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2021-03-17 BOMBARDIER, INC.: Amendment 39-21420; Docket No. FAA-2020-0843; Product Identifier 2020-NM-073-AD.
(a) EFFECTIVE DATE

    This airworthiness directive (AD) is effective March 30, 2021.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This  AD applies  to Bombardier,  Inc., Model  BD-700-1A10  airplanes,
    certificated in any category,  serial numbers 9002, 9003,  9011, 9016,
    9020,  9022  through  9025 inclusive,  9029,  9031,  9032, 9036,  9039
    through 9044 inclusive, 9046 through 9058 inclusive, 9060 through 9065
    inclusive, 9067 through 9081  inclusive, 9083 through 9106  inclusive,
    9108 through 9122 inclusive, 9124 through 9126 inclusive, 9128,  9129,
    9133, 9134, 9136 through 9139 inclusive, 9141 through 9148  inclusive,
    9150, 9151, 9153, 9159, 9162, 9163, 9165, and 9169.

(d) SUBJECT

    Air Transport Association (ATA) of America Code 33, Lights.

(e) REASON

    This AD was prompted by a report of smoke and signs of an  overheating
    condition  from the  emergency light  battery (ELB)  due to  excessive
    corrosion surrounding the internal  lead acid batteries, which  caused
    an electrical  short circuit  that led  to the  smoke and  overheating
    condition. The  FAA is  issuing this  AD to  address such  conditions,
    which could cause fire onboard the airplane.

(f) COMPLIANCE

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

(g) INSPECTION AND CORRECTIVE ACTION

    Within 15 months after the effective date of this AD, inspect the  ELB
    to determine the last replacement  date or the manufacturing date,  as
    applicable; if during this inspection, any date is found to be 4 years
    or older,  replace the  ELB before  further flight.  Do the actions in
    accordance with the Accomplishment Instructions of Bombardier  Service
    Bulletin 700-33-024, dated  May 13, 2019.  For airplanes on  which the
    restoration task specified in paragraph (h) of this AD was done before
    the effective date  of this AD,  the requirements of  paragraph (g) of
    this AD are not required.

(h) MAINTENANCE OR INSPECTION PROGRAM REVISION

    Within  60  days after  the  effective date  of  this AD,  revise  the
    existing maintenance or inspection program, as applicable, to  include
    the  information  specified  in  Bombardier  BD-700  Supplemental Time
    Limits/Maintenance Checks (STLMC) Chapter 5 task number 33-51- 54-603,
    "Restoration of  the Emergency  Lighting Batteries  (XL245-B Emergency
    Battery System)," in the Bombardier BD-700 STLMC, as specified in  the
    applicable temporary revision identified in figure 1 to paragraph  (h)
    of this AD. The initial compliance time for doing task 33-51-54-603 is
    at the applicable  time specified in  paragraph (h)(1) or  (2) of this
    AD.  Repeat task  33-51-54-603 thereafter  at the  interval  specified
    within that task.

(1) If both ELBs  were replaced at the  time of compliance with  paragraph
    (g) of this AD: Within 48 months after the ELB replacement.

(2) If  neither  ELB, or  only  one  ELB, was  replaced   at  the time  of
    compliance with paragraph (g) of  this AD: Within 48 months  after the
    applicable date specified in paragraph (h)(2)(i) or (ii) of this AD.

(i) For each ELB, use the battery replacement date, if it is indicated.

(ii) For  each ELB,  use the  date of  manufacture, if  it does not have a
     battery replacement date indicated.

               FIGURE 1 TO PARAGRAPH (H)  SERVICE INFORMATION            
    ______________________________________________________________________
       AIRPLANE SERIAL NUMBER                TEMPORARY REVISION (TR)
    ______________________________________________________________________
    9002, 9003, 9011, 9016, 9020,              Bombardier Global
    9022 through 9025 inclusive,               Express BD-700
    9029, 9031, 9032, 9036, 9039               STLMC TR
    through 9044 inclusive, 9046               05-19091701, dated
    through 9058 inclusive, 9060               September 17, 2019
    through 9065 inclusive, 9067
    through 9081 inclusive, 9083
    through 9106 inclusive, 9108
    through 9122 inclusive, and 9124

    9125, 9126, 9128, 9129, 9133,              Bombardier Global
    9134, 9136 through 9139 inclusive,         Express BD-700
    9141 through 9148 inclusive, 9150,         STLMC TR
    9151, and 9153                             05-19091704, dated
                                               September 17, 2019

    9159, 9162, 9163, 9165, and 9169           Bombardier Global
                                               Express XRS BD-700
                                               STLMC TR
                                               05-19091705, dated
                                               September 17, 2019
    ______________________________________________________________________


(i) MISIDENTIFIED RESTORATION TASK

    The   following   temporary  revisions   misidentified   the  required
    restoration task as task "33-51-54-602."

(1) Bombardier  Global Express  XRS  BD-700 STLMC  Temporary  Revision 05-
    19032701, dated March 27, 2019.

(2) Bombardier Global Express BD-700 STLMC Temporary Revision 05-19040301,
    dated April 3, 2019.

(3) Bombardier Global Express BD-700 STLMC Temporary Revision 05-19040401,
    dated April 4, 2019.

(j) COMPLIANCE WITH  RESTORATION TASK  FOR AIRPLANES ON WHICH THE MISIDEN-
    TIFIED TASK WAS ACCOMPLISHED

    For airplanes on which the  restoration task specified as task "33-51-
    54-602" in the  applicable temporary revision identified in  paragraph
    (i) of this AD was done before the effective date of this AD:

(1) The actions specified in paragraph (g) of this AD are not required.

(2) The initial accomplishment of the task specified in paragraphs  (h)(1)
    and (2) of this AD is not required.

(3) Task  33-51-54-603 must be done within 48 months after task "33-51-54-
    602" was accomplished,  and thereafter at  the intervals specified  in
    task 33-51-54-603.

(k) NO ALTERNATIVE ACTIONS AND INTERVALS

    After the existing maintenance or inspection program has been  revised
    as required by paragraph (h) of this AD, no alternative actions (e.g.,
    inspections)  and  intervals  may  be  used  unless  the  actions  and
    intervals are approved as  an alternative method of  compliance (AMOC)
    in accordance  with the  procedures specified  in paragraph  (l)(1) of
    this AD.

(l) 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.

(m) RELATED INFORMATION

(1) Refer to Mandatory Continuing  Airworthiness Information (MCAI) Canad-
    ian AD CF-2020-07, dated March 17, 2020, 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-2020-0843.

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

(n) 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 700-33-024, dated May 13, 2019.

(ii) Bombardier Global Express BD-700 Supplemental Time Limits/Maintenance
     Checks (STLMC) Temporary  Revision (TR) 05-19091701,  dated September
     17, 2019.

(iii) Bombardier   Global  Express  BD-700  STLMC  TR  05-19091704,  dated
      September 17, 2019.

(iv) Bombardier Global Express XRS BD-700 STLMC TR 05-19091705, dated Sep-
     tember 17, 2019.

(3) For  service information  identified in  this AD,  contact Bombardier,
    Inc.,  400  Cote-Vertu  Road West,  Dorval,  Quebec  H4S 1Y9,  Canada;
    telephone       514-855-5000;       fax       514-855-7401;      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
    fedreg.legal@nara.gov,  or  go  to:   https://www.archives.gov/federal
    -register/cfr/ibr-locations.html.

Issued on January 29, 2021.

Gaetano  A.   Sciortino,  Deputy   Director  for   Strategic  Initiatives,
Compliance & Airworthiness Division, Aircraft Certification Service.

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 9-avs-nyaco-cos@faa.gov.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


14 CFR Part 39

[Docket No. FAA-2020-0843; Product Identifier 2020-NM-073-AD; Amendment
39-21420; AD 2021-03-17]
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 airplanes. This AD was
prompted by a report of smoke and signs of an overheating condition
from the emergency light battery (ELB) due to excessive corrosion
surrounding the internal lead acid batteries, which caused an
electrical short circuit that led to the smoke and overheating
condition. This AD requires an inspection to determine the last
replacement date of the ELB, and replacement if necessary. This AD also
requires the incorporation of a new maintenance task into the existing
maintenance or inspection program. The FAA is issuing this AD to
address the unsafe condition on these products.

