DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2014-0650; Directorate Identifier 2014-NM-162-AD;
Amendment 39-17974; AD 2014-20-01]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc. Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).

ACTION: Final rule; request for comments.

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SUMMARY: We are adopting a new airworthiness directive (AD) for certain
Bombardier, Inc. Model CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604
Variants) airplanes. This AD requires repetitive inspections for any
fuel leak in the right-hand landing lights compartment, and related
investigative and corrective actions if necessary. This AD 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. This AD was prompted by a report of fuel leaks
in the connector cavity of the APU fuel boost pump canister and at the
electrical conduit connection of the APU fuel boost pump in the right-
hand landing lights compartment. We are issuing 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: This AD becomes effective October 20, 2014.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of October 20,
2014.
We must receive comments on this AD by November 17, 2014.

ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, 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 AD, contact Bombardier,
Inc., 400 Cote-Vertu Road West, Dorval, Quebec 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-2014-
0650; or in person at the Docket Operations office 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. 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:

Discussion

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 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-hand 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://wwwapps3.tc.gc.ca/Saf-Sec-Sur/2/cawis-swimn/attachment.
asp?aiid=CF-2014-17&revid=0&cntr=CF&file=CFCF-2014-17.pdf&type=PDE),
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.

Related investigative actions include doing a general visual inspection
for any fuel leak in the wiring conduit of the APU fuel boost pump in
the right-hand landing lights compartment; a detailed inspection for
damage of the O-rings of the fuel pump cartridge; and a detailed
inspection of the wires under the wiring insulation sleeve of the new
connector for cuts. Corrective actions include installing new packings
on the APU fuel pump cartridge, replacing the connector on the APU fuel
pump canister, and replacing wiring and O-rings if certain conditions
are found. You may examine the MCAI on the Internet at http://www.
regulations.gov by searching for and locating Docket No. FAA-2014-
0650.

Relevant Service Information

Bombardier, Inc. has issued Bombardier Alert Service Bulletin A605-
28-008, Revision 02, dated July 9, 2014. The actions described in this
service information are intended to correct the unsafe condition identified in
the MCAI.

Other Relevant Rulemaking

On July 24, 2014, the FAA issued AD 2014-15-17, Amendment 39-17919
(79 FR 44268, July 31, 2014), for certain Bombardier, Inc. Model CL-
600-2B16 (CL-604 Variant) airplanes. AD 2014-15-17 requires revising
the airplane flight manual to incorporate temporary revisions that
introduce additional limitations for operation of taxi and landing
lights. AD 2014-15-17 requires revising the airplane flight manual only
for Bombardier, Inc. Model CL-600-2B16 (CL-604 Variant) airplanes,
serial numbers 5301 through 5665 inclusive, and 5701 and subsequent.
This AD requires repetitive inspections for any fuel leak in the right-
hand landing lights compartment, and related investigative and
corrective actions if necessary, for Bombardier, Inc. Model CL-600-2B16
(CL-601-3A, CL-601-3R, and CL-604 Variants) airplanes, serial numbers
5906, 5910, 5912, 5917, 5919 through 5932 inclusive, 5934, 5935, 5939,
5940, 5942, and 5948.

FAA's Determination and Requirements of This 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 issuing this AD because we
evaluated all pertinent information and determined the unsafe condition
exists and is likely to exist or develop on other products of the same
type design.

Differences Between This AD and the MCAI or Service Information

The MCAI and Bombardier Alert Service Bulletin A605-28-008,
Revision 02, dated July 9, 2014, do not specify corrective actions if
any cut is found on the wires or if any damage is found on the O-rings
during certain related investigative actions. This AD requires that a
replacement be done using a method approved by the FAA, TCCA, or
Bombardier, Inc.'s TCCA Design Approval Organization (DAO).

FAA's Determination of the Effective Date

An unsafe condition exists that requires the immediate adoption of
this AD. The FAA has found that the risk to the flying public justifies
waiving notice and comment prior to adoption of this rule because fuel
leaks in the right-hand landing lights compartment, 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. Therefore, we determined that notice and opportunity for
public comment before issuing this AD are impracticable and that good
cause exists for making this amendment effective in fewer than 30 days.

Comments Invited

This AD is a final rule that involves requirements affecting flight
safety, and we did not precede it by notice and opportunity for public
comment. We invite you to send any written relevant data, views, or
arguments about this AD. Send your comments to an address listed under
the ADDRESSES section. Include ``Docket No. FAA-2014-0650; Directorate
Identifier 2014-NM-162-AD'' at the beginning of your comments. We
specifically invite comments on the overall regulatory, economic,
environmental, and energy aspects of this AD. We will consider all
comments received by the closing date and may amend this 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 AD.

Interim Action

This AD is considered to be interim action. We are currently
considering requiring a replacement of the connector of the fuel boost
pump canister of the APU, and applicable related investigative and
corrective actions, which will constitute terminating action for the
repetitive inspections required by this AD action. However, the planned
compliance time for the replacement would allow enough time to provide
notice and opportunity for prior public comment on the merits of the
replacement and applicable related investigative and corrective
actions.

Costs of Compliance

We estimate that this AD affects 92 airplanes of U.S. registry.
We also estimate that it will take about 2 work-hours 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 $15,640, or $170 per product.
In addition, we estimate that any necessary follow-on actions will
take about 22 work-hours and require parts costing $0, for a cost of
$1,870 per product. We have no way of determining the number of
aircraft that might need these actions.
According to the manufacturer, some of the costs of this 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 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.

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

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