81 FR 21495 - Airworthiness Directives; Bombardier, Inc. Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 81, Issue 70 (April 12, 2016)

Page Range		21495-21497
FR Document		2016-08266

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-102, -103, and -106 airplanes, and Model DHC-8-200 and -300 series airplanes. This proposed AD was prompted by a report of heat damage found on a nacelle firewall after an unsuccessful engine ground start and several events of heat damage found on direct current starter/generator terminal block assemblies. This proposed AD would require an inspection for damage on the nacelle firewalls and the terminal block assemblies and to make sure the insulating sleeves are installed and have no damage, and corrective action if necessary. We are proposing this AD to prevent arcing between the firewall and terminal blocks that are missing insulating sleeves on the conductive bushings, which could, in combination with a fuel or hydraulic fluid leak, be an ignition source for a fire.

Federal Register, Volume 81 Issue 70 (Tuesday, April 12, 2016)

[Federal Register Volume 81, Number 70 (Tuesday, April 12, 2016)]
[Proposed Rules]
[Pages 21495-21497]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-08266]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2016-5044; Directorate Identifier 2014-NM-166-AD]
RIN 2120-AA64


Airworthiness Directives; Bombardier, Inc. Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain Bombardier, Inc. Model DHC-8-102, -103, and -106 airplanes, and 
Model DHC-8-200 and -300 series airplanes. This proposed AD was 
prompted by a report of heat damage found on a nacelle firewall after 
an unsuccessful engine ground start and several events of heat damage 
found on direct current starter/generator terminal block assemblies. 
This proposed AD would require an inspection for damage on the nacelle 
firewalls and the terminal block assemblies and to make sure the 
insulating sleeves are installed and have no damage, and corrective 
action if necessary. We are proposing this AD to prevent arcing between 
the firewall and terminal blocks that are missing insulating sleeves on 
the conductive bushings, which could, in combination with a fuel or 
hydraulic fluid leak, be an ignition source for a fire.

DATES: We must receive comments on this proposed AD by May 27, 2016.

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 http://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., Q-Series Technical Help Desk, 123 Garratt Boulevard, 
Toronto, Ontario M3K 1Y5, Canada; telephone 416-375-4000; fax 416-375-
4539; email [email protected]; Internet http://www.bombardier.com. You may view this referenced service information at 
the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, 
WA. For information on the availability of this material at the FAA, 
call 425-227-1221.

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-2016-
5044; or in person at the Docket Management Facility between 9 a.m. and 
5 p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this proposed AD, the regulatory evaluation, any comments 
received, and other information. The street address for the Docket 
Operations office (telephone 800-647-5527) is in the ADDRESSES section. 
Comments will

[[Page 21496]]

be available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Assata Dessaline, Aerospace Engineer, 
Avionics and Flight Test Branch, ANE-172, FAA, New York Aircraft 
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; telephone 516-228-7301; fax 516-794-5531.

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2016-5044; 
Directorate Identifier 2014-NM-166-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD based on those comments.
    We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this proposed AD.

Discussion

    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2014-03R1, dated July 24, 2014 (referred to after this as the Mandatory 
Continuing Airworthiness Information, or ``the MCAI''), to correct an 
unsafe condition for certain Bombardier, Inc. Model DHC-8-102, -103, 
and -106 airplanes, and Model DHC-8-200 and -300 series airplanes. The 
MCAI states:

    There has been one in-service report of heat damage on a nacelle 
firewall found after an unsuccessful engine ground start. There have 
also been several reports of heat damage found on Direct Current 
Starter/Generator terminal block assemblies, part number (P/N) 
82450075-001.
    The investigation determined that in all cases, the heat damage 
was caused by arcing between the firewall and terminal blocks with 
missing insulating sleeves on the conductive bushings. The 
insulating sleeves may have been inadvertently omitted during the 
incorporation of Modsum 8/1926, or during the installation of 
terminal blocks P/N 82450075-001.
    Arcing with the firewall becomes an ignition source, creating a 
potential fire hazard when combined with a fuel or hydraulic fluid 
leak.
    The original issue of this [Canadian] AD mandated the [detailed 
visual] inspection [for damage to the nacelle firewalls and to make 
sure the insulating sleeves are installed and have no damage] and 
rectification [corrective actions such as installing or replacing 
insulating sleeves, or replacing a terminal block], as required, of 
the nacelle firewall and terminal block assembly P/N 82450075-001 
installed with Modsum 8/1926.
    Revision 1 of this [Canadian] AD is issued to revise the 
Applicability to ensure that the terminal blocks have the insulating 
sleeves installed.

    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-2016-
5044.

Relevant Service Information Under 1 CFR Part 51

    Bombardier has issued Service Bulletin 8-24-92, Revision A, dated 
April 11, 2014. This service information describes procedures for an 
inspection for damage on the nacelle firewalls and the terminal block 
assemblies and to make sure the insulating sleeves are installed and 
have no damage, and corrective action if necessary. 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 and Requirements of This Proposed AD

    This product has been approved by the aviation authority of another 
country, and is approved for operation in the United States. Pursuant 
to our bilateral agreement with the State of Design Authority, we have 
been notified of the unsafe condition described in the MCAI and service 
information referenced above. We are proposing this AD because we 
evaluated all pertinent information and determined an unsafe condition 
exists and is likely to exist or develop on other products of the same 
type design.

Costs of Compliance

    We estimate that this proposed AD affects 75 airplanes of U.S. 
registry.
    We also estimate that it would take about 2 work-hours per product 
to comply with the basic requirements of this proposed AD. The average 
labor rate is $85 per work-hour. Based on these figures, we estimate 
the cost of this proposed AD on U.S. operators to be $12,750, or $170 
per product.
    In addition, we estimate that any necessary follow-on actions would 
take about 1 work-hour and require parts costing $551, for a cost of 
$636 per product. We have no way of determining the number of aircraft 
that might need these actions.

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.

Regulatory Findings

    We 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. 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.

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

0
1. The authority citation for part 39 continues to read as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701.

[[Page 21497]]

Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive (AD):

Bombardier, Inc.: Docket No. FAA-2016-5044; Directorate Identifier 
2014-NM-166-AD.

(a) Comments Due Date

    We must receive comments by May 27, 2016.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc. airplanes identified in 
paragraphs (c)(1), (c)(2), and (c)(3) of this AD, certificated in 
any category, serial numbers 003 through 672 inclusive, on which 
terminal block part number 82450075-001 is installed.
    (1) Model DHC-8-102, -103, and -106 airplanes.
    (2) Model DHC-8-201 and -202 airplanes.
    (3) Model DHC-8-301, -311, and -315 airplanes.

(d) Subject

    Air Transport Association (ATA) of America Code 24, Electrical 
Power.

(e) Reason

    This AD was prompted by a report of one event of heat damage 
found on a nacelle firewall after an unsuccessful engine ground 
start and several events of heat damage found on direct current 
starter/generator terminal block assemblies. We are issuing this AD 
to prevent arcing between the firewall and terminal blocks that are 
missing insulating sleeves on the conductive bushings, which could, 
in combination with a fuel or hydraulic fluid leak, be an ignition 
source for a fire.

(f) Compliance

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

(g) Inspection and Corrective Action

    Within 2,500 flight cycles or 14 months after the effective date 
of this AD, whichever occurs first, perform a detailed visual 
inspection of the right-hand side and left-hand side nacelle 
firewalls and terminal block assemblies, as defined in Bombardier 
Service Bulletin 8-24-92, Revision A, dated April 11, 2014, in 
accordance with the Accomplishment Instructions of Bombardier 
Service Bulletin 8-24-92, Revision A, dated April 11, 2014.
    (1) If the inspection finds no damage on the engine firewalls 
and the terminal blocks, and that the insulating sleeves are 
installed on both terminal blocks, no further action is required by 
this AD.
    (2) If the inspection finds that no insulating sleeves are 
installed, or the existing sleeves are damaged, and there is no 
damage to the nacelle firewall and terminal block, before further 
flight, install the replacement insulating sleeves, in accordance 
with the Accomplishment Instructions of Bombardier Service Bulletin 
8-24-92, Revision A, dated April 11, 2014.
    (3) If the inspection finds that no insulating sleeves are 
installed, or any existing sleeve is damaged, and there is no damage 
to the nacelle firewall, but there is damage to the terminal block, 
before further flight, replace the terminal block assembly (which 
includes insulating sleeves), in accordance with the Accomplishment 
Instructions of Bombardier Service Bulletin 8-24-92, Revision A, 
dated April 11, 2014.
    (4) If the inspection finds that no insulating sleeves are 
installed and there is damage to the nacelle firewall and the 
terminal block, repair the damage using a method approved by the 
Manager, New York Aircraft Certification Office (ACO), ANE-170, 
Engine and Propeller Directorate, FAA; or Transport Canada Civil 
Aviation (TCCA); or Bombardier, Inc.'s TCCA Design Approval 
Organization (DAO).

