Airworthiness Directives; Bombardier, Inc., Airplanes, 21268-21270 [2019-09807]
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21268
Federal Register / Vol. 84, No. 93 / Tuesday, May 14, 2019 / Proposed Rules
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2019–0322; Product
Identifier 2019–NM–039–AD]
RIN 2120–AA64
Airworthiness Directives; Bombardier,
Inc., Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
We propose to adopt a new
airworthiness directive (AD) for certain
Bombardier, Inc., Model DHC–8–400
series airplanes. This proposed AD was
prompted by reports of cracked elevator
power control unit (PCU) brackets on
the horizontal stabilizer rear spar and
cracking on the elevator front spar. This
proposed AD would require one-time
inspections for cracks and damage of the
elevator PCU brackets and surrounding
area, horizontal stabilizer rear spar, and
elevator front spar, and related
investigative and corrective actions if
necessary. We are proposing this AD to
address the unsafe condition on these
products.
SUMMARY:
We must receive comments on
this proposed AD by June 28, 2019.
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., QSeries Technical Help Desk, 123 Garratt
Boulevard, Toronto, Ontario M3K 1Y5,
Canada; telephone 416–375–4000; fax
416–375–4539; email thd.qseries@
aero.bombardier.com; internet https://
www.bombardier.com. You may view
this service information at the FAA,
Transport Standards Branch, 2200
South 216th St., Des Moines, WA. For
information on the availability of this
material at the FAA, call 206–231–3195.
khammond on DSKBBV9HB2PROD with PROPOSALS
DATES:
VerDate Sep<11>2014
16:21 May 13, 2019
Jkt 247001
Examining the AD Docket
You may examine the AD docket on
the internet at https://www.regulations.
gov by searching for and locating Docket
No. FAA–2019–0322; 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 regulatory
evaluation, any comments received, and
other information. The street address for
Docket Operations (phone: 800–647–
5527) is listed above. Comments will be
available in the AD docket shortly after
receipt.
FOR FURTHER INFORMATION CONTACT:
Andrea Jimenez, Aerospace Engineer,
Airframe and Mechanical Systems
Section, FAA, New York ACO Branch,
1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516–
228–7330; fax 516–794–5531.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written
relevant data, views, or arguments about
this proposal. Send your comments to
an address listed under the ADDRESSES
section. Include ‘‘Docket No. FAA–
2019–0322; Product Identifier 2019–
NM–039–AD’’ at the beginning of your
comments. We specifically invite
comments on the overall regulatory,
economic, environmental, and energy
aspects of this NPRM. We will consider
all comments received by the closing
date and may amend this NPRM
because of those comments.
We will post all comments we
receive, without change, to https://
www.regulations.gov, including any
personal information you provide. We
will also post a report summarizing each
substantive verbal contact we receive
about this NPRM.
Discussion
Transport Canada Civil Aviation
(TCCA), which is the aviation authority
for Canada, has issued Canadian AD
CF–2018–34, dated December 17, 2018
(referred to after this as the Mandatory
Continuing Airworthiness Information,
or ‘‘the MCAI’’), to correct an unsafe
condition for certain Bombardier, Inc.,
Model DHC–8–400 series airplanes. The
MCAI states:
There have been five in-service reports of
cracked elevator power control unit (PCU)
brackets on the horizontal stabilizer rear spar,
and two reports of cracking on the elevator
front spar. In one case, the PCU bracket
cracking led to detachment of the bracket
during pushback. An investigation found that
the force-fight loads induced by elevator
PCUs not rigged to the required tolerance is
the common factor in cracking of both the
elevator PCU bracket and of the elevator front
PO 00000
Frm 00013
Fmt 4702
Sfmt 4702
spar. A secondary contributor to the elevator
PCU bracket cracking is the bracket flange
preload that may be induced during
production installation. Failure of an elevator
PCU bracket or progression of the elevator
front spar cracking into two segments may
cause the affected elevator to jam. Failure of
an elevator bracket on both elevators, or
progression of elevator front spar cracking
into two segments on both elevators, could
cause a loss of aeroplane pitch control.
