AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).

ACTION: Final rule.

SUMMARY: We are superseding Airworthiness Directive (AD) 2008-08-09 for
certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 &
440) airplanes. AD 2008-08-09 required revising the airworthiness
limitations (AWL) section of the Instructions for Continued
Airworthiness by incorporating procedures for repetitive functional
tests of the pilot input lever of the pitch feel simulator (PFS) units
and corrective actions if necessary. This new AD requires replacing
certain PFS units with new redesigned PFS units, which would terminate
the repetitive functional tests; and both adding and removing certain
airplanes from the applicability. This AD was prompted by reports that
the shear pin in the input lever of several PFS units failed due to
fatigue; and by the development of a re-designed PFS unit, which
eliminates the need for repetitive functional tests. We are issuing
this AD to prevent undetected failure of the shear pins of both PFS
units simultaneously, which could result in loss of pitch feel forces
and consequent reduced control of the airplane.

DATES: This AD becomes effective August 19, 2014.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of August 19,
2014.

ADDRESSES: You may examine the AD docket on the Internet at http://www.regulations.gov/#!docketDetail;D=FAA-2013-0296; 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 Cote-Vertu Road West, Dorval, Quebec H4S 1Y9,
Canada; telephone 514-855-5000; fax 514-855-7401; email thd.crj@
aero.bombardier.com; 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 2008-08-09, Amendment 39-15461 (73 FR 19979,
April 14, 2008). AD 2008-08-09 applied to certain Bombardier, Inc.
Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. The NPRM
published in the Federal Register on April 9, 2013 (78 FR 21074).
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian Airworthiness Directive CF-
2005-41R1, dated May 10, 2012 (referred to after this as the Mandatory
Continuing Airworthiness Information, or ``the MCAI''), to correct an
unsafe condition for the specified products. The MCAI states:

The shear pin in the input lever of several Pitch Feel
Simulators (PFS) units has failed due to fatigue. The shear pin
failure is not always detectable by the flight crew in normal
operation. Failure of the shear pins in both PFS units on an
aeroplane could result in loss of pitch feel forces and reduced
controllability of the aeroplane.
Recently, Transport Canada has certified the new design of the
PFS unit--part number (P/N) 601R92300-7 as a terminating action.
Revision 1 of this [Canadian] AD mandates the retrofit of all in-
service CL-600-2B19 aeroplanes with the redesigned PFS unit.

Required actions include revising the AWLs section of the Instructions
for Continued Airworthiness, repetitive functional testing of the pilot
input lever of the PFS unit, and corrective actions if necessary, and
replacing the PFS units having part number (P/N) 601R92300-3 (vendor P/
N TY1910-50A) or 601R92300-5 (vendor P/N TY1910-51A) with PFS units
having P/N 601R92300-7 (vendor P/N TY1910-54A), which terminates the
actions required by AD 2008-08-09, Amendment 39-15461 (73 FR 19979,
April 14, 2008). This AD also adds airplanes having serial numbers (S/
Ns) 7991 through 7999 inclusive, and removes airplanes having S/Ns 8111
and subsequent. You may examine the MCAI in the AD docket on the
Internet at http://www.regulations.gov/#!docketDetail;D=FAA-2013-0296.

Comments

We gave the public the opportunity to participate in developing
this AD. The following presents the comments received on the NPRM (78
FR 21074, April 9, 2013) and the FAA's response to each comment.

Request To Revise the Applicability by Adding Part Numbers

Air Wisconsin Airlines Corporation (Air Wisconsin) requested that
we revise paragraph (c) of the proposed AD (78 FR 21074, April 9, 2013)
by adding the part numbers of the PFS units, in addition to the
airplane serial numbers. Air Wisconsin stated that the part numbers
that should be added are P/N 601R92300-3 (vendor P/N TY1910-50A) and
P/ N 601R92300-5 (vendor P/N TY1910-51A). Air Wisconsin provided no
justification for this request.
We do not agree to add the requested part numbers to the
applicability of this AD. The functional check of the input lever
required by this AD must be done on all airplanes having the serial
numbers identified in the applicability of this AD. We have made no
changes to paragraph (c) of this AD in this regard.