(h) 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 Bombardier Service Bulletin 8-24-92, dated 
September 25, 2013, which is not incorporated by reference in this 
AD.

(i) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York ACO, ANE-170, 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 ACO, send it to ATTN: Program 
Manager, Continuing Operational Safety, FAA, New York ACO, 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. The AMOC approval letter must 
specifically reference this AD.
    (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, 
ANE-170, Engine and Propeller Directorate, FAA; or TCCA; or 
Bombardier, Inc.'s TCCA DAO. If approved by the DAO, the approval 
must include the DAO-authorized signature.

(j) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian Airworthiness Directive CF-2014-03R1, dated July 24, 
2014, 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-2016-5044.
    (2) 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; email [email protected]; Internet 
http://www.bombardier.com. You may view this service information at 
the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., 
Renton, WA. For information on the availability of this material at 
the FAA, call 425-227-1221.

    Issued in Renton, Washington, on March 26, 2016.
Jeffrey E. Duven,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-08266 Filed 4-11-16; 8:45 am]
 BILLING CODE 4910-13-P

Federal Register / Vol. 81, No. 70 / Tuesday, April 12, 2016 / Proposed Rules 21495

under the criteria of the Regulatory AD. Send your proposal to: George Schwab, This proposed AD was prompted by a
Flexibility Act. Aviation Safety Engineer, Safety Management report of heat damage found on a
We prepared an economic evaluation Group, Rotorcraft Directorate, FAA, 10101 nacelle firewall after an unsuccessful
of the estimated costs to comply with Hillwood Pkwy, Fort Worth, TX 76177;
engine ground start and several events
telephone (817) 222–5110; email 9-ASW-
this proposed AD and placed it in the FTW-AMOC-Requests@faa.gov. of heat damage found on direct current
AD docket. (2) For operations conducted under a 14 starter/generator terminal block
List of Subjects in 14 CFR Part 39 CFR part 119 operating certificate or under assemblies. This proposed AD would
14 CFR part 91, subpart K, we suggest that require an inspection for damage on the
Air transportation, Aircraft, Aviation you notify your principal inspector, or nacelle firewalls and the terminal block
safety, Incorporation by reference, lacking a principal inspector, the manager of assemblies and to make sure the
Safety. the local flight standards district office or insulating sleeves are installed and have
certificate holding district office before
The Proposed Amendment no damage, and corrective action if
operating any aircraft complying with this
AD through an AMOC. necessary. We are proposing this AD to
Accordingly, under the authority
prevent arcing between the firewall and
delegated to me by the Administrator, (g) Additional Information terminal blocks that are missing
the FAA proposes to amend 14 CFR part (1) Eurocopter Emergency Alert Service insulating sleeves on the conductive
39 as follows: Bulletin No. 26.00.09, Revision 0, dated bushings, which could, in combination
September 15, 2011, which is not with a fuel or hydraulic fluid leak, be
PART 39—AIRWORTHINESS incorporated by reference, contains
DIRECTIVES an ignition source for a fire.
additional information about the subject of
this AD. For service information identified in DATES: We must receive comments on
■ 1. The authority citation for part 39 this AD, contact Airbus Helicopters, 2701 N. this proposed AD by May 27, 2016.
continues to read as follows: Forum Drive, Grand Prairie, TX 75052; ADDRESSES: You may send comments,
Authority: 49 U.S.C. 106(g), 40113, 44701. telephone (972) 641–0000 or (800) 232–0323; using the procedures found in 14 CFR
fax (972) 641–3775; or at http://
11.43 and 11.45, by any of the following
§ 39.13 [Amended] www.airbushelicopters.com/techpub. You
may review the referenced service methods:
■ 2. The FAA amends § 39.13 by adding • Federal eRulemaking Portal: Go to
information at the FAA, Office of the
the following new airworthiness Regional Counsel, Southwest Region, 10101 http://www.regulations.gov. Follow the
directive (AD): Hillwood Pkwy, Room 6N–321, Fort Worth, instructions for submitting comments.
Airbus Helicopters: Docket No. FAA–2015– TX 76177. • Fax: 202–493–2251.
5807; Directorate Identifier 2015–SW– (2) The subject of this AD is addressed in • Mail: U.S. Department of
063–AD. European Aviation Safety Agency (EASA) AD Transportation, Docket Operations, M–
No. 2015–0181, dated August 31, 2015. You 30, West Building Ground Floor, Room
(a) Applicability may view the EASA AD on the Internet at
This AD applies to Airbus Helicopters http://www.regulations.gov in the AD Docket. W12–140, 1200 New Jersey Avenue SE.,
Model AS355NP helicopters, certificated in Washington, DC 20590.
any category, with an Arrius 1A1 fire (h) Subject • Hand Delivery: Deliver to Mail
extinguishing system installed. Joint Aircraft Service Component (JASC) address above between 9 a.m. and 5
Code: 2620, Extinguishing System. p.m., Monday through Friday, except
(b) Unsafe Condition
Issued in Fort Worth, Texas, on April 4, Federal holidays.
This AD defines the unsafe condition as an For service information identified in
2016.
incorrectly connected fire extinguishing
discharge system. This condition could result Scott A. Horn, this NPRM, contact Bombardier, Inc., Q-
in the fire extinguishing system discharging Acting Manager, Rotorcraft Directorate, Series Technical Help Desk, 123 Garratt
to the wrong engine compartment, failure of Aircraft Certification Service. Boulevard, Toronto, Ontario M3K 1Y5,
the fire extinguishing system to contain a [FR Doc. 2016–08247 Filed 4–11–16; 8:45 am] Canada; telephone 416–375–4000; fax
fire, and loss of control of the helicopter.
BILLING CODE 4910–13–P
416–375–4539; email thd.qseries@
(c) Comments Due Date aero.bombardier.com; Internet http://
www.bombardier.com. You may view
We must receive comments by June 13,
DEPARTMENT OF TRANSPORTATION this referenced service information at
2016.
the FAA, Transport Airplane
(d) Compliance Federal Aviation Administration Directorate, 1601 Lind Avenue SW.,
You are responsible for performing each Renton, WA. For information on the
action required by this AD within the 14 CFR Part 39 availability of this material at the FAA,
specified compliance time unless it has call 425–227–1221.
already been accomplished prior to that time. [Docket No. FAA–2016–5044; Directorate
Identifier 2014–NM–166–AD] Examining the AD Docket
(e) Required Actions
RIN 2120–AA64 You may examine the AD docket on
Within 600 hours time-in-service or at the
next annual inspection, whichever occurs the Internet at http://
Airworthiness Directives; Bombardier, www.regulations.gov by searching for
first, remove and install the fire
Inc. Airplanes and locating Docket No. FAA–2016–
extinguishing system, and remove any
placards on the instrument panel if installed, AGENCY: Federal Aviation 5044; or in person at the Docket
in accordance with the Accomplishment Management Facility between 9 a.m.
jstallworth on DSK7TPTVN1PROD with PROPOSALS

Administration (FAA), DOT.
Instructions, paragraph 3.B. and 3.B.1 and 5 p.m., Monday through Friday,
ACTION: Notice of proposed rulemaking
through 3.B.2, of Airbus Helicopters Alert except Federal holidays. The AD docket
Service Bulletin No. AS355–26.00.10, (NPRM).
contains this proposed AD, the
Revision 0, dated July 2, 2015.
SUMMARY: We propose to adopt a new regulatory evaluation, any comments
(f) Alternative Methods of Compliance airworthiness directive (AD) for certain received, and other information. The
(AMOCs) Bombardier, Inc. Model DHC–8–102, street address for the Docket Operations
(1) The Manager, Safety Management –103, and –106 airplanes, and Model office (telephone 800–647–5527) is in
Group, FAA, may approve AMOCs for this DHC–8–200 and –300 series airplanes. the ADDRESSES section. Comments will

VerDate Sep<11>2014 15:12 Apr 11, 2016 Jkt 238001 PO 00000 Frm 00012 Fmt 4702 Sfmt 4702 E:\FR\FM\12APP1.SGM 12APP1

21496 Federal Register / Vol. 81, No. 70 / Tuesday, April 12, 2016 / Proposed Rules

be available in the AD docket shortly damage to the nacelle firewalls and to make Authority for This Rulemaking
after receipt. sure the insulating sleeves are installed and
have no damage] and rectification [corrective Title 49 of the United States Code
FOR FURTHER INFORMATION CONTACT: specifies the FAA’s authority to issue
actions such as installing or replacing
Assata Dessaline, Aerospace Engineer, insulating sleeves, or replacing a terminal rules on aviation safety. Subtitle I,
Avionics and Flight Test Branch, ANE– block], as required, of the nacelle firewall section 106, describes the authority of
172, FAA, New York Aircraft and terminal block assembly P/N 82450075– the FAA Administrator. ‘‘Subtitle VII:
Certification Office, 1600 Stewart 001 installed with Modsum 8/1926. Aviation Programs,’’ describes in more
Avenue, Suite 410, Westbury, NY Revision 1 of this [Canadian] AD is issued
to revise the Applicability to ensure that the
detail the scope of the Agency’s
11590; telephone 516–228–7301; fax authority.
terminal blocks have the insulating sleeves
516–794–5531. installed. We are issuing this rulemaking under
SUPPLEMENTARY INFORMATION: the authority described in ‘‘Subtitle VII,
You may examine the MCAI in the
Comments Invited Part A, Subpart III, Section 44701:
AD docket on the Internet at http://
General requirements.’’ Under that
We invite you to send any written www.regulations.gov by searching for
section, Congress charges the FAA with
relevant data, views, or arguments about and locating Docket No. FAA–2016–
promoting safe flight of civil aircraft in
this proposed AD. Send your comments 5044.
air commerce by prescribing regulations
to an address listed under the Relevant Service Information Under 1 for practices, methods, and procedures
ADDRESSES section. Include ‘‘Docket No. CFR Part 51 the Administrator finds necessary for
FAA–2016–5044; Directorate Identifier safety in air commerce. This regulation
2014–NM–166–AD’’ at the beginning of Bombardier has issued Service
Bulletin 8–24–92, Revision A, dated is within the scope of that authority
your comments. We specifically invite because it addresses an unsafe condition
comments on the overall regulatory, April 11, 2014. This service information
describes procedures for an inspection that is likely to exist or develop on
economic, environmental, and energy products identified in this rulemaking
aspects of this proposed AD. We will for damage on the nacelle firewalls and
the terminal block assemblies and to action.
consider all comments received by the
closing date and may amend this make sure the insulating sleeves are Regulatory Findings
proposed AD based on those comments. installed and have no damage, and
corrective action if necessary. This We determined that this proposed AD
We will post all comments we would not have federalism implications
receive, without change, to http:// service information is reasonably
available because the interested parties under Executive Order 13132. This
www.regulations.gov, including any proposed AD would not have a
personal information you provide. We have access to it through their normal
course of business or by the means substantial direct effect on the States, on
will also post a report summarizing each the relationship between the national
substantive verbal contact we receive identified in the ADDRESSES section.
Government and the States, or on the
about this proposed AD. FAA’s Determination and Requirements distribution of power and
Discussion of This Proposed AD responsibilities among the various
This product has been approved by levels of government.
Transport Canada Civil Aviation For the reasons discussed above, I
(TCCA), which is the aviation authority the aviation authority of another
country, and is approved for operation certify this proposed regulation:
for Canada, has issued Canadian 1. Is not a ‘‘significant regulatory
Airworthiness Directive CF–2014–03R1, in the United States. Pursuant to our
bilateral agreement with the State of action’’ under Executive Order 12866;
dated July 24, 2014 (referred to after this 2. Is not a ‘‘significant rule’’ under the
as the Mandatory Continuing Design Authority, we have been notified
of the unsafe condition described in the DOT Regulatory Policies and Procedures
Airworthiness Information, or ‘‘the (44 FR 11034, February 26, 1979);
MCAI’’), to correct an unsafe condition MCAI and service information
referenced above. We are proposing this 3. Will not affect intrastate aviation in
for certain Bombardier, Inc. Model Alaska; and
DHC–8–102, –103, and –106 airplanes, AD because we evaluated all pertinent
information and determined an unsafe 4. Will not have a significant
and Model DHC–8–200 and –300 series
condition exists and is likely to exist or economic impact, positive or negative,
airplanes. The MCAI states:
develop on other products of the same on a substantial number of small entities
There has been one in-service report of type design. under the criteria of the Regulatory
heat damage on a nacelle firewall found after Flexibility Act.
an unsuccessful engine ground start. There Costs of Compliance
have also been several reports of heat damage We estimate that this proposed AD List of Subjects in 14 CFR Part 39
found on Direct Current Starter/Generator
terminal block assemblies, part number (P/N)
affects 75 airplanes of U.S. registry. Air transportation, Aircraft, Aviation
82450075–001.
We also estimate that it would take safety, Incorporation by reference,
The investigation determined that in all about 2 work-hours per product to Safety.
cases, the heat damage was caused by arcing comply with the basic requirements of
this proposed AD. The average labor The Proposed Amendment
between the firewall and terminal blocks
with missing insulating sleeves on the rate is $85 per work-hour. Based on Accordingly, under the authority
conductive bushings. The insulating sleeves these figures, we estimate the cost of delegated to me by the Administrator,
may have been inadvertently omitted during this proposed AD on U.S. operators to the FAA proposes to amend 14 CFR part
jstallworth on DSK7TPTVN1PROD with PROPOSALS

