DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2019-0582; Product Identifier 2019-NM-034-AD; Amendment
39-19769; AD 2019-21-03]
Airworthiness Directives; Bombardier, Inc., Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
ACTION: Final rule.
SUMMARY: The FAA is adopting a new airworthiness directive (AD)
certain Bombardier, Inc., Model CL-600-1A11 (600), CL-600-2A12 (601),
and CL-600-2B16 (601-3A and 601-3R Variants) airplanes. This AD was
prompted by reports of the loss of all air data system information
provided to the flightcrew, which was caused by icing at high
altitudes. This AD requires revising the existing airplane flight
manual (AFM) to provide the flightcrew with procedures for ``Unreliable
Airspeed'' that stabilize the airplane's airspeed and attitude. The FAA
is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective December 18, 2019.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of December 18,
ADDRESSES: For service information identified in this final rule,
contact Bombardier, Inc., 200 Cote-Vertu Road West, Dorval,
Quebec H4S 2A3, Canada; North America toll-free telephone 1-866-
538-1247 or direct-dial telephone 1-514-855-2999; email
firstname.lastname@example.org; internet https://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 https://www.regulations.gov by searching
for and locating Docket No. FAA-2019-0582.
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-2019-
0582; 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
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: Thomas Niczky, Aerospace Engineer,
Avionics and Electrical Systems Services Section, FAA, New York ACO
Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone
516-228-7347; fax 516-794-5531; email email@example.com.
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian AD CF-2018-36, dated December
27, 2018 (``Canadian AD CF-2018-36'') (also referred to as the
Mandatory Continuing Airworthiness Information, or ``the MCAI''), to
correct an unsafe condition for certain Bombardier, Inc., Model CL-600-
1A11 (600), CL-600-2A12 (601), and CL-600-2B16 (601-3A and 601-3R
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-2019-0582.
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-600-1A11 (600), CL-600-2A12 (601), and CL-600-2B16 (601-
3A and 601-3R Variants) airplanes. The NPRM published in the Federal
Register on August 12, 2019 (84 FR 39778). The NPRM was prompted by
reports of the loss of all air data system information provided to the
flightcrew, which was caused by icing at high altitudes. The NPRM
proposed to require revising the existing AFM to provide the flightcrew
with procedures for ``Unreliable Airspeed'' that stabilize the
airplane's airspeed and attitude. The FAA is issuing this AD to address
the loss of all air data system information provided to the flightcrew.
If not addressed, this condition may adversely affect continued safe
flight and landing. See the MCAI for additional background information.
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.
Explanation of Change to Format of Paragraph Designation References
The FAA has revised the format the agency uses for referring to
paragraph designations throughout this AD. This change is necessary to
meet the Office of the Federal Register's drafting requirements. For
example, where the FAA previously referred to paragraphs (g)(1) and
(g)(2) of this AD, we now refer to paragraphs (g)(1) and (2) of this
AD. This change does not affect the requirements of this AD.
The FAA reviewed the relevant data 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
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 ``Unreliable Airspeed Procedure,''
specified in Unreliable Airspeed, in the Emergency Procedures section
of the applicable AFM.
Canadair Challenger CL-600-1A11 AFM, RAG-600-101, Issue 2,
Product Publication 600, Revision A111, dated August 31, 2018.
Canadair Challenger CL-600-1A11 (Winglets) AFM, RAG-600-
101, Issue 2, Product Support Publication (PSP) 600-1, Revision 103,
dated August 31, 2018.
Canadair Challenger CL-600-2A12 AFM, PSP 601-1A, Revision
120, dated August 31, 2018.
Canadair Challenger CL-600-2A12 AFM, PSP 601-1A-1,
Revision 79, dated August 31, 2018.
Canadair Challenger CL-600-2A12 AFM, PSP 601-1B, Revision
83, dated August 31, 2018.
Canadair Challenger CL-600-2A12 AFM, PSP 601-1B-1,
Revision 81, dated August 31, 2018.
Canadair Challenger CL-600-2B16 AFM, PSP 601A-1, Revision
103, dated August 31, 2018.
Canadair Challenger CL-600-2B16 AFM, PSP 601A-1-1,
Revision 92, dated August 31, 2018.
These documents are distinct since they apply to different airplane
models 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 206 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs for Required Actions
|1 work-hour x $85 per hour =
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
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.
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
(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
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