[Federal Register Volume 79, Number 26 (Friday, February 7, 2014)]
[Rules and Regulations]
[Pages 7382-7386]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2014-02468]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2012-0997; Directorate Identifier 2012-NM-060-AD;
Amendment 39-17729; AD 2014-02-01]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc. Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
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SUMMARY: We are superseding Airworthiness Directive (AD) 2011-03-
[[Page 7383]]
13 for certain Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series
700, 701, & 702) airplanes, Model CL-600-2D15 (Regional Jet Series 705)
airplanes, and Model CL-600-2D24 (Regional Jet Series 900) airplanes.
AD 2011-03-13 required repetitive inspections of the rudder travel
limiter (RTL) return springs and primary actuator, and corrective
actions if necessary. This new AD requires replacing certain RTL return
springs, including doing related investigative and corrective actions,
if necessary; which is terminating action for the repetitive
inspections. This new AD also revises the applicability. This AD was
prompted by reports of failure of the RTL return spring. We are issuing
this AD to prevent failure of the RTL, which would permit an increase
of rudder authority beyond normal structural limits and consequently
affect the controllability of the airplane.
DATES: This AD becomes effective March 14, 2014.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of March 14,
2014.
The Director of the Federal Register approved the incorporation by
reference of a certain other publication listed in this AD as of March
14, 2011 (76 FR 6539, February 7, 2011).
ADDRESSES: You may examine the AD docket on the Internet at http://www.regulations.gov/#!docketDetail;D=FAA-2012-0997; or in person at the
Docket Management Facility, U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE., Washington, DC.
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; email
[email protected]; Internet http://www.bombardier.com. You
may view this 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.
FOR FURTHER INFORMATION CONTACT: Cesar Gomez, Aerospace Engineer,
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, NY
11590; telephone (516) 228-7318; fax (516) 794-5531.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2011-03-13, Amendment 39-16597 (76 FR 6539,
February 7, 2011). AD 2011-03-13 applied to certain Bombardier, Inc.
Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes,
Model CL-600-2D15 (Regional Jet Series 705) airplanes, and Model CL-
600-2D24 (Regional Jet Series 900) airplanes. The NPRM published in the
Federal Register on September 24, 2012 (77 FR 58787). The NPRM was
prompted by reports of failure of the RTL return spring. The NPRM
proposed to continue to require repetitive inspections of the rudder
travel limiter (RTL) return springs and primary actuator, and
corrective actions if necessary. The NPRM also proposed to require
replacing certain RTL return springs, including doing related
investigative and corrective actions, if necessary. The NPRM also
proposed to revise the applicability. We are issuing this AD to prevent
failure of the RTL, which would permit an increase of rudder authority
beyond normal structural limits and consequently affect the
controllability of the airplane.
Transport Canada Civil Aviation (TCCA), which is the airworthiness
authority for Canada, has issued Canadian Airworthiness Directive CF-
2010-18R1, dated March 19, 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:
Rudder Travel Limiter (RTL) return spring, part number (P/N)
E0650-069-2750S, failed prior to completion of the required
endurance test. In addition, the replacement RTL return spring, P/N
670-93465-1 (see Note) was found to be susceptible to chafing on the
primary actuator, which could also result in eventual dormant spring
failure. There are two return springs in the RTL and if both springs
failed, a subsequent mechanical disconnect of the RTL components
would result in an unannunciated failure of the RTL. This, in turn,
would permit an increase of rudder authority beyond normal
structural limits and, in the event of a strong rudder input, the
controllability of the aeroplane could be affected.
Note: RTL return springs, P/N 670-93465-1, were installed in
production aeroplanes serial number 10266 (CL-600-2C10) and 15182
(CL-600-2D24) respectively and were introduced in-service by
[Bombardier] Service Bulletin (SB) 670BA-27-047. [Bombardier] SB
670BA-27-047 has since been superseded by [Bombardier] SB 670BA-27-
055.
This [TCCA] AD mandates repetitive [detailed] visual inspection
of the RTL [for broken] return springs and [damage through the
casing or chafing of the casing of the] primary actuator, [and]
replacement of parts as necessary.
This revision mandates the installation of the RTL return
spring, P/N BA670-93468-1, as a terminating action to this [TCCA]
AD.
