[Federal Register Volume 78, Number 107 (Tuesday, June 4, 2013)]
[Rules and Regulations]
[Pages 33206-33208]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2013-12898]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2012-0930; Directorate Identifier 2011-NM-251-AD;
Amendment 39-17472; AD 2013-11-12]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc. Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
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SUMMARY: We are adopting a new airworthiness directive (AD) for certain
Bombardier, Inc. Model BD-100-1A10 (Challenger 300) airplanes. This AD
was prompted by reports of failure of a screw cap or end cap of the
hydraulic system accumulator while on the ground, which resulted in
loss of use of that hydraulic system and high-energy impact damage to
adjacent systems and structures. This AD would require inspecting for
the correct serial number of a certain hydraulic system accumulator,
and replacing affected hydraulic system accumulators with new or
serviceable accumulators. We are issuing this AD to prevent failure of
a screw cap or end cap and loss of the related hydraulic system, which
could result in damage to airplane structure and consequent reduced
controllability of the airplane.
DATES: This AD becomes effective July 9, 2013.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of July 9,
2013.
ADDRESSES: You may examine the AD docket on the Internet at http://www.regulations.gov or in person at the U.S. Department of
Transportation, Docket Operations, M-30, West Building Ground Floor,
Room W12-140, 1200 New Jersey Avenue SE., Washington, DC.
FOR FURTHER INFORMATION CONTACT: Cesar Gomez, Aerospace Engineer,
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury,
New York 11590; telephone (516) 228-7318; fax (516) 794-5531.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would apply to the specified products.
That NPRM was published in the Federal Register on September 6, 2012
(77 FR 54846). That NPRM proposed to correct an unsafe condition for
the specified products. The Mandatory Continuing Airworthiness
Information (MCAI) states:
Seven cases of on-ground hydraulic accumulator screw cap/end cap
failure have been experienced on CL-600-2B19 aeroplanes, resulting
in loss of the associated hydraulic system and high-energy impact
damage to adjacent systems and structure. To date, the lowest number
of flight cycles accumulated at the time of failure has been 6991.
Although there have been no failures to date on any BD-100-1A10
aeroplanes, accumulators similar to those installed on the CL-600-
2B19 are installed on them. The affected part numbers (P/Ns) of the
accumulators installed on BD-100-1A10 are 900095-1 (Auxiliary
Hydraulic System accumulator), 08-60219-001 (Inboard Brake
accumulator), and 08-60218-001 (Outboard Brake accumulator).
A detailed analysis of the calculated line of trajectory of a
failed screw cap/end cap for the accumulator has been conducted,
resulting in the identification of areas where systems and/or
structural components could potentially be damaged. Although all of
the failures to date have occurred on the ground, an in-flight
failure affecting such components could potentially have an adverse
effect on the controllability of the aeroplane.
This [TCCA] directive provides the initial action by mandating
the replacement of the Auxiliary Hydraulic System accumulators that
are not identified by the letter ``E'' after the serial number on
the identification plate. Further corrective actions are anticipated
to rectify similar safety concerns with the Inboard and Outboard
Brake accumulators.
You may obtain further information by examining the MCAI in the AD
docket.
Comments
We gave the public the opportunity to participate in developing
this AD. We considered the comments received.
Request To Change Precipitating Event Language
Bombardier asked that the language specifying that the NPRM (77 FR
54846, September 6, 2012) was prompted by ``auxiliary hydraulic
accumulator failure due to end cap or screw cap'' be changed.
Bombardier stated that there is no record of such auxiliary hydraulic
accumulator failure and added that the failures occurred on
accumulators having a similar design. Bombardier asked that the word
``auxiliary'' be removed from the NPRM.
We agree with the commenter for the reason provided. We have
removed the word ``auxiliary'' from the Summary section and paragraph
(e) of this AD.
Request for Clarification of Effective Date of AD
Bombardier asked if the compliance time in paragraphs (g)(1) and
(g)(3) of the NPRM (77 FR 54846, September 6, 2012) should refer to the
date of Bombardier Service Bulletin 100-29-14, dated December 16, 2010,
instead of the effective date of the AD. Bombardier stated that there
is a significant difference between the release date of that service
information and the effective date of the AD.
We acknowledge the commenter's concern and provide the following
clarification. We do not agree that the compliance time should
correspond to the release date of Bombardier Service Bulletin 100-29-
14, dated December 16, 2010. We do not intend to ground airplanes, but
that could occur if the release date of this service information is
used. Therefore, we must provide a
[[Page 33207]]
compliance time to account for the time that has passed since this
service information was issued.
Shortening the compliance time would mean issuing a supplemental
NPRM, and we do not consider it appropriate to further delay issuance
of this final rule. We determined that a compliance time following the
effective date of the AD is appropriate and represents an acceptable
interval in which the inspection can be performed in a timely manner
within the fleet, while still maintaining an adequate level of safety.
Additionally, operators are always permitted to accomplish the
requirements of an AD at a time earlier than the specified compliance
time. We have made no change to the AD in this regard.
Clarification of Address
Bombardier also asked if the email address for business airplanes
identified in paragraph (k)(2) of the NPRM (77 FR 54846, September 6,
2012) is accurate.
We contacted the manufacturer and verified that the email address
identified in paragraph (k)(2) of the NPRM (77 FR 54846, September 6,
2012) for obtaining service information from Bombardier, Inc., is the
correct email address for business airplanes. We have made no change to
the AD in this regard.
Conclusion
We reviewed the relevant data, considered the comments received,
and determined that air safety and the public interest require adopting
the AD with the change described previously. We also determined that
this change will not increase the economic burden on any operator or
increase the scope of the AD.
Costs of Compliance
We estimate that this AD affects 75 airplanes of U.S. registry. We
estimate the following costs to comply with this AD.
Estimated Costs
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Cost per Cost on U.S.
Action Labor cost Parts cost product operators
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Inspection to determine part numbers 1 work-hour x $85 per $0 $85 $6,375
hour = $85.
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We estimate the following costs to do any necessary replacements
that would be required based on the results of the inspection. We have
no way of determining the number of aircraft that might need these
replacements.
On-Condition Costs
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Cost per
Action Labor cost Parts cost product
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Hydraulic accumulator replacement............ 4 work-hours x $85 per hour = $0 $340
$340.
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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 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 this AD:
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);
3. Will not affect intrastate aviation in Alaska; and
4. 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.
Examining the AD Docket
You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Operations office
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains the NPRM (77 FR 54846, September 6,
2012), the regulatory evaluation, any comments received, and other
information. The street address for the Docket Operations office
(telephone (800) 647-5527) is in the ADDRESSES section. Comments will
be available in the AD docket shortly after receipt.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
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 FAA amends Sec. 39.13 by adding the following new AD:
2013-11-12 Bombardier, Inc.: Amendment 39-17472. Docket No. FAA-
2012-0930; Directorate Identifier 2011-NM-251-AD.
[[Page 33208]]
(a) Effective Date
This airworthiness directive (AD) becomes effective July 9,
2013.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Bombardier, Inc. Model BD-100-1A10
(Challenger 300) airplanes, certificated in any category, having
serial numbers 20003 through 20335 inclusive.
(d) Subject
Air Transport Association (ATA) of America Code 29, Hydraulic
Power.
(e) Reason
This AD was prompted by reports of failure of a screw-cap or end
cap of the hydraulic system accumulator while on the ground, which
resulted in loss of use of that hydraulic system and high-energy
impact damage to adjacent systems and structures. We are issuing
this AD to prevent failure of a screw cap or end cap and loss of the
related hydraulic system, which could result in damage to airplane
structure and consequent reduced controllability of the airplane.
(f) Compliance
You are responsible for having the actions required by this AD
performed within the compliance times specified, unless the actions
have already been done.
(g) Inspection
At the applicable time specified in paragraph (g)(1), (g)(2), or
(g)(3) of this AD: Inspect the identification plate on the hydraulic
system accumulator having part number (P/N) 900095-1 to determine if
an ``E'' is part of the suffix of the serial number stamped on the
identification plate, as listed in paragraph 2.B. of the
Accomplishment Instructions of Bombardier Service Bulletin 100-29-
14, dated December 16, 2010. A review of airplane maintenance
records is acceptable in lieu of this inspection if the suffix of
the serial number can be conclusively determined from that review.
(1) For an accumulator that has accumulated more than 3,150
total flight cycles as of the effective date of this AD, inspect
that accumulator within 350 flight cycles after the effective date
of this AD.
(2) For an accumulator that has accumulated 3,150 or fewer total
flight cycles as of the effective date of this AD, inspect that
accumulator before it has accumulated 3,500 total flight cycles.
(3) For an accumulator on which it is not possible to determine
the total flight cycles accumulated as of the effective date of this
AD, inspect that accumulator within 350 flight cycles after the
effective date of this AD.
(h) Replacement
If, during the inspection required by paragraph (g) of this AD,
any accumulator having P/N 900095-1 is found on which the letter
``E'' is not part of the suffix of the serial number on the
identification plate: Before further flight, replace the accumulator
with a new or serviceable accumulator, in accordance with paragraph
2.C. of the Accomplishment Instructions of Bombardier Service
Bulletin 100-29-14, dated December 16, 2010.
(i) Parts Installation Prohibition
As of the effective date of this AD, no person may install on
any airplane a hydraulic system accumulator having P/N 900095-1, on
which the letter ``E'' is not part of the suffix of the serial
number on the identification plate.
(j) Other FAA AD Provisions
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, New
York Aircraft Certification Office (ACO), ANE-170, FAA, has the
authority to approve AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19,
send your request to your principal inspector or local Flight
Standards District Office, as appropriate. If sending information
directly to the ACO, send it to the Program Manager, Continuing
Operational Safety, FAA, New York ACO, 1600 Stewart Avenue, Suite
410, Westbury, NY 11590; telephone (516) 228-7300; fax (516) 794-
5531. Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the local flight standards district office/certificate holding
district office. The AMOC approval letter must specifically
reference this AD.
(2) Airworthy Product: For any requirement in this AD to obtain
corrective actions from a manufacturer or other source, use these
actions if they are FAA-approved. Corrective actions are considered
FAA-approved if they are approved by the State of Design Authority
(or their delegated agent). You are required to assure the product
is airworthy before it is returned to service.
(k) Related Information
Refer to MCAI Canadian Airworthiness Directive CF-2011-41, dated
October 31, 2011; and Bombardier Service Bulletin 100-29-14, dated
December 16, 2010; for related information.
(l) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless the AD specifies otherwise.
(i) Bombardier Service Bulletin 100-29-14, dated December 16,
2010.
(ii) Reserved.
(3) For service information identified in this AD, contact
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval,
Qu[eacute]bec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-
7401; email [email protected]; Internet http://www.bombardier.com. You may review copies of the referenced service
information at the FAA, Transport Airplane Directorate, 1601 Lind
Avenue SW., Renton, WA.
(4) You may review copies of the service information at the FAA,
Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA.
For information on the availability of this material at the FAA,
call 425-227-1221.
(5) You may view this service information that is incorporated
by reference at the National Archives and Records Administration
(NARA). For information on the availability of this material at
NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued in Renton, Washington, on May 22, 2013.
Jeffrey E. Duven,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2013-12898 Filed 6-3-13; 8:45 am]
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