[Federal Register Volume 63, Number 152 (Friday, August 7, 1998)]
[Rules and Regulations]
[Pages 42217-42219]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 98-21098]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 97-NM-116-AD; Amendment 39-10702; AD 98-16-25]
RIN 2120-AA64
Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional
Jet Series 100 and 200) 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 and 200) airplanes, that currently requires repetitive
inspections to detect discrepancies of the shock strut end caps and
attachment pins of the main landing gear (MLG), and replacement of
discrepant parts with new parts. It also requires a check for and
replacement of certain pins that currently may be installed on some
airplanes. This amendment adds a requirement for the installation of
new, improved MLG shock strut upper and lower attachment pins, which
constitutes terminating action for the repetitive inspections. This
amendment also reduces the applicability of the existing AD by removing
certain airplanes. This amendment is prompted by issuance of mandatory
continuing airworthiness information by a foreign civil airworthiness
authority. The actions specified by this AD are intended to prevent
failure of attachment pins and the attachment pin end caps, which could
result in failure of the MLG.
DATES: Effective September 11, 1998.
The incorporation by reference of certain publications listed in
the regulations is approved by the Director of the Federal Register as
of September 11, 1998.
The incorporation by reference of Messier-Dowty Service Bulletin
No. M-DT 17002-32-10, Revision 3, dated September 6, 1996, and Canadair
Regional Jet Alert Service Bulletin S.B. A601R-32-062, Revision `C,'
dated September 18, 1996, was previously approved by the Director of
the Federal Register as of November 21, 1996 (61 FR 57319, November 6,
1996).
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; and
Messier-Dowty Inc., 574 Monarch Avenue, Ajax, Ontario L1S 2GB, 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, Engine and Propeller Directorate, 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: George Duckett, Aerospace
Engineer,Airframe and Propulsion Branch, ANE-171, FAA, New York
Aircraft CertificationOffice, Engine and Propeller Directorate, 10
Fifth Street, Third Floor, Valley Stream,New York 11581; telephone
(516) 256-7525; fax (516) 256-2716.
SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal
Aviation Regulations (14 CFR part 39) by superseding AD 96-22-14,
amendment 39-9803 (61 FR 57319, November 6, 1996), which is applicable
to certain BombardierModel CL-600-2B19 (Regional Jet Series 100 and
200) airplanes, was published in theFederal Register on June 9, 1998
(63 FR 31377). The action proposed to continue to require repetitive
inspections to detect discrepancies of the shock strut end caps and
attachment pins of the main landing gear (MLG), and replacement of
discrepant parts with new parts. It also proposed to continue to
require a check for and replacement of certain pins that currently may
be installed on some airplanes. The action proposed to add a
requirement for the installation of new, improved MLG shock strut upper
and lower attachment pins, which would constitute terminating action
for the repetitive inspections. That action also proposed to reduce the
applicability of the existing AD by removing certain airplanes.
[[Page 42218]]
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 theFAA's determination of the cost to the public.
Conclusion
The FAA has determined that air safety and the public interest
require the adoption of the rule as proposed.
Cost Impact
There are approximately 41 Model CL-600-2B19 (Regional Jet Series
100 and 200) airplanes of U.S. registry that will be affected by this
AD.
The actions that are currently required by AD 96-22-14, and
retained in this AD, take approximately 25 work hours 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 on
U.S. operators is estimated to be $61,500, or $1,500 per airplane.
The new actions that are required by this new AD will take
approximately 13 work hours per airplane to accomplish, at an average
labor rate of $60 per work hour. Required parts will be supplied by the
manufacturer at no cost to the operators. Based on these figures, the
cost impact of the new requirements of this AD on U.S. operators is
estimated to be $31,980, or $780 per airplane.
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.
Regulatory Impact
The regulations adopted herein will not have substantial direct
effects 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, in
accordance with Executive Order 12612, it is determined that this final
rule does not have sufficient federalism implications to warrant the
preparation of a Federalism Assessment.
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, theFederal Aviation Administration amends part 39 of the
Federal Aviation Regulations (14CFR 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 removing amendment 39-9803 (61 FR
57319, November 6, 1996), and by adding a new airworthiness directive
(AD), amendment 39-10702, to read as follows:
98-16-25 Bombardier, Inc. (Formerly Canadair): Amendment 39-10702.
Docket 97-NM-116-AD. Supersedes AD 96-22-14, Amendment 39-9803.
Applicability: Model CL-600-2B19 (Regional Jet Series 100 and
200) airplanes, serial numbers 7003 through 7157 inclusive;
certificated in any category.
Note 1: This AD applies to each airplane identified in the
preceding applicability provision, regardless of whether it has been
modified, altered, or repaired in the area subject to the
requirements of this AD. For airplanes that have been modified,
altered, or repaired so that the performance of the requirements of
this AD is affected, the owner/operator must request approval for an
alternative method of compliance in accordance with paragraph (f)(1)
of this AD. The request should include an assessment of the effect
of the modification, alteration, or repair on the unsafe condition
addressed by this AD; and, if the unsafe condition has not been
eliminated, the request should include specific proposed actions to
address it.
Compliance: Required as indicated, unless accomplished
previously.
To prevent failure of attachment pins and the attachment pin end
caps of the main landing gear (MLG), which could result in failure
of the MLG, accomplish the following:
Restatement of the Requirements of AD 96-22-14
(a) Serial Number Check. For airplanes having serial numbers
7003 through 7126 inclusive: Within 150 landings after November 21,
1996 (the effective date of AD 96-22-14, amendment 39-9803), check
the serial number of each MLG shock strut lower attachment pin, part
number 17144-1, in accordance with paragraphs 2.A. and 2.B. of the
Accomplishment Instructions of Canadair Regional Jet Alert Service
Bulletin S.B. A601R-32-062, Revision `C,' dated September 18, 1996;
and paragraphs 2.A.(4), 2.B.(4), and 2.C.(3) of the Accomplishment
Instructions of Messier-Dowty Service Bulletin M-DT 17002-32-10,
Revision 3, dated September 6, 1996.
(1) If the serial number is within the range of DCL206 through
DCL259 inclusive, prior to further flight, remove the pin and
install a new pin having a serial number outside (either higher or
lower) of that range, in accordance with the service bulletins.
Thereafter, inspect that replacement pin in accordance with
paragraphs (b) and (c) of this AD.
(2) If the serial number is outside of the range (higher or
lower) of DCL206 through DCL259 inclusive, thereafter inspect the
pin in accordance with paragraphs (b) and (c) of this AD.
(b) In-Situ Visual Inspection. Within 150 landings after
November 21, 1996, perform an in-situ visual inspection to detect
discrepancies of the left- and right-hand shock strut of the MLG, in
accordance with paragraphs 2.C. and 2.D. of the Accomplishment
Instructions of Canadair Regional Jet Alert Service Bulletin S.B.
A601R-32-062, Revision `C,' dated September 18, 1996; and paragraph
2.B.(1) of the Accomplishment Instructions of Messier-Dowty Service
Bulletin M-DT 17002-32-10, Revision 3, dated September 6, 1996.
Note 2: In-situ visual inspections that have been accomplished
prior to November 21, 1996, in accordance with Messier-Dowty Service
Bulletin M-DT 17002-32-10, dated June 13, 1996; Revision 1, dated
June 29, 1996; or Revision 2, dated July 17, 1996; are considered
acceptable for compliance with paragraph (b) of this amendment.
(1) If no discrepancy is detected, repeat the in-situ visual
inspection thereafter at intervals not to exceed every ``A'' check
or 400 landings, whichever occurs later.
(2) If any discrepancy is detected, prior to further flight,
replace the discrepant part with a new part in accordance with the
service bulletins. Thereafter, repeat the in-situ visual inspection
at intervals not to exceed every ``A'' check or 400 landings,
whichever occurs later.
