[Federal Register Volume 71, Number 92 (Friday, May 12, 2006)]
[Rules and Regulations]
[Pages 27593-27595]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 06-4311]


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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; 
Amendment 39-14590; AD 2006-10-06]
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: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain Bombardier Model CL-600-2B19 (Regional Jet Series 100 and 440) 
airplanes. This AD requires 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 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

[[Page 27594]]

reverse control system, and the auxiliary power unit fire detection, 
warning, and extinguishing system) during an emergency.

DATES: This AD becomes effective June 16, 2006.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in the AD as of June 16, 
2006.

ADDRESSES: You may examine the AD docket on the Internet at http://dms.dot.gov or in person at the Docket Management Facility, U.S. 
Department of Transportation, 400 Seventh Street, SW., Nassif Building, 
Room PL-401, Washington, DC.
    Contact Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087, 
Station Centre-ville, Montreal, Quebec H3C 3G9, Canada, for service 
information identified in this 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, New York 11590; 
telephone (516) 228-7311; fax (516) 794-5531.

SUPPLEMENTARY INFORMATION:

Examining the Docket

    You may examine the airworthiness directive (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 street address stated in the ADDRESSES section.

Discussion

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 to include an AD that would apply to certain Bombardier 
Model CL-600-2B19 (Regional Jet Series 100 and 440) airplanes. That 
NPRM was published in the Federal Register on February 17, 2006 (71 FR 
8547). That NPRM proposed to 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.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We received no comments on the NPRM or on the 
determination of the cost to the public.

Clarification of Compliance Time Specified in Paragraph (i) of the AD

    We have revised paragraph (i) of this AD to clarify that the 
replacement of identified electrical relays should be done prior to 
further flight following the inspection required by paragraph (g) of 
the AD.

Conclusion

    We have carefully reviewed the available data and determined that 
air safety and the public interest require adopting the AD with the 
change described previously. We have determined that this change will 
neither increase the economic burden on any operator nor increase the 
scope of the AD.

Costs of Compliance

    The following table provides the estimated costs for U.S. operators 
to comply with this AD.

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                         Number of
                                                         Work     Average    Cost per      U.S.-
                        Action                          hours   labor rate   airplane    registered   Fleet cost
                                                                 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
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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 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 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 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, Incorporation by 
reference, Safety.

Adoption of the Amendment

0
Accordingly, under the authority delegated to me by the Administrator, 
the FAA amends 14 CFR part 39 as follows:

[[Page 27595]]

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 Federal Aviation Administration (FAA) amends Sec.  39.13 by 
adding the following new airworthiness directive (AD):

2006-10-06 Bombardier, Inc. (Formerly Canadair): Amendment 39-14590. 
Docket No. FAA-2006-23936; Directorate Identifier 2005-NM-215-AD.

Effective Date

    (a) This AD becomes effective June 16, 2006.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Bombardier Model CL-600-2B19 (Regional 
Jet Series 100 and 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 after the inspection in paragraph 
(g) of this AD: 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 Bombardier Service Bulletin 601R-24-118, 
Revision A, dated August 8, 2005, on any airplane.

Alternative Methods of Compliance (AMOCs)

    (l)(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.

Material Incorporated by Reference

    (n) You must use Bombardier Service Bulletin 601R-24-118, 
Revision A, dated August 8, 2005, to perform the actions that are 
required by this AD, unless the AD specifies otherwise. The Director 
of the Federal Register approved the incorporation by reference of 
this document in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. 
Contact Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087, 
Station Centre-ville, Montreal, Quebec H3C 3G9, Canada, for a copy 
of this service information. You may review copies at the Docket 
Management Facility, U.S. Department of Transportation, 400 Seventh 
Street SW., Room PL-401, Nassif Building, Washington, DC; on the 
Internet at http://dms.dot.gov; or at the National Archives and 
Records Administration (NARA). For information on the availability 
of this material at the NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

    Issued in Renton, Washington, on April 25, 2006.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 06-4311 Filed 5-11-06; 8:45 am]
BILLING CODE 4910-13-P