This [Canadian] AD mandates a one-time
inspection of the elevator PCU brackets, the
horizontal stabilizer rear spar and elevator
front spar with reporting of inspection
findings. Any brackets found cracked are to
be replaced with new brackets with
improved strength. For any spar found
cracked, obtain instructions to repair the spar
from Bombardier and repair the spar
accordingly. Additional corrective action
may be considered depending on the results
of the inspections findings.
You may examine the MCAI in the
AD docket on the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2019–
0322.
Related Service Information Under 1
CFR Part 51
Bombardier has issued Service
Bulletin 84–55–09, dated June 7, 2018.
This service information describes
procedures for one-time detailed visual
and fluorescent penetrant inspections
for cracks and damage of the elevator
PCU brackets (including the
surrounding area), horizontal stabilizer
rear spar, and elevator front spar, and
related investigative and corrective
actions if necessary. The related
investigative action is an eddy current
inspection for cracking of certain mating
holes of the horizontal stabilizer rear
spar. Corrective actions include
replacement of the elevator PCU
brackets and repair of the horizontal
stabilizer rear spar and elevator front
spar.
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 our
bilateral agreement with the State of
Design Authority, we have been notified
of the unsafe condition described in the
MCAI and service information
referenced above. We are proposing this
AD because we evaluated all the
relevant information and determined
the unsafe condition described
previously is likely to exist or develop
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21269
Federal Register / Vol. 84, No. 93 / Tuesday, May 14, 2019 / Proposed Rules
on other products of the same type
design.
the service information described
previously. This proposed AD also
would require sending the inspection
results to Bombardier.
Proposed Requirements of This NPRM
This proposed AD would require
accomplishing the actions specified in
Costs of Compliance
We estimate that this proposed AD
affects 54 airplanes of U.S. registry. We
estimate 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
13 work-hours × $85 per hour = $1,105 .....................................................................................
$0
$1,105
$59,670
* Table does not include estimated costs for reporting.
We estimate that it would take about
1 work-hour per product to comply with
the proposed reporting requirement in
this proposed AD. The average labor
rate is $85 per hour. Based on these
figures, we estimate the cost of reporting
the inspection results on U.S. operators
to be $4,590, or $85 per product.
We estimate the following costs to do
any necessary on-condition actions that
would be required based on the results
of any required actions. We have no way
of determining the number of aircraft
that might need these on-condition
actions:
ESTIMATED COSTS OF ON-CONDITION ACTIONS
Labor cost
Parts cost
Cost per
product
18 work-hours × $85 per hour = $1,530 .................................................................................................................
$0
$1,530
Paperwork Reduction Act
A federal agency may not conduct or
sponsor, and a person is not required to
respond to, nor shall a person be subject
to penalty for failure to comply with a
collection of information subject to the
requirements of the Paperwork
Reduction Act unless that collection of
information displays a current valid
OMB control number. The control
number for the collection of information
required by this NPRM is 2120–0056.
The paperwork cost associated with this
NPRM has been detailed in the Costs of
Compliance section of this document
and includes time for reviewing
instructions, as well as completing and
reviewing the collection of information.
Therefore, all reporting associated with
this NPRM is mandatory. Comments
concerning the accuracy of this burden
and suggestions for reducing the burden
should be directed to the FAA at 800
Independence Ave. SW, Washington,
DC 20591, ATTN: Information
Collection Clearance Officer, AES–200.
khammond on DSKBBV9HB2PROD with PROPOSALS
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.
We are issuing this rulemaking under
the authority described in Subtitle VII,
Part A, Subpart III, Section 44701:
VerDate Sep<11>2014
16:21 May 13, 2019
Jkt 247001
‘‘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.
This proposed AD is issued in
accordance with authority delegated by
the Executive Director, Aircraft
Certification Service, as authorized by
FAA Order 8000.51C. In accordance
with that order, issuance of ADs is
normally a function of the Compliance
and Airworthiness Division, but during
this transition period, the Executive
Director has delegated the authority to
issue ADs applicable to transport
category airplanes and associated
appliances to the Director of the System
Oversight Division.
Regulatory Findings
We 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:
PO 00000
Frm 00014
Fmt 4702
Sfmt 4702
1. Is not a ‘‘significant regulatory
action’’ under Executive Order 12866;
2. Is not a ‘‘significant rule’’ under the
DOT Regulatory Policies and Procedures
(44 FR 11034, February 26, 1979);
3. Will not affect intrastate aviation in
Alaska; and
4. 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
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 (AD):
■
Bombardier, Inc.: Docket No. FAA–2019–
0322; Product Identifier 2019–NM–039–
AD.
