Airworthiness Directives; Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes, 18024-18029 [2011-6630]
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Federal Register / Vol. 76, No. 63 / Friday, April 1, 2011 / Rules and Regulations
products identified in this rulemaking
action.
Regulatory Findings
This AD will not have federalism
implications under Executive Order
13132. This AD will 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 that this AD:
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
(2) Is not a ‘‘significant rule’’ under
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.
Adoption of the Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 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):
■
2011–07–04 The Boeing Company:
Amendment 39–16641; Docket No.
FAA–2010–0958; Directorate Identifier
2010–NM–188–AD.
Effective Date
(a) This AD is effective May 6, 2011.
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Affected ADs
(b) None.
Applicability
(c) This AD applies to The Boeing
Company Model DC–9–14, DC–9–15, DC–9–
15F, DC–9–21, DC–9–31, DC–9–32, DC–9–32
(VC–9C), DC–9–32F, DC–9–32F (C–9A), DC–
9–32F (C9–B), DC–9–33F, DC–9–34, DC–9–
34F, DC–9–41, and DC–9–51 airplanes,
certificated in any category; as identified in
Boeing Service Bulletin DC9–28–217,
Revision 1, dated August 12, 2010.
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16:52 Mar 31, 2011
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Subject
(d) Joint Aircraft System Component
(JASC)/Air Transport Association (ATA) of
America Code 28: Fuel.
Unsafe Condition
(e) This AD was prompted by fuel system
reviews conducted by the manufacturer. We
are issuing this AD to prevent the potential
of ignition sources inside fuel tanks, which
in combination with flammable fuel vapors,
could result in fuel tank explosions and
consequent loss of the airplane.
Compliance
(f) Comply with this AD within the
compliance times specified, unless already
done.
Installation
(g) Within 60 months after the effective
date of this AD: Install new in-line fuses for
the fuel level float switch and new in-line
fuses for the pressure switch, as applicable;
and change the wiring; on the left and right
wing forward spars, center wing forward
spar, forward auxiliary fuel tank, and aft
auxiliary fuel tank, as applicable; in
accordance with the Accomplishment
Instructions of Boeing Service Bulletin DC9–
28–217, Revision 1, dated August 12, 2010.
this service information under 5 U.S.C.
552(a) and 1 CFR part 51.
(2) For service information identified in
this AD, contact Boeing Commercial
Airplanes, Attention: Data & Services
Management, 3855 Lakewood Boulevard, MC
D800–0019, Long Beach, California 90846–
0001; telephone 206–544–5000, extension 2;
fax 206–766–5683; e-mail
dse.boecom@boeing.com; Internet https://
www.myboeingfleet.com.
(3) You may review copies of the service
information at the FAA, Transport Airplane
Directorate, 1601 Lind Avenue, SW., Renton,
Washington. For information on the
availability of this material at the FAA, call
425–227–1221.
(4) You may also review copies of the
service information that is incorporated by
reference at the National Archives and
Records Administration (NARA). For
information on the availability of this
material at an NARA facility, call 202–741–
6030, or go to https://www.archives.gov/
federal_register/code_of_federal_regulations/
ibr_locations.html.
Issued in Renton, Washington, on March
14, 2011.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
Credit for Actions Accomplished in
Accordance With Previous Service
Information
(h) Actions done before the effective date
of this AD in accordance with Boeing Service
Bulletin DC9–28–217, dated December 1,
2009, are acceptable for compliance with the
requirements of paragraph (g) of this AD.
[FR Doc. 2011–6633 Filed 3–31–11; 8:45 am]
Alternative Methods of Compliance
(AMOCs)
(i)(1) The Manager, Los Angeles Aircraft
Certification Office (ACO), 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 ACO, send it to the
attention of the person identified in the
Related Information section of this AD.
(2) Before using any approved AMOC,
notify your appropriate principal inspector or
lacking a principal inspector, the manager of
the local flight standards district office/
certificate holding district office.
14 CFR Part 39
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
[Docket No. FAA–2010–0436; Directorate
Identifier 2009–NM–230–AD; Amendment
39–16643; AD 2011–07–06]
RIN 2120–AA64
Airworthiness Directives; Bombardier,
Inc. Model CL–600–2B19 (Regional Jet
Series 100 & 440) Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
AGENCY:
Related Information
(j) For more information about this AD,
contact Samuel Lee, Aerospace Engineer,
Propulsion Branch, ANM–140L, FAA, Los
Angeles ACO, 3960 Paramount Boulevard,
Lakewood, California 90712–4137; phone:
562–627–5262; fax: 562–627–5210; e-mail:
Samuel.Lee@faa.gov.
We are adopting a new
airworthiness directive (AD) for the
products listed above. This AD results
from mandatory continuing
airworthiness information (MCAI)
originated by an aviation authority of
another country to identify and correct
an unsafe condition on an aviation
product. The MCAI describes the unsafe
condition as:
Material Incorporated by Reference
(k) You must use Boeing Service Bulletin
DC9–28–217, Revision 1, dated August 12,
2010, to do the actions required by this AD,
unless the AD specifies otherwise.
(1) The Director of the Federal Register
approved the incorporation by reference of
* * * There have recently been several inservice occurrences that have highlighted the
inability of the existing [wing anti-ice]
system to detect a low-heat condition in the
wing leading edge at all times, with the
potential consequence of unannunciated
asymmetric ice build-up on the wing. * * *
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SUMMARY:
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Federal Register / Vol. 76, No. 63 / Friday, April 1, 2011 / Rules and Regulations
Such a condition, in combination with
maneuvers close to stick shaker activation,
could possibly result in reduced
controllability of the aircraft.
*
*
*
*
*
We are issuing this AD to require
actions to correct the unsafe condition
on these products.
DATES: This AD becomes effective May
6, 2011.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in this AD
as of May 6, 2011.
ADDRESSES: You may examine the AD
docket on the Internet at https://
www.regulations.gov or in person at the
U.S. Department of Transportation,
Docket Operations, M–30, West
Building Ground Floor, Room W12–140,
1200 New Jersey Avenue, SE.,
Washington, DC.
FOR FURTHER INFORMATION CONTACT:
Wing Chan, Aerospace Engineer,
Avionics and Flight Test Branch, ANE–
172, FAA, New York Aircraft
Certification Office (ACO), 1600 Stewart
Avenue, Suite 410, Westbury, New York
11590; telephone (516) 228–7311; fax
(516) 794–5531.
SUPPLEMENTARY INFORMATION:
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Discussion
We issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would
apply to the specified products. That
NPRM was published in the Federal
Register on May 10, 2010 (75 FR 25788).
That NPRM proposed to correct an
unsafe condition for the specified
products. The MCAI states:
At present, the Wing Anti-Ice System
(WAIS) sufficient heat switches/sensors on
CL–600–2B19 aircraft are located at the
inboard end of each wing and require a
simultaneous low-pressure signal to generate
a L or R WING A/ICE amber caution.
However, there have recently been several inservice occurrences that have highlighted the
inability of the existing system to detect a
low-heat condition in the wing leading edge
at all times, with the potential consequence
of unannunciated asymmetric ice build-up
on the wing. These have included partial
failure of several piccolo ducts [ref:
Airworthiness Directive (AD) CF–2008–30]
and partial (not fully closed or open) failure
of a modulating and shut-off valve, the latter
resulting in unannunciated asymmetric ice
build-up on the wing leading edge. Such a
condition, in combination with maneuvers
close to stick shaker activation, could
possibly result in reduced controllability of
the aircraft.
