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PROPOSED AD BOMBARDIER, INC.: Docket No. FAA-2020-0203; Product Identifier 2019-NM-142-AD.
(a) COMMENTS DUE DATE

    We must receive comments by May 7, 2020.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This AD applies to the Bombardier, Inc., airplanes identified in para-
    graphs (c)(1) through (3), certificated in any category, equipped with
    Scott (Avox/Zodiac) 5500 or 5600 series 11 cubic foot  portable oxygen
    bottle(s) with upper bracket part number (P/N) 36758-02,  P/N 36758-12
    or P/N H3-2091-1 installed at the neck of the bottle(s).

(1) Model CL-600-1A11 (600) airplanes,  serial  numbers  1004 through 1085
    inclusive.

(2) Model CL-600-2A12 (601) airplanes,  serial  numbers  3001 through 3066
    inclusive.

(3) Model CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes, serial
    numbers 5001 through 5194 inclusive, 5301 through 5665 inclusive, 5701
    through 5988 inclusive, and 6050 through 6119 inclusive.

(d) SUBJECT

    Air Transport Association (ATA) of America Code 35, Oxygen.

(e) REASON

    This AD  was prompted  by a  report that  fast and  easy access to the
    portable oxygen bottle may be prevented by the portable oxygen  bottle
    installation's upper bracket latch  assembly catching on the  pressure
    gauge  tube or  on the  pressure gauge  bezel of  the portable  oxygen
    bottle. The FAA is proposing this AD to address this condition, which,
    if not detected and corrected,  could prevent fast and easy  access to
    the portable oxygen bottle in an emergency situation.

(f) COMPLIANCE

    Comply with this AD within the compliance times specified,  unless al-
    ready done.

(g) PORTABLE OXYGEN BOTTLE CHECK

    For  airplanes with  a  serial  number listed  in Section  1.A of  the
    applicable Bombardier  service information  specified in  figure 1  to
    paragraphs (g), (h), and  (i) of this AD:  Within 60 months after  the
    effective  date  of  this  AD,  check  each  portable  oxygen   bottle
    installation to determine the manufacturer and P/N, in accordance with
    paragraph 2.B.  of the  Accomplishment Instructions  of the applicable
    Bombardier service  information specified  in figure  1 to  paragraphs
    (g), (h), and (i) of this AD.

    FIGURE 1 TO PARAGRAPHS (G), (H) AND (I)–SERVICE INFORMATION REFERENCES
    ______________________________________________________________________
         AIRPLANE MODEL                BOMBARDIER SERVICE INFORMATION
    ______________________________________________________________________
        Model CL-600-1A11          Bombardier Service Bulletin 600-0772,
                                   dated June 29, 2018

        Model CL-600-2A12          Bombardier Service Bulletin 601-0646,
                                   dated June 29, 2018

        Model CL-600-2B16          Bombardier Service Bulletin 601-0646,
                                   dated June 29, 2018

        Model CL-600-2B16          Bombardier Service Bulletin 604-35-006,
                                   dated June 29, 2018

        Model CL-600-2B16          Bombardier Service Bulletin 605-35-005,
                                   dated June 29, 2018

        Model CL-600-2B16          Bombardier Service Bulletin 650-35-001,
                                   dated June 29, 2018
    ______________________________________________________________________

(h) BRACKET MODIFICATIONS

    If, during the inspection specified  in paragraph (g) of this  AD, any
    portable  oxygen  bottle  is   found  to  be  manufactured   by  Scott
    (Avox/Zodiac) and is a 5500 or 5600 series 11 cubic foot bottle,  with
    upper bracket P/N  36758-02, 36758-12, or  H3-2091-1 installed at  the
    neck of  the bottle:  Modify the  portable oxygen  bottle brackets  in
    accordance with the paragraph 2.C. of the Accomplishment  Instructions
    of the applicable Bombardier service information specified in figure 1
    to paragraphs (g), (h), and (i) of this AD.

(i) PORTABLE OXYGEN BOTTLE CHECK AND CORRECTIVE 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 applicable Bombardier service information specified in figure 1
    to paragraphs (g), (h), and (i) of this AD: Within 60 months after the
    effective  date  of  this  AD,  check  each  portable  oxygen   bottle
    installation  to  determine  the  manufacturer  and  part  number  and
    accomplish  corrective  actions  in  accordance  with  the  procedures
    specified in paragraph (j)(2) of this AD.

(j) 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
    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's TCCA Design Approval  Organization (DAO). If approved  by
    the DAO, the approval must include the DAO-authorized signature.

(k) RELATED INFORMATION

(1) Refer   to   Mandatory  Continuing  Airworthiness  Information  (MCAI)
    Canadian AD CF-2019-26, dated  July 9, 2019, 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-2020-0203.

(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) For service information  identified  in this AD,  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 ac.yul@aero.bombardier.com; 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.

Issued  on  March 13,  2020.  Gaetano A.  Sciortino,  Deputy Director  for
Strategic  Initiatives,  Compliance  &  Airworthiness  Division,  Aircraft
Certification Service.

DATES: The FAA must receive comments on this proposed AD by May 7, 2020.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-0203; Product Identifier 2019-NM-142-AD]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: The FAA proposes to adopt 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 proposed AD was prompted by a report that fast and easy access to
the portable oxygen bottle may be prevented by the portable oxygen
bottle installation's upper bracket latch assembly catching on the
pressure gauge tube or on the pressure gauge bezel of the portable
oxygen bottle. This proposed AD would require a check to identify the
manufacturer and part number of the portable oxygen bottle
installation, and, if necessary, modification of the portable oxygen
bottle installation. The FAA is proposing this AD to address the unsafe
condition on these products.

DATES: The FAA must receive comments on this proposed AD by May 7, 2020.

ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:

Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the
instructions for submitting comments.

Fax: 202-493-2251.

Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.

Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.

For service information identified in this NPRM, 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 ac.yul@aero.bombardier.com;
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.

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-2020-0203;
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 NPRM, the regulatory evaluation, any comments received, and other
information. The street address for Docket Operations is listed above.
Comments will be available in the AD docket shortly after receipt.

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:

Comments Invited


The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under the ADDRESSES section. Include "Docket No. FAA-2020-0203;
Product Identifier 2019-NM-142-AD" at the beginning of your comments.
The FAA specifically invites comments on the overall regulatory,
economic, environmental, and energy aspects of this NPRM. The FAA will
consider all comments received by the closing date and may amend this
NPRM because of those comments.

The FAA will post all comments received, without change, to https://www.
regulations.gov, including any personal information you provide.
The FAA will also post a report summarizing each substantive verbal
contact received about this NPRM.

Discussion

Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian AD CF-2019-26, dated July 9,
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-600-1A11 (600), CL-600-2A12 (601),
and CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes.

This proposed AD was prompted by a report that fast and easy access
to the portable oxygen bottle may be prevented by the portable oxygen
bottle installation's upper bracket latch assembly catching on the
pressure gauge tube or on the pressure gauge bezel of the portable
oxygen bottle. The FAA is proposing this AD to address this condition,
which, if not detected and corrected, could prevent fast and easy
access to the portable oxygen bottle in an emergency situation. See the
MCAI for additional background information.

Related Service Information Under 1 CFR Part 51

Bombardier has issued the following service information:

Bombardier Service Bulletin 600-0772, dated June 29, 2018;

Bombardier Service Bulletin 601-0646, dated June 29, 2018;

Bombardier Service Bulletin 604-35-006, dated June 29, 2018;

Bombardier Service Bulletin 605-35-005, dated June 29, 2018;

Bombardier Service Bulletin 650-35-001, dated June 29, 2018.

This service information describes procedures for a check to
identify the manufacturer and part number of the portable oxygen bottle
installation, and, if necessary, modification of the portable oxygen
bottle installation. 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.

FAA's Determination

This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant
to a bilateral agreement with the State of Design Authority, the FAA
has been notified of the unsafe condition described in the MCAI and
service information referenced above. The FAA is proposing this AD
because the agency evaluated all the relevant information and
determined the unsafe condition described previously is likely to exist
or develop on other products of the same type design.

Proposed Requirements of This NPRM

This proposed AD would require accomplishing the actions specified
in the service information described previously, except as discussed
under "Differences Between this Proposed AD and the MCAI or Service
Information."

Differences Between This Proposed AD and the MCAI or Service
Information


The MCAI specifies that airplanes having serial numbers not listed
in the applicable service information must do certain actions in
accordance with the applicable service information. This proposed AD
would require airplanes having serial numbers not listed in the
applicable service information to do those actions in accordance with
the procedures specified in paragraph (j)(2) of this proposed AD.

Costs of Compliance

The FAA estimates that this proposed AD affects 188 airplanes of
U.S. registry. The FAA estimates the following costs to comply with
this proposed AD:

Estimated Costs for Required Actions

Labor cost Parts cost Cost per product Cost on U.S. operators
3 work-hours x $85 per hour = $255 per installation $1,530 per installation $1,785 per installation $335,580 per installation

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

The FAA determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 this proposed
regulation:

(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 Proposed Amendment

Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 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):