preamble attached >>>
ADs updated daily at www.Tdata.com
2018-20-11 BOMBARDIER, INC.: ( c o r r e c t i o n )
Amendment 39-19445; Docket No. FAA-2018-0586; Product Identifier 2017-NM-151-AD.

TDATA NOTE: The original FAA copy  has  an  incorrect  service information
            citation. The instances of Temporary Revision (TR) 54-042 were
            intended to be Temporary Revision (TR) 52-042.  No other  part
            of the AD has changed.

(a) EFFECTIVE DATE

    This AD is effective November 23, 2018.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This AD applies to Bombardier,  Inc., Model DHC-8-301, -311, and  -315
    airplanes, certificated  in any  category, serial  numbers 100 through
    672 inclusive.

(d) SUBJECT

    Air Transport Association (ATA) of America Code 52, Doors.

(e) REASON

    This AD was prompted by reports indicating that the forward right-hand
    type I emergency exit door could not be opened during  maintenance. An
    investigation determined that the exit  door handle was jammed due  to
    corroded center and lower shaft ball bearings. We are issuing this  AD
    to address corrosion of the  emergency exit door ball bearings,  which
    could result in the inability  to open the emergency exit  door during
    an emergency evacuation and consequently impede airplane egress.

(f) COMPLIANCE

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

(g) REVISION OF MAINTENANCE OR INSPECTION PROGRAM

    Within 60 days after November 23, 2018 (the effective date of this AD)
    Revise the maintenance or inspection program, as applicable, to incor-
    porate de Havilland Inc.  Dash 8 Series 300 Maintenance Task Card Task
    Number 5220/12  ("Servicing of Forward RH Emergency Exit Mechanisms"),
    dated March 15, 2017;  and  Temporary Revision 52-042, dated April 10,
    2018, to the DHC-8-300 Aircraft Maintenance Manual (AMM).  The initial
    compliance time  for  doing  the  task is at the time specified  in de
    Havilland Inc.  Dash 8 Series  300 Maintenance  Task Card  Task Number
    5220/12  ("Servicing of Forward RH Emergency Exit Mechanisms"),  dated
    March 15, 2017,  or within 60 days after November 23, 2018,  whichever
    occurs later.

(h) INSPECTION AND REPLACEMENT

    Within 5,000 flight hours or 36 months, whichever occurs first,  after
    November 23, 2018  (the effective date of this AD):  Do a detailed in-
    spection of all ball bearings  of  the forward right-hand type I emer-
    gency exit for corrosion, seal damage, and loss of lubricant;  replace
    bearings as applicable; and apply corrosion inhibiting compound  (CIC)
    in accordance  with the Accomplishment Instructions of Bombardier Ser-
    vice Bulletin 8-52-65, dated July 26, 2017. Do all applicable replace-
    ments before further flight.

(i) NO ALTERNATIVE ACTIONS OR INTERVALS

    After  the  maintenance  or inspection  program  has  been revised  as
    required by paragraph  (g) of this  AD, no alternative  actions (e.g.,
    inspections) or 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 (j)(1)  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
    corrective  actions   from  a   manufacturer,  the   action  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.

(k) RELATED INFORMATION

(1) Refer to Mandatory Continuing Airworthiness  Information (MCAI) Canad-
    ian Airworthiness  Directive CF-2017-30,  dated August  30, 2017,  for
    related information. This MCAI  may be found in  the AD docket on  the
    internet at http://www.regulations.gov  by searching for  and locating
    Docket No. FAA-2018-0586.

(2) For more information about this AD, contact Darren Gassetto, Aerospace
    Engineer, Mechanical Systems and Admin Services Section, FAA, New York
    ACO Branch,  1600 Stewart Avenue, Suite 410, Westbury, NY 11590; tele-
    phone 516-228-7323; fax 516-794-5531; email 9-avs-nyaco-cos@faa.gov.

(l) 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.

(3) The following service information was approved for IBR on November 23,
    2018 (83 FR 52754, October 18, 2018).

(i) Bombardier Service Bulletin 8-52-65, dated July 26, 2017.

(ii) de Havilland Inc. Dash 8 Series 300 Maintenance Task Card Task Number
     5220/12 ("Servicing of Forward RH Emergency Exit Mechanisms"),  dated
     March 15, 2017.

(iii) Temporary Revision (TR) 52-042, dated April 10, 2018,  to the DHC-8-
      300 Aircraft Maintenance Manual (AMM).

(4) For service information  identified  in this AD,  contact  Bombardier,
    Inc.  Q-Series  Technical Help Desk,  123 Garratt Boulevard,  Toronto,
    Ontario M3K 1Y5, Canada;  telephone 416-375-4000; fax 416-375-4539; e-
    mail thd.qseries@aero.bombardier.com;  internet http://www.bombardier.
    com.

(5) 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.

(6) 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, call 202
    -741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-
    locations.html.

Issued in Des Moines, Washington, on November 8, 2018.  Chris Spangenberg,
Acting  Director,  System   Oversight  Division,  Aircraft   Certification
Service.

FOR FURTHER INFORMATION CONTACT: Darren Gassetto, Aerospace Engineer, Air-
frame  and Propulsion  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.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


14 CFR Part 39

[Docket No. FAA-2018-0586; Product Identifier 2017-NM-151-AD; Amendment

39-19445; AD 2018-20-11]

RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc., Airplanes

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

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for certain

Bombardier, Inc., Model DHC-8-300 series airplanes. This AD was
prompted by reports indicating that a certain emergency exit door could
not be opened during maintenance. This AD requires a detailed
inspection of the ball bearings of an emergency exit, replacement of
bearings if necessary, application of corrosion inhibiting compound
(CIC), and revision of the maintenance or inspection program, as
applicable. We are issuing this AD to address the unsafe condition on
these products.

DATES: This AD is effective November 23, 2018.

The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of November 23,
2018.

ADDRESSES: For service information identified in this final rule,
contact Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt
Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416-375-4000;
fax 416-375-4539; email thd.qseries@aero.bombardier.com; internet
http://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. It is also available on the internet at http://www.regulations.gov
by searching for and locating Docket No. FAA-2018-0586.

Examining the AD Docket


You may examine the AD docket on the internet at http://www.regulations.gov
by searching for and locating Docket No. FAA-2018-0586; 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
regulatory evaluation, any comments received, and
other information. The address for Docket Operations (phone: 800-647-
5527) 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: Darren Gassetto, Aerospace Engineer,
Airframe and Propulsion 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:

Discussion


We 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 DHC-8-300 series airplanes. The NPRM published in the Federal
Register on July 6, 2018 (83 FR 31496). The NPRM was prompted by
reports indicating that a certain emergency exit door could not be
opened during maintenance. The NPRM proposed to require a detailed
inspection of the ball bearings of an emergency exit, replacement of
bearings if necessary, application of CIC, and revision of the
maintenance or inspection program, as applicable.

We are issuing this AD to address corrosion of the emergency exit
door ball bearings, which could result in the inability to open the
emergency exit door during an emergency evacuation and consequently
impede airplane egress.

Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian Airworthiness Directive CF-
2017-30, dated August 30, 2017 (referred to after this as the Mandatory
Continuing Airworthiness Information, or "the MCAI"), to correct an
unsafe condition for certain Bombardier, Inc., Model DHC-8-300 series
airplanes. The MCAI states:

An operator has reported the inability to open the Forward Right
Hand Type I emergency exit door with either the internal or external
handle during maintenance. Investigation has determined that the
handle was found to be jammed due to corroded center and lower shaft
ball bearings. Condensation has been found to be the root cause of
the Forward Right Hand Type I emergency exit door hardware
corrosion. Other Forward Right Hand Type I emergency exit door ball
bearings are also susceptible to corrosion. Inability to open the
Forward Right Hand Type I emergency exit door during an emergency
evacuation may impede aircraft egress.

This [Canadian] AD mandates the inspection for corrosion and
replacement, as required, of all Forward Right Hand Type I emergency
exit door ball bearings, and the application of corrosion inhibiting
compound (CIC), to ensure that the Forward Right Hand Type I
emergency exit door can be opened when required.

You may examine the MCAI in the AD docket on the internet at
http://www.regulations.gov by searching for and locating
Docket No. FAA-2018-0586.

Comments

We gave the public the opportunity to participate in developing
this final rule. We have considered the comment received. The Air Line
Pilots Association, International (ALPA) indicated its support for the
NPRM.

Conclusion

We reviewed the relevant data, considered the comment received, and
determined that air safety and the public interest require adopting
this final rule as proposed, except for minor editorial changes. We
have 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:

Service Bulletin 8-52-65, dated July 26, 2017, which
describes procedures for a detailed inspection of the forward right-
hand type I emergency exit door ball bearings for corrosion, seal
damage, and loss of lubricant; applying CIC; and replacing emergency
exit door ball bearings if necessary.

de Havilland Inc. Dash 8 Series 300 MaintenanceTask Card
Task Number 5220/12 ("Servicing of Forward RH Emergency Exit
Mechanisms"), dated March 15, 2017, which describes procedures for
servicing the forward right-hand emergency exit door mechanisms.

Temporary Revision (TR) 52-042, dated April 10, 2018, to
the DHC-8-300 Aircraft Maintenance Manual (AMM), which describes
procedures for servicing the type I emergency exit door mechanisms.

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

We estimate that this AD affects 16 airplanes of U.S. registry.

We estimate 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
$0
$255
$4,080

We have determined that revising the maintenance or inspection
program takes an average of 90 work-hours per operator, although we
recognize that this number may vary from operator to operator. In the
past, we have estimated that this action takes 1 work-hour per
airplane. Since operators incorporate maintenance or inspection program
changes for their affected fleet(s), we have determined that a per-
operator estimate is more accurate than a per-airplane estimate.

Therefore, we estimate the total cost per operator to be $7,650 (90
work-hours x $85 per work-hour).

We estimate the following costs to do any necessary on-condition
actions that would be required based on the results of any required
actions. We have no way of determining the number of aircraft that
might need these on-condition actions:

Estimated Costs of On-Condition Actions

LABOR COST
PARTS COST
COST PER PRODUCT
6 work-hours x $85 per hour = $510....
$586
$1,096

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.

We are 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.

This AD is issued in accordance with authority delegated by the
Executive Director, Aircraft Certification Service, as authorized by
FAA Order 8000.51C. In accordance with that order, issuance of ADs is
normally a function of the Compliance and Airworthiness Division, but
during this transition period, the Executive Director has delegated the
authority to issue ADs applicable to transport category airplanes and
associated appliances to the Director of the System Oversight Division.

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) Is not a "significant rule" under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979),

(3) Will not affect intrastate aviation in Alaska, and

(4) 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 (AD):