This directive mandates:
(a) Revision of the Airplane Flight Manual
(AFM) to notify the flight crew that,
following installation and activation of the
low-heat detection switches, certain WAIS
mode selection changes may result in a two-
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minute inhibition of the wing anti-ice
message, if posted;
(b) Revision of the approved maintenance
schedule to include one revised and three
new functional checks that are required
following activation of the low-heat detection
switches;
(c) Replacement of the Data Concentrator
Units (DCUs) with DCUs incorporating a
software update that caters for the new
outboard low-heat detection switches and
generates the appropriate anti-ice message for
the flight crew when a low-heat condition is
detected;
Note: Although not related to this
directive, the software update also corrects
the sampling rate of two previously noncompliant Flight Data Recorder (FDR)
parameters, normal acceleration and pitch
attitude.
(d) Installation of the low-heat detection
switches in the wing outboard leading edges,
the wing A/ICE box assembly and associated
wires; and
(e) Activation of the low-heat detection
switches.
You may obtain further information
by examining the MCAI in the AD
docket.
Comments
We gave the public the opportunity to
participate in developing this AD. We
considered the comments received.
Support for the NPRM
Air Line Pilots Association,
International (ALPA) stated that it
agrees that all reasonable steps should
be taken to avoid reduced controllability
while operating in icing conditions.
ALPA stated that it supports the NPRM,
but also encouraged the FAA to
implement it as soon as possible to
enable full compliance before winter.
Requests To Revise Costs of Compliance
Limited Brands and Air Wisconsin
requested that we revise the costs of
compliance. Limited Brands disagreed
with the estimate of 21 work-hours and
the cost of $1,785 per product to comply
with the proposed AD. Limited Brands
stated that the modification of the data
concentrator unit (DCU), as required by
paragraph (g)(3) of the NPRM, costs
$1,200, the installation required by
paragraph (g)(4) of the NPRM costs
$3,300, and additional labor costs are
$25,000, which brings the actual cost to
$30,000 per airplane. Air Wisconsin
stated it calculated that the costs are
$600 for each of the two upgrades,
$2,570 for other required parts, and 70
work-hours—for a total of $9,720 per
airplane.
We agree to revise the Costs of
Compliance section of this AD. We have
based our cost estimate on the service
information and information from the
manufacturer, and have calculated the
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costs for complying with the AD as
follows: 2 work-hours for revising the
Limitations section of the AFM and the
ALI; 3 work-hours for replacing the
DCU; 72 work-hours for installing the
switches, assemblies, and wires; and 4
work-hours for activating the switches.
We also calculated $4,500 for parts. We
revised the Costs of Compliance section
of this AD accordingly.
Request To Clarify the Modification to
the Wing Leading Edges
Air Wisconsin requested clarification
regarding the modification of the wing
leading edges. Air Wisconsin noted that
the effectivity is against the airplane
models but Bombardier Service Bulletin
601R–30–031, Revision D, dated
February 3, 2010, specifies modifying
the leading edges, which was not
addressed in the NPRM. Air Wisconsin
noted that, if a non-modified spare
leading edge is installed, there could be
cause for confusion.
We agree to provide clarification. The
actions required by paragraph (g)(4) of
this AD include modifying the leading
edges.
Request To Revise the Compliance
Time for Requirements of Paragraph
(g)(2) of the NPRM for Task C30–10–
141–01
Mesa Airlines requested that we
clarify the requirements of paragraph
(g)(2) of the NPRM for Task C30–10–
141–01. Mesa Airlines stated that on
page 2A–11 of Appendix A of Part 2 of
the Bombardier CL–600–2B19
Maintenance Requirement Manual
(MRM), Task C30–10–141–10 provides
the functional check of the wing anti-ice
standby overheat switches and
overheat/sufficient heat sensors and
associated circuitry with an interval of
6,000 flight hours. Mesa Airlines stated
that page 1–2–35 of Section 2 of Part 1
of the Bombardier CL–600–2B19
Maintenance Review Board (MRB)
Report, Task 30–12–12–01, ‘‘Functional
check of the wing anti-ice overheat
sensors (duplicate Certification
Maintenance Requirements (CMR) C30–
10–141–01),’’ provides a compliance
time of 4,000 flight hours. Mesa Airlines
also stated that page 1–1–6 of Section 1
of Part 1 of the Bombardier CL–600–
2B19 MRM states the following in Note
15: ‘‘This task has a duplicate CMR
requirement. Refer to Maintenance
Requirements Manual, CSP–A–053, Part
2, Appendix A, for identification of
specific requirements regarding
handling of CMRs. Where the CMR
interval for an MRB report task is more
restrictive, the CMR interval takes
precedence. When the interval for an
MRB report task is more restrictive, the
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MRB report task interval will take
precedence.’’
Mesa Airlines asked that we clarify
the NPRM as to which interval needs to
be tracked—6,000 flight hours or 4,000
flight hours.
We agree to clarify. The intent of the
AD is to introduce the CMR tasks that
are associated with the new switches.
CMR Task C30–10–141–01 was
inadvertently mandated in Canadian AD
CF–2009–37 and was carried over into
the NPRM. The MRB group is currently
looking into harmonizing these task
intervals. Therefore, we have removed
CMR Task C30–10–141–01 from Table 1
of this final rule.
Request To Clarify Required Service
Information
Air Wisconsin requested that we
clarify the name of the service
information in paragraph (g)(2) of the
NPRM. Air Wisconsin stated that
paragraph (g)(2) of the NPRM refers to
‘‘Airworthiness Limitations
Instructions.’’ Air Wisconsin asked if it
should instead be ‘‘Bombardier CL–600–
2B19 Maintenance Requirements
Manual (MRM), Appendix A,
Certification Maintenance Requirements
(CMR).’’
We agree with the commenter’s
suggested service information citation.
We have changed paragraph (g)(2) of
this final rule accordingly.
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Request To Revise Compliance Time in
Table 1 of the NPRM
Air Wisconsin requested that we
revise the compliance time in Table 1 of
the NPRM. Air Wisconsin stated that
under the column heading ‘‘Initial
Compliance Time (whichever occurs
later)’’ for Tasks C30–10–141–03, C30–
10–141–05, and C30–10–141–07 in
Table 1, the compliance time under that
column heading should read ‘‘Before the
accumulation of 6,000 flight hours, or if
previously accomplished, within 6,000
flight hours since last accomplishment,
whichever comes first.’’ The commenter
did not provide a reason for these
suggestions.
We agree with the commenter’s
suggested change. The intent of Table 1
is to establish the initial compliance
times for accomplishment of the
specified tasks because only repetitive
intervals are specified in Bombardier TR
2A–46, dated July 24, 2009. However,
we acknowledge that some operators
might have previously accomplished the
initial tasks and could be doing those
tasks repetitively. The commenter’s
suggested language would provide
credit for earlier accomplishment of the
tasks for those operators. We have
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Jkt 223001
revised Table 1 to include the language
suggested by the commenter.