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21270
Federal Register / Vol. 84, No. 93 / Tuesday, May 14, 2019 / Proposed Rules
(a) Comments Due Date
We must receive comments by June 28,
2019.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Bombardier, Inc.,
Model DHC–8–400, –401, and –402
airplanes, certificated in any category, serial
numbers 4001 through 4580 inclusive.
(d) Subject
Air Transport Association (ATA) of
America Code 27, Flight controls.
(e) Reason
This AD was prompted by reports of
cracked elevator power control unit (PCU)
brackets on the horizontal stabilizer rear spar
and cracking on the elevator front spar. We
are issuing this AD to address this condition,
which, if not detected and corrected, may
cause failure of an elevator PCU bracket or
fracture the front spar into two segments;
either structural failure may cause a jam in
one elevator or a loss of airplane pitch
control if both elevators are affected.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
khammond on DSKBBV9HB2PROD with PROPOSALS
(g) Inspections
No earlier than 7,500 total accumulated
flight hours, but before accumulating 8,000
flight hours after the effective date of this AD:
Perform detailed visual and fluorescent
penetrant inspections for cracks and damage
of the elevator PCU brackets, horizontal
stabilizer rear spar, and elevator front spar,
in accordance with the Accomplishment
Instructions of Bombardier Service Bulletin
84–55–09, dated June 7, 2018.
(1) If any crack is detected on any elevator
PCU bracket, and no crack or damage is
found on either spar: Before further flight,
replace the elevator PCU bracket with a new
bracket, and do all related investigative and
corrective actions, in accordance with the
Accomplishment Instructions of Bombardier
Service Bulletin 84–55–09, dated June 7,
2018.
(2) If any crack or damage is detected on
any horizontal stabilizer rear spar or elevator
front spar: 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.
(h) Reporting
At the applicable time specified in
paragraph (h)(1) or (h)(2) of this AD: Report
the results of the inspections required by
paragraph (g) of this AD to the Bombardier
CMDB Focal by fax 1–416–375–4538 or email
at cmdb.requests@aero.bombardier.com, in
accordance with the instructions of
Bombardier Service Bulletin 84–55–09, dated
June 7, 2018. If operators have reported
findings as part of obtaining any corrective
actions approved by Bombardier, Inc.’s TCCA
VerDate Sep<11>2014
16:21 May 13, 2019
Jkt 247001
DAO, operators are not required to report
those findings as specified in this paragraph.
(1) If the inspections were done on or after
the effective date of this AD: Submit the
report within 30 days after the inspections.
(2) If the inspections were done before the
effective date of this AD: Submit the report
within 30 days after the effective date of this
AD.
(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 local
Flight Standards District 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 local
flight standards district office/certificate
holding district office.
(2) Contacting the Manufacturer: For any
requirement in this AD to obtain corrective
actions from a manufacturer, the action 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.
(3) Reporting Requirements: A federal
agency may not conduct or sponsor, and a
person is not required to respond to, nor
shall a person be subject to a penalty for
failure to comply with a collection of
information subject to the requirements of
the Paperwork Reduction Act unless that
collection of information displays a current
valid OMB Control Number. The OMB
Control Number for this information
collection is 2120–0056. Public reporting for
this collection of information is estimated to
be approximately 1 hour per response,
including the time for reviewing instructions,
completing and reviewing the collection of
information. All responses to this collection
of information are mandatory. Comments
concerning the accuracy of this burden and
suggestions for reducing the burden should
be directed to the FAA at: 800 Independence
Ave. SW, Washington, DC 20591, Attn:
Information Collection Clearance Officer,
AES–200.
(j) Related Information
(1) Refer to Mandatory Continuing
Airworthiness Information (MCAI) Canadian
AD CF–2018–34, dated December 17, 2018,
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–2019–0322.
(2) For more information about this AD,
contact Andrea Jimenez, Aerospace Engineer,
Airframe and Mechanical Systems Section,
PO 00000
Frm 00015
Fmt 4702
Sfmt 4702
FAA, New York ACO Branch, 1600 Stewart
Avenue, Suite 410, Westbury, NY 11590;
telephone 516–228–7330; fax 516–794–5531.
