[Federal Register Volume 82, Number 105 (Friday, June 2, 2017)]
[Proposed Rules]
[Pages 25556-25559]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-11002]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0521; Directorate Identifier 2016-NM-189-AD]
RIN 2120-AA64


Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to adopt 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 proposed AD was prompted by reports of 
fuel leaks in the engine and auxiliary power unit (APU) electrical fuel 
pump (EFP) cartridge/canister electrical connectors and conduits. This 
proposed AD would require repetitive inspections for fuel leakage at 
the engine and APU fuel pumps, and related investigative and corrective 
actions if necessary. We are proposing this AD to address the unsafe 
condition on these products.

DATES: We must receive comments on this proposed AD by July 17, 2017.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:

[[Page 25557]]

     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: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    For service information identified in this NPRM, contact 
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec 
H4S 1Y9, Canada; Widebody Customer Response Center North America toll-
free telephone 1-866-538-1247 or direct-dial telephone 1-514-855-2999; 
fax 514-855-7401; email [email protected]; 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.

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-2017-
0521; 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: Steven Dzierzynski, Aerospace 
Engineer, Avionics and Services Branch, ANE-172, FAA, New York Aircraft 
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; telephone 516-228-7367; 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-2017-0521; 
Directorate Identifier 2016-NM-189-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

    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2016-32R1, dated October 12, 2016 (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:

    Fuel leaks have been reported in the engine and auxiliary power 
unit (APU) electrical fuel pump (EFP) cartridge/canister electrical 
connectors and conduits on production aeroplanes. Initially, 
Bombardier had determined that the subject discrepancy was limited 
to the new pump canister installations on 24 production aeroplanes. 
Bombardier also reported the possibility of cut insulation on the 
electric harness wires of the newly installed canister housing 
assemblies.
    Emergency [Canadian] AD CF-2014-17 [which corresponds to FAA AD 
2014-15-17, Amendment 39-17919 (79 FR 44268, July 31, 2014)] was 
issued to limit landing light operation on-ground in order to 
address a potential fire hazard as result of possible fuel leak from 
APU, EFP electrical conduit in the landing light compartment. In 
addition, [Canadian] AD CF-2014-21 [which corresponds to FAA AD 
2014-20-01, Amendment 39-17974 (79 FR 59640, October 3, 2014), 
superseded by FAA AD 2016-10-10, Amendment 39-18521 (81 FR 31497, 
May 19, 2016)(``AD 2016-10-10'')] was issued to mandate removal of 
then identified 24 discrepant EFP canister assemblies from service.
    Bombardier has recently determined that the subject fuel leaks 
may not be limited to the 24 units affected by [Canadian] AD CF-
2014-21 [(AD 2016-10-10)], but may potentially affect other in-
service [Bombardier Model] CL-600-2B16 aeroplanes. Until such time 
that a final fix for the fuel leak problem is realized, Bombardier 
as an interim mitigating action, has issued [Service Bulletins] SB 
604-28-022 and SB 605-28-010 that introduces [a] repeat [general 
visual] inspection and if required, rectification [related 
investigative and corrective actions] of subject fuel leaks on 
affected aeroplanes. [Canadian] AD CF-2016-32 was issued on 29 
September 2016 to mandate compliance with applicable Bombardier SBs, 
to mitigate any potential safety hazard resulting from fuel leaks.
    Revision 1 of this [Canadian] AD is being issued to correct a 
typographic error in paragraph B.1. of the [Canadian AD] Corrective 
Actions.

    Related investigative actions involve, for certain airplanes, 
further inspections for fuel leakage. Corrective actions involve 
repair, and for certain other airplanes, those actions could include 
replacing O-rings, and replacing the fuel cartridge. 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-2017-0521.

Related Service Information Under 1 CFR Part 51

    Bombardier, Inc., has issued the following service bulletins:
     Bombardier Service Bulletin 604-28-022, dated October 19, 
2015; and
     Bombardier Service Bulletin 605-28-010, dated October 19, 
2015.
    The service information describes procedures for repetitive general 
visual inspections, and related investigative and corrective actions if 
necessary. These documents are distinct since they apply to airplanes 
in different configurations. 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.

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 121 airplanes of U.S. 
registry.
    We estimate the following costs to comply with this proposed AD:

[[Page 25558]]



                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
General Visual Inspection.............  1 work-hour x $85 per                 $0             $85         $10,285
                                         hour = $85.
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    For Model CL-600-2B16 airplanes, having serial numbers 5701 through 
5955 inclusive, 5957, 5960 through 5966 inclusive, 5968 through 5971 
inclusive, and 5981, we estimate the following costs to do any 
necessary replacements that would be required based on the results of 
the proposed inspection. We have no way of determining the number of 
aircraft that might need these replacements:

                                               On-Condition Costs
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                                                                                                     Cost per
                    Action                                 Labor cost               Parts cost        product
----------------------------------------------------------------------------------------------------------------
Replace O-Ring in Affected Pump...............  3 work-hours x $85 per hour =                $17            $272
                                                 $255.
Replace Cartridge in Affected Pump............  2 work-hours x $85 per hour =              8,618           8,788
                                                 $170.
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    For Model CL-600-2B16 airplanes having serial numbers 5301 through 
5665 inclusive, we have received no definitive data that would enable 
us to provide cost estimates for the on-condition actions specified in 
this proposed AD.
    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 adding the following new airworthiness 
directive (AD):

Bombardier, Inc.: Docket No. FAA-2017-0521; Directorate Identifier 
2016-NM-189-AD.

(a) Comments Due Date

    We must receive comments by July 17, 2017.

(b) Affected ADs

    None.

(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, having serial numbers 5301 through 5665 inclusive, 5701 
through 5955 inclusive, 5957, 5960 Through 5966 inclusive, 5968 
through 5971 inclusive, and 5981.

(d) Subject

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

(e) Reason

    This proposed AD was prompted by reports of fuel leaks in the 
engine and auxiliary power unit (APU) electrical fuel pump (EFP) 
cartridge/canister electrical connectors and conduits. We are 
issuing this AD to detect and correct fuel leaks in certain fuel 
pumps to remove a potential fuel ignition hazard.

(f) Compliance

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

(g) General Visual Inspection and Corrective Action--Model CL-600-2B16 
Airplanes, Serial Numbers 5301 Through 5665 Inclusive

    For Model CL-600-2B16 airplanes, having serial numbers 5301 
through 5665 inclusive:
    Within 600 flight hours or 12 months, whichever occurs first, 
after the effective date of this AD, do general visual inspections 
of the locations specified in paragraphs (g)(1), (g)(2), and (g)(3) 
of this AD, and do all applicable corrective actions, in accordance 
with the Accomplishment Instructions of Bombardier Service Bulletin 
604-28-022, dated October 19, 2015; except where the Bombardier 
Service Bulletin 604-28-022, dated October 19, 2015 specifies to 
contact the manufacturer, before further flight accomplish 
corrective action in accordance with the procedures specified in 
paragraph (i)(2) of this AD. Do all applicable corrective

[[Page 25559]]

actions before further flight. Repeat the general visual inspections 
at intervals not exceeding 600 flight hours or 12 months, whichever 
occurs first.
    (1) Do a general visual inspection for traces of fuel coming 
from the right-hand side engine boost pump at the location of the 
belly fairing screw (FS412, BL 0.0).
    (2) Do a general visual inspection for traces of fuel coming 
from the left-hand side engine boost pump at the location of the 
belly fairing screw (FS412, BL 0.0).
    (3) Do a general visual inspection for traces of fuel coming 
from the EFP electrical wiring conduit outlet at the lower body 
fairing area for engine EFPs and at the right-hand landing light 
compartment for the APU EFP.

(h) General Visual Inspection and Corrective Action--Model CL-600-2B16 
Airplanes, Having Serial Numbers 5701 Through 5955 Inclusive, 5957, 
5960 Through 5966 Inclusive, 5968 Through 5971 Inclusive, and 5981

    For Model CL-600-2B16 airplanes, having serial numbers 5701 
through 5955 inclusive, 5957, 5960 through 5966 inclusive, 5968 
through 5971 inclusive, and 5981: Within 600 flight hours or 12 
months, whichever occurs first, after the effective date of this AD, 
do general visual inspections of the locations specified in 
paragraphs (h)(1), (h)(2), and (h)(3) of this AD, and do all 
applicable related investigative and corrective actions, in 
accordance with the Accomplishment Instructions in Bombardier 
Service Bulletin 605-28-010, dated October 19, 2015; except where 
Bombardier Service Bulletin 605-28-010, dated October 19, 2015 
specifies to contact the manufacturer, before further flight 
accomplish corrective actions in accordance with the procedures 
specified in paragraph (i)(2) of this AD. Do all applicable related 
investigative and corrective actions before further flight. Repeat 
the general visual inspections at intervals not exceeding 600 flight 
hours or 12 months, whichever occurs first.
    (1) Do a general visual inspection for traces of fuel coming 
from the right-hand side engine boost pump at the location of the 
belly fairing screw (FS412, BL 0.0).
    (2) Do a general visual inspection for traces of fuel coming 
from the left-hand side engine boost pump at the location of the 
belly fairing screw (FS412, BL 0.0).
    (3) Do a general visual inspection of the right-hand side 
landing light compartment for traces of fuel coming from the APU 
EFP.

(i) 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 manager of 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.
    (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, 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-2016-32R1, dated October 
12, 2016, 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-2017-0521.
    (2) For more information about this AD, contact Steven 
Dzierzynski, Aerospace Engineer, Avionics and Services Branch, ANE-
172, FAA, New York Aircraft Certification Office (ACO), 1600 Stewart 
Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7367; fax 
516-794-5531; email: [email protected].
    (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; Widebody Customer Response Center 
North America toll-free telephone 1-866-538-1247 or direct-dial 
telephone 1-514-855-2999; fax 514-855-7401; email 
[email protected]; 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 May 19, 2017.
Victor Wicklund,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2017-11002 Filed 6-1-17; 8:45 am]
BILLING CODE 4910-13-P