[Federal Register: April 29, 2003 (Volume 68, Number 82)]
[Rules and Regulations]
[Page 22587-22589]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr29ap03-7]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 2003-NM-54-AD; Amendment 39-13133; AD 2003-09-04]
RIN 2120-AA64
Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional
Jet Series 100 & 440) Airplanes
AGENCY: Federal Aviation Administration, DOT.
ACTION: Final rule; request for comments.
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SUMMARY: This amendment adopts a new airworthiness directive (AD) that
is applicable to certain Bombardier Model CL-600-2B19 (Regional Jet
series 100 & 440) airplanes. This action requires revising the
airworthiness limitations section of the Instructions for Continued
Airworthiness by incorporating new structural inspection intervals for
the pressure floor skin of the center fuselage at fuselage stations 460
and 513; repair if necessary; and submission of inspection findings to
the airplane manufacturer. This action is necessary to detect and
correct in a timely manner fatigue cracks of the pressure floor skin of
the center fuselage at fuselage stations 460 and 513, which could
result in failure of the pressure floor skin and consequent rapid
decompression of the airplane during flight. This action is intended to
address the identified unsafe condition.
DATES: Effective May 14, 2003.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of May 14, 2003.
Comments for inclusion in the Rules Docket must be received on or
before May 29, 2003.
ADDRESSES: Submit comments in triplicate to the Federal Aviation
Administration (FAA), Transport Airplane Directorate, ANM-114,
Attention: Rules Docket No. 2003-NM-54-AD, 1601 Lind Avenue, SW.,
Renton, Washington 98055-4056. Comments may be inspected at this
location between 9 a.m. and 3 p.m., Monday through Friday, except
Federal holidays. Comments may be submitted via fax to (425) 227-1232.
Comments may also be sent via the Internet using the following address:
9-anm-iarcomment@faa.gov. Comments sent via the Internet must contain
``Docket No. 2003-NM-54-AD'' in the subject line and need not be
submitted in triplicate. Comments sent via fax or the Internet as
attached electronic files must be formatted in Microsoft Word 97 for
Windows or ASCII text.
The service information referenced in this AD may be obtained from
Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087, Station
Centre-ville, Montreal, Quebec H3C 3G9, Canada. This information may be
examined at the FAA, Transport Airplane Directorate, 1601 Lind Avenue,
SW., Renton, Washington; or at the FAA, New York Aircraft Certification
Office, 10 Fifth Street, Third Floor, Valley Stream, New York; or at
the Office of the Federal Register, 800 North Capitol Street, NW.,
suite 700, Washington, DC.
FOR FURTHER INFORMATION CONTACT: Dan Parrillo, Aerospace Engineer,
Systems and Flight Test Branch, ANE-172, FAA, New York Aircraft
Certification Office, 10 Fifth Street, Third Floor, Valley Stream, New
York 11581; telephone (516) 256-7505; fax (516) 568-2716.
SUPPLEMENTARY INFORMATION: Transport Canada Civil Aviation (TCCA),
which is the airworthiness authority for Canada, notified the FAA that
an unsafe condition may exist on certain Bombardier Model CL-600-2B19
(Regional Jet series 100 & 440) airplanes. TCCA advises that fatigue
cracks were found on the pressure floor skin of the center fuselage at
fuselage stations 460 and 513. This condition, if not corrected, could
result in failure of the pressure floor skin and consequent rapid
decompression of the airplane during flight.
Explanation of Canadian Airworthiness Directive and Relevant Service
Information
TCCA issued Canadian airworthiness directive CF-2002-39, effective
October 25, 2002, in order to assure the continued airworthiness of
these airplanes in Canada. The Canadian airworthiness directive
requires revising the Transport Canada-approved maintenance schedule by
incorporating the revised inspection requirements for airworthiness
limitations (AWL) as introduced in Canadair Temporary Revision (TR) 2B-
1230, Canadair Regional Jet Maintenance Requirements Manual, Part 2,
Appendix B, ``Airworthiness Limitations,'' approved on July 26, 2002,
by TCCA. The TR describes new structural inspection intervals for the
pressure floor skin of the center fuselage at fuselage stations 460 and
513. The Canadian airworthiness directive also requires repair of any
crack per the airplane manufacturer and submission of inspection
findings to the airplane manufacturer. Accomplishment of these actions
is intended to adequately address the identified unsafe condition.
FAA's Conclusions
This airplane model is manufactured in Canada and is type
certificated for operation in the United States under the provisions of
Sec. 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. The FAA has examined the findings of
TCCA, reviewed all available information, and determined that AD action
is necessary for products of this type design that are certificated for
operation in the United States.
Explanation of Requirements of Rule
Since an unsafe condition has been identified that is likely to
exist or develop on other airplanes of the same
[[Page 22588]]
type design registered in the United States, this AD is being issued to
detect and correct in a timely manner fatigue cracks of the pressure
floor skin of the center fuselage at fuselage stations 460 and 513,
which could result in failure of the pressure floor skin and consequent
rapid decompression of the airplane during flight. This AD requires
revising the AWL section of the Instructions for Continued
Airworthiness by incorporating new structural inspection intervals for
the pressure floor skin of the center fuselage at fuselage stations 460
and 513; repair if necessary; and submission of inspection findings to
the airplane manufacturer. The AWL revision is required to be
accomplished per the TR described previously.
Differences Between the AD and Canadian Airworthiness Directive
Operators should note that, although the Canadian airworthiness
directive requires that TCCA be contacted only for disposition of the
repair conditions, this AD would require the repair of those conditions
to be accomplished per a method approved by either the FAA, or TCAA (or
its delegated agent). In light of the type of repair that will be
required to address the identified unsafe condition, and in consonance
with existing bilateral airworthiness agreements, the FAA has
determined that, for this AD, a repair approved by either the FAA or
TCAA will be acceptable for compliance with this AD.
Determination of Rule's Effective Date
Since a situation exists that requires the immediate adoption of
this regulation, it is found that notice and opportunity for prior
public comment hereon are impracticable, and that good cause exists for
making this amendment effective in less than 30 days.
Comments Invited
Although this action is in the form of a final rule that involves
requirements affecting flight safety and, thus, was not preceded by
notice and an opportunity for public comment, comments are invited on
this rule. Interested persons are invited to comment on this rule by
submitting such written data, views, or arguments as they may desire.
Communications shall identify the Rules Docket number and be submitted
in triplicate to the address specified under the caption ADDRESSES. All
communications received on or before the closing date for comments will
be considered, and this rule may be amended in light of the comments
received. Factual information that supports the commenter's ideas and
suggestions is extremely helpful in evaluating the effectiveness of the
AD action and determining whether additional rulemaking action would be
needed.
Submit comments using the following format:
[sbull] Organize comments issue-by-issue. For example, discuss a
request to change the compliance time and a request to change the
service bulletin reference as two separate issues.
[sbull] For each issue, state what specific change to the AD is
being requested.
[sbull] Include justification (e.g., reasons or data) for each
request.
Comments are specifically invited on the overall regulatory,
economic, environmental, and energy aspects of the rule that might
suggest a need to modify the rule. All comments submitted will be
available, both before and after the closing date for comments, in the
Rules Docket for examination by interested persons. A report that
summarizes each FAA-public contact concerned with the substance of this
AD will be filed in the Rules Docket.
Commenters wishing the FAA to acknowledge receipt of their comments
submitted in response to this rule must submit a self-addressed,
stamped postcard on which the following statement is made: ``Comments
to Docket Number 2003-NM-54-AD.'' The postcard will be date stamped and
returned to the commenter.
Regulatory Impact
The regulations adopted herein 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. Therefore, it
is determined that this final rule does not have federalism
implications under Executive Order 13132.
The FAA has determined that this regulation is an emergency
regulation that must be issued immediately to correct an unsafe
condition in aircraft, and that it is not a ``significant regulatory
action'' under Executive Order 12866. It has been determined further
that this action involves an emergency regulation under DOT Regulatory
Policies and Procedures (44 FR 11034, February 26, 1979). If it is
determined that this emergency regulation otherwise would be
significant under DOT Regulatory Policies and Procedures, a final
regulatory evaluation will be prepared and placed in the Rules Docket.
A copy of it, if filed, may be obtained from the Rules Docket at the
location provided under the caption ADDRESSES.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
Accordingly, pursuant to the authority delegated to me by the
Administrator, the Federal Aviation Administration amends part 39 of
the Federal Aviation Regulations (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. Section 39.13 is amended by adding the following new airworthiness
directive:
2003-09-04 Bombardier, Inc. (formerly Canadair): Amendment 39-13133.
Docket 2003-NM-54-AD.
Applicability: Model CL-600-2B19 (Regional Jet series 100 & 440)
airplanes, serial numbers 7003 through 7999 inclusive; certificated
in any category.
Note 1: This AD requires revisions to certain operator
maintenance documents to include new inspections. Compliance with
these inspections is required by 14 CFR Part 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 part 91.403(c), the operator
must request approval for an alternative method of compliance in
accordance with paragraph (d) 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.
Compliance: Required as indicated, unless accomplished
previously.
To detect and correct in a timely manner fatigue cracks of the
pressure floor skin of the center fuselage at fuselage stations 460
and 513, which could result in failure of the pressure floor skin
and consequent rapid decompression of the airplane during flight,
accomplish the following:
Revise Airworthiness Limitations (AWL) Section
(a) Within 14 days after the effective date of this AD, revise
the AWL section of the Instructions for Continued Airworthiness by
inserting a copy of Canadair Temporary Revision 2B-1230, Canadair
Regional Jet Maintenance Requirements Manual, Part 2, Appendix B,
``Airworthiness Limitations,'' approved on July 26, 2002, by TCCA,
into the AWL section. Thereafter, except as provided in paragraph
(d) of this AD, no alternative
[[Page 22589]]
structural inspection intervals may be approved for the pressure
floor skin of the center fuselage at fuselage stations 460 and 513.
Repair and Revise AWL section
(b) If any crack is found during any inspection required by
paragraph (a) of this AD, before further flight, do the actions
specified in paragraphs (b)(1) and (b)(2) of this AD.
(1) Repair per a method approved by either the Manager, New York
Aircraft Certification Office (ACO), FAA; or Transport Canada Civil
Aviation (TCCA) (or its delegated agent).
(2) Revise the AWL section of the Instructions for Continued
Airworthiness by inserting a copy of the new airworthiness
limitation and inspection requirements associated with the FAA- or
TCCA-approved repair referred to in paragraph (b)(1) of this AD into
the Canadair Regional Jet Maintenance Requirements Manual, Part 2,
Appendix B, ``Airworthiness Limitations'' section. Thereafter,
except as provided in paragraph (d) of this AD, no alternative
structural inspection intervals specified in the TCCA-approved
repair may be approved for the pressure floor skin of the center
fuselage at fuselage stations 460 and 513.
Reporting
(c) Within 30 days after each inspection required by this AD,
submit a report of the inspection results (both positive and
negative findings) to Bombardier, Inc., Canadair, Aerospace Group,
P.O. Box 6087, Station Centre-ville, Montreal, Quebec H3C 3G9,
Canada; telephone (514) 855-5001, extension 58500; fax (514) 855-
8501. Information collection requirements contained in this AD have
been approved by the Office of Management and Budget (OMB) under the
provisions of the Paperwork Reduction Act of 1980 (44 U.S.C. 3501 et
seq.) and have been assigned OMB Control Number 2120-0056.
Alternative Methods of Compliance
(d) An alternative method of compliance or adjustment of the
compliance time that provides an acceptable level of safety may be
used if approved by the Manager, New York ACO, FAA. Operators shall
submit their requests through an appropriate FAA Principal
Maintenance Inspector, who may add comments and then send it to the
Manager, New York ACO.
Note 2: Information concerning the existence of approved
alternative methods of compliance with this AD, if any, may be
obtained from the New York ACO.
Special Flight Permits
(e) Special flight permits may be issued in accordance with
Sec. Sec. 21.197 and 21.199 of the Federal Aviation Regulations (14
CFR 21.197 and 21.199) to operate the airplane to a location where
the requirements of this AD can be accomplished.
Incorporation by Reference
(f) Unless otherwise specified in this AD, the AWL revision
shall be done in accordance with Canadair Temporary Revision 2B-
1230, Canadair Regional Jet Maintenance Requirements Manual, Part 2,
Appendix B, ``Airworthiness Limitations,'' approved on July 26,
2002, by TCCA (The approval date of this document is indicated only
on page 2 of 2). This incorporation by reference was approved by the
Director of the Federal Register in accordance with 5 U.S.C. 552(a)
and 1 CFR part 51. Copies may be obtained from Bombardier, Inc.,
Canadair, Aerospace Group, P.O. Box 6087, Station Centre-ville,
Montreal, Quebec H3C 3G9, Canada. Copies may be inspected at the
FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton,
Washington; or the FAA, New York Aircraft Certification Office, 10
Fifth Street, Third Floor, Valley Stream, New York; or at the Office
of the Federal Register, 800 North Capitol Street, NW., suite 700,
Washington, DC.
Note 3: The subject of this AD is addressed in Canadian
airworthiness directive CF-2002-39, effective date October 25, 2002.
Effective Date
(g) This amendment becomes effective on May 14, 2003.
Issued in Renton, Washington, on April 21, 2003.
Michael J. Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 03-10235 Filed 4-28-03; 8:45 am]
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