(3) For service information identified in
this AD, contact Bombardier, Inc., Q-Series
Technical Help Desk, 123 Garratt Boulevard,
Toronto, Ontario M3K 1Y5, Canada;
telephone 416–375–4000; fax 416–375–4539;
email thd.qseries@aero.bombardier.com;
internet https://www.bombardier.com. You
may view this service information at the
FAA, Transport Standards Branch, 2200
South 216th St., Des Moines, WA. For
information on the availability of this
material at the FAA, call 206–231–3195.
Issued in Des Moines, Washington, on May
2, 2019.
Michael Kaszycki,
Acting Director, System Oversight Division,
Aircraft Certification Service.
[FR Doc. 2019–09807 Filed 5–13–19; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2019–0324; Product
Identifier 2019–NM–031–AD]
RIN 2120–AA64
Airworthiness Directives; Fokker
Services B.V. Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
We propose to adopt a new
airworthiness directive (AD) for all
Fokker Services B.V. Model F28 Mark
0070 and 0100 airplanes. This proposed
AD was prompted by reports of cracks
on certain nose landing gear (NLG)
turning tubes resulting from incorrectly
applied repairs. This proposed AD
would require removing the affected
parts and replacing them with
serviceable parts. We are proposing this
AD to address the unsafe condition on
these products.
DATES: We must receive comments on
this proposed AD by June 28, 2019.
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.
SUMMARY:
E:\FR\FM\14MYP1.SGM
14MYP1
Agencies
[Federal Register Volume 84, Number 93 (Tuesday, May 14, 2019)]
[Proposed Rules]
[Pages 21268-21270]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2019-09807]
[[Page 21268]]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2019-0322; Product Identifier 2019-NM-039-AD]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc., Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: We propose to adopt a new airworthiness directive (AD) for
certain Bombardier, Inc., Model DHC-8-400 series airplanes. This
proposed AD was prompted by reports of cracked elevator power control
unit (PCU) brackets on the horizontal stabilizer rear spar and cracking
on the elevator front spar. This proposed AD would require one-time
inspections for cracks and damage of the elevator PCU brackets and
surrounding area, horizontal stabilizer rear spar, and elevator front
spar, and related investigative and corrective actions if necessary. We
are proposing this AD to address the unsafe condition on these
products.
DATES: We must receive comments on this proposed AD by June 28, 2019.
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., 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://www.bombardier.com. You may view this service information at the FAA,
Transport Standards Branch, 2200 South 216th St., Des Moines, WA. For
information on the availability of this material at the FAA, call 206-
231-3195.
Examining the AD Docket
You may examine the AD docket on the internet at https://www.regulations. gov by searching for and locating Docket No. FAA-2019-
0322; 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 regulatory evaluation, any comments received, and other
information. The street address for Docket Operations (phone: 800-647-
5527) is listed above. Comments will be available in the AD docket
shortly after receipt.
FOR FURTHER INFORMATION CONTACT: Andrea Jimenez, Aerospace Engineer,
Airframe and Mechanical Systems Section, FAA, New York ACO Branch, 1600
Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7330;
fax 516-794-5531.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under the ADDRESSES section. Include ``Docket No. FAA-2019-0322;
Product Identifier 2019-NM-039-AD'' at the beginning of your comments.
We specifically invite comments on the overall regulatory, economic,
environmental, and energy aspects of this NPRM. We will consider all
comments received by the closing date and may amend this NPRM because
of those comments.
We will post all comments we receive, without change, to https://www.regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this NPRM.
Discussion
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian AD CF-2018-34, dated December
17, 2018 (referred to after this as the Mandatory Continuing
Airworthiness Information, or ``the MCAI''), to correct an unsafe
condition for certain Bombardier, Inc., Model DHC-8-400 series
airplanes. The MCAI states:
There have been five in-service reports of cracked elevator
power control unit (PCU) brackets on the horizontal stabilizer rear
spar, and two reports of cracking on the elevator front spar. In one
case, the PCU bracket cracking led to detachment of the bracket
during pushback. An investigation found that the force-fight loads
induced by elevator PCUs not rigged to the required tolerance is the
common factor in cracking of both the elevator PCU bracket and of
the elevator front spar. A secondary contributor to the elevator PCU
bracket cracking is the bracket flange preload that may be induced
during production installation. Failure of an elevator PCU bracket
or progression of the elevator front spar cracking into two segments
may cause the affected elevator to jam. Failure of an elevator
bracket on both elevators, or progression of elevator front spar
cracking into two segments on both elevators, could cause a loss of
aeroplane pitch control.
