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2019-15-01 BOMBARDIER, INC.: Amendment 39-19694; Docket No. FAA-2019-0186; Product Identifier 2018-NM-153-AD.
(a) EFFECTIVE DATE

    This AD is effective September 19, 2019.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This  AD  applies to all Bombardier, Inc.,  Model CL-600-2B16 (601-3A,
    601-3R, and 604 Variants) airplanes, certificated in any category.

(d) SUBJECT

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

(e) REASON

    This AD was  prompted by a  report that main  landing gear (MLG)  side
    stay  actuators  have  been assembled  using nonconforming  split ball
    bearings. The FAA is issuing this AD to address the affected bearings,
    which could  potentially result  in asymmetric  MLG gear  extension or
    retraction, and subsequent gear collapse during landing.

(f) COMPLIANCE

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

(g) INSPECTION TO VERIFY THE SERIAL NUMBER

    For airplane serial numbers  (S/Ns) 5301 through 5665  inclusive, 5701
    through 5988 inclusive, and 6050 through 6091 inclusive, equipped with
    any MLG side stay actuator assembly containing split ball bearing part
    number (P/N) 104467672: For the left and right MLG side stay  actuator
    assemblies having P/Ns 19011-103 and 19011-105, at the applicable time
    specified in figure 1 to paragraphs (g) and (h) of this AD, perform an
    inspection to verify the serial number, in accordance with  paragraphs
    2.A. and  2.B. of  the Accomplishment  Instructions of  the applicable
    service information specified in figure 2 to paragraphs (g), (h),  and
    (i) of this AD.

             FIGURE 1 TO PARAGRAPHS (G) AND (H) – COMPLIANCE TIMES        
    ______________________________________________________________________
        TOTAL FLIGHT CYCLES                      COMPLIANCE TIME
    ______________________________________________________________________
    As of the effective date of this     Before the MLG side stay actuator
    AD: 3,350 total flight cycles or     assembly reaches 3,750 total
    fewer on an MLG side stay            flight cycles or 48 months from
    actuator assembly                    the effective date of this AD,
                                         whichever occurs first.

    As of the effective date of this     Within 400 flight cycles or 12
    AD: more than 3,350 total            months from the effective date of
    flight cycles on an MLG side         this AD, whichever occurs first.
    stay actuator assembly
    ______________________________________________________________________

        FIGURE 2 TO PARAGRAPHS (G), (H), AND (I) – SERVICE INFORMATION    
    ______________________________________________________________________
       MODEL                AIRPLANE S/N           SERVICE INFORMATION
    ______________________________________________________________________
                          5301 through 5665    Bombardier Service Bulletin
                          inclusive            604-32-029, Revision 02,
                                               dated May 10, 2018
    CL-600-2B16
    (601-3A, 601-3R,      5701 through 5988    Bombardier Service Bulletin
    and 604 Variants)     inclusive            605-32-006, Revision 02,
    airplanes                                  dated May 10, 2018

                          6050 through 6091    Bombardier Service Bulletin
                          inclusive            650-32-002, Revision 02,
                                               dated May 10, 2018
    ______________________________________________________________________

(h) REPLACEMENT

    If, during the inspection specified  in paragraph (g) of this  AD, the
    identified serial  number of  the MLG  side stay  actuator assembly is
    listed in table 1 or table  2 of paragraph 2.B. of the  Accomplishment
    Instructions of the applicable service information specified in figure
    2 to paragraphs (g), (h), and  (i) of this AD: At the  applicable time
    specified in figure 1  to paragraphs (g) and  (h) of this AD,  replace
    the  split  ball  bearing having  P/N  104467672,  in accordance  with
    paragraph 2.C.  of the  Accomplishment Instructions  of the applicable
    service information specified in figure 2 to paragraphs (g), (h),  and
    (i) of this AD. If the  identified serial number of the MLG  side stay
    actuator assembly is  not listed in  table 1 or  table 2 of  paragraph
    2.B.  of  the  Accomplishment Instructions  of the  applicable service
    information specified in figure 2  to paragraphs (g), (h), and  (i) of
    this AD, no further action is required by this paragraph.

(i) PARTS INSTALLATION LIMITATION

    As of the  effective date of  this AD, no  person may install,  on any
    Bombardier, Inc., Model CL-600-2B16 (601-3A, 601-3R, and 604 Variants)
    airplanes, an  MLG side  stay actuator  assembly with  a serial number
    listed in table 1 or table  2 of paragraph 2.B. of the  Accomplishment
    Instructions of the applicable service information specified in figure
    2 to paragraphs (g),  (h), and (i) of  this AD, unless the  split ball
    bearing having P/N 104467672 has been previously replaced as specified
    in paragraph (h) of this AD.

(j) CREDIT FOR PREVIOUS ACTIONS

    This paragraph provides credit  for actions required by  paragraph (g)
    of this AD, if those actions were performed before the effective  date
    of this AD using the service information in paragraphs (j)(1)  through
    (j)(3) of this AD.

(1) Bombardier Service Bulletin 604-32-029, Revision 01, dated February 5,
    2018.

(2) Bombardier Service Bulletin 605-32-006, Revision 01, dated February 5,
    2018.

(3) Bombardier Service Bulletin 650-32-002, Revision 01, dated February 5,
    2018.

(k) OTHER FAA AD PROVISIONS

    The following provisions also apply to this AD:

(1) Alternative Methods of Compliance (AMOCs):  The Manager,  New York ACO
    Branch,  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 certification office,  send
    it to ATTN: Program  Manager, Continuing Operational Safety,  FAA, New
    York ACO Branch, 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
    Branch, 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.

(l) RELATED INFORMATION

(1) Refer   to   Mandatory  Continuing  Airworthiness  Information  (MCAI)
    Canadian AD CF-2018-26R1, dated May 22, 2019, 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-2019-0186

(2) For more information about this AD, contact Darren Gassetto, Aerospace
    Engineer, Mechanical Systems and Administrative Services Section, FAA,
    New York ACO Branch, 1600 Stewart Ave., Suite 410, Westbury, NY 11590;
    telephone 516-228-7323;  fax 516-794-5531;  email 9-avs-nyaco-cos@faa.
    gov.

(3) Service information  identified in this AD that is not incorporated by
    reference is available at the addresses specified in paragraphs (m)(3)
    and (m)(4) of this AD.

(m) 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 604-32-029,  Revision 02,  dated  May 10,
    2018.

(ii) Bombardier Service Bulletin 605-32-006,  Revision 02,  dated  May 10,
     2018.

(iii) Bombardier Service Bulletin 650-32-002,  Revision 02,  dated May 10,
      2018.

(3) For service information  identified  in this AD,  contact  Bombardier,
    Inc.,  400 Côte-Vertu Road West, Dorval, Québec H4S 1Y9, Canada; Wide-
    body Customer Response Center North America toll-free telephone 1-866-
    538-1247 or direct-dial telephone 1-514-855-2999; fax 514-855-7401; e-
    mail ac.yul@aero.bombardier.com; Internet http://www.bombardier.com.

(4) You may view this service information at the FAA,  Transport Standards
    Branch,  2200 South 216th St., Des Moines, WA.  For information on the
    availability of this material at the FAA, call 206-231-3195.

(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 Des Moines, Washington, on July 23, 2019. Michael Kaszycki, Act-
ing Director, System Oversight Division, Aircraft Certification Service.

FOR FURTHER INFORMATION CONTACT:  Darren  Gassetto,   Aerospace  Engineer,
Mechanical Systems and Administrative Services Section,  FAA, New York ACO
Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-
228-7323; fax 516-794-5531; email 9-avs-nyaco-cos@faa.gov.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2019-0186; Product Identifier 2018-NM-153-AD; Amendment
39-19694; AD 2019-15-01]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc., Airplanes

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

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all
Bombardier, Inc., Model CL-600-2B16 (601-3A, 601-3R, and 604 Variants)
airplanes. This AD was prompted by a report that main landing gear
(MLG) side stay actuators have been assembled using nonconforming split
ball bearings. This AD requires verification of the serial numbers of
the installed MLG side stay actuator assemblies, and replacement of the
affected parts. The FAA is issuing this AD to address the unsafe
condition on these products.

DATES: This AD is effective September 19, 2019.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of September 19,
2019.

ADDRESSES: For service information identified in this final rule,
contact Bombardier, Inc., 400 Cote-Vertu Road West, Dorval,
Quebec 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 service
information at the FAA, Transport Standards Branch, 2200 South 216th
St., Des Moines, WA. For information on the availability of this
material at the FAA, call 206-231-3195. It is also available on the
internet at http://www.regulations.gov by searching for and locating
Docket No. FAA-2019-0186.

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-2019-
0186; or in person at Docket Operations between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays. The AD docket contains
this final rule, the regulatory evaluation, any comments received, and other
information. The address for Docket Operations is 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: Darren Gassetto, Aerospace Engineer,
Mechanical Systems and Administrative Services Section, FAA, New York
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7323; fax 516-794-5531; email 9-avs-nyaco-cos@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to all Bombardier, Inc.,
Model CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. The
NPRM published in the Federal Register on May 14, 2019 (84 FR 21273).
The NPRM was prompted by a report that MLG side stay actuators have
been assembled using nonconforming split ball bearings. The NPRM
proposed to require verification of the serial numbers of the installed
MLG side stay actuator assemblies, and replacement of the affected
parts.
The FAA is issuing this AD to address the affected bearings, which
could potentially result in asymmetric MLG gear extension or
retraction, and subsequent gear collapse during landing.
In the NPRM, the FAA referred to Canadian AD CF-2018-26, dated
October 5, 2018. However, since the NPRM was issued, Transport Canada
Civil Aviation (TCCA), the civil aviation authority for Canada, issued
Canadian AD CF-2018-26R1, dated May 22, 2019 (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 (601-3A, 601-3R, and 604 Variants) airplanes. The MCAI states:

The landing gear supplier has informed Bombardier Inc. about a
quality escape involving Main Landing Gear (MLG) side stay actuators
that have been assembled using non-conforming split ball bearings.
The affected bearings are manufactured from material that does not
meet the required material properties. If not corrected, this
condition can result in potentially asymmetric MLG gear extension or
retraction and subsequent gear collapse during landing.
The original version of this [Canadian] AD mandated . . .
verification of the installed MLG side stay actuator assemblies and
replacement of the affected parts.
Revision 1 of this [Canadian] AD is issued to add a reference to
Table 2 in the applicable Service Bulletins (SBs) that list affected
serial numbers for P/N 19011-105.

The FAA has determined that the revised MCAI has no effect on
airplanes on which the actions identified in the NPRM were completed.
The FAA has revised paragraph (l)(1) of this AD to refer to Canadian AD
CF-2018-26R1, dated May 22, 2019.
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-2019-0186.

Comments

The FAA gave the public the opportunity to participate in
developing this final rule. The FAA received no comments on the NPRM or
on the determination of the cost to the public.

Conclusion

The FAA reviewed the relevant data and determined that air safety
and the public interest require adopting this final rule with the
change described previously and minor editorial changes. The FAA has
determined that these minor changes:
Are consistent with the intent that was proposed in the
NPRM for addressing the unsafe condition; and
Do not add any additional burden upon the public than was
already proposed in the NPRM.
The FAA also determined that this change will not increase the
economic burden on any operator or increase the scope of this final
rule.

Related Service Information Under 1 CFR Part 51

Bombardier has issued the following service information.
Bombardier Service Bulletin 604-32-029, Revision 02, dated
May 10, 2018.
Bombardier Service Bulletin 605-32-006, Revision 02, dated
May 10, 2018.
Bombardier Service Bulletin 650-32-002, Revision 02, dated
May 10, 2018.
The service information describes procedures to verify the serial
numbers of the installed MLG side stay actuator assemblies and to
replace the affected parts. These documents are distinct since they
apply to the airplane model 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.

Costs of Compliance

The FAA estimates that this AD affects 384 airplanes of U.S.
registry. The agency estimates the following costs to comply with this
AD:

Estimated Costs for Required Actions

Labor cost
Parts cost
Cost per product
Cost on U.S. operators
1 work-hour x $85 per hour = $85
$0
$85
$32,640

The FAA estimates the following costs to do any necessary on-
condition action that would be required based on the results of any
required actions. The agency has no way of determining the number of
aircraft that might need this on-condition action:

Estimated Costs of On-Condition Actions

Labor cost
Parts cost
Cost per product
Up to 7 work-hours x $85 per hour = Up to $595
Up to $1,820
Up to $2,415

According to the manufacturer, some or all of the costs of this AD
may be covered under warranty, thereby reducing the cost impact on
affected individuals. The FAA does not control warranty coverage for
affected individuals. As a result, the agency has included all known
costs in its 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.
The FAA is 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.
This AD is issued in accordance with authority delegated by the
Executive Director, Aircraft Certification Service, as authorized by
FAA Order 8000.51C. In accordance with that order, issuance of ADs is
normally a function of the Compliance and Airworthiness Division, but
during this transition period, the Executive Director has delegated the
authority to issue ADs applicable to transport category airplanes and
associated appliances to the Director of the System Oversight Division.

Regulatory Findings

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) Will not affect intrastate aviation in Alaska, and
(3) 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):