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[Federal Register Volume 80, Number 185 (Thursday, September 24, 2015)]
[Proposed Rules]
[Pages 57543-57545]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-24020]

========================================================================
Proposed Rules
                                                Federal Register
________________________________________________________________________

This section of the FEDERAL REGISTER contains notices to the public of 
the proposed issuance of rules and regulations. The purpose of these 
notices is to give interested persons an opportunity to participate in 
the rule making prior to the adoption of the final rules.

========================================================================


Federal Register / Vol. 80, No. 185 / Thursday, September 24, 2015 / 
Proposed Rules

[[Page 57543]]

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2015-3634; Directorate Identifier 2014-NM-203-AD]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc. Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to supersede Airworthiness Directive (AD) 2014-20-
01, for certain Bombardier, Inc. Model CL-600-2B16 (CL-601-3A, CL-601-
3R, and CL-604 Variants) airplanes. AD 2014-20-01 currently requires 
repetitive inspections for any fuel leak in the right-hand landing 
lights compartment, and related investigative and corrective actions if 
necessary. AD 2014-20-01 also provides for an optional replacement of 
the connector of the fuel boost pump canister of the auxiliary power 
unit (APU), which terminates the repetitive inspections. Since we 
issued AD 2014-20-01, we have determined that a terminating action for 
the repetitive inspections is necessary. This proposed AD would retain 
the repetitive inspections for any fuel leak in the right-hand landing 
lights compartment and the related investigative and corrective 
actions, and would require replacing the connector of the fuel boost 
pump canister of the APU. We are proposing this AD to detect and 
correct fuel leaks in the right-hand landing lights compartment, which, 
in combination with the heat generated by the taxi lights and landing 
lights on the ground reaching the auto-ignition temperature of the 
fuel, could result in ignition of any fuel or fumes present in the 
right-hand landing lights compartment.

DATES: We must receive comments on this proposed AD by November 9, 
2015.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
     Fax: 202-493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590.
     Hand Delivery: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC, between 9 a.m. and 5 p.m., Monday 
through Friday, except Federal holidays.
    For service information identified in this proposed 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. 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.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2015-
3634; 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 proposed 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. 
Comments will be available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Assata Dessaline, Aerospace Engineer, 
Avionics and Services Branch, ANE-172, FAA, New York Aircraft 
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, 
NY 11590; telephone 516-228-7301; fax 516-794-5531.

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2015-3634; 
Directorate Identifier 2014-NM-203-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD based on those comments.
    We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this proposed AD.

Discussion

    On September 19, 2014, we issued AD 2014-20-01, Amendment 39-17974 
(79 FR 59640, October 3, 2014). AD 2014-20-01 requires actions intended 
to address an unsafe condition on certain Bombardier, Inc. Model CL-
600-2B16 (CL-601-3A, CL-601-3R, and CL-604 Variants) airplanes. The 
preamble of AD 2014-20-01 specified that we considered the actions an 
interim action and that we were considering requiring ``a replacement 
of the connector of the fuel boost pump canister of the APU, and 
applicable corrective actions, which would constitute terminating 
action for the repetitive inspections required by this AD action.''
    Since we issued AD 2014-20-01, Amendment 39-17974 (79 FR 59640, 
October 3, 2014), we have determined that further rulemaking is indeed 
necessary; this proposed AD follows from that determination.
    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2014-21, dated July 10, 2014 (referred to after this as the Mandatory 
Continuing Airworthiness Information, or ``the MCAI''), to correct an 
unsafe condition for certain Bombardier, Inc. Model CL-600-2B16 (CL-
601-3A, CL-601-3R, and CL-604 Variants) airplanes. The MCAI states:

    Bombardier, Inc. has discovered fuel leakage in the auxiliary 
power unit (APU) fuel Boost Pump (BP) canister connector cavity. On 
some of those aeroplanes, leakage was also noticed at the APU fuel 
BP electrical conduit connection in the right hand landing light 
compartment. The root cause of the subject fuel leak is identified 
to be the

[[Page 57544]]

improper length of the female connector keyway located in the fuel 
BP canister, causing a shift of the electrical harness and its 
seals.
    Available data indicates that on a hot day, due to the heat 
generated by the taxi light and/or landing lights on the ground, 
temperature in the landing light compartment can reach the fuel auto 
ignition temperature. Therefore, presence of any fuel in the right 
hand landing light compartment is considered to be a safety hazard 
[fuel or fumes present in the right-side landing lights compartment 
might ignite] that warrants mitigating action.
    In order to help mitigate the potential safety hazard 
precipitated by any fuel leakage in the right hand landing light 
compartment, Bombardier, Inc., has revised the Aircraft Flight 
Manual (AFM) through Temporary Revisions (TRs) 604/38 and 605/20 
dated 16 June 2014 to restrict the operation of Taxi and Landing 
lights on the ground. Transport Canada issued Emergency [Canadian] 
AD CF-2014-17 [(http://ad.easa.europa.eu/ad/CF-2014-17) which 
corresponds to FAA AD 2014-15-17, Amendment 39-17919 (79 FR 44268, 
July 31, 2014] to mandate incorporation of the above AFM TRs.
    To address the root cause of the subject fuel leakage from the 
APU fuel boost pump canister wiring conduit, Bombardier, Inc. issued 
Alert Service Bulletin (ASB) A605-28-008 that requires periodic 
[repetitive general visual] inspection[s] for fuel leaks and 
[applicable related investigative and corrective actions and] 
eventual the replacement of the discrepant fuel BP canister 
connectors [including related investigative and corrective actions] 
on affected aeroplanes. The ASB has been revised to include an 
additional inspection of the new connector wiring for damage and 
this [Canadian] AD is issued to mandate the compliance with ASB 
A605-28-008 Revision 2 requirements.

We also included compliance times for the terminating action. You may 
examine the MCAI in the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2015-
3634.

FAA's Determination and Requirements of This Proposed AD

    This product has been approved by the aviation authority of another 
country, and is approved for operation in the United States. Pursuant 
to our bilateral agreement with the State of Design Authority, we have 
been notified of the unsafe condition described in the MCAI and service 
information referenced above. We are proposing this AD because we 
evaluated all pertinent information and determined an unsafe condition 
exists and is likely to exist or develop on other products of the same 
type design.

Costs of Compliance

    We estimate that this proposed AD affects 92 airplanes of U.S. 
registry.
    The actions required by AD 2014-20-01, Amendment 39-17974 (79 FR 
59640, October 3, 2014), and retained in this proposed AD take about 2 
work-hours per product, at an average labor rate of $85 per work-hour. 
Required parts cost $0 per product. Based on these figures, the 
estimated cost of the actions that are required by AD 2014-20-01 is 
$170 per product.
    We also estimate that it would take about 22 work-hours per product 
to comply with the basic requirements of this proposed AD. The average 
labor rate is $85 per work-hour. Required parts would cost $0 per 
product. Based on these figures, we estimate the cost of this proposed 
AD on U.S. operators to be $172,040, or $1,870 per product.
    According to the manufacturer, some of the costs of this proposed 
AD may be covered under warranty, thereby reducing the cost impact on 
affected individuals. We do not control warranty coverage for affected 
individuals. As a result, we have included all costs in our cost 
estimate.

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 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 this 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).
    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.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, 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

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 removing Airworthiness Directive (AD) 
2014-20-01, Amendment 39-17974 (79 FR 59640, October 3, 2014), and 
adding the following new AD:

Bombardier, Inc.: Docket No. FAA-2015-3634; Directorate Identifier 
2014-NM-203-AD.

(a) Comments Due Date

    We must receive comments by November 9, 2015.

(b) Affected ADs

    This AD replaces AD 2014-20-01, Amendment 39-17974 (79 FR 59640, 
October 3, 2014).

(c) Applicability

    This AD applies to Bombardier, Inc. Model CL-600-2B16 (CL-601-
3A, CL-601-3R, and CL-604 Variants) airplanes, certificated in any 
category, serial numbers 5906, 5910, 5912, 5917, 5919 through 5932 
inclusive, 5934, 5935, 5939, 5940, 5942, and 5948.

(d) Subject

    Air Transport Association (ATA) of America Code 28, Fuel.

(e) Reason

    This AD was prompted by a report of fuel leaks in the auxiliary 
power unit (APU) fuel boost pump canister connector cavity and in 
the right-hand landing lights compartment from the APU fuel boost 
pump electrical conduit connection and by a determination that 
terminating action for the repetitive inspections is necessary. We 
are issuing this AD to detect and correct fuel leaks in the right-
hand landing lights compartment,

[[Page 57545]]

which, in combination with the heat generated by the taxi lights and 
landing lights on the ground reaching the auto-ignition temperature 
of the fuel, could result in ignition of any fuel or fumes present 
in the right-hand landing lights compartment.

(f) Compliance

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

(g) Retained Repetitive Inspections for Fuel Leaks With No Changes

    This paragraph restates the requirements of paragraph (g) of AD 
2014-20-01, Amendment 39-17974 (79 FR 59640, October 3, 2014) with 
no changes. Within 25 flight hours after October 20, 2014, (the 
effective date of AD 2014-20-01): Do a general visual inspection for 
any fuel leak in the right-hand landing lights compartment, and do 
all applicable related investigative and corrective actions, in 
accordance with Part A of the Accomplishment Instructions of 
Bombardier Alert Service Bulletin A605-28-008, Revision 02, dated 
July 9, 2014, except as required by paragraph (h) of this AD. Do all 
applicable related investigative and corrective actions before 
further flight. Repeat the inspection thereafter at intervals not to 
exceed 8 flight hours until the replacement specified in paragraph 
(j) of this AD has been accomplished.

(h) Retained Corrective Action if Fuel Leak Is Found During Related 
Investigative Actions With No Changes

    This paragraph restates the requirements of paragraph (h) of AD 
2014-20-01, Amendment 39-17974 (79 FR 59640, October 3, 2014) with 
no changes. If any fuel leak is found during the related 
investigative actions required by paragraph (g) of this AD: Before 
further flight, do the terminating action specified in paragraph (j) 
of this AD, or do corrective actions using a method approved by the 
Manager, New York Aircraft Certification Office (ACO), ANE-170, 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.

(i) Retained Inspection of Connector Wiring With No Changes

    This paragraph restates the requirements of paragraph (j) of AD 
2014-20-01, Amendment 39-17974 (79 FR 59640, October 3, 2014) with 
no changes. For airplanes having new connectors installed, in 
accordance with Part B of the Accomplishment Instructions of 
Bombardier Alert Service Bulletin A605-28-008, dated April 21, 2014: 
Within 6 months or 150 flight hours after October 20, 2014, (the 
effective date of AD 2014-20-01), whichever occurs first, do a 
detailed inspection for damage (cuts) of the connector wiring, in 
accordance with Part B of the Accomplishment Instructions of 
Bombardier Alert Service Bulletin A605-28-008, Revision 02, dated 
July 9, 2014. If any damage (cuts) is found on the wires, before 
further flight, replace the wire with a new wire identified in kit 
605K28-008A, in accordance with the Accomplishment Instructions of 
Bombardier Alert Service Bulletin A605-28-008, Revision 02, dated 
July 9, 2014.

(j) New Requirement: Terminating Action--Replacement of Connector

    Within 5 months, or 150 flight hours after the effective date of 
this AD, replace the connector of the fuel boost pump canister of 
the APU and do all applicable related investigative actions, in 
accordance with Part B of the Accomplishment Instructions of 
Bombardier Alert Service Bulletin A605-28-008, Revision 02, dated 
July 9, 2014. Accomplishing this replacement terminates the 
repetitive actions required by paragraph (g) of this AD provided 
that the following actions are done, as applicable.
    (1) If any damage (cuts) is found on the wires, before further 
flight, replace the wire with a new wire identified in kit 605K28-
008A, in accordance with the Accomplishment Instructions of 
Bombardier Alert Service Bulletin A605-28-008, Revision 02, dated 
July 9, 2014.
    (2) If any damage is found on an O-ring, before further flight, 
replace the O-ring with a new O-ring, in accordance with the 
Accomplishment Instructions of Bombardier Alert Service Bulletin 
A605-28-008, Revision 02, dated July 9, 2014.
    (3) If any fuel leak is found, before further flight, do 
corrective actions using a method approved by the Manager, New York 
ACO, ANE-170, FAA; or TCCA; or Bombardier, Inc.'s TCCA DAO. If 
approved by the DAO, the approval must include the DAO-authorized 
signature.

(k) Retained Credit for Previous Actions With a Redesignated Paragraph

    This paragraph restates paragraph (k) of AD 2014-20-01, 
Amendment 39-17974 (79 FR 59640, October 3, 2014) with a 
redesignated paragraph. This paragraph provides credit for actions 
required by paragraph (j) of this AD, if those actions were 
performed before October 20, 2014, (the effective date of AD 2014-
20-01, Amendment 39-17974 (79 FR 59640, October 3, 2014) using 
Bombardier Alert Service Bulletin A605-28-008, Revision 01, dated 
May 28, 2014, which is not incorporated by reference in this AD.

(l) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York 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 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 516-794-5531. 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: As of the effective date of 
this AD, 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, FAA; or TCCA; or 
Bombardier, Inc.'s TCCA DAO. If approved by the DAO, the approval 
must include the DAO-authorized signature.

(m) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian Airworthiness Directive CF-2014-21, dated July 10, 
2014, for related information. This MCAI may be found in the AD 
docket on the Internet at http://www.regulations.gov by searching 
for and locating Docket No. FAA-2015-3634.
    (2) 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 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.

    Issued in Renton, Washington, on September 15, 2015.
Michael Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2015-24020 Filed 9-23-15; 8:45 am]
 BILLING CODE 4910-13-P
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