Request To Remove Note 3 of the NPRM
Air Wisconsin requested to remove
Note 3 from the NPRM. Air Wisconsin
stated that the inspection requirements
in Bombardier Temporary Revision (TR)
2A–46, dated July 24, 2009, are already
contained in the general revision of the
MRM, specifically, Revision 9, dated
December 10, 2009. Air Wisconsin
stated that this updated general revision
makes Note 3 irrelevant and, therefore,
the note should be removed.
We disagree. The note is necessary to
keep operators in compliance when the
TR is incorporated into general
revisions. Operators that have a revision
of the MRM that contains the
information in Bombardier TR 2A–46
are in compliance. We have not changed
the final rule in regard to this issue.
Request To Remove Note 4 of the NPRM
Air Wisconsin requested we remove
Note 4 from the NPRM. Air Wisconsin
stated this note is not pertinent to the
content of the NPRM because Task 30–
11–41–820–801 is not part of
Bombardier Service Bulletin 601R–30–
031, Revision D, dated February 3, 2010,
and should be removed.
We disagree. Task 30–11–41–820–801
is pertinent to this AD because it is part
of the Bombardier CRJ Series Regional
Jet Aircraft Maintenance Manual, and it
provides guidance to correct alignment
of the piccolo ducts since a small
number of cases have been reported in
which they were found to have been
installed in the opposing wing, resulting
in the incorrect orientation of the bleed
holes. One of the requirements of this
AD is to install the low-heat direction
switches in the wing outboard leading
edges. This task requires particular
attention to the correct alignment of the
piccolo ducts after the installation of the
low-heat detection switches. We have
not changed the final rule in regard to
this issue.
Request To Revise Compliance Time for
Requirements of Paragraph (g)(5) of the
NPRM
Air Wisconsin, Mesaba Airlines, and
Mesa Airlines requested that we revise
the compliance time for activating the
outboard low-heat detection switches,
as proposed by paragraph (g)(5) of the
NPRM. Air Wisconsin requested that
incorporating the procedures specified
in Part F of the Accomplishment
Instructions of Bombardier Service
Bulletin 601R–30–031, Revision D,
dated February 3, 2010, should be
performed at the next heavy
maintenance visit, provided that parts
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(kits) are available. Air Wisconsin stated
that it has scheduled these tasks to be
completed by the end of December
2011. Mesaba Airlines requested that
the compliance time in paragraph (g) of
the NPRM be revised from 11 months to
5,000 flight hours after the effective date
of this AD. Mesaba Airlines stated that
the 11-month compliance time for the
modification will result in extended
downtime and cause interruptions.
Mesa Airlines stated that it agrees with
Mesaba Airlines’ request to change the
compliance time from months to hours.
We disagree. In developing the
compliance time for this AD action, we
considered not only the safety
implications of the identified unsafe
condition, but the average utilization
rate of the affected fleet, the practical
aspects of an orderly modification of the
fleet during regular maintenance
periods, the availability of required
parts, and the time necessary for the
rulemaking process. The proposed
compliance time, which is based on the
effective date of the final rule, was
determined to be appropriate. However,
under the provisions of paragraph (h) of
the final rule, we will consider requests
for approval of an extension of the
compliance time if sufficient data are
submitted to substantiate that the
change would provide an acceptable
level of safety. We have not changed the
final rule in regard to this issue.
Clarification of Changes to This AD
We have revised paragraph (e) of this
AD by removing some text and retaining
only the text that applies to the Reason
section of this AD.
In addition, we have removed
paragraph (h)(3) of the NPRM because
this AD does not contain a reporting
requirement.
Conclusion
We reviewed the available data,
including the comments received, and
determined that air safety and the
public interest require adopting the AD
with the changes described previously.
We determined that these changes will
not increase the economic burden on
any operator or increase the scope of the
AD.
Differences Between This AD and the
MCAI or Service Information
We have reviewed the MCAI and
related service information and, in
general, agree with their substance. But
we might have found it necessary to use
different words from those in the MCAI
to ensure the AD is clear for U.S.
operators and is enforceable. In making
these changes, we do not intend to differ
substantively from the information
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provided in the MCAI and related
service information.
We might also have required different
actions in this AD from those in the
MCAI in order to follow our FAA
policies. Any such differences are
highlighted in a NOTE within the AD.
Costs of Compliance
We estimate that this AD affects 599
products of U.S. registry. We also
estimate that it takes about 81 workhours per product to comply with the
basic requirements of this AD. The
average labor rate is $85 per work-hour.
Parts cost $4,500 per product. Based on
these figures, we estimate the cost of
this AD to the U.S. operators to be
$6,819,615, or $11,385 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.
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Regulatory Findings
We determined that this AD will not
have federalism implications under
Executive Order 13132. This AD will
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 AD:
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); 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.
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Jkt 223001
We prepared a regulatory evaluation
of the estimated costs to comply with
this AD and placed it in the AD docket.
Examining the AD Docket
You may examine the AD docket on
the Internet at https://
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 the NPRM, 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.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
Adoption of the Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 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 AD:
■
2011–07–06 Bombardier, Inc.: Amendment
39–16643. Docket No. FAA–2010–0436;
Directorate Identifier 2009–NM–230–AD.
Effective Date
(a) This airworthiness directive (AD)
becomes effective May 6, 2011.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Bombardier, Inc.
Model CL–600–2B19 (Regional Jet Series 100
& 440) airplanes, certificated in any category,
serial numbers 7003 through 8101 inclusive.
Note 1: This AD requires revisions to
certain operator maintenance documents to
include new inspections. Compliance with
these inspections is required by 14 CFR
91.403(c). For airplanes that have been
previously modified, altered, or repaired in
the areas addressed by these inspections, 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 paragraph (h)(1) of this AD. The request
should include a description of changes to
the required inspections that will ensure the
continued operational safety of the airplane.
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Subject
(d) Air Transport Association (ATA) of
America Code 30 and 31: Ice and rain
protection, and instruments, respectively.
Reason
(e) The mandatory continuing
airworthiness information (MCAI) states:
* * * There have recently been several inservice occurrences that have highlighted the
inability of the existing [wing anti-ice]
system to detect a low-heat condition in the
wing leading edge at all times, with the
potential consequence of unannunciated
asymmetric ice build-up on the wing. * * *
Such a condition, in combination with
maneuvers close to stick shaker activation,
could possibly result in reduced
controllability of the aircraft.
*
*
*
*
*
Compliance
(f) You are responsible for having the
actions required by this AD performed within
the compliance times specified, unless the
actions have already been done.
Actions
(g) Do the following actions.
(1) Within 30 days after the effective date
of this AD, revise the Limitations and Normal
Procedures sections of the Canadair Regional
Jet Airplane Flight Manual (AFM), CSP A–
012, to include the information in Canadair
(Bombardier) Temporary Revision (TR) RJ/
164–2, dated May 14, 2009. This TR
introduces procedures for operation in icing
conditions. Operate the airplane according to
the limitations and procedures in this TR.
Note 2: This may be done by inserting a
copy of Canadair (Bombardier) TR RJ/164–2,
dated May 14, 2009, into the AFM. When this
TR has been included in general revisions of
the AFM, the general revisions may be
inserted in the AFM, provided the relevant
information in the general revision is
identical to that in Canadair (Bombardier) TR
RJ/164–2, dated May 14, 2009.