This [Canadian] AD mandates a one-time inspection of the
elevator PCU brackets, the horizontal stabilizer rear spar and
elevator front spar with reporting of inspection findings. Any
brackets found cracked are to be replaced with new brackets with
improved strength. For any spar found cracked, obtain instructions
to repair the spar from Bombardier and repair the spar accordingly.
Additional corrective action may be considered depending on the
results of the inspections findings.
You may examine the MCAI in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2019-
0322.
Related Service Information Under 1 CFR Part 51
Bombardier has issued Service Bulletin 84-55-09, dated June 7,
2018. This service information describes procedures for one-time
detailed visual and fluorescent penetrant inspections for cracks and
damage of the elevator PCU brackets (including the surrounding area),
horizontal stabilizer rear spar, and elevator front spar, and related
investigative and corrective actions if necessary. The related
investigative action is an eddy current inspection for cracking of
certain mating holes of the horizontal stabilizer rear spar. Corrective
actions include replacement of the elevator PCU brackets and repair of
the horizontal stabilizer rear spar and elevator front spar.
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 our bilateral agreement with the State of Design Authority, we have
been notified of the unsafe condition described in the MCAI and service
information referenced above. We are proposing this AD because we
evaluated all the relevant information and determined the unsafe
condition described previously is likely to exist or develop
[[Page 21269]]
on other products of the same type design.
Proposed Requirements of This NPRM
This proposed AD would require accomplishing the actions specified
in the service information described previously. This proposed AD also
would require sending the inspection results to Bombardier.
Costs of Compliance
We estimate that this proposed AD affects 54 airplanes of U.S.
registry. We estimate 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
----------------------------------------------------------------------------------------------------------------
13 work-hours x $85 per hour = $1,105........................ $0 $1,105 $59,670
----------------------------------------------------------------------------------------------------------------
* Table does not include estimated costs for reporting.
We estimate that it would take about 1 work-hour per product to
comply with the proposed reporting requirement in this proposed AD. The
average labor rate is $85 per hour. Based on these figures, we estimate
the cost of reporting the inspection results on U.S. operators to be
$4,590, or $85 per product.
We estimate the following costs to do any necessary on-condition
actions that would be required based on the results of any required
actions. We have no way of determining the number of aircraft that
might need these on-condition actions:
Estimated Costs of On-Condition Actions
------------------------------------------------------------------------
Cost per
Labor cost Parts cost product
------------------------------------------------------------------------
18 work-hours x $85 per hour = $1,530. $0 $1,530
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Paperwork Reduction Act
A federal agency may not conduct or sponsor, and a person is not
required to respond to, nor shall a person be subject to penalty for
failure to comply with a collection of information subject to the
requirements of the Paperwork Reduction Act unless that collection of
information displays a current valid OMB control number. The control
number for the collection of information required by this NPRM is 2120-
0056. The paperwork cost associated with this NPRM has been detailed in
the Costs of Compliance section of this document and includes time for
reviewing instructions, as well as completing and reviewing the
collection of information. Therefore, all reporting associated with
this NPRM is mandatory. Comments concerning the accuracy of this burden
and suggestions for reducing the burden should be directed to the FAA
at 800 Independence Ave. SW, Washington, DC 20591, ATTN: Information
Collection Clearance Officer, AES-200.
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.
We are 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.
This proposed AD is issued in accordance with authority delegated
by the Executive Director, Aircraft Certification Service, as
authorized by FAA Order 8000.51C. In accordance with that order,
issuance of ADs is normally a function of the Compliance and
Airworthiness Division, but during this transition period, the
Executive Director has delegated the authority to issue ADs applicable
to transport category airplanes and associated appliances to the
Director of the System Oversight Division.