DATES: This AD is effective March 30, 2021.

The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of March 30, 2021.

ADDRESSES: For service information identified in this final rule,
contact Bombardier, Inc., 400 Cote-Vertu Road West, Dorval,
Quebec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-
7401; 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-2020-0843.

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-
0843; 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:
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 9-avs-nyaco-cos@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion


Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian AD CF-2020-07, dated March
17, 2020 (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 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-2020-0843.

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 airplanes. The NPRM published in the Federal
Register on September 17, 2020 (85 FR 58010). The NPRM was prompted by
a report of smoke and signs of an overheating condition from the ELB
due to excessive corrosion surrounding the internal lead acid
batteries, which caused an electrical short circuit that led to the
smoke and overheating condition. The NPRM proposed to require an
inspection to determine the last replacement date of the ELB, and
replacement if necessary. The NPRM also proposed to require the
incorporation of a new maintenance task into the existing maintenance
or inspection program. The FAA is issuing this AD to address smoke and
an overheating condition of the ELB due to corrosion, which could cause
fire onboard 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 comment received
on the NPRM and the FAA's response to that comment.

Request To Update Bombardier Email Address


Bombardier requested that the FAA revise the NPRM to update the
email address for obtaining the specified service information from
"thd.crj@aero.bombardier.com" to "ac.yul@aero.bombardier.com."

The FAA agrees with the request and has revised this final rule
accordingly.

Clarifications of Compliance Times

The FAA has revised paragraph (g) of this AD to clarify when
replacement is required. This clarification explains that replacement
is required if, during the inspection required by paragraph (g) of this
AD, any last replacement date or manufacturing date is found to be 4
years or older.

The FAA has also revised paragraph (h)(2) of this AD to clarify
that the compliance time of within 48 months is related to the
applicable date specified in paragraph (h)(2)(i) or (ii) of this AD.
The proposed AD inadvertently stated that the compliance time was
"[w]ithin 48 months after the applicable compliance time specified in
paragraph (h)(2)(i) or (ii) of this AD," but paragraphs (h)(2)(i) and
(ii) of this AD specify dates, not compliance times.

Conclusion


The FAA reviewed the relevant data, considered the comment
received, and determined that air safety and the public interest
require adopting this final rule with the changes described previously
and 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.

The FAA also determined that this change will not increase the
economic burden on any operator or increase the scope of this final rule.

Related Service Information Under 1 CFR Part 51

Bombardier has issued Service Bulletin 700-33-024, dated May 13,
2019. This service information describes procedures for an inspection
to determine the last battery replacement date of the ELB, and
replacement if necessary.

Bombardier also issued the following service information.

Global Express BD-700 Supplemental Time Limits/Maintenance
Checks (STLMC) Temporary Revision (TR) 05-19091701, dated
September 17, 2019.

Global Express BD-700 STLMC TR 05-19091704, dated
September 17, 2019.

Global Express XRS BD-700 STLMC TR 05-19091705, dated
September 17, 2019.

These documents describe an amendment to the aircraft maintenance
schedule to include STLMC Chapter 5 task number 33-51-54-603,
"Restoration of the Emergency Lighting Batteries (XL245-B Emergency
Battery System)," and 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 affects 69 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
3 work-hours x $85 per hour = $255
$11,308
$11,563
$797,847

The FAA has determined that revising the existing maintenance or
inspection program takes an average of 90 work-hours per operator,
although the FAA recognizes that this number may vary from operator to
operator. Since operators incorporate maintenance or inspection program
changes for their affected fleet(s), the FAA has determined that a per-
operator estimate is more accurate than a per-airplane estimate.
Therefore, the FAA estimates the total cost per operator to be $7,650
(90 work-hours x $85 per work-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 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: