[Federal Register Volume 87, Number 80 (Tuesday, April 26, 2022)]
[Rules and Regulations]
[Pages 24410-24412]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-08824]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2022-0090; Project Identifier MCAI-2021-00399-T; 
Amendment 39-22021; AD 2022-09-01]
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 
certain Bombardier, Inc., Model CL-600-1A11 (600), CL-600-2A12 (601), 
and CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. This AD 
was prompted by a report of smoke in the aft cabin during a maintenance 
activity, which an investigation determined was caused by a faulty 
drain line ribbon heater. This AD requires a general visual inspection 
of all affected potable water-line ribbon heater installations and 
corrective actions and other specified actions. The FAA is issuing this 
AD to address the unsafe condition on these products.

DATES: This AD is effective May 31, 2022.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of May 31, 2022.

ADDRESSES: For service information identified in this final rule, 
contact Bombardier Business Aircraft Customer Response Center, 400 
C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec H4S 1Y9, Canada; 
telephone 514-855-2999; email [email protected]; internet 
http://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-2022-0090.

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-2022-
0090; 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 mandatory continuing airworthiness information 
(MCAI) 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: Thomas Niczky, Aerospace Engineer, 
Avionics and Electrical Systems Section, FAA, New York ACO Branch, 1600 
Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7347; 
fax 516-794-5531; email [email protected].

SUPPLEMENTARY INFORMATION: 

Discussion

    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued TCCA AD CF-2021-13, dated April 1, 
2021 (TCCA AD CF-2021-13) (also referred to as the MCAI), to correct an 
unsafe condition for Bombardier, Inc., Model CL-600-1A11 (600), CL-600-
2A12 (601), and CL-600-2B16 (601-3A, 601-3R, and 604 Variants) 
airplanes, equipped with any Cox & Co. 3043 or 3044 series (potable 
water-line) ribbon heater. 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-2022-0090.
    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, 601-3R, and 604 Variants) airplanes. The NPRM published in the 
Federal Register on February 8, 2022 (87 FR 7056). The NPRM was 
prompted by a report of smoke in the aft cabin during a maintenance 
activity, which an investigation determined was caused by a faulty 
drain line ribbon heater. The NPRM proposed to require a general visual 
inspection of all affected potable water-line ribbon heater 
installations and corrective actions and other specified actions. The 
FAA is issuing this AD to address faulty potable water-line ribbon 
heaters, which, if not corrected, could lead to an onboard fire. See 
the MCAI for additional background information.

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 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 Service Bulletin 601-0644, Revision 1, dated 
January 29, 2019; and Service Bulletin 604-30-007, Revision 1, dated 
January 29, 2019. This service information describes procedures for a 
general visual inspection of all affected potable water-line ribbon 
heater installations for any discrepancy and applicable corrective 
actions and other specified actions. Discrepancies include 
discoloration, blistering or cracking of insulation, signs of wear, or 
heat damage. Corrective actions include replacement of discrepant 
insulation and ribbon heaters. Other specified actions include 
identifying the potable water-line ribbon heater pigtail wire 
configuration, installing a fuse to the ribbon heater power lead, and 
testing the potable water-line heater system of each ribbon heater. 
These documents are distinct since they apply to different airplane 
models. 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 585 airplanes of U.S. 
registry. The FAA estimates the following costs to comply with this AD:

[[Page 24411]]



                                      Estimated Costs for Required Actions
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               Labor cost                   Parts cost         Cost per product         Cost on U.S. operators
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Up to 30 work-hours x $85 per hour = Up             $268  Up to $2,818..............  Up to $1,648,530.
 to $2,550.
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    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 FAA has no way of determining the number of 
aircraft that might need this on-condition action:

                 Estimated Costs of On-Condition Actions
------------------------------------------------------------------------
                                                             Cost per
            Labor cost                   Parts cost           product
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Up to 30 work-hours x $85 per hour  Up to $39,552 *.....         $42,102
 = $2,550.
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* The parts cost for a single potable water-line ribbon heater and
  associated material is $4,944. The estimated cost above assumes the
  worst case scenario of replacing all eight ribbon heaters on an
  airplane configured with eight ribbon heaters.

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.

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:

2022-09-01 Bombardier, Inc.: Amendment 39-22021; Docket No. FAA-
2022-0090; Project Identifier MCAI-2021-00399-T.

(a) Effective Date

    This airworthiness directive (AD) is effective May 31, 2022.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc., airplanes certificated in 
any category, identified in paragraphs (c)(1) through (3) of this AD 
and equipped with any Cox & Co. 3043 or 3044 series (potable water-
line) ribbon heater.
    (1) Model CL-600-1A11 (600) airplanes.
    (2) Model CL-600-2A12 (601) airplanes.
    (3) Model CL-600-2B16 (601-3A, 601-3R, and 604 Variants) 
airplanes.

(d) Subject

    Air Transport Association (ATA) of America Code 3070, Ice and 
Rain Protection; Code 3810, Potable Water System.

(e) Unsafe Condition

    This AD was prompted by a report of smoke in the aft cabin 
during a maintenance activity, which an investigation determined was 
caused by a faulty drain line ribbon heater. The FAA is issuing this 
AD to address faulty potable water-line ribbon heaters, which, if 
not corrected, could lead to an onboard fire.

(f) Compliance

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

(g) Inspection of Potable Water-line Ribbon Heater Installation and 
Insulation, Applicable Corrective Actions, and Other Specified Actions

    For airplanes with a serial number listed in Section 1.A of the 
applicable service information specified in figure 1 to paragraph 
(g) of this AD: Within 6 years after the effective date of this AD, 
do an inspection of the potable water-line ribbon heater 
installation and insulation to detect any discrepancy, and, before 
further flight, do all applicable corrective actions and other 
specified actions in accordance with the Accomplishment Instructions 
of the service information specified in figure 1 to paragraph (g) of 
this AD, as applicable.

[[Page 24412]]

[GRAPHIC] [TIFF OMITTED] TR26AP22.075

(h) Required Actions for Airplanes Not Listed in the Service 
Information

    For airplanes with a serial number that is not listed in section 
1.A of the service information specified in figure 1 to paragraph 
(g) of this AD, and for Bombardier Model CL-600-1A11 airplanes: 
Within 6 years after the effective date of this AD, do applicable 
actions including an inspection for discrepancies of the potable 
water-line ribbon heater and repair of any discrepant potable water-
line ribbon heaters using a method approved in accordance with the 
procedures specified in paragraph (i)(2) of this AD.

(i) 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.

(j) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Transport Canada AD CF-2021-13, dated April 1, 2021, 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-2022-0090.
    (2) For more information about this AD, contact Thomas Niczky, 
Aerospace Engineer, Avionics and Electrical Systems Section, FAA, 
New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; telephone 516-228-7347; fax 516-794-5531; email [email protected].

(k) 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 601-0644, Revision 1, dated 
January 29, 2019.
    (ii) Bombardier Service Bulletin 604-30-007, Revision 1, dated 
January 29, 2019.
    (3) For service information identified in this AD, contact 
Bombardier Business Aircraft Customer Response Center, 400 
C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec H4S 1Y9, Canada; 
telephone 514-855-2999; email [email protected]; internet 
http://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 April 11, 2022.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2022-08824 Filed 4-25-22; 8:45 am]
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