[Federal Register: March 4, 2003 (Volume 68, Number 42)]
[Rules and Regulations]
[Page 10156-10157]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr04mr03-7]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 2002-NM-93-AD; Amendment 39-13076; AD 2003-04-27]
RIN 2120-AA64
Airworthiness Directives; Bombardier Model CL-600-2C10 Series
Airplanes
AGENCY: Federal Aviation Administration, DOT.
ACTION: Final rule.
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SUMMARY: This amendment adopts a new airworthiness directive (AD),
applicable to all Bombardier CL-600-2C10 series airplanes, that
requires revising the Airworthiness Limitations Section of the
Instructions for Continued Airworthiness to incorporate functional and
operational checks of the active and standby actuators of the rudder
travel limiter (RTL) system. The actions specified by this AD are
intended to prevent a significant latent failure in the RTL, which
could lead to a critical loss of RTL function under certain conditions,
and consequent loss of controllability of the airplane or structural
damage. This action is intended to address the identified unsafe
condition.
DATES: Effective April 8, 2003.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of April 8, 2003.
ADDRESSES: 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 Federal Aviation Administration
(FAA), Transport Airplane Directorate, Rules Docket, 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: A proposal to amend part 39 of the Federal
Aviation Regulations (14 CFR part 39) to include an airworthiness
directive (AD) that is applicable to all Bombardier CL-600-2C10 series
airplanes was published in the Federal Register on September 25, 2002
(67 FR 60187). That action proposed to require revising the
Airworthiness Limitations Section of the Instructions for Continued
Airworthiness to incorporate functional and operational checks of the
active and standby actuators of the rudder travel limiter (RTL) system.
Comments
Interested persons have been afforded an opportunity to participate
in the making of this amendment. No comments were submitted in response
to the proposal or the FAA's determination of the cost to the public.
Explanation of Change to Final Rule
We have revised this final rule to specify that the accountable
Aircraft Certification Office (ACO) is the New York ACO, 10 Fifth
Street, Third Floor, Valley Stream, New York, not the Atlanta ACO.
Conclusion
The FAA has determined that air safety and the public interest
require the adoption of the rule with the change described previously.
The FAA has determined that this change will neither increase the
economic burden on any operator nor increase the scope of the AD.
Cost Impact
The FAA estimates that 15 Model CL-600-2C10 series airplanes of
U.S. registry will be affected by this AD, that it will take
approximately 1 work hour per airplane to accomplish the required
actions, and that the average labor rate is $60 per work hour. Based on
these figures, the cost impact of the AD on U.S. operators is estimated
to be $900, or $60 per airplane.
The cost impact figure discussed above is based on assumptions that
no operator has yet accomplished any of the requirements of this AD
action, and that no operator would accomplish those actions in the
future if this AD were not adopted. The cost impact figures discussed
in AD rulemaking actions represent only the time necessary to perform
the specific actions actually required by the AD. These figures
typically do not include incidental costs, such as the time required to
gain access and close up, planning time, or time necessitated by other
administrative actions.
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.
For the reasons discussed above, I certify that this action (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); 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. A final evaluation has been prepared for this action
and it is contained in the Rules Docket. A copy of it 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
[[Page 10157]]
Administration amends part 39 of the Federal Aviation Regulations (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. Section 39.13 is amended by adding the following new
airworthiness directive:
2003-04-27 Bombardier, Inc. (Formerly Canadair): Amendment 39-13076.
Docket 2002-NM-93-AD.
Applicability: All Model CL-600-2C10 series airplanes,
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 (c) 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 prevent a significant latent failure in the rudder travel
limiter (RTL), which could lead to a critical loss of RTL function
under certain conditions, and consequent loss of controllability of the
airplane or structural damage, accomplish the following:
Revise Airworthiness Limitations Section
(a) Within 30 days of the effective date of this AD, revise the
Airworthiness Limitations Section of the Instructions for Continued
Airworthiness by incorporating the tasks of the Temporary Revisions of
Part 2 of the Maintenance Requirements Manual (MRM), Section 1,
Appendix A, Certification Maintenance Requirements; as listed in the
following table; into the Airworthiness Limitations Section:
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CRJ 700 regional jet temporary revision Task number Task description
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MRM2-41, dated September 28, 2001........................... 27-20-00-108 RTL standby actuator
(with SSCU part number
(P/N) C13045BA01):
Operational check of
the RTL standby
actuator.
MRM2-42, dated September 28, 2001........................... 27-20-00-107 RTL active and standby
actuators (with SSCU P/
N C13045BA02):
Functional check of the
RTL active and standby
actuators.
MRM2-43, dated September 28, 2001........................... 27-20-00-102 RTL active and standby
actuators (with SSCU P/
N C13045BA02):
Operational check of
the RTL active and
standby actuators.
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(b) Thereafter, except as provided by paragraph (c) of this AD, no
alternative operational and functional checks or check intervals may be
approved for the task numbers specified in the temporary revisions
listed in paragraph (a) of this AD.
Alternative Methods of Compliance
(c) 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 Aircraft Certification Office
(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
(d) 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
(e) The action shall be done in accordance with CRJ 700 Regional
Jet, Temporary Revision MRM2-41, dated September 28, 2001; CRJ 700
Regional Jet, Temporary Revision MRM2-42, dated September 28, 2001; and
CRJ 700 Regional Jet, Temporary Revision MRM2-43, dated September 28,
2001. 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 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.
Note 3: The subject of this AD is addressed in Canadian
airworthiness directive CF-2002-06, dated January 21, 2002.
Effective Date
(f) This amendment becomes effective on April 8, 2003.
Issued in Renton, Washington, on February 24, 2003.
Ali Bahrami,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 03-4852 Filed 3-3-03; 8:45 am]
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