[Federal Register Volume 78, Number 67 (Monday, April 8, 2013)]
[Proposed Rules]
[Pages 20844-20846]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2013-08048]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2013-0216; Directorate Identifier 2012-NM-206-AD]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc. Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: We propose to adopt a new airworthiness directive (AD) for
certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 &
440) airplanes. This proposed AD was prompted by a determination that
certain flap actuators require restoration by installing a redesigned
flap actuator inboard pinion seal. This proposed AD would require
revising the maintenance program by incorporating new airworthiness
limitation tasks. We are proposing this AD to prevent flap system
failure, and consequent reduced landing performance of the airplane.
DATES: We must receive comments on this proposed AD by May 23, 2013.
ADDRESSES: You may send comments by any of the following methods:
Federal eRulemaking Portal: Go to http://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: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE., Washington, DC, between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
For service information identified in this proposed AD, contact
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec
H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-7401; email
[email protected]; Internet http://www.bombardier.com. You
may review copies of the referenced service information at the FAA,
Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For
information on the availability of this material at the FAA, call 425-
227-1221.
Examining the AD Docket
You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Operations office
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains this proposed AD, the regulatory
evaluation, any comments received, and other information. The street
address for the Docket Operations office (telephone (800) 647-5527) is
in the ADDRESSES section. Comments will be available in the AD docket
shortly after receipt.
FOR FURTHER INFORMATION CONTACT: Luke Walker, Aerospace Engineer,
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury,
New York 11590; telephone (516) 228-7363; fax (516) 794-5531.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments about this proposed AD. Send your comments to an address
listed under the ADDRESSES section. Include ``Docket No. FAA-2013-0216;
Directorate Identifier 2012-NM-206-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this proposed AD. We
will consider all comments received by the closing date and may amend
this proposed AD based on those comments.
We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this proposed AD.
[[Page 20845]]
Discussion
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian Airworthiness Directive CF-
2012-26, dated October 30, 2012 (referred to after this as the
Mandatory Continuing Airworthiness Information, or ``the MCAI''), to
correct an unsafe condition for the specified products. The MCAI
states:
The CL-600-2B19 aeroplane flap actuator inboard pinion seal is
prone to leak which can cause internal contamination of the actuator
braking mechanism and subsequent actuator failure. This condition,
if not corrected, can cause flap system failure. In certain weather
and runway conditions, frequent flap system failures pose a safety
concern.
To improve the internal actuator sealing, the flap actuator
manufacturer has redesigned the inboard pinion seal. Transport
Canada Civil Aviation (TCCA) has been monitoring, through an
actuator sampling program, the performance of the flap system since
the introduction of actuators equipped with this new inboard pinion
seal. Based on this sampling program and recent flap reliability
data, TCCA is mandating a restoration task to install the redesigned
flap actuator inboard pinion seal on all applicable actuators.
The required action is revising the maintenance program by
incorporating two new airworthiness limitation tasks. The unsafe
condition is flap system failure, and consequent reduced control of the
airplane. You may obtain further information by examining the MCAI in
the AD docket.
Relevant Service Information
Bombardier Inc. has issued CL-600-2B19 Temporary Revision (TR) 2A-
48, dated July 6, 2012, to Appendix A--Certification Requirements, of
Part 2, Airworthiness Requirements, of the Bombardier CL-600-2B19
Maintenance Requirements Manual. The actions described in this service
information are intended to correct the unsafe condition identified in
the MCAI.
FAA's Determination and Requirements of This Proposed AD
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 pertinent information and determined an unsafe condition
exists and is likely to exist or develop on other products of the same
type design.
This AD requires revisions to certain operator maintenance
documents to include new actions. Compliance with these actions is
required by 14 CFR 91.403(c). For airplanes that have been previously
modified, altered, or repaired in the areas addressed by these actions,
the operator may not be able to accomplish the inspections described in
the revisions. In this situation, to comply with 14 CFR 91.403(c), the
operator must request approval for an alternative method of compliance
according to the procedures specified in paragraph (k) of this AD. The
request should include a description of changes to the required actions
that will ensure the continued damage tolerance of the affected
structure.
Differences Between This Proposed AD and the MCAI or Service
Information
Bombardier CL-600-2B19 TR 2A-48, dated July 6, 2012, to Appendix
A--Certification Requirements, of Part 2, Airworthiness Requirements,
of the Bombardier CL-600-219 Maintenance Requirements Manual, specifies
a task interval of 10,000 flight cycles or 144 months in the ``Task
Interval'' column, and a task interval of 10,000 flight cycles in the
``Task Description'' column. This proposed AD would require a task
interval of 10,000 flight cycles. This difference has been coordinated
with TCCA.
Costs of Compliance
Based on the service information, we estimate that this proposed AD
would affect about 573 products of U.S. registry. We also estimate that
it would take about 1 work-hour per product to comply with the basic
requirements of this proposed AD. The average labor rate is $85 per
work-hour. Based on these figures, we estimate the cost of the proposed
AD on U.S. operators to be $48,705, or $85 per product.
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.
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.
We prepared a regulatory evaluation of the estimated costs to
comply with this proposed AD and placed it in the AD docket.
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 AD:
Bombardier, Inc.: Docket No. FAA-2013-0216; Directorate
Identifier 2012-NM-206-AD.
(a) Comments Due Date
We must receive comments by May 23, 2013.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Bombardier, Inc. Model CL-600-2B19 (Regional
Jet Series 100 & 440)
[[Page 20846]]
airplanes, certificated in any category, equipped with Eaton flap
actuators having any part number (P/N) specified in paragraphs
(c)(1), (c)(2), and (c)(3) of this AD.
(1) P/N 601R93101-23/-25 (vendor P/N 852D100-23, -25).
(2) P/N 601R93103-23/-24 (vendor P/N 853D100-23, -24).
(3) P/N 601R93104-23/-24 (vendor P/N 854D100-23, -24).
(d) Subject
Air Transport Association (ATA) of America Code 27, Flight
controls.
(e) Reason
This AD was prompted by a determination that certain flap
actuators require restoration by installing a redesigned flap
actuator inboard pinion seal. We are issuing this AD to prevent flap
system failure, and consequent reduced control of the airplane.
(f) Compliance
You are responsible for having the actions required by this AD
performed within the compliance times specified, unless the actions
have already been done.
(g) Maintenance Program Revision
Within 30 days after the effective date of this AD, revise the
maintenance program to incorporate Tasks C27-50-111-15 and C27-50-
111-17 as specified in Bombardier CL-600-2B19 Temporary Revision
(TR) 2A-48, dated July 6, 2012, to Appendix A--Certification
Requirements, of Part 2, Airworthiness Requirements, of the
Bombardier CL-600-2B19 Maintenance Requirements Manual (MRM), except
as specified in paragraph (j) of this AD. The initial compliance
times for the tasks are specified in paragraph (h) of this AD.
Note 1 to paragraph (g) of this AD: The maintenance program
revision required by paragraph (g) of this AD may be done by
inserting a copy of Bombardier CL-600-2B19 TR 2A-48, dated July 6,
2012, into Appendix A--Certification Requirements, of Part 2,
Airworthiness Requirements, of the Bombardier CL-600-2B19 MRM. When
this TR has been included in general revisions of the MRM, the
general revisions may be inserted in the MRM, provided the relevant
information in the general revision is identical to that in
Bombardier CL-600-2B19 TR 2A-48, dated July 6, 2012.
(h) Initial Task Compliance Times
For the inboard and outboard flap actuators identified in
Bombardier CL-600-2B19 TR 2A-48, dated July 6, 2012, to Appendix A--
Certification Requirements, of Part 2, Airworthiness Requirements,
of the Bombardier CL-600-2B19 MRM, the initial compliance times for
the tasks specified in Bombardier CL-600-2B19 TR 2A-48, dated July
6, 2012, are at the applicable times specified in paragraphs (h)(1)
through (h)(4) of this AD.
(1) For flap actuators that have accumulated less than 6,000
flight cycles as of the effective date of this AD, before the
accumulation of 10,000 flight cycles on the flap actuator.
(2) For flap actuators that have accumulated 6,000 or more
flight cycles but less than 10,000 flight cycles as of the effective
date of this AD, within 4,000 flight cycles after the effective date
of this AD, but no later than 12,000 flight cycles on the flap
actuator.
(3) For flap actuators that have accumulated 10,000 or more
flight cycles but less than or equal to 12,000 flight cycles as of
the effective date of this AD, within 2,000 flight cycles after the
effective date of this AD, but no later than 13,000 flight cycles on
the flap actuator.
(4) For flap actuators that have accumulated more than 12,000
flight cycles as of the effective date of this AD, within 1,000
flight cycles after the effective date of this AD.
(i) Repetitive Compliance Time
Where Bombardier CL-600-2B19 TR 2A-48, dated July 6, 2012, to
Appendix A--Certification Requirements, of Part 2, Airworthiness
Requirements, of the Bombardier CL-600-2B19 MRM, specifies a task
interval of 10,000 flight cycles or 144 months, the task interval is
10,000 flight cycles.
(j) No Alternative Actions and Intervals
After accomplishing the revision required by paragraph (g) of
this AD, no alternative actions (e.g., inspections) or intervals may
be used unless the actions or intervals are approved as an
alternative method of compliance (AMOC) in accordance with the
procedures specified in paragraph (k) of this AD.
(k) Other FAA AD Provisions
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, New
York Aircraft Certification Office (ACO), ANE-170, 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 ACO, send it to Program Manager, Continuing
Operational Safety, FAA, New York ACO, 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. The AMOC approval letter must specifically
reference this AD.
(2) Airworthy Product: For any requirement in this AD to obtain
corrective actions from a manufacturer or other source, use these
actions if they are FAA-approved. Corrective actions are considered
FAA-approved if they are approved by the State of Design Authority
(or their delegated agent). You are required to assure the product
is airworthy before it is returned to service.
(l) Related Information
(1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) Canadian Airworthiness Directive CF-2012-26, dated October
30, 2012; and Bombardier CL-600-2B19 TR 2A-48, dated July 6, 2012,
to Appendix A--Certification Requirements, of Part 2, Airworthiness
Requirements, of the Bombardier CL-600-2B19 MRM; for related
information.
(2) For Bombardier, Inc. service information identified in this
AD, contact Bombardier, Inc., 400 C[ocirc]te-Vertu Road West,
Dorval, Qu[eacute]bec H4S 1Y9, Canada; telephone 514-855-5000; fax
514-855-7401; email [email protected]; Internet http://www.bombardier.com. You may review copies of the referenced service
information at the FAA, Transport Airplane Directorate, 1601 Lind
Avenue SW., Renton, WA. For information on the availability of this
material at the FAA, call 425-227-1221.
Issued in Renton, Washington, on March 28, 2013.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2013-08048 Filed 4-5-13; 8:45 am]
BILLING CODE 4910-13-P