the incorporation of Modsum 8/1926, or be $12,750, or $170 per product. 39 as follows:
during the installation of terminal blocks P/ In addition, we estimate that any
N 82450075–001. necessary follow-on actions would take PART 39—AIRWORTHINESS
Arcing with the firewall becomes an DIRECTIVES
ignition source, creating a potential fire
about 1 work-hour and require parts
hazard when combined with a fuel or costing $551, for a cost of $636 per
product. We have no way of ■ 1. The authority citation for part 39
hydraulic fluid leak.
The original issue of this [Canadian] AD determining the number of aircraft that continues to read as follows:
mandated the [detailed visual] inspection [for might need these actions. Authority: 49 U.S.C. 106(g), 40113, 44701.

VerDate Sep<11>2014 15:12 Apr 11, 2016 Jkt 238001 PO 00000 Frm 00013 Fmt 4702 Sfmt 4702 E:\FR\FM\12APP1.SGM 12APP1

Document Created: 2016-04-12 00:47:24
Document Modified: 2016-04-12 00:47:24

Category		Regulatory Information
Collection		Federal Register
sudoc Class		AE 2.7: GS 4.107: AE 2.106:
Publisher		Office of the Federal Register, National Archives and Records Administration
Section		Proposed Rules
Action		Notice of proposed rulemaking (NPRM).
Dates		We must receive comments on this proposed AD by May 27, 2016.
Contact		Assata Dessaline, Aerospace Engineer, Avionics and Flight Test Branch, ANE-172, FAA, New York Aircraft Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7301; fax 516-794-5531.
FR Citation		81 FR 21495
RIN Number		2120-AA64
CFR Associated		Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

81 FR 21495 - Airworthiness Directives; Bombardier, Inc. Airplanes

DEPARTMENT OF TRANSPORTATIONFederal Aviation Administration

Federal Register Volume 81, Issue 70 (April 12, 2016)

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration