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2022-14-07 BOMBARDIER, INC.: Amendment 39-22112; Docket No. FAA-2022-0470; Project Identifier MCAI-2021-01002-T.
(a) EFFECTIVE DATE

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

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This AD applies to all Bombardier, Inc., Model BD-700-1A10 and BD-700-
    1A11 airplanes, certificated in any category.

(d) SUBJECT

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

(e) UNSAFE CONDITION

    This AD was  prompted by reports  that some passenger  oxygen box dual
    manifold had their piston ejected during the mask deployment test  due
    to a non-conformity  in manufacturing. The  FAA is issuing  this AD to
    address a possible in-service piston ejection when used for  emergency
    descent, smoke,  or fire  that may  result in  a high  rate of  oxygen
    leakage,  which   could  prematurely   deplete  the   oxygen  for  all
    passengers.

(f) COMPLIANCE

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

(g) DEFINITION

    An affected part is a passenger oxygen box assembly having a dual man-
    ifold assembly  having part  number 100-009-39  and a  lot and  serial
    number specified in figure 1 to paragraph (g) of this AD.

                   FIGURE 1 TO PARAGRAPH (G) – AFFECTED PART
    ______________________________________________________________________
    LOT NUMBERS AFFECTED                  SERIAL NUMBERS AFFECTED
    ______________________________________________________________________
         3516-001                3516-001-01 through 3516-001-60 inclusive
         3538-002                3538-002-01 through 3538-002-60 inclusive
         3598-001                3598-001-01 through 3598-001-60 inclusive
         3568-001                3568-001-01 through 3568-001-60 inclusive
         3724-001                3724-001-01 through 3724-001-20 inclusive
         3724-002                3724-002-01 through 3724-002-12 inclusive
         3706-001                3706-001-01 through 3706-001-40 inclusive
    ______________________________________________________________________

(h) REQUIRED ACTIONS

    Within the applicable compliance time specified in paragraph (h)(1) or
    (2) of this AD: Inspect each passenger oxygen box dual manifold assem-
    bly to determine if it is an affected part,  as  defined  in paragraph
    (g) of this AD, and replace any affected part in accordance with para-
    graph 2.B.  of  the  Accomplishment  Instructions  of  the  applicable
    Bombardier service bulletin  specified in figure 2 to paragraph (h) of
    this AD. Replace any affected part before further flight.

(1) For airplanes  having  serial  numbers  9771, 9779, 9784, 9788 through
    9824 inclusive, 9853 through 9857 inclusive, and 9859 through 9876 in-
    clusive, within 4 months after the effective date of this AD.

(2) For airplane  having  serial numbers  9877 through 9879 inclusive, and
    60001 through 60042 inclusive,  within  30 months  after the effective
    date of this AD.

           FIGURE 2 TO PARAGRAPH (H) – APPLICABLE SERVICE BULLETINS
    ______________________________________________________________________
    AIRPLANE MODEL AND SERIAL NUMBERS                   APPLICABLE SERVICE
                                                             BULLETIN
    ______________________________________________________________________
    BD-700-1A10, serial numbers 9771, 9779, 9784,          700-35-6004,
    9788, 9789, 9791 through 9797 inclusive, 9799          Revision 05,
    through 9806 inclusive, 9808, 9809, 9811, 9812,        dated August
    9814 through 9818 inclusive, 9820 through 9824         27, 2021
    inclusive, 9853 through 9857 inclusive, 9859,
    9860, 9863 through 9871 inclusive, 9873 through
    9879 inclusive, and 60005 through 60042 inclusive

    BD-700-1A10, serial numbers 9861, 9872, and 60001      700-35-6502,
    through 60042 inclusive                                dated August
                                                           27, 2021

    BD-700-1A11 serial numbers 9790, 9798, 9807, 9810,     700-35-5004,
    9813, 9819, 9853 through 9857 inclusive, 9859          Revision 02,
    through 9862 inclusive, and 9868 through 9879          dated August
    inclusive                                              27, 2021

    BD-700-1A11, serial numbers 60007 through 60042        700-35-5502,
    inclusive                                              dated August
                                                           27, 2021
    ______________________________________________________________________

(i) PARTS INSTALLATION PROHIBITION

    As of the effective date of this AD, no person may install an affected
    part as defined in paragraph (g) of this AD, on any airplane.

(j) CREDIT FOR PREVIOUS ACTIONS

    This paragraph provides credit  for actions required by  paragraph (h)
    of this AD, if those actions were performed before the effective  date
    of  this  AD using  the  service information  specified  in paragraphs
    (j)(1) through (7) of this AD, as applicable.

(1) Bombardier Service Bulletin 700-35-5004, dated December 10, 2018.

(2) Bombardier Service Bulletin 700-35-5004,  Revision 01,  dated November
    29, 2019.

(3) Bombardier Service Bulletin 700-35-6004, dated December 10, 2018.

(4) Bombardier Service Bulletin 700-35-6004,  Revision 01,  dated  January
    16, 2019.

(5) Bombardier Service Bulletin 700-35-6004,  Revision 02,  dated April 5,
    2019.

(6) Bombardier Service Bulletin 700-35-6004,  Revision 03,  dated  May 31,
    2019.

(7) Bombardier Service Bulletin 700-35-6004,  Revision 04,  dated November
    29, 2019.

(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.  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-2021-30, dated September 7, 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-
    0470.

(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; email 9-avs-nyaco-cos@faa.gov.

(3) Service information identified in this AD  that is not incorporated by
    reference is available at the addresses specified in paragraphs (m)(4)
    and (5) of this AD.

(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 700-35-5004, Revision 02, dated August 27,
    2021.

(ii) Bombardier Service Bulletin 700-35-5502, dated August 27, 2021.

(iii) Bombardier Service Bulletin 700-35-6004,  Revision 05,  dated August
      27, 2021.

(iv) Bombardier Service Bulletin 700-35-6502, dated August 27, 2021.

(3) For service information identified in this AD, contact Bombardier Bus-
    iness Aircraft  Customer  Response  Center,  400 Côte-Vertu Road West,
    Dorval, Québec 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 June 27, 2022.  Christina Underwood, Acting Director, 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; email 9-avs-nyaco-cos@faa.gov.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2022-0470; Project Identifier MCAI-2021-01002-T;
Amendment 39-22112; AD 2022-14-07]
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 all
Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes. This AD
was prompted by reports that some oxygen box assemblies had their
piston ejected during the mask deployment test. This AD requires a one-
time inspection of each passenger oxygen box dual manifold assembly to
find and replace affected parts. This AD also prohibits installing
affected parts. The FAA is issuing this AD to address the unsafe
condition on these products.

DATES: This AD is effective August 19, 2022.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of August 19,
2022.

ADDRESSES: For service information identified in this final rule,
contact Bombardier Business 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. 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-2022-0470.

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-
0470; 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; email 9-avs-nyaco-cos@faa.gov.

SUPPLEMENTARY INFORMATION:

Background

Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued TCCA AD CF-2021-30, dated September 7,
2021 (TCCA AD CF-2021-30) (also referred to after this as the Mandatory
Continuing Airworthiness Information, or the MCAI), to correct an
unsafe condition for all Bombardier, Inc., Model BD-700-1A10 and BD-
700-1A11 airplanes. You may examine the MCAI in the AD docket at
https://www.regulations.gov by searching for and locating Docket No.
FAA-2022-0470.
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to all Bombardier, Inc.,
Model BD-700-1A10 and BD-700-1A11 airplanes. The NPRM published in the
Federal Register on April 26, 2022 (87 FR 24476). The NPRM was prompted
by reports that some oxygen box assemblies had their piston ejected
during the mask deployment test. The NPRM proposed to require a one-
time inspection of each passenger oxygen box dual manifold assembly to
find and replace affected parts. The NPRM also proposed to prohibit
installing affected parts. The FAA is issuing this AD to address a
possible in-service piston ejection when used for emergency descent,
smoke, or fire that may result in a high rate of oxygen leakage, which
could prematurely deplete the oxygen for all passengers. See the MCAI
for additional background information.

Discussion of Final Airworthiness Directive

Comments

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
requires adopting this AD as proposed. Except for minor editorial
changes, this AD is adopted as proposed in the NPRM. None of the
changes will increase the economic burden on any operator. Accordingly,
the FAA is issuing this AD to address the unsafe condition on these
products.

Related Service Information Under 1 CFR Part 51

Bombardier, Inc., has issued the following service information.
Service Bulletin 700-35-5004, Revision 02, dated August
27, 2021.
Service Bulletin 700-35-5502, dated August 27, 2021.
Service Bulletin 700-35-6004, Revision 05, dated August
27, 2021.
Service Bulletin 700-35-6502, dated August 27, 2021.
This service information describes procedures for inspecting each
passenger oxygen box dual manifold assembly to find affected parts, and
replacing affected parts. These documents are distinct because they
apply to different airplane 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 308 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
1 work-hour x $85 per hour = $85
$0
$85
$26,180

The FAA estimates the following costs to do any necessary on-
condition actions 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

Labor cost
Parts cost
Cost per product
Up to 34 work-hours x $85 per hour = $2,890
Up to $1,700
Up to $4,590

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.

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: