Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional Jet Series 100 and 440) Airplanes, 8547-8549 [E6-2319]

Download as PDF Federal Register / Vol. 71, No. 33 / Friday, February 17, 2006 / Proposed Rules investigated: 14 CFR 23.251; 23.613; 23.627; 23.629 (or CAR 3.159, as applicable to various models); 23.572; 23.573; 23.574 and 23.901. Vibration levels imposed on the airframe can be mitigated to an acceptable level by utilization of isolators, dampers, clutches, and similar provisions, so that unacceptable vibration levels are not imposed on the previously certificated structure. 14. Powerplant Installation—One Cylinder Inoperative cchase on PROD1PC60 with PROPOSALS 15. Powerplant Installation—High Energy Engine Fragments It may be possible for diesel engine cylinders (or portions thereof) to fail and physically separate from the engine at high velocity (due to the high internal pressures). This failure mode will be considered possible in engine designs with removable cylinders or other nonintegral block designs. The following is required: (1) It must be shown by the design of the engine that engine cylinders, other engine components or portions thereof (fragments) cannot be shed or blown off of the engine in the event of a catastrophic engine failure; or (2) It must be shown that all possible liberated engine parts or components do not have adequate energy to penetrate engine cowlings; or (3) Assuming infinite fragment energy, and analyzing the trajectory of the probable fragments and components, any hazard due to liberated engine parts or components will be minimized and the possibility of crew injury eliminated. Minimization must be considered during initial design and not presented as an analysis after design completion. 18:38 Feb 16, 2006 Jkt 208001 BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 It must be shown by test or analysis, or by a combination of methods, that the airframe can withstand the shaking or vibratory forces imposed by the engine if a cylinder becomes inoperative. Diesel engines of conventional design typically have extremely high levels of vibration when a cylinder becomes inoperative. No unsafe condition will exist in the case of an inoperative cylinder before the engine can be shut down. The resistance of the airframe structure, propeller, and engine mount to shaking moment and vibration damage must be investigated. It must be shown by test or analysis, or by a combination of methods, that shaking and vibration damage from the engine with an inoperative cylinder will not cause a catastrophic airframe, propeller, or engine mount failure. VerDate Aug<31>2005 Issued in Kansas City, Missouri on February 9, 2006. Patrick R. Mullen, Acting Manager, Small Airplane Directorate. Aircraft Certification Service. [FR Doc. E6–2285 Filed 2–16–06; 8:45 am] [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 Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Notice of proposed rulemaking (NPRM). AGENCY: 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. 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 https:// dms.dot.gov and follow the instructions for sending your comments electronically. • Government-wide rulemaking Web site: Go to https://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 DATES: PO 00000 Frm 00025 Fmt 4702 Sfmt 4702 8547 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 https:// 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 https:// dms.dot.gov. Examining the Docket You may examine the AD docket on the Internet at https://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. E:\FR\FM\17FEP1.SGM 17FEP1 8548 Federal Register / Vol. 71, No. 33 / Friday, February 17, 2006 / Proposed Rules 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. 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 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 Action Inspection Inspection Inspection Inspection Inspection of of of of of Part Part Part Part Part A relays B relays C relays D relays E relays Average labor rate per hour Work hours Cost per airplane Number of U.S.registered airplanes Fleet cost .................... .................... .................... .................... .................... 6 6 2 6 6 $65 65 65 65 65 $390 390 130 390 390 753 753 753 753 753 $293,670 293,670 97,890 293,670 293,670 Total for inspection of all relays ..... 26 65 $1,690 753 1,272,570 cchase on PROD1PC60 with PROPOSALS Authority for This Rulemaking Regulatory Findings 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. 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 VerDate Aug<31>2005 18:38 Feb 16, 2006 Jkt 208001 PO 00000 Frm 00026 Fmt 4702 Sfmt 4702 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. § 39.13 [Amended] 2. The Federal Aviation Administration (FAA) amends § 39.13 by adding the following new airworthiness directive (AD): E:\FR\FM\17FEP1.SGM 17FEP1 Federal Register / Vol. 71, No. 33 / Friday, February 17, 2006 / Proposed Rules 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. 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 § 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 DEPARTMENT OF THE INTERIOR Alternative To Relay Inspection for Certain Airplanes National Park Service (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. 36 CFR Chapter I cchase on PROD1PC60 with PROPOSALS 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. VerDate Aug<31>2005 18:38 Feb 16, 2006 Jkt 208001 Establishment of Negotiated Rulemaking Advisory Committee for Dog Management at Golden Gate National Recreation Area ACTION: Notice of establishment. SUMMARY: The Secretary of the Interior is establishing the Negotiated Rulemaking Advisory Committee for Dog Management to negotiate and develop a special regulation for dog management at Golden Gate National Recreation Area, in accordance with the Negotiated Rulemaking Act of 1990, 5 U.S.C. 564. FOR FURTHER INFORMATION CONTACT: Brian O’Neill, General Superintendent, Golden Gate National Recreation Area, PO 00000 Frm 00027 Fmt 4702 Sfmt 4702 8549 Ft. Mason, Building 201, San Francisco, California 94123, 415–561–4720. SUPPLEMENTARY INFORMATION: The Secretary has determined that establishment of this Committee is in the public interest and supports the National Park Service in performing its duties and responsibilities under the NPS Organic Act, 16 U.S.C. 1 et seq.; the Endangered Species Act, 16 U.S.C. 1531 et seq.; and the Golden Gate National Recreation Area Act, 16 U.S.C. 460bb et seq. In accordance with the Negotiated Rulemaking Act of 1990, 5 U.S.C. 564, a Notice of Intent to Establish a Negotiated Rulemaking Advisory Committee was published in the Federal Register on June 28, 2005, providing a 30-day public comment period which concluded July 28, 2005. Three hundred thirty seven responses were received during the comment period. Substantive Comments Committee Additions Comments suggested additions to the Committee which can be grouped into the following broad categories: Volunteer restoration groups, general park users not affiliated with any group, representation of adjacent governmental agencies, communities of color, disabled, additional dogwalkers associated with specific GGNRA sites and additional recreational user groups and advocates for narrowly-defined outcomes. Response The National Park Service is aware that a balanced Committee is necessary in order for discussions to be meaningful and fair. The Negotiated Rulemaking Procedure Act (U.S.C. Title 5, Part I, Chapter 5, Subchapter III) passed by Congress, states that a federal agency considering negotiated rulemaking must determine that there are a limited number of identifiable interests that will be significantly affected by the rule and that there is a reasonable likelihood that a committee can be convened with a balanced representation of persons who can adequately represent the interests identified. The Act also states that a federal agency can use the services of a ‘‘convener’’ to determine the above. NPS, working through the U.S. Institute of Environmental Conflict Resolution, hired the Center for Collaborative Policy (CCP) in March, 2004, and they subsequently assisted in identifying interests significantly affected by a proposed rule and representatives of those interests. E:\FR\FM\17FEP1.SGM 17FEP1

Agencies

[Federal Register Volume 71, Number 33 (Friday, February 17, 2006)]
[Proposed Rules]
[Pages 8547-8549]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E6-2319]


-----------------------------------------------------------------------

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).

-----------------------------------------------------------------------

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 https://dms.dot.gov and follow 
the instructions for sending your comments electronically.
     Government-wide rulemaking Web site: Go to https://
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 https://
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 https://dms.dot.gov.

Examining the Docket

    You may examine the AD docket on the Internet at https://
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
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                     Number of U.S.-
                          Action                               Work hours       Average labor    Cost per airplane      registered         Fleet cost
                                                                                rate per hour                           airplanes
--------------------------------------------------------------------------------------------------------------------------------------------------------
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
                                                          --------------------
    Total for inspection of all relays...................                 26                 65             $1,690                753          1,272,570
--------------------------------------------------------------------------------------------------------------------------------------------------------

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
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