
[Federal Register Volume 81, Number 245 (Wednesday, December 21, 2016)]
[Rules and Regulations]
[Pages 93592-93595]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-29513]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2016-8847; Directorate Identifier 2016-NM-020-AD; 
Amendment 39-18742; AD 2016-25-16]
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-600-2E25 (Regional Jet Series 1000) 
airplanes. This AD was prompted by reports of two cases where the main 
landing gear (MLG) failed to fully extend; it was determined that 
interference between the MLG door and the MLG fairing seal prevented 
the MLG door from opening fully. This AD requires repetitive 
inspections of the MLG fairing, fairing seal, door, and adjacent 
structures; and replacement or repair of affected parts and fasteners, 
or removal of the MLG door, if necessary. This AD also requires 
installation of a safety guide in the MLG fairing and an increase of 
the spacing between the MLG door and the fairing, which would terminate 
the repetitive inspections. We are issuing this AD to address the 
unsafe condition on these products.

DATES: This AD is effective January 25, 2017.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of January 25, 
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 ac.yul@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. It is also available on 
the Internet at http://www.regulations.gov by searching for and 
locating Docket No. FAA-2016-8847.

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-
8847; 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: Fabio Buttitta, Aerospace Engineer,

[[Page 93593]]

Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft 
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, 
NY 11590; telephone 516-228-7303; 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 certain Bombardier, Inc. Model 
CL-600-2E25 (Regional Jet Series 1000) airplanes. The NPRM published in 
the Federal Register on August 26, 2016 (81 FR 58874) (``the NPRM'').
    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2015-30, dated December 30, 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-
2E25 (Regional Jet Series 1000) airplanes. The MCAI states:

    Two cases of main landing gear (MLG) failure to fully extend 
have been reported on model CL-600-2C10/-2D15/-2D24 aeroplanes. 
Investigation determined that interference between the MLG door and 
the MLG fairing seal prevented the MLG door from opening.
    Although model CL-600-2E25 aeroplanes feature new MLG door 
design, similar interference between the MLG door and the MLG 
fairing seal could exist on aeroplanes listed in the Applicability 
section of this [Canadian] AD. An MLG failing to extend may result 
in an unsafe asymmetric landing configuration.
    This [Canadian] AD mandates the repetitive inspection and 
rectification [which could include replacement or repair of affected 
parts and fasteners, or removal of the door, if necessary], as 
required, of the MLG fairing and seal, MLG door, and adjacent 
structures, until the mandatory terminating action is completed.

    The terminating action includes installation of a safety guide in 
the MLG fairing and an increase of the spacing between the MLG door and 
the fairing, which would terminate the repetitive inspections. 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-
8847.

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.
    We also determined that these changes will not increase the 
economic burden on any operator or increase the scope of this AD.

Related Service Information Under 1 CFR Part 51

    We reviewed Bombardier Service Bulletin 670BA-32-041, dated March 
28, 2013. The service information describes procedures for detailed 
inspections of the MLG fairing, fairing seal, door, and adjacent 
structures; replacement or repair of affected parts and fasteners and 
removal of the MLG door.
    We also reviewed Bombardier Service Bulletin 670BA-32-049, dated 
May 26, 2015. The service information describes procedures for 
installation of a safety guide in the MLG fairing and an increase of 
the spacing between the MLG door and the fairing.
    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 40 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 Installation......  50 work-hours x $85 per                 $0           $4,250         $170,000
                                    hour = $4,250.
----------------------------------------------------------------------------------------------------------------

    We have received no definitive data on the costs for the on-
condition repairs that will be required based on the results of the 
inspection.
    We estimate the following costs to do any necessary replacements/
removals that will be required based on the results of the required 
inspection. We have no way of determining the number of aircraft that 
might need these replacements/removals:

                                               On-Condition Costs
----------------------------------------------------------------------------------------------------------------
              Action                            Labor cost                   Parts cost        Cost per product
----------------------------------------------------------------------------------------------------------------
Replacement of damaged fairing     6 work-hours x $85 per hour = $510   $921 per seal......  $1,431 per seal
 seal.                              per seal replacement.                                     replacement.
Removal of MLG door..............  3 work-hours x $85 per hour = $255   0..................  255 per removal of
                                    per removal of MLG door.                                  MLG door.
----------------------------------------------------------------------------------------------------------------


                                                Optional Actions
----------------------------------------------------------------------------------------------------------------
                                                                                                     Cost per
                  Action                                Labor cost                 Parts cost        product
----------------------------------------------------------------------------------------------------------------
Installation of MLG door..................  13 work-hours x $85 per hour =                  $0           $1,105
                                             $1,105.
----------------------------------------------------------------------------------------------------------------


[[Page 93594]]

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):

2016-25-16 Bombardier, Inc.: Amendment 39-18742; Docket No. FAA-
2016-8847; Directorate Identifier 2016-NM-020-AD.

(a) Effective Date

    This AD is effective January 25, 2017.

 (b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc. Model CL-600-2E25 (Regional 
Jet Series 1000) airplanes, certificated in any category, serial 
numbers 19002 through 19041 inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 32, Landing 
gear.

(e) Reason

    This AD was prompted by reports of two cases where the main 
landing gear (MLG) failed to fully extend; it was determined that 
interference between the MLG door and the MLG fairing seal prevented 
the MLG door from opening fully. We are issuing this AD to detect 
and correct interference between the MLG door and the MLG fairing 
seal. Such interference could result in a MLG failing to fully 
extend, which could cause an unsafe asymmetric landing 
configuration.

(f) Compliance

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

(g) Inspection of MLG Fairing, Fairing Seal, Door, and Adjacent 
Structures

    Within 660 flight hours after the effective date of this AD, 
conduct a detailed inspection for damage to the MLG fairing, fairing 
seal, door, and adjacent structures, and for missing parts and 
fasteners, in accordance with Part A of the Accomplishment 
Instructions of Bombardier Service Bulletin 670BA-32-041, dated 
March 28, 2013. Repeat the inspection thereafter at intervals not to 
exceed 660 flight hours until the installation required by paragraph 
(m) of this AD is done.

(h) Replacement of MLG Fairing Seal or Door Removal

    If damage to the MLG fairing seal is found during any inspection 
required by paragraph (g) of this AD, before further flight, replace 
the seal, in accordance with Part B of the Accomplishment 
Instructions of Bombardier Service Bulletin 670BA-32-041, dated 
March 28, 2013; or remove the MLG door, in accordance with Part C of 
the Accomplishment Instructions of Bombardier Service Bulletin 
670BA-32-041, dated March 28, 2013.

(i) Repair of the MLG Door or MLG Door Removal

    If damage to the MLG door is found during any inspection 
required by paragraph (g) of this AD, 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); or remove the MLG door, in accordance with Part 
C of the Accomplishment Instructions of Bombardier Service Bulletin 
670BA-32-041, dated March 28, 2013.

(j) Repair of the MLG Fairing

    If damage to the MLG fairing is found during any inspection 
required by paragraph (g) of this AD, before further flight, repair 
using a method approved by the Manager, New York ACO, ANE-170, FAA; 
or TCCA; or Bombardier, Inc.'s TCCA DAO.

(k) Repair of the Adjacent Structure and Other Corrective Actions

    If damage to the adjacent structure is found or if any part or 
fastener is found missing or damaged during any inspection required 
by paragraph (g) of this AD, before further flight, do the 
applicable actions specified in paragraphs (k)(1) and (k)(2) of this 
AD.
    (1) Replace missing or damaged parts and fasteners, in 
accordance with Part A of the Accomplishment Instruction of 
Bombardier Service Bulletin 670BA-32-041, dated March 28, 2013, 
except where Bombardier Service Bulletin 670BA-32-041, dated March 
28, 2013, specifies to contact Bombardier, before further flight, 
repair using a method approved by the Manager, New York ACO, ANE-
170, FAA; or TCCA; or Bombardier, Inc.'s TCCA DAO.
    (2) Repair damaged structure using a method approved by the 
Manager, New York ACO, ANE-170, FAA; or TCCA; or Bombardier, Inc.'s 
TCCA DAO.

(l) Reinstallation of the MLG Door

    For any MLG door that has been removed as specified in paragraph 
(h) or (i) of this AD: Reinstallation of the door, if accomplished, 
must be done in accordance with Part D of the Accomplishment 
Instructions of Bombardier Service Bulletin 670BA-32-041, dated 
March 28, 2013. Before further flight after any reinstallation, the 
inspection required by paragraph (g) of this AD must be done and the 
inspection must be repeated thereafter at the times specified in 
paragraph (g) of this AD until the installation required by 
paragraph (m) of this AD is done.

(m) Installation of a Safety Guide on the MLG Fairing and Increase of 
Spacing Between MLG Door and Fairing

    Except as required by paragraph (n) of this AD: Within 6,600 
flight hours or 36 months, whichever occurs first, after the 
effective date of this AD, install a safety guide on the MLG fairing 
and increase the spacing between the MLG door and the fairing, in 
accordance with the Accomplishment Instructions of Bombardier 
Service Bulletin 670BA-32-049, dated May 26, 2015. Accomplishment of 
these actions terminates the requirements of paragraphs (g) and (l) 
of this AD.

(n) Provisions for Removed/Reinstalled Doors

    If the MLG door has been removed in accordance with Part C of 
the Accomplishment Instructions of Bombardier

[[Page 93595]]

Service Bulletin 670BA-32-041, dated March 28, 2013, the 
installation required by paragraph (m) of this AD may be delayed 
until the MLG door is reinstalled in accordance with paragraph (l) 
of this AD. When the removed MLG door is reinstalled, the 
installation required by paragraph (m) of this AD must be done at 
the time specified in paragraph (m) of this AD or before further 
flight after reinstallation of the removed MLG door, whichever 
occurs later.

(o) 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.

(p) Related Information

    Refer to Mandatory Continuing Airworthiness Information (MCAI) 
Canadian Airworthiness Directive CF-2015-30, dated December 30, 
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-2016-8847.

(q) 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 670BA-32-041, dated March 28, 
2013.
    (ii) Bombardier Service Bulletin 670BA-32-049, dated May 26, 
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 
ac.yul@aero.bombardier.com; 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.govfxsp0;/
federal-registerfxsp0;/cfr/ibr-locations.htmlfxsp0;.

    Issued in Renton, Washington, on December 1, 2016.
Michael Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-29513 Filed 12-20-16; 8:45 am]
BILLING CODE 4910-13-P


