
[Federal Register Volume 80, Number 247 (Thursday, December 24, 2015)]
[Rules and Regulations]
[Pages 80236-80239]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-31604]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2014-0625; Directorate Identifier 2014-NM-044-AD; 
Amendment 39-18343; AD 2015-25-05]
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

[[Page 80237]]

Bombardier, Inc. Model CL-600-2A12 (CL-601) and CL-600-2B16 (CL-601-3A, 
CL-601-3R, and CL-604 Variants) airplanes. This AD was prompted by a 
report of an aft equipment bay fire due to chafing and subsequent 
arcing of the integrated drive generator (IDG) power cables. 
Additionally, we have received several reports of broken support 
brackets of the hydraulic line. This AD requires a one-time inspection 
of the IDG power cables for chafing, and for any cracked or broken 
support bracket of the hydraulic line; and corrective actions if 
necessary. We are issuing this AD to detect and correct broken support 
brackets of the hydraulic lines, which could result in inadequate 
clearance between the IDG power cables and hydraulic lines and chafing 
of the IDG power cables, and consequent high energy arcing and an 
uncontrolled fire in the aft equipment bay.

DATES: This AD becomes effective January 28, 2016.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of January 28, 
2016.

ADDRESSES: You may examine the AD docket on the Internet at http://www.regulations.gov/#!docketDetail;D=FAA-2014-0625 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 514-85-5000; 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-2014-0625.

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 CL-600-2A12 (CL-601) and CL-600-2B16 (CL-601-3A, CL-601-3R, and 
CL-604 Variants) airplanes. The NPRM published in the Federal Register 
on September 17, 2014 (79 FR 55673).
    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2014-05, dated January 20, 2014 (referred to after this as the 
Mandatory Continuing Airworthiness Information, or ``the MCAI''), to 
correct an unsafe condition for the specified products. The MCAI 
states:

    There has been one reported case on the CL-600-2B19 aeroplane of 
an aft equipment bay fire occurring due to arcing of chafed 
integrated drive generator (IDG) power cables. Additionally, the 
hydraulic line support brackets located at the fuselage station (FS) 
672 and FS 682 on a CL-600-2B19 aeroplane could result in inadequate 
clearance between the IDG power cables and hydraulic lines, 
potentially resulting in chafing of the IDG power cables. Chafed IDG 
power cables can generate high energy arcing, which can result in an 
uncontrolled fire in the aft equipment bay.
    It was found that a similar configuration exists on models CL-
600-2A12 and CL-600-2B16 aeroplanes. Therefore, a similar unsafe 
condition exists.
    This [Canadian] AD mandates the detailed visual inspection and, 
if required, rectification of the IDG power cables and hydraulic 
line support bracket.

    Required corrective actions include repair or replacement of the 
IDG power cable if any chafing is found, and replacement of any cracked 
or broken support bracket. You may examine the MCAI in the AD docket on 
the Internet at http://www.regulations.gov/#!documentDetail;D=FAA-2014-
0625-0003.

Comments

    We gave the public the opportunity to participate in developing 
this AD. The following presents the comments received on the NPRM (79 
FR 55673, September 17, 2014) and the FAA's response to each comment.

Request To Correct Typographical Error

    Bombardier asked that one of the service bulletin references 
identified in the ``Relevant Service Information'' section of the NPRM 
(79 FR 55673, September 17, 2014) be changed to correct a typographical 
error. Bombardier Service Bulletin ``604-0625,'' as identified in the 
``Relevant Service Information'' section, should be identified as 
Bombardier Service Bulletin ``601-0625.''
    We agree with the commenter for the reason provided, and we have 
changed this reference to correctly specify Bombardier Service Bulletin 
601-0625 throughout this final rule.

Request To Clarify Credit Provisions

    Bombardier asked that we clarify the language in paragraph (h) of 
the proposed AD, ``Credit for Previous Actions.'' Bombardier stated 
that the current language may cause some confusion because the content 
is not clear.
    We acknowledge the commenter's concern, and we provide the 
following clarification for the credit language used in paragraph (h) 
of this AD. Paragraph (h) of this AD matches the intent of the last two 
paragraphs in the ``Corrective Actions'' section of Canadian AD CF-
2014-05, dated January 20, 2014. Both this FAA AD and the Canadian AD 
give credit for accomplishing Bombardier Service Bulletins 605-24-007, 
604-24-026, and 601-0625, all dated September 18, 2012, but only if 
Service Request for Product Support Action (SRPSA) 27512, SRPSA 30806, 
SRPSA 32727, SRPSA 32864, or SRPSA 33161 has not been done.

Clarification of Airplane Models

    We have included the airplane models identified in the service 
information in the ``Related Service Information under 1 CFR part 51'' 
section, and paragraphs (g)(1), (g)(2), and (g)(3) of this AD (79 FR 
55673, September 17, 2014), for clarification.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
this AD with the changes described previously and minor editorial 
changes. We have determined that these minor changes:
     Are consistent with the intent that was proposed in the 
NPRM (79 FR 55673, September 17, 2014) for correcting the unsafe 
condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM (79 FR 55673, September 17, 2014).
    We also determined that these changes will not increase the 
economic burden on any operator or increase the scope of this AD.

Related Service Information Under 1 CFR Part 51

    Bombardier has issued the following service information:
     Bombardier Service Bulletin 605-24-007, Revision 01, dated 
January 13,

[[Page 80238]]

2014 (for Model CL-600-2B16 airplanes (CL-604 Variant));
     Bombardier Service Bulletin 604-24-026, Revision 01, dated 
January 13, 2014 (for Model CL-600-2B16 airplanes (CL-604 Variant)); 
and
     Bombardier Service Bulletin 601-0625, Revision 01, dated 
January 13, 2014 (for Model CL-600-2A12 (CL-601) and CL-600-2B16 
airplanes (CL-601-3A and CL-601-3R Variants)).
    This service information describes procedures for a one-time 
inspection of the IDG power cables for chafing, and for any cracked or 
broken support bracket of the hydraulic line; and corrective actions if 
necessary. 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.

Costs of Compliance

    We estimate that this AD affects 95 airplanes of U.S. registry.
    We also estimate that it takes about 1 work-hour 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 $8,075, or $85 per product.
    We have received no definitive data that would enable us to provide 
cost estimates for the on-condition repair of chafed power cables or 
cracked or broken support brackets, as specified 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-2014-0625; 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

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 airworthiness 
directive (AD):

2015-25-05 Bombardier, Inc.: Amendment 39-18343; Docket No. FAA-
2014-0625; Directorate Identifier 2014-NM-044-AD.

(a) Effective Date

    This AD becomes effective January 28, 2016.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc. airplanes identified in 
paragraphs (c)(1), (c)(2), and (c)(3) of this AD, certificated in 
any category.
    (1) Model CL-600-2A12 (CL-601) airplanes, serial numbers 3001 
through 3066 inclusive.
    (2) Model CL-600-2B16 (CL-601-3A, CL-601-3R Variants) airplanes, 
serial numbers 5001 through 5194 inclusive.
    (3) Model CL-600-2B16 (CL-604 Variant) airplanes, serial numbers 
5301 through 5665 inclusive, and 5701 through 5934 inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 24, Electrical 
Power.

(e) Reason

    This AD was prompted by a report of an aft equipment bay fire 
due to chafing and subsequent arcing of the integrated drive 
generator (IDG) power cables. Additionally, we have received several 
reports of broken support brackets of the hydraulic lines. We are 
issuing this AD to detect and correct broken support brackets of the 
hydraulic lines, which could result in inadequate clearance between 
the IDG power cables and hydraulic lines and chafing of the IDG 
power cables, and consequent high energy arcing and an uncontrolled 
fire in the aft equipment bay.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) One-Time Inspection and Corrective Actions

    Within 400 flight hours or 18 months after the effective date of 
this AD, whichever occurs first: Perform a one-time detailed 
inspection of the IDG power cables for chafing between the cables 
and the adjacent hydraulic and pneumatic lines, and for any cracked 
or broken support bracket of the hydraulic lines, in accordance with 
the Accomplishment Instructions of the applicable service 
information identified in paragraphs (g)(1), (g)(2), and (g)(3) of 
this AD. If any chafing of the power cables or any cracked or broken 
support bracket is found, before further flight, repair or replace, 
as applicable, in accordance with the Accomplishment Instructions of 
the applicable service information identified in paragraphs (g)(1), 
(g)(2), and (g)(3) of this AD.
    (1) Bombardier Service Bulletin 605-24-007, Revision 01, dated 
January 13, 2014 (for Model CL-600-2B16 airplanes (CL-604 Variant)).
    (2) Bombardier Service Bulletin 604-24-026, Revision 01, dated 
January 13, 2014 (for Model CL-600-2B16 airplanes (CL-604 Variant)).
    (3) Bombardier Service Bulletin 601-0625, Revision 01, dated 
January 13, 2014 (for Model Cl-600-2A12 (CL-601) and CL-600-2B16 
airplanes (CL-601-3A and CL-601-3R Variants)).

(h) Credit for Previous Actions

    This paragraph provides credit for action required by paragraph 
(g) of this AD, if the

[[Page 80239]]

conditions specified in both paragraphs (h)(1) and (h)(2) of this AD 
are met.
    (1) The action was performed before the effective date of this 
AD using Bombardier Service Bulletin 605-24-007, Bombardier Service 
Bulletin 604-24-026, or Bombardier Service Bulletin 601-0625, all 
dated September 18, 2012. This service information is not 
incorporated by reference in this AD.
    (2) The action specified in Service Request for Product Support 
Action (SRPSA) 27512, SRPSA 30806, SRPSA 32727, SRPSA 32864, or 
SRPSA 33161 has not been done.

(i) 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 New York ACO, send it to ATTN: Program Manager, 
Continuing Operational Safety, FAA, New York ACO, 1600 Stewart 
Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7300; fax 
516-794-553. 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) Contacting the Manufacturer: For any requirement in this AD 
to obtain corrective actions from a manufacturer, the action must be 
accomplished using a method approved by the Manager, New York ACO, 
ANE-170, Engine and Propeller Directorate, FAA; or Transport Canada 
Civil Aviation (TCCA); or Bombardier, Inc.'s TCCA Design Approval 
Organization (DAO). If approved by the DAO, the approval must 
include the DAO-authorized signature.

(j) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian Airworthiness Directive CF-2014-05, dated January 
20, 2014, for related information. This MCAI may be found in the AD 
docket on the Internet at http://www.regulations.gov/#!documentDetail;D=FAA-2014-0625-0003.
    (2) Service information identified in this AD that is not 
incorporated by reference is available at the addresses specified in 
paragraphs (k)(3) and (k)(4) of this AD.

(k) 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 this AD specifies otherwise.
    (i) Bombardier Service Bulletin 605-24-007, Revision 01, dated 
January 13, 2014.
    (ii) Bombardier Service Bulletin 604-24-026, Revision 01, dated 
January 13, 2014.
    (iii) Bombardier Service Bulletin 601-0625, Revision 01, dated 
January 13, 2014.
    (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 thd.crj@aero.bombardier.com; Internet http://www.bombardier.com.
    (4) You may view this 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 December 8, 2015.
Michael Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2015-31604 Filed 12-23-15; 8:45 am]
BILLING CODE 4910-13-P


