[Federal Register Volume 86, Number 64 (Tuesday, April 6, 2021)]
[Rules and Regulations]
[Pages 17708-17710]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-06961]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-1034; Project Identifier MCAI-2020-00951-T; 
Amendment 39-21483; AD 2021-07-06]
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 
certain Bombardier, Inc., Model CL-600-2B16 (601-3A, 601-3R, and 604 
Variants) airplanes. This AD was prompted by a determination that 
certain airplanes have outdated magnetic variation (MagVar) tables 
inside navigation systems. This AD requires revising the existing 
airplane flight manual (AFM) to update the Flight Management System 
(FMS) and Inertial Reference System (IRS) limitations. The FAA is 
issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective May 11, 2021.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of May 11, 2021.

ADDRESSES: For service information identified in this final rule, 
contact Bombardier, Inc., 200 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 2A3, Canada; North America toll-free telephone: 1-
866-538-1247 or direct-dial telephone: 1-514-855-2999; email: 
[email protected]; internet: https://www.bombardier.com. You 
may view this service information at the FAA, Airworthiness Products 
Section, Operational Safety 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 https://www.regulations.gov by searching for and locating Docket No. FAA-2020-
1034.

Examining the AD Docket

    You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2020-
1034; 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, 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: Steven Dzierzynski, Aerospace 
Engineer, Avionics and Electrical Systems Services Section, FAA, New 
York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; 
phone: 516-228-7367; fax: 516-794-5531; email: [email protected].

SUPPLEMENTARY INFORMATION:

Background

    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued TCCA AD CF-2020-24, dated July 10, 
2020 (also 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. You may examine the MCAI in the AD docket on 
the internet at https://www.regulations.gov by searching for and 
locating Docket No. FAA-2020-1034.
    The FAA 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-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. 
The NPRM published in the Federal Register on November 27, 2020 (85 FR 
75966). The NPRM was prompted by a determination that certain airplanes 
have outdated MagVar tables inside navigation systems. The NPRM 
proposed to require revising the existing AFM to update the FMS and IRS 
limitations. The FAA is issuing this AD to address outdated MagVar 
tables inside navigation systems, which can affect the performance of 
the navigation systems and result in the presentation of misleading 
magnetic heading references on the Primary Flight Displays (PFDs) and 
Multi-Function Displays (MFDs), positioning the airplane outside of the 
terrain and obstacle protection provided by instrument flight 
procedures and flight route designs (e.g., outdated MagVar tables can 
lead to significantly inaccurate heading, course, and bearing 
calculations). See the MCAI for additional background information.

Comments

    The FAA gave the public the opportunity to participate in 
developing this final rule. The following presents the comment received 
on the NPRM and the FAA's response.

Request To Update Calibration of the Navigational Aids

    Bombardier asked that the FAA update calibration of the required 
navigational aids at key ground stations, which would then fully 
address this potential unsafe condition. Bombardier stated that 
adherence to the proposed AD only addresses the outdated magnetic 
variation tables of affected airplane navigation systems; however, it 
does not guarantee a complete mitigation of the unsafe condition due to 
the larger issue of outdated calibration of the required navigational 
aids.
    We acknowledge the commenter's concern. However, ADs are legally 
enforceable rules that only address unsafe conditions on products, such 
as airplanes, and cannot apply to navigational aids at ground stations. 
This concern may be addressed by contacting the Navigation Program 
Manager at the FAA Air Traffic Organization, internet: https://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/contact/. We have not changed this AD in this 
regard.

Conclusion

    The FAA reviewed the relevant data, considered the comment 
received, and determined that air safety and the public interest 
require adopting this final rule as proposed, except for 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.

Related Service Information Under 1 CFR Part 51

    Bombardier has issued the following service information, which 
provides procedures for updating, among other systems, the FMS and IRS 
of the applicable AFM. These documents are distinct since they apply to 
different airplane configurations.

[[Page 17709]]

     Section 02-09, Navigation Systems Limitations, of Chapter 
2--LIMITATIONS, of the Bombardier Challenger CL-604 AFM, PSP 604-1, 
Revision 116, dated December 18, 2019.
     Section 02-09, Navigation Systems Limitations, of Chapter 
2--LIMITATIONS, Bombardier Challenger CL-605 AFM, PSP 605-1, Revision 
54, dated December 18, 2019.
    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 39 airplanes of U.S. 
registry. The FAA 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           $3,315
----------------------------------------------------------------------------------------------------------------

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.

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:

2021-07-06 Bombardier, Inc.: Amendment 39-21483; Docket No. FAA-
2020-1034; Project Identifier MCAI-2020-00951-T.

(a) Effective Date

    This airworthiness directive (AD) is effective May 11, 2021.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc., Model CL-600-2B16 (601-3A, 
601-3R, and 604 Variants), serial numbers 5301 through 5665 
inclusive, and 5701 through 5988 inclusive, certificated in any 
category.

(d) Subject

    Air Transport Association (ATA) of America Code 34, Navigation.

(e) Reason

    This AD was prompted by a determination that certain airplanes 
have outdated magnetic variation (MagVar) tables inside navigation 
systems. The FAA is issuing this AD to address outdated MagVar 
tables inside navigation systems, which can affect the performance 
of the navigation systems and result in the presentation of 
misleading magnetic heading references on the Primary Flight 
Displays (PFDs) and Multi-Function Displays (MFDs), positioning the 
airplane outside of the terrain and obstacle protection provided by 
instrument flight procedures and flight route designs (e.g., 
outdated MagVar tables can lead to significantly inaccurate heading, 
course, and bearing calculations).

(f) Compliance

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

(g) Airplane Flight Manual (AFM) Revision

    Within 60 days after the effective date of this AD: Revise the 
existing AFM to incorporate the information specified in Section 02-
09, Navigation Systems Limitations, of Chapter 2--LIMITATIONS, of 
the applicable Bombardier Challenger AFM specified in figure 1 to 
paragraph (g) of this AD.

[[Page 17710]]

[GRAPHIC] [TIFF OMITTED] TR06AP21.000

(h) 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 responsible Flight Standards 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 
responsible Flight Standards Office.
    (2) Contacting the Manufacturer: For any requirement in this AD 
to obtain instructions from a manufacturer, the instructions 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.

(i) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) TCCA AD CF-2020-24, dated July 10, 2020, for related 
information. This MCAI may be found in the AD docket on the internet 
at https://www.regulations.gov by searching for and locating Docket 
No. FAA-2020-1034.
    (2) For more information about this AD, contact Steven 
Dzierzynski, Aerospace Engineer, Avionics and Electrical Systems 
Services Section, FAA, New York ACO Branch, 1600 Stewart Avenue, 
Suite 410, Westbury, NY 11590; phone: 516-228-7367; fax: 516-794-
5531; email: [email protected].

(j) 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) Section 02-09, Navigation Systems Limitations, of Chapter 
2--LIMITATIONS, of the Bombardier Challenger CL-604 Airplane Flight 
Manual, PSP 604-1, Revision 116, dated December 18, 2019.
    (ii) Section 02-09, Navigation Systems Limitations, of Chapter 
2--LIMITATIONS, Bombardier Challenger CL-605 Airplane Flight Manual, 
PSP 605-1, Revision 54, dated December 18, 2019.
    (3) For service information identified in this AD, contact 
Bombardier, Inc., 200 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 2A3, Canada; North America toll-free telephone: 1-
866-538-1247 or direct-dial telephone: 1-514-855-2999; email: 
[email protected]; internet: https://www.bombardier.com.
    (4) You may view this service information at the FAA, 
Airworthiness Products Section, Operational Safety 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, email [email protected], or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued on March 19, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2021-06961 Filed 4-5-21; 8:45 am]
BILLING CODE 4910-13-P