Regulatory Findings
We 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. Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979);
3. Will not affect intrastate aviation in Alaska; and
4. 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
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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 (AD):
Bombardier, Inc.: Docket No. FAA-2019-0322; Product Identifier 2019-
NM-039-AD.
[[Page 21270]]
(a) Comments Due Date
We must receive comments by June 28, 2019.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Bombardier, Inc., Model DHC-8-400, -401, and
-402 airplanes, certificated in any category, serial numbers 4001
through 4580 inclusive.
(d) Subject
Air Transport Association (ATA) of America Code 27, Flight
controls.
(e) Reason
This AD was prompted by reports of cracked elevator power
control unit (PCU) brackets on the horizontal stabilizer rear spar
and cracking on the elevator front spar. We are issuing this AD to
address this condition, which, if not detected and corrected, may
cause failure of an elevator PCU bracket or fracture the front spar
into two segments; either structural failure may cause a jam in one
elevator or a loss of airplane pitch control if both elevators are
affected.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Inspections
No earlier than 7,500 total accumulated flight hours, but before
accumulating 8,000 flight hours after the effective date of this AD:
Perform detailed visual and fluorescent penetrant inspections for
cracks and damage of the elevator PCU brackets, horizontal
stabilizer rear spar, and elevator front spar, in accordance with
the Accomplishment Instructions of Bombardier Service Bulletin 84-
55-09, dated June 7, 2018.
(1) If any crack is detected on any elevator PCU bracket, and no
crack or damage is found on either spar: Before further flight,
replace the elevator PCU bracket with a new bracket, and do all
related investigative and corrective actions, in accordance with the
Accomplishment Instructions of Bombardier Service Bulletin 84-55-09,
dated June 7, 2018.
(2) If any crack or damage is detected on any horizontal
stabilizer rear spar or elevator front spar: 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.
(h) Reporting
At the applicable time specified in paragraph (h)(1) or (h)(2)
of this AD: Report the results of the inspections required by
paragraph (g) of this AD to the Bombardier CMDB Focal by fax 1-416-
375-4538 or email at [email protected], in
accordance with the instructions of Bombardier Service Bulletin 84-
55-09, dated June 7, 2018. If operators have reported findings as
part of obtaining any corrective actions approved by Bombardier,
Inc.'s TCCA DAO, operators are not required to report those findings
as specified in this paragraph.
(1) If the inspections were done on or after the effective date
of this AD: Submit the report within 30 days after the inspections.
(2) If the inspections were done before the effective date of
this AD: Submit the report within 30 days after the effective date
of this AD.
(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 local Flight Standards District 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
local flight standards district office/certificate holding district
office.
(2) Contacting the Manufacturer: For any requirement in this AD
to obtain corrective actions from a manufacturer, the action 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.
(3) Reporting Requirements: A federal agency may not conduct or
sponsor, and a person is not required to respond to, nor shall a
person be subject to a penalty for failure to comply with a
collection of information subject to the requirements of the
Paperwork Reduction Act unless that collection of information
displays a current valid OMB Control Number. The OMB Control Number
for this information collection is 2120-0056. Public reporting for
this collection of information is estimated to be approximately 1
hour per response, including the time for reviewing instructions,
completing and reviewing the collection of information. All
responses to this collection of information are mandatory. Comments
concerning the accuracy of this burden and suggestions for reducing
the burden should be directed to the FAA at: 800 Independence Ave.
SW, Washington, DC 20591, Attn: Information Collection Clearance
Officer, AES-200.
(j) Related Information
(1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) Canadian AD CF-2018-34, dated December 17, 2018, 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-2019-0322.
(2) For more information about this AD, contact Andrea Jimenez,
Aerospace Engineer, Airframe and Mechanical Systems Section, FAA,
New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY
11590; telephone 516-228-7330; fax 516-794-5531.
(3) For service information identified in this AD, contact
Bombardier, Inc., 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://www.bombardier.com. You may view this service information at
the FAA, Transport Standards Branch, 2200 South 216th St., Des
Moines, WA. For information on the availability of this material at
the FAA, call 206-231-3195.
Issued in Des Moines, Washington, on May 2, 2019.
Michael Kaszycki,
Acting Director, System Oversight Division, Aircraft Certification
Service.
[FR Doc. 2019-09807 Filed 5-13-19; 8:45 am]
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