[Federal Register: November 14, 2005 (Volume 70, Number 218)]
[Rules and Regulations]
[Page 69073-69075]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr14no05-16]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2005-22867; Directorate Identifier 2005-NM-209-AD;
Amendment 39-14359; AD 2005-23-01]
RIN 2120-AA64
Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional
Jet Series 100 & 440) Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule; request for comments.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440)
airplanes. This AD requires revising the Airworthiness Limitations
section of the Instructions for Continued Airworthiness of the Canadair
Regional Jet Maintenance Requirements Manual by incorporating new
procedures for repetitive detailed and special detailed inspections for
cracking of the aft pressure bulkhead. This AD results from a fatigue
test, which revealed cracking of the aft pressure bulkhead; subsequent
in-service reports show that fatigue cracking has been found on other
airplanes. We are issuing this AD to detect and correct cracking in the
aft pressure bulkhead, which could result in reduced structural
integrity and rapid decompression of the airplane.
DATES: This AD becomes effective November 29, 2005.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in the AD as of November 29,
2005.
We must receive comments on this AD by January 13, 2006.
ADDRESSES: Use one of the following addresses to submit comments on
this AD.
DOT Docket Web site: Go to http://dms.dot.gov and follow
the instructions for sending your comments electronically.
Government-wide rulemaking Web site: Go to http://www.regulations.gov
and follow the instructions for sending your
comments electronically.
Mail: Docket Management Facility; U.S. Department of
Transportation, 400 Seventh Street SW., Nassif Building, room PL-401,
Washington, DC 20590.
Fax: (202) 493-2251.
Hand Delivery: Room PL-401 on the plaza level of the
Nassif Building, 400 Seventh Street SW., Washington, DC, between 9 a.m.
and 5 p.m., Monday through Friday, except Federal holidays.
Contact Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087,
Station Centre-ville, Montreal, Quebec H3C 3G9, Canada, for service
information identified in this AD.
FOR FURTHER INFORMATION CONTACT: Richard Beckwith, Aerospace Engineer,
Airframe and Propulsion Branch, ANE-171, FAA, New York Aircraft
Certification Office, 1600 Stewart Avenue, suite 410, Westbury, New
York 11590; telephone (516) 228-7302; fax (516) 794-5531.
SUPPLEMENTARY INFORMATION:
Discussion
Transport Canada Civil Aviation (TCCA), which is the airworthiness
authority for Canada, notified us that an unsafe condition may exist on
certain Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440)
airplanes. TCCA advises that during a complete aircraft fatigue test,
cracking of the aft pressure bulkhead was found. Subsequent in-service
reports show that fatigue cracking has been found on airplanes with as
few as 17,821 total flight cycles. This condition, if not corrected,
could result in reduced structural integrity and rapid decompression of
the airplane.
Relevant Service Information
Bombardier has issued Canadair Regional Jet Temporary Revision (TR)
2B-2109, dated October 13, 2005, to the Canadair Regional Jet
Maintenance Requirements Manual (MRM), Part 2, Appendix B,
``Airworthiness Limitations.'' This TR incorporates repetitive special
detailed and detailed inspections for cracking of the aft pressure
bulkhead, in accordance with the procedures specified in the applicable
task identified in the TR, into the MRM. TCCA mandated airworthiness
limitations (AWL) Number 53-61-153 of the TR and issued Canadian
airworthiness directive CF-2005-13R1, dated October 6, 2005, to ensure
the continued airworthiness of these airplanes in Canada.
FAA's Determination and Requirements of This AD
This airplane model is manufactured in Canada and is type
certificated for operation in the United States under the provisions of
section 21.29 of the Federal Aviation Regulations (14 CFR 21.29) and
the applicable bilateral airworthiness agreement. Pursuant to this
bilateral airworthiness agreement, TCCA has kept the FAA informed of
the situation described above. We have examined TCCA's findings,
evaluated all pertinent information, and determined that we need to
issue an AD for products of this type design that are certificated for
operation in the United States.
Therefore, we are issuing this AD to detect and correct cracking in
the aft pressure bulkhead, which could result in reduced structural
integrity and rapid decompression of the airplane. This AD requires
revising the AWL section of the Instructions for Continued
Airworthiness of the Canadair Regional
[[Page 69074]]
Jet MRM by incorporating new repetitive detailed and special detailed
inspections for cracking of the aft pressure bulkhead. This AD requires
incorporating the actions specified in AWL Number 53-61-153 of the TR
described previously into the Canadair Regional Jet MRM.
Difference Between the AD and Canadian Airworthiness Directive
The initial compliance times specified in the Canadian
airworthiness directive are different than those that are required by
this AD. The Canadian airworthiness directive contains a phase-in
period based on a previous issue of that airworthiness directive; this
AD does not include those compliance times. This difference has been
coordinated with TCCA.
FAA's Determination of the Effective Date
An unsafe condition exists that requires the immediate adoption of
this AD; therefore, providing notice and opportunity for public comment
before the AD is issued is impracticable, and good cause exists to make
this AD effective in less than 30 days.
Comments Invited
This AD is a final rule that involves requirements that affect
flight safety and was not preceded by notice and an opportunity for
public comment; however, we invite you to submit any relevant written
data, views, or arguments regarding this AD. Send your comments to an
address listed in the ADDRESSES section. Include ``Docket No. FAA-2005-
22867; Directorate Identifier 2005-NM-209-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of the AD that might
suggest a need to modify it.
We will post all comments we receive, without change, to http://dms.dot.gov
, including any personal information you provide. We will
also post a report summarizing each substantive verbal contact with FAA
personnel concerning this AD. Using the search function of that Web
site, anyone can find and read the comments in any of our dockets,
including the name of the individual who sent the comment (or signed
the comment on behalf of an association, business, labor union, etc.).
You may review the DOT's complete Privacy Act Statement in the Federal
Register published on April 11, 2000 (65 FR 19477-78), or you may visit
http://dms.dot.gov.
Examining the Docket
You may examine the AD docket on the Internet at http://dms.dot.gov
, or in person at the Docket Management Facility office
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The Docket Management Facility office (telephone (800) 647-
5227) is located on the plaza level of the Nassif Building at the DOT
street address stated in the ADDRESSES section. Comments will be
available in the AD docket shortly after the Docket Management System
receives them.
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 have 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 the regulation:
1. Is not a ``significant regulatory action'' under Executive Order
12866;
2. Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979); 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. See the ADDRESSES
section for a location to examine the regulatory evaluation.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
0
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 Federal Aviation Administration (FAA) amends Sec. 39.13 by
adding the following new airworthiness directive (AD):
2005-23-01 Bombardier, Inc. (Formerly Canadair): Amendment 39-14359.
Docket No. FAA-2005-22867; Directorate Identifier 2005-NM-209-AD.
Effective Date
(a) This AD becomes effective November 29, 2005.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Bombardier Model CL-600-2B19 (Regional
Jet Series 100 & 440) airplanes, certificated in any category,
having serial numbers 7003 through 8025 inclusive, 8030 and 8034.
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) of this AD. The request should include a
description of changes to the required inspections that will ensure
the continued damage tolerance of the affected structure. The FAA
has provided guidance for this determination in Advisory Circular
(AC) 25-1529.
Unsafe Condition
(d) This AD results from a fatigue test which revealed cracking
of the aft pressure bulkhead; subsequent in-service reports show
that fatigue cracking has been found on certain other airplanes. We
are issuing this AD to detect and correct cracking in the aft
pressure bulkhead, which could result in reduced structural
integrity and rapid decompression of the airplane.
[[Page 69075]]
Compliance
(e) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.
Revision to the Airworthiness Limitations (AWL) Section
(f) Within 30 days after the effective date of this AD: Revise
the Airworthiness Limitations section of the Instructions for
Continued Airworthiness of the Canadair Regional Jet Maintenance
Requirements Manual (MRM), Part 2, Appendix B, ``Structural
Airworthiness Limitations'' by incorporating the information
specified in AWL Number 53-61-153 of the Canadair Regional Jet
Temporary Revision (TR) 2B-2109, dated October 13, 2005, into the
AWL section. Perform the applicable detailed and special detailed
inspections for cracking of the aft pressure bulkhead, as specified
in the TR, at the applicable compliance time specified in Table 1 of
this AD. Repeat the detailed inspection thereafter at intervals not
to exceed 1,085 flight cycles, and repeat the special detailed
inspection thereafter at intervals not to exceed 4,360 flight
cycles, in accordance with the procedures specified in Structural
Airworthiness Limitations, AWL Number 53-61-153, as introduced by
the MRM.
Table 1.--Compliance Times for Initial Inspections
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As of the effective date of this AD: If
the total flight cycles accumulated on Inspect before the airplane
the airplane are-- accumulates--
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8,000 or fewer......................... 12,000 total flight cycles.
More than 8,000 but fewer than 12,000.. 15,000 total flight cycles or
within 4,000 flight cycles
after the effective date of
this AD, whichever is first.
12,000 or more but fewer than 15,000... 17,000 total flight cycles or
within 3,000 flight cycles
after the effective date of
this AD, whichever is first.
15,000 or more but fewer than 17,000... 18,500 total flight cycles or
within 2,000 flight cycles
after the effective date of
this AD, whichever is first.
17,000 or more but fewer than 18,500... 19,500 total flight cycles or
within 1,500 flight cycles
after the effective date of
this AD, whichever is first.
18,500 or more but fewer than 19,500... 20,000 total flight cycles or
within 1,000 flight cycles
after the effective date of
this AD, whichever is first.
19,500 or more......................... 500 flight cycles after the
effective date of this AD.
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(g) When the information in AWL Number 53-61-153 of the Canadair
Regional Jet TR 2B-2109, dated October 13, 2005, is included in the
general revisions of the MRM, the general revisions may be inserted
into the AWL section of the Instructions for Continued
Airworthiness, and this information may be removed from the MRM.
Alternative Methods of Compliance (AMOCs)
(h)(1) The Manager, New York Aircraft Certification Office, FAA,
has the authority to approve AMOCs for this AD, if requested in
accordance with the procedures found in 14 CFR 39.19.
(2) Before using any AMOC approved in accordance with Sec.
39.19 on any airplane to which the AMOC applies, notify the
appropriate principal inspector in the FAA Flight Standards
Certificate Holding District Office.
Related Information
(i) Canadian airworthiness directive CF-2005-13R1, dated October
6, 2005, also addresses the subject of this AD.
Material Incorporated by Reference
(j) You must use Canadair Regional Jet Temporary Revision 2B-
2109, dated October 13, 2005, to the Canadair Regional Jet
Maintenance Requirements Manual, Part 2, Appendix B, ``Airworthiness
Limitations,'' to perform the actions that are required by this AD,
unless the AD specifies otherwise. The Director of the Federal
Register approved the incorporation by reference of this document in
accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact
Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087, Station
Centre-ville, Montreal, Quebec H3C 3G9, Canada, for a copy of this
service information. You may review copies at the Docket Management
Facility, U.S. Department of Transportation, 400 Seventh Street SW.,
room PL-401, Nassif Building, Washington, DC; on the Internet at
http://dms.dot.gov; or at the National Archives and Records
Administration (NARA). For information on the availability of this
material at the NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_
register/code--of--federal-- regulations/
ibr--locations.html.
Issued in Renton, Washington, on October 31, 2005.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-22309 Filed 11-10-05; 8:45 am]
BILLING CODE 4910-13-P