Request To Clarify Instructions Regarding Airworthiness Limitations

Air Wisconsin requested that we clarify how an operator is to
update the AWLs when the task for doing the functional test of the PFS
unit was deleted. Air Wisconsin stated that paragraph (g) of the
proposed AD (78 FR 21074, April 9, 2013) refers to Task R27-31-A024-01,
which was deleted by Bombardier on February 23, 2007. Air Wisconsin
pointed out that Task R27-31-A024-01 was specified in Bombardier
Temporary Revision (TR) 2B-1784, dated October 24, 2003, to the
Canadair CL-600-2B19 Regional Jet Maintenance Requirements Manual, Part
2, Appendix B, which is no longer available or relevant.
We agree. We removed proposed paragraph (g) (78 FR 21074, April 9,
2013) from this AD, and redesignated subsequent paragraphs accordingly.
The functional test specified in paragraph (h) of the proposed AD (78
FR 21074, April 9, 2013) (redesignated as paragraph (g) of this AD) is
now required in paragraph (g) of this AD.

Request To Revise Applicability To Exclude a Certain Serial Number

Air Wisconsin requested that we revise paragraph (h) of the
proposed AD (78 FR 21074, April 9, 2013) (redesignated as paragraph (g)
of this AD) to match the Effectivity section of Bombardier Alert
Service Bulletin A601R-27-144, Revision E, dated October 2, 2012. Air
Wisconsin stated that paragraph (h) of the proposed AD applies to
airplanes having S/Ns 7003 through 7990 inclusive, and S/Ns 8000
through 8111 inclusive. Air Wisconsin stated that, while the
Effectivity section of the service information varies between
revisions, Bombardier Alert Service Bulletin A601R-27-144, Revision E,
dated October 2, 2012, excludes the airplane having S/N 8111.
We agree with Air Wisconsin's request to revise the applicability
of this final rule for the reason provided. We have confirmed that the
airplane having S/N 8111 is not affected by the unsafe condition
addressed by this AD. Therefore, we have revised paragraphs (c) and (g)
of this AD (designated as paragraphs (c) and (h) of the proposed AD (78
FR 21074, April 9, 2013)) to remove the airplane having S/N 8111. We
have coordinated this change with TCCA and Bombardier.

Request To Clarify Instructions Regarding Functional Test

Air Wisconsin requested that we clarify how an operator is to
perform the functional test identified in paragraph (j) of the proposed
AD (78 FR 21074, April 9, 2013) (redesignated as paragraph (i) of this
AD) when the task for the functional test has been deleted. Air
Wisconsin stated that paragraph (j) of the proposed AD refers to Task
R27-31-A024-01, which was deleted by Bombardier on February 23, 2007.
Air Wisconsin stated that this task was specified in Bombardier TR 2B-
1784, dated October 24, 2003, to the Canadair CL-600-2B19 Regional Jet
Maintenance Requirements Manual, Part 2, Appendix B, which is no longer
available or relevant.
We agree for the reason stated by Air Wisconsin. We have revised
paragraph (i) of this AD (designated as paragraph (j) in the proposed
AD (78 FR 21074, April 9, 2013)) by removing the reference to Task R27-
31-A024-01.

Request To Revise Wording in Paragraph (k) of the Proposed AD (78 FR
21074, April 9, 2013)

Air Wisconsin requested that the term ``detected'' in paragraph (k)
of the proposed AD (78 FR 21074, April 9, 2013) (redesignated as
paragraph (j) of this AD) be changed to ``disconnected.'' Air Wisconsin
asserted that FAA's intent was probably to use the term ``disconnected.''
We partially agree. We agree that paragraph (j) of this AD (78 FR
21074, April 9, 2013) (designated as paragraph (k) of the proposed AD)
should read differently. Paragraph 2.B.(4)(c) of the Accomplishment
Instructions of Bombardier Service Bulletin A601R-27-144, Revision E,
dated October 2, 2012, states, ``If the input lever moves freely, or
the input lever is loose, the PFS is ``defective. . . .'' Therefore, we
have revised paragraphs (i) and (j) of this AD (designated as
paragraphs (j) and (k) of the proposed AD) by changing the word
``disconnected'' to ``defective.''

Request To Clarify Airplanes Affected by New PFS Unit Replacement

Air Wisconsin requested that paragraph (l) of the proposed AD (78
FR 21074, April 9, 2013) (redesignated as paragraph (k) of this AD) be
revised to add vendor P/Ns TY1910-50A, TY1910-51A, and TY1910-54A for
clarity.
We agree with Air Wisconsin's request to add vendor part numbers in
paragraph (k) of this AD (designated as paragraph (l) in the proposed
AD (78 FR 21074, April 9, 2013). We have revised paragraph (k) of this
AD by adding the vendor part numbers with the manufacturer part
numbers.

Request To Add Compliance Time When Total Flight Hours are Unknown

Air Wisconsin requested that paragraph (l) of the proposed AD (78
FR 21074, April 9, 2013) (redesignated as paragraph (k) of this AD) be
revised to add a replacement compliance time for PFS units on which the
total flight hours are unknown. Air Wisconsin suggested the compliance
time for PFS units with unknown total flight hours be 3,000 flight
hours or 18 months after the effective date of this AD.
We agree with Air Wisconsin's request to specify a compliance time
for PFS units with unknown total flight hours. We have revised
paragraph (k)(4) of this AD (78 FR 21074, April 9, 2013) to add the
suggested compliance time for PFS units having P/N 601R92300-3 (vendor
P/N TY1910-50A) or 601R92300-5 (vendor P/N TY1910-51A) for which the
total flight hours are unknown or cannot be determined.

Explanation of Changes Made to This AD

We have reformatted paragraph (l) of this AD (designated as
paragraph (m) of the proposed AD (78 FR 21074, April 9, 2013).
We have added new paragraph (l)(1) to this AD. Paragraph (l)(1) of
this AD gives credit for doing a functional test if done before the
effective date of AD 2006-05-11 R1, Amendment 39-14528 (71 FR 15323,
March 28, 2006), using Bombardier Alert Service Bulletin A601R-27-144,
including Appendix A, dated September 15, 2005.
We redesignated paragraphs (m)(1), (m)(1)(i), (m)(1)(ii), and
(m)(2) of the proposed AD (78 FR 21074, April 9, 2013) as paragraphs
(l)(2), (l)(2)(i), (l)(2)(ii), and (l)(5) of this AD.

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 (78 FR 21074, April 9, 2013) for correcting the unsafe condition;
and
Do not add any additional burden upon the public than was
already proposed in the NPRM (78 FR 21074, April 9, 2013).

Costs of Compliance

We estimate that this AD affects 574 airplanes of U.S. registry.
The actions that are required by AD 2008-08-09, Amendment 39-15461
(73 FR 19979, April 14, 2008), and retained in this AD take about 2
work-hours per product, at an average labor rate of $85 per work-hour.
Required parts cost $0 per product. Based on these figures, the
estimated cost of the actions that were required by AD 2008-08-09 is
$170 per product.
We also estimate that it will take about 8 work-hours per product
to comply with the new basic requirements of this AD. The average labor
rate is $85 per work-hour. Required parts will cost about $2,500 per
product. Where the service information lists required parts costs that
are covered under warranty, we have assumed that there will be no
charge for these parts. As we do not control warranty coverage for
affected parties, some parties may incur costs higher than estimated
here. Based on these figures, we estimate the cost of this AD on U.S.
operators to be $1,825,320, or $3,180 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 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 AD docket on the Internet at http://www.regulations.gov/#!docketDetail;D=FAA-2013-0296; or in person
at the Docket Management Facility 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

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]

2. The FAA amends Sec. 39.13 by removing Airworthiness Directive (AD)
2008-08-09, Amendment 39-15461 (73 FR 19979, April 14, 2008), and
adding the following new AD: