Airworthiness Directives; Bombardier, Inc., Airplanes

[Federal Register Volume 84, Number 158 (Thursday, August 15, 2019)]
[Rules and Regulations]
[Pages 41605-41608]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2019-17506]


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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.

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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 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 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,

[[Page 41606]]

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 [email protected].

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:
    <bullet> Are consistent with the intent that was proposed in the 
NPRM for addressing the unsafe condition; and
    <bullet> 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.
    <bullet> Bombardier Service Bulletin 604-32-029, Revision 02, dated 
May 10, 2018.
    <bullet> Bombardier Service Bulletin 605-32-006, Revision 02, dated 
May 10, 2018.
    <bullet> 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
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
                          Labor cost                              Parts cost        product         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 $1,820.................  Up to $2,415.
 Up to $595.
----------------------------------------------------------------------------------------------------------------


[[Page 41607]]

    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

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):

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.
[GRAPHIC] [TIFF OMITTED] TR15AU19.003


[[Page 41608]]


[GRAPHIC] [TIFF OMITTED] TR15AU19.004

 (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 Avenue, Suite 410, 
Westbury, NY 11590; telephone 516-228-7323; fax 516-794-5531; email 
[email protected].
    (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 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 
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,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2019-17506 Filed 8-14-19; 8:45 am]
 BILLING CODE 4910-13-P

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