October 17, 2018.
(2) For airplanes having serial numbers 4119 through 4597
inclusive: Within 6,000 flight hours or 36 months after the
effective date of this AD, whichever occurs first, inspect wing
stations <plus-minus> 79.7, <plus-minus> 136.3, and <plus-minus>
173.2 in the left and right wings for the presence of brackets and
electrical bonding jumpers on the fuel scavenge and vent lines, in
accordance with the Accomplishment Instructions of Bombardier
Service Bulletin 84-28-29, dated October 1, 2018. If installed,
remove or modify the electrical bonding jumpers and brackets as
applicable, before further flight, in accordance with the
Accomplishment Instructions of Bombardier Service Bulletin 84-28-30,
dated October 17, 2018.
(i) Verification and Rework for the Existing Maintenance Program
(1) For airplanes having serial numbers 4001, and 4003 through
4597 inclusive, on which the actions required by paragraph (h)(1) or
(2) of this AD have been done before the effective date of this AD:
Within 60 days after the effective date of this AD, review the
airplane maintenance records to confirm if any of the prohibited
tasks (defined in paragraph (g) of this AD) were accomplished during
or after compliance with paragraph (h)(1) or (2) of this AD. If any
of the
[[Page 55325]]
prohibited tasks were accomplished during or after compliance with
paragraph (h)(1) or (2) of this AD, or if it cannot be conclusively
confirmed that they were not accomplished during or after compliance
with paragraph (h)(1) or (2) of this AD: Within 6,000 flight hours
or 36 months after the effective date of this AD, whichever occurs
first, do the actions required by paragraph (h)(1) or (2) of this
AD, as applicable.
(2) For airplanes having serial numbers 4598 and subsequent,
with an airplane date of manufacture, as identified on the
identification plate of the airplane, dated before the effective
date of this AD: Within 60 days after the effective date of this AD,
review the airplane maintenance records to confirm if any of the
prohibited tasks (defined in paragraph (g) of this AD) were
accomplished on or after the airplane date of manufacture. If any of
the prohibited tasks were accomplished on or after the airplane date
of manufacture, or if it cannot be conclusively confirmed that they
were not accomplished on or after the airplane date of manufacture:
Within 6,000 flight hours or 36 months after the effective date of
this AD, whichever occurs first, obtain and follow instructions for
rework 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) Maintenance Task Prohibitions
For all airplanes: As of the effective date of this AD, comply
with the prohibitions specified in paragraphs (j)(1) and (2) of this
AD.
(1) It is prohibited to use the Bombardier aircraft maintenance
manual (AMM) tasks identified in paragraphs (j)(1)(i) through (vii)
of this AD, which are specified in the Bombardier Q400, PSM 1-84-2,
Revision 63, dated October 5, 2018, or earlier revisions of these
tasks. Temporary Revisions (TRs) including these AMM tasks, dated
November 2, 2018, or earlier, are also prohibited for use except as
specified in paragraph (j)(1)(i) through (vii) of this AD.
(i) Task 28-12-01-000-801, Removal of the Inboard Vent Line,
with the exception of (Bombardier) Q400 Dash 8 AMM TR 28-170, dated
November 2, 2018.
(ii) Task 28-12-01-400-801, Installation of the Inboard Vent
Line, with the exception of (Bombardier) Q400 Dash 8 AMM TR 28-171,
dated November 2, 2018.
(iii) Task 28-11-06-000-801, Removal of the Motive Flow Lines,
with the exception of (Bombardier) Q400 Dash 8 AMM TR 28-166, dated
November 2, 2018.
(iv) Task 28-11-06-400-801, Installation of the Motive Flow
Lines, with the exception of (Bombardier) Q400 Dash 8 AMM TR 28-167,
dated November 2, 2018.
(v) Task 28-11-16-000-801, Removal of the Scavenge Flow Lines,
with the exception of (Bombardier) Q400 Dash 8 AMM TR 28-168, dated
November 2, 2018.
(vi) Task 28-11-16-400-801, Installation of the Scavenge Flow
Lines, with the exception of (Bombardier) Q400 Dash 8 AMM TR 28-169
dated November 2, 2018.
(vii) Task 28-10-00-280-806, Detailed Inspection of the
Teflon\TM\ Sleeve on the Fuel Tank Vent Line, LH and RH (FSL
#284000-406), with the exception of (Bombardier) Q400 Dash 8 AMM TR
28-163, dated August 1, 2018.
(2) It is prohibited to use the Bombardier Q400 Dash 8
Maintenance Task Card Manual (MTCM) task cards identified in
paragraphs (j)(2)(i) and (ii) of this AD that are specified in the
Bombardier Q400 Dash 8 MTCM, PSM 1-84-7TC, Revision 43, dated May 5,
2018, or earlier revisions or amendments of these task cards. MTCM
task card revisions or amendments dated August 1, 2018, or earlier,
are also prohibited for use, except as specified in paragraphs
(j)(2)(i) and (ii) of this AD.
(i) Bombardier Q400 Dash 8 MTCM Maintenance Task Card 000-28-
520-704 (Config A01), Detailed Inspection of the Teflon\TM\ Sleeve
on the Fuel Tank Vent Line (LH), with the exception of (Bombardier)
Q400 Dash 8 MTCM Maintenance Task Card 000-28-520-704 (Config A01),
Detailed Inspection of the Teflon\TM\ Sleeve on the Fuel Tank Vent
Line (LH), Revision 43, Amendment 0001, dated August 1, 2018.
(ii) Bombardier Q400 Dash 8 MTCM Maintenance Task Card 000-28-
620-704 (Config A01), Detailed Inspection of the Teflon\TM\ Sleeve
on the Fuel Tank Vent Line (RH), with the exception of (Bombardier)
Q400 Dash 8 MTCM Maintenance Task Card 000-28-620-704 (Config A01),
Detailed Inspection of the Teflon\TM\ Sleeve on the Fuel Tank Vent
Line (RH), Revision 43, Amendment 0001, dated August 1, 2018.
(k) 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. 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 De Havilland Aircraft of Canada Limited's
TCCA DAO. If approved by the DAO, the approval must include the DAO-
authorized signature.
(l) Related Information
(1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) TCCA AD CF-2020-01, dated January 14, 2020, for related
information. This MCAI may be found in the AD docket at
<a href="http://regulations.gov">regulations.gov</a> by searching for and locating Docket No. FAA-2022-
1151.
(2) For more information about this AD, contact Joseph
Catanzaro, Aerospace Engineer, Airframe and Propulsion Section, FAA,
New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY
11590; telephone 516-228-7366; email <a href="/cdn-cgi/l/email-protection#f1c8dc908782dc9f8890929edc929e82b1979090df969e87"><span class="__cf_email__" data-cfemail="84bda9e5f2f7a9eafde5e7eba9e7ebf7c4e2e5e5aae3ebf2">[email protected]</span></a>.
(3) For service information identified in this AD, contact De
Havilland Aircraft of Canada Limited, Dash 8 Series Customer
Response Centre, 5800 Explorer Drive, Mississauga, Ontario, L4W 5K9,
Canada; North America (toll-free): 855-310-1013, Direct: 647-277-
5820; email <a href="/cdn-cgi/l/email-protection#64100c00245805440c16010259" http: dehavilland.com">dehavilland.com</a>">thd@<a href="http://dehavilland.com">dehavilland.com</a></a>; internet <a href="http://dehavilland.com">dehavilland.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 August 31, 2022.
Christina Underwood,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2022-19232 Filed 9-8-22; 8:45 am]
BILLING CODE 4910-13-P
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