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[Federal Register Volume 81, Number 1 (Monday, January 4, 2016)]
[Proposed Rules]
[Pages 32-34]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-32888]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2015-8129; Directorate Identifier 2014-NM-197-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-604 Variant) airplanes. 
This proposed AD was prompted by a determination that certain 
maintenance tasks for the horizontal stabilizer trim actuator (HSTA) 
are inadequate. This proposed AD would require revising the maintenance 
or inspection program, as applicable, to incorporate new airworthiness 
limitations for the HSTA. We are proposing this AD to detect and 
correct premature wear and cracking of the HSTA, which could result in 
failure of the HSTA and consequent loss of control of the airplane.

DATES: We must receive comments on this proposed AD by February 18, 
2016.

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

[[Page 33]]

514-855-5000; 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.

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-
8129; 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: Cesar Gomez, Aerospace Engineer, 
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft 
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; telephone 516-228-7318; 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-2015-8129; 
Directorate Identifier 2014-NM-197-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-
2014-30, dated September 5, 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-604 Variant) airplanes. The MCAI states:

    A revision has been made to the CL 604/605 Time Limits/
Maintenance Checks (TLMC) manual, to introduce new tasks for the 
HSTA. Failure to comply with the TLMC tasks could lead to an unsafe 
condition.
    This [Canadian] AD is issued to ensure that premature wear and 
cracking of the affected components are detected and corrected.

    The unsafe condition is premature wear and cracking of the HSTA, 
which could result in failure of the HSTA and consequent loss of 
control of the airplane. 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-2015-8129.

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.
    This proposed AD would require revising the maintenance or 
inspection program to incorporate new airworthiness limitations for the 
HSTA.

Related Service Information Under 1 CFR Part 51

    Bombardier Inc. has issued the following service information.
     For Model CL-600-2B16 (CL-604 Variant) airplanes, serial 
numbers 5301 through 5665 inclusive: Task 27-42-01-109, Restoration 
(Overhaul) of the Horizontal Stabilizer Trim Actuator, Part No. 604-
92305-7 and Subs (Vendor Part No. 8454-3 and Subs); and Task 27-42-01-
111, Detailed Inspection of the Horizontal Trim Actuator (HSTA) 
Secondary Load Path Indicator, Part No. 604-92305-7 and Subs (Vendor 
Part No. 8454-3 and Subs); of Section 5-10-40, Certification 
Maintenance Requirements, of Part 2, Airworthiness Limitations, 
Revision 22, dated July 11, 2014, of the Bombardier Challenger 604 Time 
Limits/Maintenance Checks Manual.
     For Model CL-600-2B16 (CL-604 Variant) airplanes, serial 
numbers 5701 through 5962 inclusive: Task 27-42-01-109, Restoration 
(Overhaul) of the Horizontal Stabilizer Trim Actuator, Part No. 604-
92305-7 and Subs (Vendor Part No. 8454-3 and Subs); and Task 27-42-01-
111, Detailed Inspection of the Horizontal Trim Actuator (HSTA) 
Secondary Load Path Indicator, Part No. 604-92305-7 and Subs (Vendor 
Part No. 8454-3 and Subs); of Section 5-10-40, Certification 
Maintenance Requirements, of Part 2, Airworthiness Limitations, 
Revision 10, dated July 11, 2014, of the Bombardier Challenger 605 Time 
Limits/Maintenance Checks Manual.
    The service information describes procedures for revising the 
maintenance or inspection program to incorporate new airworthiness 
limitations for the HSTA. 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 of this NPRM.

Costs of Compliance

    We estimate that this proposed AD affects 78 airplanes of U.S. 
registry.
    We also estimate that it would take about 1 work-hour per product 
to comply with the basic requirements of this proposed AD. The average 
labor rate is $85 per work-hour. Based on these figures, we estimate 
the cost of this proposed AD on U.S. operators to be $6,630, or $85 per 
product.

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

[[Page 34]]

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-2015-8129; Directorate Identifier 
2014-NM-197-AD.

(a) Comments Due Date

    We must receive comments by February 18, 2016.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc. Model CL-600-2B16 (CL-604 
Variant) airplanes, certificated in any category, serial numbers 
5301 through 5665 inclusive, and 5701 through 5962 inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 27, Flight 
Controls.

(e) Reason

    This AD was prompted by a determination that certain maintenance 
tasks for the horizontal stabilizer trim actuator (HSTA) are 
inadequate. We are issuing this AD to detect and correct premature 
wear and cracking of the HSTA, which could result in failure of the 
HSTA and consequent loss of control of the airplane.

(f) Compliance

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

(g) Maintenance or Inspection Program Revision

    Within 30 days after the effective date of this AD: Revise the 
maintenance or inspection program, as applicable, to incorporate 
Task 27-42-01-109, Restoration (Overhaul) of the Horizontal 
Stabilizer Trim Actuator, Part No. 604-92305-7 and Subs (Vendor Part 
No. 8454-3 and Subs); and Task 27-42-01-111, Detailed Inspection of 
the Horizontal Trim Actuator (HSTA) Secondary Load Path Indicator, 
Part No. 604-92305-7 and Subs (Vendor Part No. 8454-3 and Subs); of 
the applicable document identified in paragraph (g)(1) or (g)(2) of 
this AD.
    (1) For Model CL-600-2B16 (CL-604 Variant) airplanes, serial 
numbers 5301 through 5665 inclusive: Section 5-10-40, Certification 
Maintenance Requirements, of Part 2, Airworthiness Limitations, 
Revision 22, dated July 11, 2014, of the Bombardier Challenger 604 
Time Limits/Maintenance Checks Manual.
    (2) For Model CL-600-2B16 (CL-604 Variant) airplanes, serial 
numbers 5701 through 5962 inclusive: Section 5-10-40, Certification 
Maintenance Requirements, of Part 2, Airworthiness Limitations, 
Revision 10, dated July 11, 2014, of the Bombardier Challenger 605 
Time Limits/Maintenance Checks Manual.

(h) No Alternative Actions or Intervals

    After the maintenance or inspection program has been revised, as 
required by paragraph (g) of this AD, no alternative actions (e.g., 
inspections) or intervals may be used unless the actions or 
intervals are approved as an alternative method of compliance (AMOC) 
in accordance with the procedures specified in paragraph (i)(1) of 
this AD.

(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 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: 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-2014-30, dated September 
5, 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-2015-8129.
    (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.

    Issued in Renton, Washington, on December 18, 2015.
Jeffrey E. Duven,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2015-32888 Filed 12-31-15; 8:45 am]
 BILLING CODE 4910-13-P
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