(c) Detailed Inspection. Within 3,000 landings since the date of
airplane manufacture, or within 400 landings after November 21,
1996, whichever occurs later, perform a detailed inspection to
detect discrepancies of the shock strut end caps and attachment pins
of the MLG, in accordance with paragraphs 2.E. and 2.F. of the
Accomplishment Instructions of Canadair Regional Jet Alert Service
Bulletin S.B. A601R-32-062, Revision `C,' dated September 18, 1996;
and paragraph 2.B.(2) of the Accomplishment Instructions of Messier-
Dowty Service Bulletin M-DT 17002-32-10, Revision 3, dated September
6, 1996. Non-destructive testing (NDT) must be accomplished in
accordance with the instructions provided or references referred
[[Page 42219]]
to in these service bulletins. Where instructions in those documents
specify dye penetrant inspections (DPI), accomplish fluorescent
penetrant (Type 1) inspections, sensitivity level 3 or higher, using
material qualified to Military Standard MIL-I-25135.
Note 3: Detailed inspections accomplished prior to November 21,
1996, in accordance with Messier-Dowty Service Bulletin M-DT 17002-
32-10, dated June 13, 1996; Revision 1, dated June 29, 1996; or
Revision 2, dated July 17, 1996; are considered acceptable for
compliance with paragraph (c) of this amendment.
(1) If no discrepancy is detected, repeat the detailed
inspection thereafter at intervals not to exceed 2,000 landings.
(2) If any discrepancy is detected, prior to further flight,
replace the discrepant part with a new part in accordance with the
service bulletins. Repeat the detailed inspection thereafter at
intervals not to exceed 2,000 landings.
(d) As of November 21, 1996, no person shall install on any
airplane an MLG shock strut lower attachment pin, part number 17144-
1, that has a serial number that is within the range of DCL206
through DCL259 inclusive.
New Requirements of this AD
(e) Within 6 months after the effective date of this AD, install
new MLG shock strut upper and lower attachment pins in accordance
with Canadair Regional Jet ServiceBulletin S.B. 601R-32-065, dated
November 11, 1996. Accomplishment of this installation constitutes
terminating action for the repetitive inspections required by
paragraphs (b) and (c) of this AD.
Note 4: The Canadair service bulletin references Messier-Dowty
Service Bulletin M-DT 17002-32-12, dated November 6, 1996, as an
additional source of service information to accomplish the
installation.
(f)(1) 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, Engine and Propeller Directorate. 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.
(2) Alternative methods of compliance, approved previously in
accordance with AD 96-22-14, amendment 39-9803, are approved as
alternative methods of compliance with this AD.
Note 5: Information concerning the existence of approved
alternative methods of compliance with this AD, if any, may be
obtained from the New York ACO.
(g) Special flight permits may be issued in accordance with
sections 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.
(h) The actions shall be done in accordance with Canadair
Regional Jet Service Bulletin S.B. 601R-32-065, dated November 11,
1996; Messier-Dowty Service Bulletin No. M-DT 17002-32-10, Revision
3, dated September 6, 1996; and Canadair Regional Jet Alert Service
Bulletin S.B. A601R-32-062, Revision `C,' dated September 18, 1996.
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.
(1) The incorporation by reference of Canadair Regional Jet
Service Bulletin S.B. 601R-32-065, dated November 11, 1996, 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 Messier-Dowty Service
Bulletin No. M-DT 17002-32-10, Revision 3, dated September 6, 1996,
and Canadair Regional Jet Alert Service Bulletin S.B. A601R-32-062,
Revision `C,' dated September 18, 1996, was previously approved by
the Director of the Federal Register as of November 21, 1996 (61 FR
57319, November 6, 1996).
(3) 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,
Engine and Propeller Directorate, 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 6: The subject of this AD is addressed in Canadian
airworthiness directive CF-96-12R1, dated January 29, 1997.
(i) This amendment becomes effective on September 11, 1998.
Issued in Renton, Washington, on July 31, 1998.
Darrell M. Pederson,
Acting Manager, Transport Airplane Directorate,Aircraft Certification
Service.
[FR Doc. 98-21098 Filed 8-6-98; 8:45 am]
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