(2) Within 30 days after the effective date
of this AD, revise the maintenance program
by incorporating the inspection requirements
for Tasks C30–10–141–03, C30–10–141–05,
and C30–10–141–07, contained in
Bombardier TR 2A–46, dated July 24, 2009,
into Appendix A, ‘‘Certification Maintenance
Requirements,’’ of Part 2 of the Bombardier
CL–600–2B19 Maintenance Requirements
Manual (MRM). The initial compliance times
for the tasks identified in Bombardier TR 2A–
46, dated July 24, 2009, are specified in Table
1 of this AD.
Note 3: The actions required by paragraph
(g)(2) of this AD may be done by inserting a
copy of Bombardier TR 2A–46, dated July 24,
2009, into the Bombardier CL–600–2B19
MRM. When this TR has been included in
general revisions of the MRM, the general
revisions may be inserted into the MRM,
provided the relevant information in the
general revision is identical to that in
Bombardier TR 2A–46, dated July 24, 2009.
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01APR1
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Federal Register / Vol. 76, No. 63 / Friday, April 1, 2011 / Rules and Regulations
TABLE 1—INITIAL COMPLIANCE TIMES FOR TASKS IN BOMBARDIER TR 2A–46
Task
Applicability
C30–10–141–03 ......
Airplanes on which Modification Summary TC601R17494 or actions specified in Bombardier Service Bulletin
601R–30–031 have been done.
C30–10–141–05 ......
Airplanes with outboard sufficient heat
switches installed in accordance with
Modification
Summary
TC601R17494 or actions specified
in Bombardier Service Bulletin
601R–30–031 have been done.
Airplanes with outboard sufficient heat
switches installed in accordance with
Modification
Summary
TC601R17494 or actions specified
in Bombardier Service Bulletin
601R–30–031 have been done.
C30–10–141–07 ......
(3) For airplanes having S/Ns 7003 through
8095 inclusive: Before or concurrently with
accomplishing the actions required by
paragraph (g)(5) of this AD: Replace any data
concentrator units (DCUs) having part
number (P/N) 622–9820–007, 622–9820–008,
or 622–9820–009 with modified DCUs having
P/N 622–9820–010, and, if applicable,
modify the configuration strapping units
(CSUs), in accordance with the
Accomplishment Instructions of Bombardier
Service Bulletin 601R–31–034, Revision A,
dated April 10, 2008.
(4) Before or concurrently with
accomplishing the actions required by
paragraph (g)(5) of this AD: Install the
Initial compliance time (whichever occurs later)
Before the accumulation of 6,000 total
flight hours; or if accomplished previously, within 6,000 flight hours
since this task was last accomplished.
Before the accumulation of 6,000 total
flight hours; or if accomplished previously, within 6,000 flight hours
since this task was last accomplished.
Within 5 flight hours or 30 days after
the effective date of this AD, whichever occurs later.
Before the accumulation of 6,000 total
flight hours; or if accomplished previously, within 6,000 flight hours
since this task was last accomplished.
Within 5 flight hours or 30 days after
the effective date of this AD, whichever occurs later.
outboard low-heat detection switches, and
wing A/ICE box assembly and its associated
wires, in accordance with the
Accomplishment Instructions of Parts A, C,
D, and E of Bombardier Service Bulletin
601R–30–031, Revision D, dated February 3,
2010.
Note 4: A small number of cases have been
reported in which piccolo ducts were found
to have been installed in the opposite wing,
resulting in the incorrect orientation of the
bleed holes. During reinstallation of the
piccolo ducts and leading edge assemblies
after installing the low-heat detection
switches, particular attention should be paid
to the correct alignment of the piccolo ducts.
Within 5 flight hours or 30 days after
the effective date of this AD, whichever occurs later.
Guidance can be found in Task 30–11–41–
820–801 of the Canadair CRJ Series Regional
Jet Aircraft Maintenance Manual.
(5) Within 11 months after the effective
date of this AD: Activate the outboard lowheat detection switches in accordance with
Part F of the Accomplishment Instructions of
Bombardier Service Bulletin 601R–30–031,
Revision D, dated February 3, 2010.
(6) Actions accomplished in accordance
with the service information specified in
Table 2 of this AD, before the effective date
of this AD, are acceptable for compliance
with the corresponding actions required by
paragraphs (g)(4) and (g)(5) of this AD.
TABLE 2—ACCEPTABLE SERVICE INFORMATION
Bombardier Service Bulletin—
Revision—
Dated—
601R–30–031
601R–30–031
601R–30–031
601R–30–031
Original ......................................................................
A ................................................................................
B ................................................................................
C ...............................................................................
May 15, 2009.
September 8, 2009.
October 28, 2009.
December 23, 2009.
..............................................................................
..............................................................................
..............................................................................
..............................................................................
(7) Replacing DCUs P/N 622–9820–007,
622–9820–008, or 622–9820–009 with
modified DCUs having P/N 622–9820–010,
and modifying CSUs, are also acceptable for
compliance with the requirements of
paragraph (g)(3) of this AD if done before the
effective date of this AD, in accordance with
Accomplishment Instructions of Bombardier
Service Bulletin 601R–30–034, dated
November 19, 2007.
jlentini on DSKJ8SOYB1PROD with RULES
FAA AD Differences
Note 5: This AD differs from the MCAI
and/or service information as follows: The
MCAI specifies to include the revised Task
C30–10–141–01. This AD does not include
Task 30–10–141–01. This difference has been
coordinated with TCCA.
VerDate Mar<15>2010
16:52 Mar 31, 2011
Jkt 223001
Other FAA AD Provisions
(h) 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 ATTN:
Program Manager, Continuing Operational
Safety, FAA, New York ACO, 1600 Stewart
Avenue, Suite 410, Westbury, New York
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
PO 00000
Frm 00028
Fmt 4700
Sfmt 4700
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.
Related Information
(i) Refer to MCAI Transport Canada Civil
Aviation (TCCA) Airworthiness Directive
CF–2009–37, dated September 30, 2009; and
the service information specified in Table 3
of this AD; for related information.
E:\FR\FM\01APR1.SGM
01APR1
Federal Register / Vol. 76, No. 63 / Friday, April 1, 2011 / Rules and Regulations
18029
TABLE 3—SERVICE INFORMATION
Service information
Revision
Date
Bombardier Service Bulletin 601R–30–031 .............................................................................................
Bombardier Service Bulletin 601R–31–034 .............................................................................................
Bombardier Temporary Revision 2A–46 to Appendix A—Certification Maintenance Requirements of
Part 2 of the Bombardier CL-600–2B19 Maintenance Requirements Manual.
Canadair (Bombardier) Temporary Revision RJ/164–2 to the Canadair Regional Jet Airplane Flight
Manual CSP A–012.
D ............................
A ............................
Original ..................
February 3, 2010.
April 10, 2008.
July 24, 2009.
Original ..................
May 14, 2009.
Material Incorporated by Reference
(j) You must use the service information
contained in Table 4 of this AD, as
applicable, to do the actions required by this
AD, unless the AD specifies otherwise.
(1) The Director of the Federal Register
approved the incorporation by reference of
this service information under 5 U.S.C.
552(a) and 1 CFR part 51.
