[Federal Register: June 6, 2003 (Volume 68, Number 109)]
[Rules and Regulations]
[Page 33854-33856]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr06jn03-8]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 2000-NM-311-AD; Amendment 39-13179; AD 2003-11-20]
RIN 2120-AA64
Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional
Jet Series 100 & 440) Airplanes
AGENCY: Federal Aviation Administration, DOT.
ACTION: Final rule.
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SUMMARY: This amendment supersedes an existing airworthiness directive
(AD), applicable to certain Bombardier Model CL-600-2B19 (Regional Jet
Series 100 & 440) airplanes, that currently requires repetitive
lubrication of the slide shaft of the input plunger of the brake
control valve assembly. This amendment adds requirements for modifying
the brake control valve assembly, which terminates the repetitive
lubrications required by the existing AD. This amendment also adds
subsequent repetitive lubrications of the valve utilizing the grease
fittings installed during the modification. This amendment is prompted
by reports of temporary loss of braking action upon landing. The
actions specified by this AD are intended to prevent temporary loss of
braking action due to the freezing of moisture on the input plunger of
the brake control valve during steep descent.
DATES: Effective July 11, 2003.
The incorporation by reference of Bombardier Service Bulletin 601R-
32-017, dated November 9, 1993, as listed in the regulations, is
approved by the Director of the Federal Register as of July 11, 2003.
The incorporation by reference of Canadair Regional Jet Alert
Service Bulletin S.B.A601R-32-016, dated October 14, 1993, as listed in
the regulations, was approved previously by the Director of the Federal
Register as of February 4, 1994 (59 FR 2952, January 20, 1994).
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 (ACO), 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 ACO, 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) by superseding AD 93-21-04,
amendment 39-8801 (59 FR 2952, January 20, 1994), which is applicable
to certain Bombardier Model CL-600-2B19 (Regional Jet series 100)
series airplanes, was published in the Federal Register on January 13,
2003 (68 FR 1566). The action proposed to require repetitive
lubrication of the slide shaft of the input plunger of the brake
control valve assembly; modification of the brake control valve
assembly, which would terminate the repetitive lubrications required by
the existing AD; and subsequent repetitive lubrications of the valve
utilizing the grease fittings that are installed during the
modification.
Comments
Interested persons have been afforded an opportunity to participate
in the making of this amendment. Due consideration has been given to
the comments received.
Request To Revise Identification of Regional Jet Series 100
One commenter requests that the proposed AD be revised to either
remove the reference to ``Regional Jet Series 100'' in association with
the affected airplanes throughout the document or add a reference to
series 440 airplanes. The commenter explains that the proposed AD
applies to Model CL-600-2B19 airplanes. The type certificate data sheet
(TCDS) identifies the affected airplane model as ``CL-600-2B19
(Regional Jet Series 100 & 440).'' The commenter suggests that the
references to this airplane model should be revised to reflect both the
100 and 440 series.
The FAA concurs with the request. After the proposed AD was issued,
the TCDS was revised to incorporate this change. The final rule has
been revised accordingly to correctly identify the affected airplanes
where appropriate.
Request To Incorporate AD Actions Into the Maintenance Program
Paragraph (c) of the proposed AD proposed to require repetitive
[[Page 33855]]
lubrication of the brake control valve in accordance with Bombardier
Service Bulletin 601R-32-017. One commenter requests that the proposed
AD be revised to instead require incorporation of the lubrication task
(task 32-43-06-05 of the CL-600-2B19 Maintenance Requirements Manual
(MRM)) into the approved maintenance program. The commenter asserts
that the lubrication task, if incorporated into the MRM, would be
considered a routine task subject to normal maintenance program
development and escalation. The commenter adds that incorporating the
task into the MRM would terminate the repetitive lubrication
requirements specified in the proposed AD.
The FAA does not concur with the request. An AD's requirements are
mandated for all affected airplanes, but the applicable section of the
MRM (Part 1, CSP A-053) is not approved by the FAA (although it is
``accepted''). Consequently, the FAA does not control revisions to Part
1 of the MRM. If a task were to be subsequently altered or deleted, the
intent of the AD would then become nullified. However, under the
provisions of 14 CFR 39.19 and paragraph (d)(1) of this AD, an operator
may request approval of an alternative method of compliance (AMOC) to
allow use of a particular task card for this AD. However, the AMOC
granted would require adherence to a particular revision of the task
card; use of any subsequent revisions would require a new AMOC request
and approval to enable the cognizant ACO to determine that the intent
of the AD requirement has not been altered. No change to the final rule
is necessary regarding this issue.
Clarification of Requirements
Certain portions of the preamble and paragraph (b) of this final
rule have been revised to clarify that the modification includes
applying grease to the grease fittings that are installed during the
modification.
The repetitive lubrication interval was clarified in paragraph (c)
of this final rule. Whereas the proposed AD specified that the
lubrication be done ``at intervals of 1,500 flight hours,'' this final
rule will require that the lubrication be done ``at intervals not to
exceed 1,500 flight hours.''
Paragraph (d)(2) has been revised in this final rule to clarify
that AMOCs approved previously in accordance with AD 93-21-04 are
approved as alternative methods of compliance with paragraph (a) of
this AD only.
Conclusion
After careful review of the available data, including the comments
noted above, the FAA has determined that air safety and the public
interest require the adoption of the rule with the changes previously
described. The FAA has determined that these changes will neither
increase the economic burden on any operator nor increase the scope of
the AD.
Changes to 14 CFR Part 39/Effect on the AD
On July 10, 2002, the FAA issued a new version of 14 CFR part 39
(67 FR 47997, July 22, 2002), which governs the FAA's airworthiness
directives system. The regulation now includes material that relates to
altered products, special flight permits, and alternative methods of
compliance. Because we have now included this material in part 39, we
no longer need to include it in each individual AD; however, the office
authorized to approve AMOCs is identified in paragraph (d)(1) of this
AD.
Cost Impact
The FAA estimates that 2 airplanes of U.S. registry are affected by
AD 93-21-04. The actions that are currently required by that AD take
approximately 1 work hour per airplane to accomplish, at an average
labor rate of $60 per work hour. Based on these figures, the cost
impact of the currently required actions is estimated to be $60 per
airplane.
Approximately 194 airplanes of U.S. registry will be affected by
this AD.
The modification required by this AD will take approximately 4 work
hours per airplane to accomplish, at an average labor rate of $60 per
work hour. Required parts will cost approximately $3,812 per airplane.
Based on these figures, the cost impact of the modification on U.S.
operators is estimated to be $786,088, or $4,052 per airplane.
The lubrication of the brake control valve required by this AD will
take approximately 1 work hour per airplane to accomplish, at an
average labor rate of $60 per work hour. Based on these figures, the
cost impact of this action on U.S. operators is estimated to be
$11,640, or $60 per airplane, per lubrication.
The cost impact figures discussed above are 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
0
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 removing amendment 39-8801 (59 FR 2952,
January 20, 1994), and by adding a new airworthiness directive (AD),
amendment 39-13179, to read as follows:
2003-11-20 Bombardier, Inc. (Formerly Canadair): Amendment 39-13179.
Docket 2000-NM-311-AD. Supersedes AD 93-21-04, Amendment 39-8801.
Applicability: Model CL-600-2B19 (Regional Jet Series 100 & 440)
airplanes, certificated in any category.
[[Page 33856]]
Compliance: Required as indicated, unless accomplished
previously.
To prevent temporary loss of braking action due to the freezing
of moisture on the input plunger of the brake control valve during
steep descent, accomplish the following:
Requirements of AD 93-21-04
Lubrications
(a) Within 3 days after February 4, 1994 (the effective date of
AD 93-21-04, amendment 39-8801), and thereafter at intervals not to
exceed 3 days, lubricate, with grease, the sliding shaft of the
input plunger of the brake control valve assembly, per Canadair
Regional Jet Alert Service Bulletin S.B.A601R-32-016, dated October
14, 1993, until modification of the brake control valve, as required
by paragraph (b) of this AD, is accomplished.
New Actions Required by This AD
Modification
(b) Within 12 months after the effective date of this AD: Modify
the brake control valve assembly by accomplishing all the actions
(including the application of grease to the grease fittings)
specified in Bombardier Service Bulletin 601R-32-017, dated November
9, 1993, per the service bulletin. Such modification terminates the
repetitive lubrications of the sliding shaft of the input plunger of
the brake control valve assembly required by paragraph (a) of this
AD.
Repetitive Lubrications
(c) Within 1,500 flight hours after doing the modification
required by paragraph (b) of this AD, and thereafter at intervals
not to exceed 1,500 flight hours, lubricate with grease the brake
control valve per paragraph 2.B.(18) of the Accomplishment
Instructions of Bombardier Service Bulletin 601R-32-017, dated
November 9, 1993.
Alternative Methods of Compliance
(d)(1) In accordance with 14 CFR 39.19, the Manager, New York
Aircraft Certification Office (ACO), FAA, is authorized to approve
alternative methods of compliance for this AD.
(2) Alternative methods of compliance, approved previously in
accordance with AD 93-21-04, amendment 39-8801, are approved as
alternative methods of compliance with paragraph (a) of this AD.
Incorporation by Reference
(e) The actions shall be done in accordance with Canadair
Regional Jet Alert Service Bulletin S.B.A601R-32-016, dated October
14, 1993; and Bombardier Service Bulletin 601R-32-017, dated
November 9, 1993; as applicable.
(1) The incorporation by reference of Bombardier Service
Bulletin 601R-32-017, dated November 9, 1993, is approved by the
Director of the Federal Register in accordance with 5 U.S.C. 552(a)
and 1 CFR part 51.
(2) The incorporation by reference of Canadair Regional Jet
Alert Service Bulletin S.B.A601R-32-016, dated October 14, 1993, was
approved previously by the Director of the Federal Register as of
February 4, 1994 (59 FR 2952, January 20, 1994).
(3) Copies of these service bulletins 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 (ACO), 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 1: The subject of this AD is addressed in Canadian
airworthiness directive CF-93-26R2, dated January 18, 1994.
Effective Date
(f) This amendment becomes effective on July 11, 2003.
Issued in Renton, Washington, on May 28, 2003.
Ali Bahrami,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 03-13975 Filed 6-5-03; 8:45 am]
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