This AD expands the applicability by adding Model CL-600-2C10 (Regional
Jet Series 700, 701, & 702) airplane, serial number 10002. This AD also
reduces the applicability by removing Model CL-600-2C10 (Regional Jet
Series 700, 701, & 702) airplanes serial numbers 10334 and subsequent;
and also removes Model CL-600-2D15, serial numbers 15289 and
subsequent. The installation consists of replacing certain RTL return
springs with new springs and doing related investigative and corrective
actions, if necessary. The related investigative action is a detailed
inspection of the casing of the primary actuator for signs of chafing
or missing paint. Corrective actions include replacing any broken
return spring with a new spring, repairing any chafing of the primary
actuator on its casing, and replacing any primary actuator that has
damage through its casing with a new actuator. You may examine the MCAI
in the AD docket on the Internet at http://www.regulations.gov/#!documentDetail;D=FAA-2012-0997-0003.
Comments
We gave the public the opportunity to participate in developing
this AD. We considered the comments received.
Request To Correct Service Information
Mesa Air Lines Inc. (Mesa) requested that we correct a step
sequence in Bombardier Service Bulletin 670BA-27-059, Revision A, dated
March 8, 2012. Mesa stated that step (6) of the job set-up section, in
Bombardier Service Bulletin 670BA-27-059, Revision A, dated March 8,
2012, specifies installing the rig pin. Mesa stated that it is not
until step (10) that Bombardier Service Bulletin 670BA-27-059, Revision
A, dated March 8, 2012, specifies removing panels 325DL and 325EL, and
that removing these panels is necessary to install the rig pin.
We agree with the commenter's request regarding the incorrect step
sequence. The manufacturer has issued Revision B to Bombardier Service
Bulletin 670BA-27-059, dated September 26, 2013, which corrects the
step sequence. We have revised paragraph (j) of this final rule to
reference Bombardier Service Bulletin 670BA-27-059, Revision B, dated
September 26, 2013; and added Bombardier Service Bulletin 670BA-27-
[[Page 7384]]
059, Revision A, dated March 8, 2012, to paragraph (k)(2) in this final
rule to provide credit for the actions required by paragraph (j) of
this AD, if those actions were performed before the effective date of
this AD.
Request To Clarify Part Information
Mesa observed that Bombardier Service Bulletin 670BA-27-059,
Revision A, dated March 8, 2012, does not mention, reference, or
address part number (P/N) BA670-93470-5 (rudder travel limiter). Mesa
asked whether Bombardier Service Bulletin 670BA-27-059, Revision A,
dated March 8, 2012, or the proposed AD (77 FR 58787, September 24,
2012) applies to its airplanes, since the service information does not
reference P/N BA670-93470-5.
We agree that clarification is necessary. Only paragraph (j) of
this final rule refers to Bombardier Service Bulletin 670BA-27-059,
Revision B, dated September 26, 2013. Paragraph (j) of this final rule
affects airplanes having parts identified in paragraphs (j)(1) and
(j)(2) of this final rule, and P/N BA670-93470-5 is not identified.
Therefore, operators are not required to do the actions specified in
paragraph (j) of this final rule on airplanes having P/N BA670-93470-5.
However, airplanes having P/N BA670-93470-5 are still affected by
this final rule. This AD applies to airplanes having serial numbers
identified in paragraph (c) of this final rule; paragraph (c) of this
final rule does not exclude airplanes having specific parts. All
operators of the airplanes identified in applicability of this final
rule must show compliance with the provisions of this final rule,
including a determination that specific paragraphs do not apply. We
have not changed this final rule in this regard.
Conclusion
We reviewed the available data, including the comments received,
and determined that air safety and the public interest require adopting
this AD with the changes described previously and minor editorial
changes. We have determined that these changes:
Are consistent with the intent that was proposed in the
NPRM (77 FR 58787, September 24, 2012) for correcting the unsafe
condition; and
Do not add any additional burden upon the public than was
already proposed in the NPRM (77 FR 58787, September 24, 2012).
Costs of Compliance
We estimate that this AD affects 366 airplanes of U.S. registry.
We estimate the following costs to comply with this AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost on U.S.
Action Labor cost Parts cost Cost per product operators
----------------------------------------------------------------------------------------------------------------
Inspection [actions retained from 2 work-hours x $85 $0 $170 per inspection $62,220 per
AD 2011-03-13, Amendment 39- per hour = $170 cycle. inspection cycle.
16597 (76 FR 6539, February 7, per inspection
2011)]. cycle.
Replacement [new action]......... 8 work-hours x $85 1,291 $1,971............. $721,386.
per hour = $680.
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Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. ``Subtitle VII: Aviation
Programs,'' describes in more detail the scope of the Agency's
authority.
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 that 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);
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.
Examining the AD Docket
You may examine the MCAI in the AD docket on the Internet at http://www.regulations.gov/#!documentDetail;D=FAA-2012-0997-0003; 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 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.
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 removing airworthiness directive (AD
2011-03-13, Amendment 39-16597 (76 FR 6539, February 7, 2011), and
adding the following new AD:
2014-02-01 Bombardier, Inc.: Amendment 39-17729. Docket No. FAA-
2012-0997; Directorate Identifier 2012-NM-060-AD.
[[Page 7385]]
(a) Effective Date
This airworthiness directive (AD) becomes effective March 14,
2014.
(b) Affected ADs
This AD supersedes AD 2011-03-13, Amendment 39-16597 (76 FR
6539, February 7, 2011).
(c) Applicability
This AD applies to the Bombardier, Inc. airplanes identified in
paragraphs (c)(1) and (c)(2) of this AD, certificated in any
category.
(1) Model CL-600-2C10 (Regional Jet Series 700, 701, & 702)
airplanes, serial numbers 10002 through 10333 inclusive.
(2) Model CL-600-2D15 (Regional Jet Series 705) airplanes; and
Model CL-600-2D24 (Regional Jet Series 900) airplanes, serial
numbers 15001 through 15288 inclusive.
(d) Subject
Air Transport Association (ATA) of America Code 27, Flight
controls.
(e) Reason
This AD was prompted by reports of failure of the rudder travel
limiter (RTL) return spring. We are issuing this AD to prevent
failure of the RTL, which would permit an increase of rudder
authority beyond normal structural limits and consequently affect
the controllability 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) Retained Initial Inspections and Replacement/Repair for Certain
Airplanes
This paragraph restates the requirements of paragraph (g) of AD
2011-03-13, Amendment 39-16597 (76 FR 6539, February 7, 2011).
Except for Model CL-600-2C10 (Regional Jet Series 700, 701, & 702)
airplane, serial number 10002, for airplanes that have accumulated
4,000 or less total flight hours as of March 14, 2011 (the effective
date of AD 2011-03-13): Before the accumulation of 6,000 total
flight hours, do a detailed inspection of the RTL for broken return
springs and damage through the casing, or chafing of the casing of
the primary actuator, in accordance with the Accomplishment
Instructions of Bombardier Service Bulletin 670BA-27-055, Revision
A, dated August 6, 2010. Before further flight, replace any broken
return springs with new springs, and repair or replace with a new
actuator any chafed or damaged primary actuator, as applicable, in
accordance with the Accomplishment Instructions of Bombardier
Service Bulletin 670BA-27-055, Revision A, dated August 6, 2010.
Repeat the inspection thereafter at intervals not to exceed 6,000
flight hours. Accomplishment of the actions required by paragraph
(j) of this AD terminates the requirements of this paragraph.
(h) Retained Initial Inspections and Replacement/Repair for Certain
Higher Flight Time Airplanes
This paragraph restates the requirements of paragraph (h) of AD
2011-03-13, Amendment 39-16597 (76 FR 6539, February 7, 2011).
Except for Model CL-600-2C10 (Regional Jet Series 700, 701, & 702)
airplane, serial number 10002, for airplanes that have accumulated
more than 4,000 total flight hours as of March 14, 2011 (the
effective date of AD 2011-03-13): Within 2,000 flight hours after
March 14, 2011 (the effective date of AD 2011-03-13), do a detailed
inspection of the RTL for broken return springs and damage through
the casing, or chafing of the casing of the primary actuator, in
accordance with the Accomplishment Instructions of Bombardier
Service Bulletin 670BA-27-055, Revision A, dated August 6, 2010.
Before further flight, replace any broken return springs with new
springs, and repair or replace any chafed or damaged primary
actuator with a new actuator, as applicable, in accordance with the
Accomplishment Instructions of Bombardier Service Bulletin 670BA-27-
055, Revision A, dated August 6, 2010. Repeat the inspection
thereafter at intervals not to exceed 6,000 flight hours.
Accomplishment of the actions required by paragraph (j) of this AD
terminates the requirements of this paragraph.
(i) New RTL Spring Inspection and Replacement for a Certain Airplane
For Model CL-600-2C10 (Regional Jet Series 700, 701, & 702)
airplane, serial number 10002, at the applicable time specified in
paragraph (i)(1) or (i)(2) of this AD: Do a detailed inspection of
the RTL for broken return springs and damage through the casing, or
chafing of the casing of the primary actuator, in accordance with
the Accomplishment Instructions of Bombardier Service Bulletin
670BA-27-055, Revision A, dated August 6, 2010. Before further
flight, replace any broken return springs with new springs, and
repair or replace with a new actuator any chafed or damaged primary
actuator, as applicable, in accordance with the Accomplishment
Instructions of Bombardier Service Bulletin 670BA-27-055, Revision
A, dated August 6, 2010. Repeat the inspection thereafter at
intervals not to exceed 6,000 flight hours. Accomplishment of the
applicable actions required by paragraph (j) of this AD terminates
the requirements of this paragraph.
(1) If the airplane has accumulated 4,000 or less total flight
hours as of the effective date of this AD: Before the accumulation
of 6,000 total flight hours.
(2) If the airplane has accumulated more than 4,000 total flight
hours as of the effective date of this AD: Within 2,000 flight hours
after the effective date of this AD.
(j) New RTL Spring Replacement
At the applicable time specified in paragraph (j)(1) or (j)(2)
of this AD: Replace the RTL return springs with new springs, and do
all applicable related investigative and corrective actions, in
accordance with the Accomplishment Instructions of Bombardier
Service Bulletin 670BA-27-059, Revision B, dated September 26, 2013.
Do all applicable related investigative and corrective actions
before further flight. Accomplishment of the applicable actions
required by this paragraph terminates the requirements of paragraphs
(g), (h), and (i) of this AD.
(1) For airplanes with RTL return springs having part number (P/
N) 670-93465-1: Within 6,000 flight cycles after the effective date
of this AD.
(2) For airplanes with RTL return springs having P/N E0650-069-
2750S: At the applicable time specified in paragraph (j)(2)(i),
(j)(2)(ii), or (j)(2)(iii) of this AD.
(i) For airplanes with 15,400 total flight cycles or more as of
the effective date of this AD: Within 2,000 flight cycles after the
effective date of this AD.
(ii) For airplanes with 5,200 total flight cycles or more, but
less than 15,400 total flight cycles as of the effective date of
this AD: Within 5,000 flight cycles after the effective date of this
AD, but not to exceed 17,400 total flight cycles.
(iii) For airplanes with less than 5,200 total flight cycles as
of the effective date of this AD: Before accumulating 10,200 total
flight cycles.
(k) Credit for Previous Actions
(1) This paragraph provides credit for the actions required by
paragraphs (g) and (h) of this AD, if those actions were performed
before March 14, 2011 (the effective date of AD 2011-03-13,
Amendment 39-16597 (76 FR 6539, February 7, 2011)), using Bombardier
Service Bulletin 670BA-27-055, dated May 11, 2010, which is not
incorporated by reference in this AD.
(2) This paragraph provides credit for the actions required by
paragraph (j) of this AD, if those actions were performed before the
effective date of this AD using Bombardier Service Bulletin 670BA-
27-059, dated October 12, 2011; or Bombardier Service Bulletin
670BA-27-059, Revision A, dated March 8, 2012; which are not
incorporated by reference in this AD.
(l) 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. Send information 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. AMOCs approved previously in
accordance with AD 2011-03-13, Amendment 39-16597 (76 FR 6539,
February 7, 2011), are approved as AMOCs for 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
[[Page 7386]]
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.
(m) Related Information
(1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) Canadian Airworthiness Directive CF-2010-18R1, dated March
19, 2012, for related information. You may examine the MCAI in the
AD docket on the Internet at http://www.regulations.gov/#!documentDetail;D=FAA-2012-0997-0003.
(2) Service information identified in this AD that is not
incorporated by reference may be obtained at the addresses specified
in paragraphs (n)(5) and (n)(6) of this AD.
(n) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless this AD specifies otherwise.
(3) The following service information was approved for IBR on
March 14, 2014.
(i) Bombardier Service Bulletin 670BA-27-059, Revision B, dated
September 26, 2013.
(ii) Reserved.
(4) The following service information was approved for IBR on
March 14, 2011 (76 FR 6539, February 7, 2011).
(i) Bombardier Service Bulletin 670BA-27-055, Revision A, dated
August 6, 2010.
(ii) Reserved.
(5) 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; email [email protected]; Internet http://www.bombardier.com.
(6) You may view this 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.
(7) You may view this 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: http://www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued in Renton, Washington, on January 10, 2014.
Jeffrey E. Duven,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2014-02468 Filed 2-6-14; 8:45 am]
BILLING CODE 4910-13-P