(2) For service information identified in
ˆ
this AD, contact Bombardier, Inc., 400 Cote´
Vertu Road West, Dorval, Quebec H4S 1Y9,
Canada; telephone 514–855–5000; fax 514–
855–7401; e-mail
thd.crj@aero.bombardier.com; Internet https://
www.bombardier.com.
(3) You may review copies of the service
information at the FAA, Transport Airplane
Directorate, 1601 Lind Avenue, SW., Renton,
Washington. For information on the
availability of this material at the FAA, call
425–227–1221.
(4) You may also review copies of the
service information that is incorporated by
reference at the National Archives and
Records Administration (NARA). For
information on the availability of this
material at NARA, call 202–741–6030, or go
to: https://www.archives.gov/federal_register/
code_of_federal_regulations/
ibr_locations.html.
TABLE 4—MATERIAL INCORPORATED BY REFERENCE
Service information
Revision
Date
Bombardier Service Bulletin 601R–30–031 .............................................................................................
Bombardier Service Bulletin 601R–31–034 .............................................................................................
Bombardier Temporary Revision 2A–46 to Appendix A—Certification Maintenance Requirements of
Part 2 of the Bombardier CL–600–2B19 Maintenance Requirements Manual.
Canadair (Bombardier) Temporary Revision RJ/164–2 to the Canadair Regional Jet Airplane Flight
Manual CSP A–012.
D ............................
A ............................
Original ..................
February 3, 2010.
April 10, 2008.
July 24, 2009.
Original ..................
May 14, 2009.
Issued in Renton, Washington, on March
14, 2011.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
an unsafe condition on an aviation
product. The MCAI describes the unsafe
condition as:
Federal Aviation Administration
* * * Under certain conditions, an ignition
source may develop in the wing tank vapour
space, due to insufficient clearance between
the wiring along the Fuel Quantity Tank
Units (FQTU’s) and the local reinforcing
structure around the upper skin cut-out.
This condition, if not corrected, in
combination with flammable fuel vapours,
could result in a wing tank explosion and
consequent loss of the aeroplane.
14 CFR Part 39
*
[FR Doc. 2011–6630 Filed 3–31–11; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
[Docket No. FAA–2010–1304; Directorate
Identifier 2010–NM–254–AD; Amendment
39–16644; AD 2011–07–07]
RIN 2120–AA64
Airworthiness Directives; Fokker
Services B.V. Model F.28 Mark 1000,
2000, 3000, and 4000 Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
jlentini on DSKJ8SOYB1PROD with RULES
AGENCY:
We are adopting a new
airworthiness directive (AD) for the
products listed above. This AD results
from mandatory continuing
airworthiness information (MCAI)
originated by an aviation authority of
another country to identify and correct
SUMMARY:
VerDate Mar<15>2010
16:52 Mar 31, 2011
Jkt 223001
*
*
*
*
We are issuing this AD to require
actions to correct the unsafe condition
on these products.
DATES: This AD becomes effective May
6, 2011.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in this AD
as of May 6, 2011.
ADDRESSES: You may examine the AD
docket on the Internet at https://
www.regulations.gov or in person at the
U.S. Department of Transportation,
Docket Operations, M–30, West
Building Ground Floor, Room W12–140,
1200 New Jersey Avenue, SE.,
Washington, DC.
FOR FURTHER INFORMATION CONTACT: Tom
Rodriguez, Aerospace Engineer,
International Branch, ANM–116,
Transport Airplane Directorate, FAA,
PO 00000
Frm 00029
Fmt 4700
Sfmt 4700
1601 Lind Avenue, SW., Renton,
Washington 98057–3356; telephone
(425) 227–1137; fax (425) 227–1149.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would
apply to the specified products. That
NPRM was published in the Federal
Register on January 5, 2011 (76 FR 482).
That NPRM proposed to correct an
unsafe condition for the specified
products. The MCAI states:
* * * The FAA has published Special Federal
Aviation Regulation (SFAR) 88, and the [Joint
Aviation Authorities] JAA has published
Interim Policy INT/POL/25/12. The design
review conducted by Fokker Services on the
Fokker F28 type design in response to these
regulations revealed that, under certain
conditions, an ignition source may develop
in the wing tank vapour space, due to
insufficient clearance between the wiring
along the Fuel Quantity Tank Units (FQTU’s)
and the local reinforcing structure around the
upper skin cut-out.
This condition, if not corrected, in
combination with flammable fuel vapours,
could result in a wing tank explosion and
consequent loss of the aeroplane.
For the reasons described above, this AD
requires a one-time [detailed] inspection to
investigate if a clearance of 3 mm (0.12 inch)
or more is available between the FQTU
E:\FR\FM\01APR1.SGM
01APR1
]]>Agencies
[Federal Register Volume 76, Number 63 (Friday, April 1, 2011)]
[Rules and Regulations]
[Pages 18024-18029]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-6630]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2010-0436; Directorate Identifier 2009-NM-230-AD;
Amendment 39-16643; AD 2011-07-06]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc. Model CL-600-2B19
(Regional Jet Series 100 & 440) Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: We are adopting a new airworthiness directive (AD) for the
products listed above. This AD results from mandatory continuing
airworthiness information (MCAI) originated by an aviation authority of
another country to identify and correct an unsafe condition on an
aviation product. The MCAI describes the unsafe condition as:
* * * There have recently been several in-service occurrences that
have highlighted the inability of the existing [wing anti-ice]
system to detect a low-heat condition in the wing leading edge at
all times, with the potential consequence of unannunciated
asymmetric ice build-up on the wing. * * *
[[Page 18025]]
Such a condition, in combination with maneuvers close to stick
shaker activation, could possibly result in reduced controllability
of the aircraft.
* * * * *
We are issuing this AD to require actions to correct the unsafe
condition on these products.
DATES: This AD becomes effective May 6, 2011.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of May 6, 2011.
ADDRESSES: You may examine the AD docket on the Internet at https://www.regulations.gov or in person at the U.S. Department of
Transportation, Docket Operations, M-30, West Building Ground Floor,
Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC.
FOR FURTHER INFORMATION CONTACT: Wing Chan, Aerospace Engineer,
Avionics and Flight Test Branch, ANE-172, FAA, New York Aircraft
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury,
New York 11590; telephone (516) 228-7311; fax (516) 794-5531.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would apply to the specified products.
That NPRM was published in the Federal Register on May 10, 2010 (75 FR
25788). That NPRM proposed to correct an unsafe condition for the
specified products. The MCAI states:
At present, the Wing Anti-Ice System (WAIS) sufficient heat
switches/sensors on CL-600-2B19 aircraft are located at the inboard
end of each wing and require a simultaneous low-pressure signal to
generate a L or R WING A/ICE amber caution. However, there have
recently been several in-service occurrences that have highlighted
the inability of the existing system to detect a low-heat condition
in the wing leading edge at all times, with the potential
consequence of unannunciated asymmetric ice build-up on the wing.
These have included partial failure of several piccolo ducts [ref:
Airworthiness Directive (AD) CF-2008-30] and partial (not fully
closed or open) failure of a modulating and shut-off valve, the
latter resulting in unannunciated asymmetric ice build-up on the
wing leading edge. Such a condition, in combination with maneuvers
close to stick shaker activation, could possibly result in reduced
controllability of the aircraft.
This directive mandates:
(a) Revision of the Airplane Flight Manual (AFM) to notify the
flight crew that, following installation and activation of the low-
heat detection switches, certain WAIS mode selection changes may
result in a two-minute inhibition of the wing anti-ice message, if
posted;
(b) Revision of the approved maintenance schedule to include one
revised and three new functional checks that are required following
activation of the low-heat detection switches;
(c) Replacement of the Data Concentrator Units (DCUs) with DCUs
incorporating a software update that caters for the new outboard
low-heat detection switches and generates the appropriate anti-ice
message for the flight crew when a low-heat condition is detected;
Note: Although not related to this directive, the software
update also corrects the sampling rate of two previously non-
compliant Flight Data Recorder (FDR) parameters, normal acceleration
and pitch attitude.
(d) Installation of the low-heat detection switches in the wing
outboard leading edges, the wing A/ICE box assembly and associated
wires; and
(e) Activation of the low-heat detection switches.
You may obtain further information by examining the MCAI in the AD
docket.
Comments
We gave the public the opportunity to participate in developing
this AD. We considered the comments received.
Support for the NPRM
Air Line Pilots Association, International (ALPA) stated that it
agrees that all reasonable steps should be taken to avoid reduced
controllability while operating in icing conditions. ALPA stated that
it supports the NPRM, but also encouraged the FAA to implement it as
soon as possible to enable full compliance before winter.
Requests To Revise Costs of Compliance
Limited Brands and Air Wisconsin requested that we revise the costs
of compliance. Limited Brands disagreed with the estimate of 21 work-
hours and the cost of $1,785 per product to comply with the proposed
AD. Limited Brands stated that the modification of the data
concentrator unit (DCU), as required by paragraph (g)(3) of the NPRM,
costs $1,200, the installation required by paragraph (g)(4) of the NPRM
costs $3,300, and additional labor costs are $25,000, which brings the
actual cost to $30,000 per airplane. Air Wisconsin stated it calculated
that the costs are $600 for each of the two upgrades, $2,570 for other
required parts, and 70 work-hours--for a total of $9,720 per airplane.
We agree to revise the Costs of Compliance section of this AD. We
have based our cost estimate on the service information and information
from the manufacturer, and have calculated the costs for complying with
the AD as follows: 2 work-hours for revising the Limitations section of
the AFM and the ALI; 3 work-hours for replacing the DCU; 72 work-hours
for installing the switches, assemblies, and wires; and 4 work-hours
for activating the switches. We also calculated $4,500 for parts. We
revised the Costs of Compliance section of this AD accordingly.
Request To Clarify the Modification to the Wing Leading Edges
Air Wisconsin requested clarification regarding the modification of
the wing leading edges. Air Wisconsin noted that the effectivity is
against the airplane models but Bombardier Service Bulletin 601R-30-
031, Revision D, dated February 3, 2010, specifies modifying the
leading edges, which was not addressed in the NPRM. Air Wisconsin noted
that, if a non-modified spare leading edge is installed, there could be
cause for confusion.
We agree to provide clarification. The actions required by
paragraph (g)(4) of this AD include modifying the leading edges.
Request To Revise the Compliance Time for Requirements of Paragraph
(g)(2) of the NPRM for Task C30-10-141-01
Mesa Airlines requested that we clarify the requirements of
paragraph (g)(2) of the NPRM for Task C30-10-141-01. Mesa Airlines
stated that on page 2A-11 of Appendix A of Part 2 of the Bombardier CL-
600-2B19 Maintenance Requirement Manual (MRM), Task C30-10-141-10
provides the functional check of the wing anti-ice standby overheat
switches and overheat/sufficient heat sensors and associated circuitry
with an interval of 6,000 flight hours. Mesa Airlines stated that page
1-2-35 of Section 2 of Part 1 of the Bombardier CL-600-2B19 Maintenance
Review Board (MRB) Report, Task 30-12-12-01, ``Functional check of the
wing anti-ice overheat sensors (duplicate Certification Maintenance
Requirements (CMR) C30-10-141-01),'' provides a compliance time of
4,000 flight hours. Mesa Airlines also stated that page 1-1-6 of
Section 1 of Part 1 of the Bombardier CL-600-2B19 MRM states the
following in Note 15: ``This task has a duplicate CMR requirement.
Refer to Maintenance Requirements Manual, CSP-A-053, Part 2, Appendix
A, for identification of specific requirements regarding handling of
CMRs. Where the CMR interval for an MRB report task is more
restrictive, the CMR interval takes precedence. When the interval for
an MRB report task is more restrictive, the
[[Page 18026]]
MRB report task interval will take precedence.''
Mesa Airlines asked that we clarify the NPRM as to which interval
needs to be tracked--6,000 flight hours or 4,000 flight hours.
We agree to clarify. The intent of the AD is to introduce the CMR
tasks that are associated with the new switches. CMR Task C30-10-141-01
was inadvertently mandated in Canadian AD CF-2009-37 and was carried
over into the NPRM. The MRB group is currently looking into harmonizing
these task intervals. Therefore, we have removed CMR Task C30-10-141-01
from Table 1 of this final rule.
Request To Clarify Required Service Information
Air Wisconsin requested that we clarify the name of the service
information in paragraph (g)(2) of the NPRM. Air Wisconsin stated that
paragraph (g)(2) of the NPRM refers to ``Airworthiness Limitations
Instructions.'' Air Wisconsin asked if it should instead be
``Bombardier CL-600-2B19 Maintenance Requirements Manual (MRM),
Appendix A, Certification Maintenance Requirements (CMR).''
We agree with the commenter's suggested service information
citation. We have changed paragraph (g)(2) of this final rule
accordingly.
Request To Revise Compliance Time in Table 1 of the NPRM
Air Wisconsin requested that we revise the compliance time in Table
1 of the NPRM. Air Wisconsin stated that under the column heading
``Initial Compliance Time (whichever occurs later)'' for Tasks C30-10-
141-03, C30-10-141-05, and C30-10-141-07 in Table 1, the compliance
time under that column heading should read ``Before the accumulation of
6,000 flight hours, or if previously accomplished, within 6,000 flight
hours since last accomplishment, whichever comes first.'' The commenter
did not provide a reason for these suggestions.
We agree with the commenter's suggested change. The intent of Table
1 is to establish the initial compliance times for accomplishment of
the specified tasks because only repetitive intervals are specified in
Bombardier TR 2A-46, dated July 24, 2009. However, we acknowledge that
some operators might have previously accomplished the initial tasks and
could be doing those tasks repetitively. The commenter's suggested
language would provide credit for earlier accomplishment of the tasks
for those operators. We have revised Table 1 to include the language
suggested by the commenter.
Request To Remove Note 3 of the NPRM
Air Wisconsin requested to remove Note 3 from the NPRM. Air
Wisconsin stated that the inspection requirements in Bombardier
Temporary Revision (TR) 2A-46, dated July 24, 2009, are already
contained in the general revision of the MRM, specifically, Revision 9,
dated December 10, 2009. Air Wisconsin stated that this updated general
revision makes Note 3 irrelevant and, therefore, the note should be
removed.
