preamble attached >>>
ADs updated daily at www.Tdata.com
2022-12-01 BOMBARDIER, INC.: Amendment 39-22072; Docket No. FAA-2022-0085; Project Identifier MCAI-2021-00498-T.
(a) EFFECTIVE DATE

    This airworthiness directive (AD) is effective July 19, 2022.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This AD applies to Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11
    airplanes,  certificated in any category,  serial numbers 9002 through
    9879 inclusive and 9998.

(d) SUBJECT

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

(e) UNSAFE CONDITION

    This AD was prompted  by  reports  of  oxygen leaks caused by cracked,
    brittle  or  broken  oxygen hoses  that  were  found during  scheduled
    maintenance tests of  the airplane oxygen  system. The FAA  is issuing
    this AD  to address  a leak  in the  oxygen line,  which may result in
    failure to  provide oxygen  to passengers  and crew  and result  in an
    oxygen enriched atmosphere creating a fire risk on the airplane.

(f) COMPLIANCE

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

(g) INSPECTION AND REPLACEMENT

    Within 6 months after the effective date of this AD: Do an  inspection
    of the oxygen  hose assembly to  determine if any  hose having a  part
    number (P/N) in  the O2C20T1 series  is installed, in  accordance with
    the Accomplishment Instructions of the applicable service  information
    specified in  figure 1  to paragraph  (g) of  this AD.  If P/N O2C20T1
    series is installed,  or if any  test fails as  specified in paragraph
    (h) of this AD, before  further flight, replace all the  oxygen hoses,
    in accordance with the  Accomplishment Instructions of the  applicable
    service information specified in figure 1 to paragraph (g) of this AD.

               FIGURE 1 TO PARAGRAPH (G)  SERVICE INFORMATION            
    ______________________________________________________________________
    MODEL                 SERIAL NUMBERS                BOMBARDIER
                                                     SERVICE BULLETIN
    ______________________________________________________________________
    BD-700-1A10    9002 through 9005 inclusive,   700-35-015, Revision 01
    airplanes      9007 through 9014 inclusive,   dated February 12, 2021
                   9016 through 9020 inclusive,
                   9022 through 9026 inclusive,
                   9028 through 9033 inclusive,
                   9035, 9036, 9038 through 9051
                   inclusive, 9053 through 9055
                   inclusive, 9058 through 9080
                   inclusive, 9082 through 9106
                   inclusive, 9108 through 9122
                   inclusive, 9124 through 9129
                   inclusive, 9133, 9134, 9136
                   through 9171 inclusive, 9175,
                   9179 through 9286 inclusive,
                   9290 through 9312 inclusive,
                   9314 through 9354 inclusive,
                   9357, and 9360 through 9429
                   inclusive

    BD-700-1A10    9381, 9432 through 9491 in-    700-35-6005, Revision 01
    airplanes      clusive, 9496 through 9505     dated February 12, 2021
                   inclusive, 9507 through 9515
                   inclusive, 9518 through 9525
                   inclusive, 9527 through 9619
                   inclusive, 9622 through 9654
                   inclusive, 9657 through 9673
                   inclusive, 9677, 9680 through
                   9684 inclusive, 9686 through
                   9712 inclusive, 9716 through
                   9742 inclusive, 9744 through
                   9785 inclusive, 9788 through
                   9853 inclusive, 9856 through
                   9867 inclusive, 9870, 9873
                   through 9878 inclusive

    BD-700-1A10    9861 and 9872                  700-35-6501 Revision 01
    airplanes                                     dated February 12, 2021

    BD-700-1A11    9130 through 9209 inclusive,   700-1A11-35-014,
    airplanes      9212 through 9305 inclusive,   Revision 01, dated
                   9311 through 9359 inclusive,   February 12, 2021
                   9366 through 9430 inclusive,
                   and 9998

    BD-700-1A11    9386, 9401 through 9613 in-    700-35-5005, Revision 01
    airplanes      clusive, and 9618 through      dated February 12, 2021
                   9879 inclusive
    ______________________________________________________________________


(h) OPTIONAL INTERIM TESTING FOR CERTAIN AIRPLANES

    For airplanes  identified in figure 2 of paragraph (h) of this AD: The
    oxygen hose replacement,  if required by paragraph (g) of this AD, may
    be delayed if  all conditions specified  in paragraphs (h)(1)  through
    (3) of this AD are met.

(1) The oxygen system is tested at the applicable times specified in para-
    graph (h)(1)(i) or (ii) of this AD, in accordance with the Accomplish-
    ment Instructions  of the applicable service information  specified in
    figure 2 to paragraph (h) of this AD.

(i) If the Aircraft Completion Center Supplemental Type Certificate  (STC)
    for the passenger cabin interior was issued  within 5 years before the
    effective date of this AD: The oxygen system is tested within 6 months
    after the effective date of this AD,  and  thereafter at intervals not
    to exceed 30 months.

(ii) If the Aircraft Completion Center STC for the passenger cabin interi-
     or was issued 5 years or  more before the effective date of  this AD:
     The oxygen system is tested within 6 months  after the effective date
     of this AD, and thereafter at intervals not to exceed 15 months.

(2) All P/N O2C20T1 series hoses are replaced  before  further  flight  as
    specified in paragraph (g) of this AD after any hose fails any test.

(3) Except as specified by paragraph (h)(2)  of this AD,  all  P/N O2C20T1
    series hoses are replaced  within 10 years  after issuance of the Air-
    craft Completion Center STC for the passenger cabin interior as speci-
    fied in paragraph (g) of this AD  provided that all P/N O2C20T1 series
    hoses in the flight compartment and the third crew (left-hand side en-
    closure) are replaced within 6 months after the effective date of this
    AD.

     FIGURE 2 TO PARAGRAPH (H)  SERVICE INFORMATION FOR OPTIONAL INTERIM 
                                 TESTING                                  
    ______________________________________________________________________
    MODEL                 SERIAL NUMBERS                BOMBARDIER
                                                     SERVICE BULLETIN
    ______________________________________________________________________
    BD-700-1A10    9381, 9432 through 9491 in-     700-35-6005, Revision
    airplanes      clusive, 9496 through 9505      01, dated February 12,
                   inclusive, 9507 through 9515    2021
                   inclusive, 9518 through 9525
                   inclusive, 9527 through 9619
                   inclusive, 9622 through 9654
                   inclusive, 9657 through 9673
                   inclusive, 9677, 9680 through
                   9684 inclusive, 9686 through
                   9712 inclusive, 9716 through
                   9742 inclusive, 9744 through
                   9785 inclusive, 9788 through
                   9853, 9856 through 9867 in-
                   clusive, 9870, 9873 through
                   9878 inclusive.

    BD-700-1A10    9861 and 9872                   700-35-6501 Revision 01
    airplanes                                      dated February 12, 2021

    BD-700-1A11    9386, 9401 through 9613 in-     700-35-5005, Revision
    airplanes      clusive, and 9618 through       01, dated February 12,
                   9879 inclusive                  2021
    ______________________________________________________________________

(i) PARTS INSTALLATION PROHIBITION

    As of the effective date of this AD,  no person may install  an oxygen
    hose assembly having a P/N in the O2C20T1 series on any airplane.

(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 applicable service information specified in para-
    graphs (j)(1) through (5) of this AD.

(1) Bombardier Service Bulletin 700-1A11-35-014, dated September 28, 2020.

(2) Bombardier Service Bulletin 700-35-015, dated September 28, 2020.

(3) Bombardier Service Bulletin 700-35-5005, dated September 28, 2020.

(4) Bombardier Service Bulletin 700-35-6005, dated September 28, 2020.

(5) Bombardier Service Bulletin 700-35-6501, dated September 28, 2020.

(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
    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.

(l) RELATED INFORMATION

(1) Refer to Mandatory Continuing Airworthiness Information (MCAI) TCCA AD
    CF-2021-17, dated April 28, 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-
    0085.

(2) For more information about this AD,  contact Elizabeth Dowling,  Aero-
    space Engineer, Mechanical Systems and Administrative Services Section
    FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY
    11590; telephone 516-228-7300; fax 516-794-5531; email 9-avs-nyaco-cos
    @faa.gov.

(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 700-1A11-35-014, Revision 01, dated Febru-
    ary 12, 2021.

(ii) Bombardier Service Bulletin 700-35-015,  Revision 01,  dated February
     12, 2021.

(iii) Bombardier Service Bulletin 700-35-5005, Revision 01, dated February
      12, 2021.

(iv) Bombardier Service Bulletin 700-35-6005, Revision 01,  dated February
     12, 2021.

(v) Bombardier Service Bulletin 700-35-6501,  Revision 01,  dated February
    12, 2021.

(3) For service information identified in this AD, contact Bombardier Bus-
    iness Aircraft  Customer  Response  Center,  400 Cote-Vertu Road West,
    Dorval, Quebec H4S 1Y9, Canada;  telephone 514-855-2999; email ac.yul@
    aero.bombardier.com; internet https://www.bombardier.com.

(4) You may view this service information at the FAA,  Airworthiness Prod-
    ucts 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 refer-
    ence at the National Archives and Records Administration  (NARA).  For
    information on the availability of this material  at  NARA,  email fr.
    inspection@nara.gov,   or   go  to:  https://www.archives.gov/federal-
    register/cfr/ibr-locations.html.

Issued on May 25, 2022. Ross Landes, Deputy Director for Regulatory Opera-
tions, Compliance & Airworthiness Division, Aircraft Certification Service

FOR FURTHER INFORMATION CONTACT:  Elizabeth Dowling,  Aerospace  Engineer,
Mechanical Systems and Administrative Services Section,  FAA, New York ACO
Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-
228-7300; fax 516-794-5531; email 9-avs-nyaco-cos@faa.gov.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2022-0085; Project Identifier MCAI-2021-00498-T;
Amendment 39-22072; AD 2022-12-01]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).

ACTION: Final rule.

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

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes.
This AD was prompted by reports of oxygen leaks caused by cracked,
brittle, or broken oxygen hoses that were found during scheduled
maintenance tests of the airplane oxygen system. This AD requires an
inspection of the oxygen hose assembly to determine if an affected part
number is installed, and replacement of affected oxygen hoses. For
certain airplanes, this AD allows repetitive testing of the oxygen
system until affected hoses are replaced. This AD also prohibits installation
of an affected oxygen hose. The FAA is issuing this AD to address the
unsafe condition on these products.

DATES: This AD is effective July 19, 2022.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of July 19,
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 ac.yul@aero.bombardier.com; 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-2022-0085.

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-
0085; 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: Elizabeth Dowling, Aerospace Engineer,
Mechanical Systems and Administrative Services Section, FAA, New York
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7300; fax 516-794-5531; email 9-avs-nyaco-cos@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued TCCA AD CF-2021-17, dated April 28,
2021 (also referred to as the Mandatory Continuing Airworthiness
Information, or the MCAI), to correct an unsafe condition for certain
Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 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-2022-0085.
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 BD-700-1A10 and BD-700-1A11 airplanes. The NPRM published
in the Federal Register on February 3, 2022 (87 FR 6082). The NPRM was
prompted by reports of oxygen leaks caused by cracked, brittle, or
broken oxygen hoses that were found during scheduled maintenance tests
of the airplane oxygen system. The NPRM proposed to require an
inspection of the oxygen hose assembly to determine if an affected part
number is installed, and replacement of affected oxygen hoses. For
certain airplanes, the NPRM proposed to allow repetitive testing of the
oxygen system until affected hoses are replaced. The NPRM also proposed
to prohibit installation of an affected oxygen hose. The FAA is issuing
this AD to address a leak in the oxygen line, which may result in
failure to provide oxygen to passengers and crew and result in an
oxygen enriched atmosphere creating a fire risk on the airplane. 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 comments
received on the NPRM and the FAA's response to each comment. Air Line
Pilots Association, International (ALPA), an individual commenter, and
Bombardier indicated their support for the NPRM.

Request To Revise the Conditions for the Aircraft Completion Center
Supplemental Type Certificate (STC) Date


Bombardier requested that the FAA revise the conditions for the
Aircraft Completion Center STC date. Bombardier stated that the use of
the date when the Aircraft Completion Center STC was issued as
specified in paragraphs (h)(1)(i), (h)(1)(ii) and (h)(3) of the
proposed AD, will, in some cases, be inconsistent with the instructions
given in the service bulletin. Bombardier commented that in cases where
multiple configurations are approved by the Aircraft Completion Center
STC, the date that the STC was issued is not necessarily indicative of
the age of the hoses and should not be used. Bombardier stated that,
for example, STC ST03088NY, was issued April 20, 2012, but has been
used since then to approve many serial-number-specific configurations.
Bombardier suggested that the date used to determine whether
operators may perform interim inspections and delay hose replacement be
based on one of the following conditions:
Initial approval of the aircraft completion modification
was demonstrated by a serial number specific to the STC and the date
the STC was issued; or
Initial approval of the aircraft completion modification
was demonstrated on an STC that approves multiple configurations by the
initial approval date of the serial number specific configuration that
correlates to the date STC was added to the approved configuration
list.
Bombardier commented that the suggestion is consistent with the
service information provided in Bombardier Advisory Wire AW700-35-0794,
which includes an explanation of how to find the ``Aircraft Completion
STC date'' (expression used in the associated service information), for
cases where Bombardier is the STC holder.
The FAA disagrees with the commenter's implication that the ability
to delay hose replacement is determined by the date of the STC. The
date as given relative to an STC is only for the optional interim
testing and if all conditions are met; whether an operator may delay
replacement is determined solely based on serial numbers. If an STC is
installed with the referenced hoses, the serial numbers can be checked
on the hoses. The FAA has not changed this AD in this regard.

Conclusion

The FAA reviewed the relevant data, considered the comments
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.
Bombardier Service Bulletin 700-1A11-35-014, Revision 01,
dated February 12, 2021.
Bombardier Service Bulletin 700-35-015, Revision 01, dated
February 12, 2021.
Bombardier Service Bulletin 700-35-5005, Revision 01,
dated February 12, 2021.

Bombardier Service Bulletin 700-35-6005, Revision 01,
dated February 12, 2021.
Bombardier Service Bulletin 700-35-6501, Revision 01,
dated February 12, 2021.
This service information describes procedures for doing an
inspection of the oxygen hose assembly installations to determine if a
part number within the series O2C20T1 is installed, and replacing the
oxygen hose if necessary. For certain airplanes, the service
information specifies optional repetitive testing of the oxygen system
that would allow for delay of the replacement. These documents are
distinct since they apply to different airplane serial numbers.
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 will affect 409 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:

Estimated Costs for Required Actions

Labor cost
Parts cost
Cost per product
Cost on U.S. operators
Up to 36 work-hours x $85 per hour = Up to $3,060 $0 Up to $3,060 Up to $1,251,540

Estimated Costs for Optional Actions

Labor cost
Parts cost
Cost per product
Up to 25 work-hours x $85 per hour = Up to $2,125
Up to $125
Up to $2,250

The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some or all of the costs of
this AD may be covered under warranty, thereby reducing the cost impact
on affected operators.

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

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: