|
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2015-0088; Directorate Identifier 2014-NM-179-AD;
Amendment 39-18217; AD 2015-15-08]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc. Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
-----------------------------------------------------------------------
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 testing of the spoiler electronic control unit (SECU)
software for an upgrade, which revealed a timing error between the
command and monitor channels. This AD requires revising the maintenance
or inspection program to incorporate repetitive operational tests of
the aileron disconnect system, and corrective action if necessary. This
AD also requires modification and reidentification of the SECU, which
would terminate the repetitive operational tests. We are issuing this
AD to prevent a timing error in the SECU software, which, in
combination with failure of the roll disconnect switch, could result in
complete loss of spoiler functionality and consequent reduced
controllability of the airplane.
DATES: This AD becomes effective August 28, 2015.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of August 28,
2015.
ADDRESSES: You may examine the AD docket on the Internet at http://www.regulations.gov/#!docketDetail;D=FAA-2015-0088
or in person at
the Docket Management Facility, U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE., Washington, DC.
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
thd.crj@aero.bombardier.com; Internet http://www.bombardier.com. You
may view this referenced 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. It
is also available on the Internet at http://www.regulations.gov by
searching for and locating Docket No. FAA-2015-0088.
FOR FURTHER INFORMATION CONTACT: Assata Dessaline, Aerospace Engineer,
Avionics and Service Branch, ANE-172, FAA, New York Aircraft
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, NY
11590; telephone 516-228-7301; fax 516-794-5531.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would apply to certain Bombardier, Inc.
Model BD-100-1A10 (Challenger 300) airplanes. The NPRM published in the
Federal Register on February 18, 2015 (80 FR 8564).
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian Airworthiness Directive CF-
2014-24, dated August 5, 2014 (referred to after this as the Mandatory
Continuing Airworthiness Information, or ``the MCAI''), to correct an
unsafe condition on certain Bombardier, Inc. Model BD-100-1A10
(Challenger 300) airplanes. The MCAI states:
During testing of the software for an upgrade of the spoiler
electronic control unit (SECU), a timing error between the Command
and Monitor channels was found in the SECU software. This timing
error, if not corrected, in combination with the failure of the roll
disconnect switch, may lead to a complete loss of spoiler
functionality and result in a reduction or complete loss of
aeroplane roll control.
This [Canadian] AD mandates the SECU software modification to
correct the timing error and to change the inspection interval for a
maintenance task based on System Functional Hazard Analysis [by
revising the inspection or maintenance program].
You may examine the MCAI in the AD docket on the Internet at http://www.regulations.gov/#!documentDetail;D=FAA-2015-0088-0002.
Comments
We gave the public the opportunity to participate in developing
this AD. We received no comments on the NPRM (80 FR 8564, February 18,
2015) or on the determination of the cost to the public.
Conclusion
We reviewed the relevant data and determined that air safety and
the public interest require adopting this AD as proposed, with minor
editorial changes. We have determined that these minor changes:
Are consistent with the intent that was proposed in the
NPRM (80 FR 8564, February 18, 2015) for correcting the unsafe
condition; and
Do not add any additional burden upon the public than was
already proposed in the NPRM (80 FR 8564, February 18, 2015).
Related Service Information Under 1 CFR Part 51
Bombardier, Inc. has issued Service Bulletin 100-27-16, dated
October 31, 2013. The service information describes procedures for
modification and reidentification of the SECU. This service information
is reasonably available because the interested parties have access to
it through their normal course of business or by the means identified
in the ADDRESSES section of this AD.
Costs of Compliance
We estimate that this AD affects 107 airplanes of U.S. registry.
We also estimate that it takes up to 6 work-hours per product to
comply with the basic requirements of this AD. The average labor rate
is $85 per work-hour. Based on these figures, we estimate the cost of
this AD on U.S. operators to be up to $54,570, or up to $510 per
product.
We have received no definitive data on the parts cost for doing the
modification in this AD.
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.
Examining the AD Docket
You may examine the AD docket on the Internet at http://www.regulations.gov/#!docketDetail;D=FAA-2015-0088;
or in person
at the Docket Management Facility between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays. The AD docket contains this
AD, 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.
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
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. The FAA amends Sec. 39.13 by adding the following new
airworthiness directive (AD):
|