We disagree. The note is necessary to keep operators in compliance
when the TR is incorporated into general revisions. Operators that have
a revision of the MRM that contains the information in Bombardier TR
2A-46 are in compliance. We have not changed the final rule in regard
to this issue.
Request To Remove Note 4 of the NPRM
Air Wisconsin requested we remove Note 4 from the NPRM. Air
Wisconsin stated this note is not pertinent to the content of the NPRM
because Task 30-11-41-820-801 is not part of Bombardier Service
Bulletin 601R-30-031, Revision D, dated February 3, 2010, and should be
removed.
We disagree. Task 30-11-41-820-801 is pertinent to this AD because
it is part of the Bombardier CRJ Series Regional Jet Aircraft
Maintenance Manual, and it provides guidance to correct alignment of
the piccolo ducts since a small number of cases have been reported in
which they were found to have been installed in the opposing wing,
resulting in the incorrect orientation of the bleed holes. One of the
requirements of this AD is to install the low-heat direction switches
in the wing outboard leading edges. This task requires particular
attention to the correct alignment of the piccolo ducts after the
installation of the low-heat detection switches. We have not changed
the final rule in regard to this issue.
Request To Revise Compliance Time for Requirements of Paragraph (g)(5)
of the NPRM
Air Wisconsin, Mesaba Airlines, and Mesa Airlines requested that we
revise the compliance time for activating the outboard low-heat
detection switches, as proposed by paragraph (g)(5) of the NPRM. Air
Wisconsin requested that incorporating the procedures specified in Part
F of the Accomplishment Instructions of Bombardier Service Bulletin
601R-30-031, Revision D, dated February 3, 2010, should be performed at
the next heavy maintenance visit, provided that parts (kits) are
available. Air Wisconsin stated that it has scheduled these tasks to be
completed by the end of December 2011. Mesaba Airlines requested that
the compliance time in paragraph (g) of the NPRM be revised from 11
months to 5,000 flight hours after the effective date of this AD.
Mesaba Airlines stated that the 11-month compliance time for the
modification will result in extended downtime and cause interruptions.
Mesa Airlines stated that it agrees with Mesaba Airlines' request to
change the compliance time from months to hours.
We disagree. In developing the compliance time for this AD action,
we considered not only the safety implications of the identified unsafe
condition, but the average utilization rate of the affected fleet, the
practical aspects of an orderly modification of the fleet during
regular maintenance periods, the availability of required parts, and
the time necessary for the rulemaking process. The proposed compliance
time, which is based on the effective date of the final rule, was
determined to be appropriate. However, under the provisions of
paragraph (h) of the final rule, we will consider requests for approval
of an extension of the compliance time if sufficient data are submitted
to substantiate that the change would provide an acceptable level of
safety. We have not changed the final rule in regard to this issue.
Clarification of Changes to This AD
We have revised paragraph (e) of this AD by removing some text and
retaining only the text that applies to the Reason section of this AD.
In addition, we have removed paragraph (h)(3) of the NPRM because
this AD does not contain a reporting requirement.
Conclusion
We reviewed the available data, including the comments received,
and determined that air safety and the public interest require adopting
the AD with the changes described previously. We determined that these
changes will not increase the economic burden on any operator or
increase the scope of the AD.
Differences Between This AD and the MCAI or Service Information
We have reviewed the MCAI and related service information and, in
general, agree with their substance. But we might have found it
necessary to use different words from those in the MCAI to ensure the
AD is clear for U.S. operators and is enforceable. In making these
changes, we do not intend to differ substantively from the information
[[Page 18027]]
provided in the MCAI and related service information.
We might also have required different actions in this AD from those
in the MCAI in order to follow our FAA policies. Any such differences
are highlighted in a NOTE within the AD.
Costs of Compliance
We estimate that this AD affects 599 products of U.S. registry. We
also estimate that it takes about 81 work-hours per product to comply
with the basic requirements of this AD. The average labor rate is $85
per work-hour. Parts cost $4,500 per product. Based on these figures,
we estimate the cost of this AD to the U.S. operators to be $6,819,615,
or $11,385 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 AD will not have federalism implications
under Executive Order 13132. This AD will 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 AD:
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); 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.
We prepared a regulatory evaluation of the estimated costs to
comply with this AD and placed it in the AD docket.
Examining the AD Docket
You may examine the AD docket on the Internet at https://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 the NPRM, 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.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 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:
2011-07-06 Bombardier, Inc.: Amendment 39-16643. Docket No. FAA-
2010-0436; Directorate Identifier 2009-NM-230-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective May 6,
2011.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Bombardier, Inc. Model CL-600-2B19
(Regional Jet Series 100 & 440) airplanes, certificated in any
category, serial numbers 7003 through 8101 inclusive.
Note 1: This AD requires revisions to certain operator
maintenance documents to include new inspections. Compliance with
these inspections is required by 14 CFR 91.403(c). For airplanes
that have been previously modified, altered, or repaired in the
areas addressed by these inspections, 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 paragraph (h)(1) of this AD. The request should include a
description of changes to the required inspections that will ensure
the continued operational safety of the airplane.
Subject
(d) Air Transport Association (ATA) of America Code 30 and 31:
Ice and rain protection, and instruments, respectively.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
* * * There have recently been several in-service occurrences that
have highlighted the inability of the existing [wing anti-ice]
system to detect a low-heat condition in the wing leading edge at
all times, with the potential consequence of unannunciated
asymmetric ice build-up on the wing. * * * Such a condition, in
combination with maneuvers close to stick shaker activation, could
possibly result in reduced controllability of the aircraft.
* * * * *
Compliance
(f) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.
Actions
(g) Do the following actions.
(1) Within 30 days after the effective date of this AD, revise
the Limitations and Normal Procedures sections of the Canadair
Regional Jet Airplane Flight Manual (AFM), CSP A-012, to include the
information in Canadair (Bombardier) Temporary Revision (TR) RJ/164-
2, dated May 14, 2009. This TR introduces procedures for operation
in icing conditions. Operate the airplane according to the
limitations and procedures in this TR.
Note 2: This may be done by inserting a copy of Canadair
(Bombardier) TR RJ/164-2, dated May 14, 2009, into the AFM. When
this TR has been included in general revisions of the AFM, the
general revisions may be inserted in the AFM, provided the relevant
information in the general revision is identical to that in Canadair
(Bombardier) TR RJ/164-2, dated May 14, 2009.
(2) Within 30 days after the effective date of this AD, revise
the maintenance program by incorporating the inspection requirements
for Tasks C30-10-141-03, C30-10-141-05, and C30-10-141-07, contained
in Bombardier TR 2A-46, dated July 24, 2009, into Appendix A,
``Certification Maintenance Requirements,'' of Part 2 of the
Bombardier CL-600-2B19 Maintenance Requirements Manual (MRM). The
initial compliance times for the tasks identified in Bombardier TR
2A-46, dated July 24, 2009, are specified in Table 1 of this AD.
Note 3: The actions required by paragraph (g)(2) of this AD may
be done by inserting a copy of Bombardier TR 2A-46, dated July 24,
2009, into the Bombardier CL-600-2B19 MRM. When this TR has been
included in general revisions of the MRM, the general revisions may
be inserted into the MRM, provided the relevant information in the
general revision is identical to that in Bombardier TR 2A-46, dated
July 24, 2009.
