[Federal Register: February 17, 2006 (Volume 71, Number 33)]
[Proposed Rules]
[Page 8547-8549]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr17fe06-23]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2006-23936; Directorate Identifier 2005-NM-215-AD]
RIN 2120-AA64
Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional
Jet Series 100 and 440) Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain Bombardier Model CL-600-2B19 (Regional Jet Series 100 &
440) airplanes. This proposed AD would require an inspection of the
manufacturer's date code on certain electrical relays to identify
defective Leach TDH-series electrical relays and replacement of
identified relays. This proposed AD results from a report of defective
electrical relays affecting emergency equipment. We are proposing this
AD to prevent the malfunction of emergency equipment (the passenger
oxygen system, the thrust reverse control system, and the auxiliary
power unit fire detection, warning, and extinguishing system) during an
emergency.
DATES: We must receive comments on this proposed AD by March 20, 2006.
ADDRESSES: Use one of the following addresses to submit comments on
this proposed AD.
DOT Docket Web site: Go to http://dms.dot.gov and follow
the instructions for sending your comments electronically.
Government-wide rulemaking Web site: Go to http://www.regulations.gov
and follow the instructions for sending your
comments electronically.
Mail: Docket Management Facility, U.S. Department of
Transportation, 400 Seventh Street, SW., Nassif Building, room PL-401,
Washington, DC 20590.
Fax: (202) 493-2251.
Hand Delivery: Room PL-401 on the plaza level of the
Nassif Building, 400 Seventh Street, SW., Washington, DC, between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
Contact Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087,
Station Centre-ville, Montreal, Quebec H3C 3G9, Canada, for service
information identified in this proposed AD.
FOR FURTHER INFORMATION CONTACT: Wing Chan, Aerospace Engineer, Systems
and Flight Test Branch, ANE-172, FAA, New York Aircraft Certification
Office, 1600 Stewart Avenue, suite 410, Westbury, NY 11590; telephone
(516) 228-7311; fax (516) 794-5531.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to submit any relevant written data, views, or
arguments regarding this proposed AD. Send your comments to an address
listed in the ADDRESSES section. Include the docket number ``FAA-2006-
23936; Directorate Identifier 2005-NM-215-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of the proposed AD. We will
consider all comments received by the closing date and may amend the
proposed AD in light of those comments.
We will post all comments we receive, without change, to http://dms.dot.gov
, including any personal information you provide. We will
also post a report summarizing each substantive verbal contact with FAA
personnel concerning this proposed AD. Using the search function of
that Web site, anyone can find and read the comments in any of our
dockets, including the name of the individual who sent the comment (or
signed the comment on behalf of an association, business, labor union,
etc.). You may review the DOT's complete Privacy Act Statement in the
Federal Register published on April 11, 2000 (65 FR 19477-78), or you
may visit http://dms.dot.gov.
Examining the Docket
You may examine the AD docket on the Internet at http://dms.dot.gov
, or in person at the Docket Management Facility office
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The Docket Management Facility office (telephone (800) 647-
5227) is located on the plaza level of the Nassif Building at the DOT
street address stated in the ADDRESSES section. Comments will be
available in the AD docket shortly after the Docket Management System
receives them.
[[Page 8548]]
Discussion
Transport Canada Civil Aviation (TCCA), which is the airworthiness
authority for Canada, notified us that an unsafe condition may exist on
certain Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440)
airplanes. TCCA advises that Leach International, a manufacturer of
electrical relays, has reported a manufacturing defect in a batch of
its TDH-series electrical relays installed on the subject airplanes.
The material in the time delay module of these relays can crack at
temperatures higher than 140 degrees Fahrenheit. If there is a crack in
the time delay module, the relay coil will break and the relay will not
operate. The systems affected by these relays include the passenger
oxygen system, the thrust reverse control system, and the auxiliary
power unit (APU) fire detection, warning, and extinguishing system. No
in-service problems caused by these relays have been reported to date.
However, this condition, if not corrected, could result in the
malfunction of emergency equipment (the passenger oxygen system, the
thrust reverse control system, and the APU fire detection, warning, and
extinguishing system) during an emergency.
Relevant Service Information
Bombardier has issued Service Bulletin 601R-24-118, Revision A,
dated August 8, 2005. The service bulletin describes procedures for
inspecting the manufacturer's date code on certain electrical relays to
identify defective Leach TDH-series relays and replacement of those
relays with serviceable relays, as identified in the service bulletin.
The subject relays are the K4WQ, K5WQ, K3QA, K4QA, K4WG, K1CN, and K2CN
relays. TCCA mandated the service information and issued Canadian
airworthiness directive CF-2005-35, dated September 1, 2005, to ensure
the continued airworthiness of these airplanes in Canada.
FAA's Determination and Requirements of the Proposed AD
This airplane model is manufactured in Canada and is type
certificated for operation in the United States under the provisions of
section 21.29 of the Federal Aviation Regulations (14 CFR 21.29) and
the applicable bilateral airworthiness agreement. Pursuant to this
bilateral airworthiness agreement, TCCA has kept the FAA informed of
the situation described above. We have examined TCCA's findings,
evaluated all pertinent information, and determined that we need to
issue an AD for airplanes of this type design that are certificated for
operation in the United States.
Therefore, we are proposing this AD, which would require
accomplishing the actions specified in the service information
described previously.
Costs of Compliance
The following table provides the estimated costs for U.S. operators
to comply with this proposed AD.
Estimated Costs
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Number of U.S.-
Action Work hours Average labor Cost per airplane registered Fleet cost
rate per hour airplanes
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Inspection of Part A relays.............................. 6 $65 $390 753 $293,670
Inspection of Part B relays.............................. 6 65 390 753 293,670
Inspection of Part C relays.............................. 2 65 130 753 97,890
Inspection of Part D relays.............................. 6 65 390 753 293,670
Inspection of Part E relays.............................. 6 65 390 753 293,670
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Total for inspection of all relays................... 26 65 $1,690 753 1,272,570
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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 have determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 the proposed
regulation:
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); 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.
We prepared a regulatory evaluation of the estimated costs to
comply with this proposed AD and placed it in the AD docket. See the
ADDRESSES section for a location to examine the regulatory evaluation.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 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 Federal Aviation Administration (FAA) amends Sec. 39.13 by
adding the following new airworthiness directive (AD):
[[Page 8549]]
Bombardier, Inc. (Formerly Canadair): Docket No. FAA-2006-23936;
Directorate Identifier 2005-NM-215-AD.
Comments Due Date
(a) The FAA must receive comments on this AD action by March 20,
2006.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Bombardier Model CL-600-2B19 (Regional
Jet Series 100 & 440) airplanes, certificated in any category,
serial numbers (S/N) 7003 and subsequent.
Unsafe Condition
(d) This AD results from a report of defective electrical relays
affecting emergency equipment. We are issuing this AD to prevent the
malfunction of emergency equipment (the passenger oxygen system, the
thrust reverse control system, and the auxiliary power unit (APU)
fire detection, warning, and extinguishing system) during an
emergency.
Compliance
(e) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.
Service Bulletin References
(f) The term ``service bulletin,'' as used in this AD, means the
Accomplishment Instructions of Parts A through E of Bombardier
Service Bulletin 601R-24-118, Revision A, dated August 8, 2005.
Relay Inspection
(g) Within 5,500 flight hours or 36 months after the effective
date of this AD, whichever is first: Do an inspection of the
manufacturer's date code on the K4WQ, K5WQ, K3QA, K4QA, K4WG, K1CN,
and K2CN electrical relays, in accordance with the service bulletin,
except as provided by paragraph (h) of this AD.
Alternative To Relay Inspection for Certain Airplanes
(h) For airplanes having S/Ns 7003 through 7363 inclusive, and
7889 and subsequent, which were not manufactured with the subject
Leach TDH-series relays installed: A review of the airplane
maintenance records is acceptable in lieu of the inspection of the
manufacturer's date code on the K4WQ, K5WQ, K3QA, K4QA, K4WG, K1CN,
and K2CN electrical relays, if the manufacturer's date code can be
conclusively determined from that review.
Replacement of Identified Relays
(i) Prior to further flight: Replace any electrical relay having
a manufacturer's date code specified in paragraph 1.A.,
``Effectivity,'' of the service bulletin that is identified during
the inspection or maintenance records review specified in paragraph
(g) or (h) of this AD with a serviceable relay, in accordance with
the service bulletin.
Inspections and Replacements According to Previous Issue of Service
Bulletin
(j) Inspecting and replacing the subject electrical relays is
also acceptable for compliance with the requirements of paragraphs
(g) and (i) of this AD, as applicable, if done before the effective
date of this AD in accordance with Accomplishment Instructions of
Parts A through E of Bombardier Service Bulletin 601R-24-118, dated
January 3, 2005.
Parts Installation
(k) As of the effective date of this AD, no person may install a
Leach TDH-series K4WQ, K5WQ, K3QA, K4QA, K4WG, K1CN, or K2CN relay
with a manufacturer's date code specified in paragraph 1.A.,
``Effectivity,'' of the service bulletin on any airplane.
Alternative Methods of Compliance (AMOCs)
(I)(1) The Manager, New York Aircraft Certification Office
(ACO), FAA, has the authority to approve AMOCs for this AD, if
requested in accordance with the procedures found in 14 CFR 39.19.
(2) Before using any AMOC approved in accordance with Sec.
39.19 on any airplane to which the AMOC applies, notify the
appropriate principal inspector in the FAA Flight Standards
Certificate Holding District Office.
Related Information
(m) Canadian airworthiness directive CF-2005-35, dated September
1, 2005, also addresses the subject of this AD.
Issued in Renton, Washington, on February 9, 2006.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E6-2319 Filed 2-16-06; 8:45 am]
BILLING CODE 4910-13-P