81 FR 87422 - Airworthiness Directives; Bombardier, Inc. Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 81, Issue 233 (December 5, 2016)

We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2A12 (CL-601 Variant), and CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604 Variants) airplanes. This AD was prompted by a report that a potential chafing condition exists between the negative-G fuel feed drain line of the auxiliary power unit (APU) and its surrounding structure and components. This AD requires, for certain airplanes, a detailed inspection for chafing conditions of the negative-G fuel feed drain line of the APU, and corrective actions if necessary. For certain other airplanes, this AD requires replacement of the APU negative-G fuel feed tube assembly and the drain line. We are issuing this AD to address the unsafe condition on these products.

[Federal Register Volume 81, Number 233 (Monday, December 5, 2016)]
[Rules and Regulations]
[Pages 87422-87424]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-28340]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2016-7418; Directorate Identifier 2015-NM-163-AD; 
Amendment 39-18675; AD 2016-20-09]
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 
Bombardier, Inc. Model CL-600-2A12 (CL-601 Variant), and CL-600-2B16 
(CL-601-3A, CL-601-3R, and CL-604 Variants) airplanes. This AD was 
prompted by a report that a potential chafing condition exists between 
the negative-G fuel feed drain line of the auxiliary power unit (APU) 
and its surrounding structure and components. This AD requires, for 
certain airplanes, a detailed inspection for chafing conditions of the 
negative-G fuel feed drain line of the APU, and corrective actions if 
necessary. For certain other airplanes, this AD requires replacement of 
the APU negative-G fuel feed tube assembly and the drain line. We are 
issuing this AD to address the unsafe condition on these products.

DATES: This AD is January 9, 2017.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of January 9, 
2017.

ADDRESSES: For service information identified in this final rule, 
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. It is also available on 
the Internet at http://www.regulations.gov by searching for and 
locating Docket No. FAA-2016-7418.

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-2016-
7418; 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 Office (telephone 
800-647-5527) is 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 20590.

FOR FURTHER INFORMATION CONTACT: Norman Perenson, Aerospace Engineer, 
Propulsion and Services Branch, ANE-173, FAA, New York Aircraft 
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, 
NY 11590; telephone: 516-228-7337; 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 Variant), and CL-600-2B16 (CL-601-3A, CL-601-
3R, and CL-604 Variants) airplanes. The NPRM published in the Federal 
Register on June 28, 2016 (81 FR 41889) (``the NPRM''). The NPRM was 
prompted by a report that a potential chafing condition exists between 
the negative-G fuel feed drain line of the APU and its surrounding 
structure and components. The NPRM proposed to require, for certain 
airplanes, a detailed inspection for chafing conditions of the 
negative-G fuel feed drain line of the APU, and corrective actions if 
necessary. For certain other airplanes, the NPRM proposed to require 
replacement of the APU negative-G fuel feed tube assembly and the drain 
line. We are issuing this AD to prevent a chafing condition in the 
negative-G fuel feed drain line, which can result in fuel leaking from 
the drain line. This condition, in combination with a nearby hot 
surface or other potential ignition source, could result in an 
uncontrolled fire in the aft equipment bay.
    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian AD CF-2015-26, dated August 
31, 2015 (referred to after this as the Mandatory Continuing 
Airworthiness Information, or ``the MCAI''), to correct an unsafe 
condition for certain Bombardier, Inc. Model CL-600-2A12 (CL-601 
Variant) and CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604 Variants) 
airplanes. The MCAI states:

    It was reported that a potential chaffing condition exist 
between the Auxiliary Power Unit (APU) negative-G fuel feed drain 
line and its surrounding structure and components. Leakage of the 
negative-G fuel feed drain line is a dormant failure, however, in 
combination with a nearby hot surface or other potential ignition 
source, could result in an uncontrolled fire in the aft equipment 
bay.
    This [Canadian] AD mandates [for certain airplanes] the detailed 
visual inspection [for chafing conditions, e.g., fouling between the 
drain line and other components and insufficient clearance] and, if 
required, rectification [corrective actions], to ensure required 
clearance between the APU negative-G fuel feed drain line and its 
surrounding structure and components [and, for certain other 
airplanes, this [Canadian] AD mandates replacement of the APU 
negative-G fuel feed tube assembly and the drain line].

    Corrective actions include replacing the APU negative-G fuel feed 
drain line. 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-2016-7418.

Comments

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

Conclusion

    We reviewed the relevant data and determined that air safety and 
the public interest require adopting this AD as proposed except for 
minor editorial changes. We have determined that these minor changes:
     Are consistent with the intent that was proposed in the 
NPRM for correcting the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.

[[Page 87423]]

Related Service Information Under 1 CFR Part 51

    We reviewed the following Bombardier, Inc. service information.
     Bombardier Service Bulletin 601-0640, dated May 19, 2015; 
and Bombardier Service Bulletin 604-28-021, dated May 19, 2015. This 
service information describes procedures for a detailed inspection for 
chafing conditions of the negative-G fuel feed drain line of the APU, 
and corrective actions. These service bulletins are distinct since they 
apply to different airplane models.
     Bombardier Service Bulletin 605-28-009, dated May 19, 
2015. This service information describes procedures for a detailed 
inspection for chafing conditions of the negative-G fuel feed drain 
line of the APU, replacement of the APU negative-G fuel feed tube 
assembly and the drain line, and corrective actions.
    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 504 airplanes of U.S. registry.
    We estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
              Action                        Labor cost            Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
Inspection and Modification.......  22 work-hours x $85 per            $6,334           $8,204       $4,134,816
                                     hour = $1,870.
----------------------------------------------------------------------------------------------------------------

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

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):

2016-20-09 Bombardier, Inc.: Amendment 39-18675; Docket No. FAA-
2016-7418; Directorate Identifier 2015-NM-163-AD.

(a) Effective Date

    This AD is effective January 9, 2017.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc. airplanes, certificated in 
any category, identified in paragraphs (c)(1), (c)(2), and (c)(3) of 
this AD.
    (1) Model CL-600-2A12 (CL-601 Variant) airplanes, having serial 
numbers (S/Ns) 3001 through 3066 inclusive.
    (2) Model CL-600-2B16 (CL-601-3A and CL-601-3R Variants) 
airplanes, having S/Ns 5001 through 5194 inclusive.
    (3) Model CL-600-2B16 (CL-604 Variant) airplanes, having S/Ns 
5301 through 5665 inclusive, and 5701 through 5970 inclusive.

(d) Subject

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

(e) Reason

    This AD was prompted by a report that a potential chafing 
condition exists between the negative-G fuel feed drain line of the 
auxiliary power unit (APU) and its surrounding structure and 
components. We are issuing this AD to prevent a chafing condition in 
the negative-G fuel feed drain line, which can result in fuel 
leaking from the drain line. This condition, in combination with a 
nearby hot surface or other potential ignition source, could result 
in an uncontrolled fire in the aft equipment bay.

(f) Compliance

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

(g) Inspection and Corrective Action for Certain Airplanes

    Within 24 months after the effective date of this AD, comply 
with the applicable actions specified in paragraphs (g)(1) through 
(g)(3) of this AD, except as required by paragraph (i) of this AD. 
Do all applicable corrective actions before further flight.
    (1) For Model CL-600-2A12 (CL-601 Variant) airplanes, having S/
Ns 3001 through 3066 inclusive; and Model CL-600-2B16 (CL-601-3A and 
CL-601-3R Variants) airplanes, having S/Ns 5001 through 5194 
inclusive: Do a detailed inspection for chafing conditions of the 
negative-G fuel feed drain line of the APU, and do all applicable 
corrective actions, in accordance with the Accomplishment 
Instructions of Bombardier Service Bulletin 601-0640, dated May 19, 
2015.
    (2) For Model CL-600-2B16 (CL-604 Variant) airplanes, having S/
Ns 5301 through 5665 inclusive: Do a detailed inspection for chafing 
conditions of the negative-G fuel feed drain line of the APU, and do 
all applicable corrective actions, in accordance with the 
Accomplishment Instructions of Bombardier Service Bulletin 604-28-
021, dated May 19, 2015.

[[Page 87424]]

    (3) For Model CL-600-2B16 (CL-604 Variant) airplanes, having S/
Ns 5701 through 5913 inclusive, 5917, 5918, and 5923 through 5970 
inclusive: Do a detailed inspection for chafing conditions of the 
negative-G fuel feed drain line of the APU, and do all applicable 
corrective actions, in accordance with the Accomplishment 
Instructions in Part A and, if applicable, Part B of Bombardier 
Service Bulletin 605-28-009, dated May 19, 2015.

(h) Modification for Certain Other Airplanes

    For Model CL-600-2B16 (604 Variant) airplanes having S/Ns 5914 
through 5916 inclusive and 5919 through 5922 inclusive: Within 24 
months after the effective date of this AD, replace the APU 
negative-G fuel feed tube assembly and the drain line, in accordance 
with Part C of the Accomplishment Instructions of Bombardier Service 
Bulletin 605-28-009, dated May 19, 2015.

    Note 1 to paragraph (h) of this AD: An inspection is not 
required.

(i) Service Information Exception

    Where any service information identified in paragraphs (g)(1), 
(g)(2), and (g)(3) of this AD specifies to contact the manufacturer 
for corrective action, before further flight, repair 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).

(j) 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.
    (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 TCCA; or Bombardier, Inc.'s TCCA DAO. If approved 
by the DAO, the approval must include the DAO-authorized signature.

(k) Related Information

    Refer to Mandatory Continuing Airworthiness Information (MCAI) 
Canadian AD CF-2015-26, dated August 31, 2015, 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-2016-7418.

(l) 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 601-0640, dated May 19, 2015.
    (ii) Bombardier Service Bulletin 604-28-021, dated May 19, 2015.
    (iii) Bombardier Service Bulletin 605-28-009, dated May 19, 
2015.
    (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.
    (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 September 19, 2016.
Dionne Palermo,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-28340 Filed 12-2-16; 8:45 am]
 BILLING CODE 4910-13-P