[[Page 18028]]
Table 1--Initial Compliance Times for Tasks in Bombardier TR 2A-46
----------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------
Task Applicability Initial compliance time (whichever occurs later)
----------------------------------------------------------------------------------------------------------------
C30-10-141-03................. Airplanes on which Before the accumulation Within 5 flight hours or
Modification Summary of 6,000 total flight 30 days after the
TC601R17494 or actions hours; or if effective date of this
specified in Bombardier accomplished previously, AD, whichever occurs
Service Bulletin 601R-30- within 6,000 flight later.
031 have been done. hours since this task
was last accomplished.
C30-10-141-05................. Airplanes with outboard Before the accumulation Within 5 flight hours or
sufficient heat switches of 6,000 total flight 30 days after the
installed in accordance hours; or if effective date of this
with Modification Summary accomplished previously, AD, whichever occurs
TC601R17494 or actions within 6,000 flight later.
specified in Bombardier hours since this task
Service Bulletin 601R-30- was last accomplished.
031 have been done.
C30-10-141-07................. Airplanes with outboard Before the accumulation Within 5 flight hours or
sufficient heat switches of 6,000 total flight 30 days after the
installed in accordance hours; or if effective date of this
with Modification Summary accomplished previously, AD, whichever occurs
TC601R17494 or actions within 6,000 flight later.
specified in Bombardier hours since this task
Service Bulletin 601R-30- was last accomplished.
031 have been done.
----------------------------------------------------------------------------------------------------------------
(3) For airplanes having S/Ns 7003 through 8095 inclusive:
Before or concurrently with accomplishing the actions required by
paragraph (g)(5) of this AD: Replace any data concentrator units
(DCUs) having part number (P/N) 622-9820-007, 622-9820-008, or 622-
9820-009 with modified DCUs having P/N 622-9820-010, and, if
applicable, modify the configuration strapping units (CSUs), in
accordance with the Accomplishment Instructions of Bombardier
Service Bulletin 601R-31-034, Revision A, dated April 10, 2008.
(4) Before or concurrently with accomplishing the actions
required by paragraph (g)(5) of this AD: Install the outboard low-
heat detection switches, and wing A/ICE box assembly and its
associated wires, in accordance with the Accomplishment Instructions
of Parts A, C, D, and E of Bombardier Service Bulletin 601R-30-031,
Revision D, dated February 3, 2010.
Note 4: A small number of cases have been reported in which
piccolo ducts were found to have been installed in the opposite
wing, resulting in the incorrect orientation of the bleed holes.
During reinstallation of the piccolo ducts and leading edge
assemblies after installing the low-heat detection switches,
particular attention should be paid to the correct alignment of the
piccolo ducts. Guidance can be found in Task 30-11-41-820-801 of the
Canadair CRJ Series Regional Jet Aircraft Maintenance Manual.
(5) Within 11 months after the effective date of this AD:
Activate the outboard low-heat detection switches in accordance with
Part F of the Accomplishment Instructions of Bombardier Service
Bulletin 601R-30-031, Revision D, dated February 3, 2010.
(6) Actions accomplished in accordance with the service
information specified in Table 2 of this AD, before the effective
date of this AD, are acceptable for compliance with the
corresponding actions required by paragraphs (g)(4) and (g)(5) of
this AD.
Table 2--Acceptable Service Information
----------------------------------------------------------------------------------------------------------------
Bombardier Service Bulletin-- Revision-- Dated--
----------------------------------------------------------------------------------------------------------------
601R-30-031............................. Original................... May 15, 2009.
601R-30-031............................. A.......................... September 8, 2009.
601R-30-031............................. B.......................... October 28, 2009.
601R-30-031............................. C.......................... December 23, 2009.
----------------------------------------------------------------------------------------------------------------
(7) Replacing DCUs P/N 622-9820-007, 622-9820-008, or 622-9820-
009 with modified DCUs having P/N 622-9820-010, and modifying CSUs,
are also acceptable for compliance with the requirements of
paragraph (g)(3) of this AD if done before the effective date of
this AD, in accordance with Accomplishment Instructions of
Bombardier Service Bulletin 601R-30-034, dated November 19, 2007.
FAA AD Differences
Note 5: This AD differs from the MCAI and/or service
information as follows: The MCAI specifies to include the revised
Task C30-10-141-01. This AD does not include Task 30-10-141-01. This
difference has been coordinated with TCCA.
Other FAA AD Provisions
(h) 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 ATTN: Program Manager, Continuing
Operational Safety, FAA, New York ACO, 1600 Stewart Avenue, Suite
410, Westbury, New York 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.
Related Information
(i) Refer to MCAI Transport Canada Civil Aviation (TCCA)
Airworthiness Directive CF-2009-37, dated September 30, 2009; and
the service information specified in Table 3 of this AD; for related
information.
[[Page 18029]]
Table 3--Service Information
----------------------------------------------------------------------------------------------------------------
Service information Revision Date
----------------------------------------------------------------------------------------------------------------
Bombardier Service Bulletin 601R-30-031............ D........................ February 3, 2010.
Bombardier Service Bulletin 601R-31-034............ A........................ April 10, 2008.
Bombardier Temporary Revision 2A-46 to Appendix A-- Original................. July 24, 2009.
Certification Maintenance Requirements of Part 2
of the Bombardier CL[dash]600-2B19 Maintenance
Requirements Manual.
Canadair (Bombardier) Temporary Revision RJ/164-2 Original................. May 14, 2009.
to the Canadair Regional Jet Airplane Flight
Manual CSP A-012.
----------------------------------------------------------------------------------------------------------------
Material Incorporated by Reference
(j) You must use the service information contained in Table 4 of
this AD, as applicable, to do the actions required by this AD,
unless the AD specifies otherwise.
(1) The Director of the Federal Register approved the
incorporation by reference of this service information under 5
U.S.C. 552(a) and 1 CFR part 51.
(2) For service information identified in this AD, contact
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval,
Qu[eacute]bec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-
7401; e-mail thd.crj@aero.bombardier.com; Internet https://www.bombardier.com.
(3) You may review copies of the service information at the FAA,
Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton,
Washington. For information on the availability of this material at
the FAA, call 425-227-1221.
(4) You may also review copies of the service information that
is incorporated by reference at the National Archives and Records
Administration (NARA). For information on the availability of this
material at NARA, call 202-741-6030, or go to: https://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
Table 4--Material Incorporated by Reference
----------------------------------------------------------------------------------------------------------------
Service information Revision Date
----------------------------------------------------------------------------------------------------------------
Bombardier Service Bulletin 601R-30-031............ D........................ February 3, 2010.
Bombardier Service Bulletin 601R-31-034............ A........................ April 10, 2008.
Bombardier Temporary Revision 2A-46 to Appendix A-- Original................. July 24, 2009.
Certification Maintenance Requirements of Part 2
of the Bombardier CL-600-2B19 Maintenance
Requirements Manual.
Canadair (Bombardier) Temporary Revision RJ/164-2 Original................. May 14, 2009.
to the Canadair Regional Jet Airplane Flight
Manual CSP A-012.
----------------------------------------------------------------------------------------------------------------
Issued in Renton, Washington, on March 14, 2011.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2011-6630 Filed 3-31-11; 8:45 am]
BILLING CODE 4910-13-P
