81 FR 66516 - Airworthiness Directives; Bombardier, Inc. Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 81, Issue 188 (September 28, 2016)

Page Range		66516-66518
FR Document		2016-22705

We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-400 series airplanes. This AD was prompted by a malfunctioning No. 2 engine intake heater with corrosion on the thermostats and the fuselage skin where the thermostats made contact with the aircraft fuselage skin. This AD requires a general visual inspection for corrosion of the thermostats' mounting surfaces and fuselage skin surface, corrective actions if necessary, and relocating the existing thermostats. We are issuing this AD to prevent corrosion within the thermostats that might cause the switch mechanism to seize in the open position and prevent the activation of the associated engine air intake heater. An inactive engine air intake heater could lead to an engine failure.

Federal Register, Volume 81 Issue 188 (Wednesday, September 28, 2016)

[Federal Register Volume 81, Number 188 (Wednesday, September 28, 2016)]
[Rules and Regulations]
[Pages 66516-66518]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-22705]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2016-6148; Directorate Identifier 2015-NM-154-AD; 
Amendment 39-18660; AD 2016-19-11]
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-8-400 series airplanes. This AD was prompted 
by a malfunctioning No. 2 engine intake heater with corrosion on the 
thermostats and the fuselage skin where the thermostats made contact 
with the aircraft fuselage skin. This AD requires a general visual 
inspection for corrosion of the thermostats' mounting surfaces and 
fuselage skin surface, corrective actions if necessary, and relocating 
the existing thermostats. We are issuing this AD to prevent corrosion 
within the thermostats that might cause the switch mechanism to seize 
in the open position and prevent the activation of the associated 
engine air intake heater. An inactive engine air intake heater could 
lead to an engine failure.

DATES: This AD is effective November 2, 2016.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of November 2, 
2016.

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: [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. It is also available on the 
Internet at http://www.regulations.gov by searching for and locating 
Docket No. FAA-2016-6148.

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-
6148; 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 AD, the regulatory evaluation, any comments received, and 
other information. The street address for the Docket Office (telephone 
800-647-5527) is Docket Management Facility, 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: Assata Dessaline, Aerospace Engineer, 
Avionics and Services Branch, ANE-172, FAA, New York Aircraft 
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, 
NY 11590; telephone 516-228-7301; fax 516-794-5531.

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-8-400 series airplanes. The NPRM published in the Federal 
Register on May 2, 2016 (81 FR 26176) (``the NPRM'').
    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2015-24, dated August 24, 2015 (referred to after this as the Mandatory 
Continuing Airworthiness Information, or ``the MCAI''), to correct an 
unsafe condition for certain Bombardier, Inc. Model DHC-8-400 series 
airplanes. The MCAI states:

    A malfunctioning Engine Air Intake Heater has been discovered 
with corrosion on the thermostats and the aeroplane skin where the 
thermostats are installed. The two thermostats are installed 
directly under the flight compartment floor along the aeroplane 
centre line where moisture accumulation and/or migration may occur, 
which can cause corrosion of the thermostats. Corrosion within the 
thermostats may seize the switch mechanism open, preventing the 
activation of the associated Engine Air Intake Heater. Failure of 
the Engine Air Intake Heater to activate may pose a safety risk to 
the aeroplane in icing conditions.
    Bombardier has issued Service Bulletin (SB) 84-30-10 to inspect, 
replace if required and relocate the thermostat assembly to rectify 
this problem. [An inactive engine air intake heater could lead to an 
engine failure.]

    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-
6148.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We received no comments on the NPRM or on the determination of 
the cost to the public.

Conclusion

    We reviewed the relevant data and determined that air safety and 
the public interest require adopting this AD 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 correcting 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, Inc. has issued Bombardier Service Bulletin 84-30-10, 
Revision E, dated October 10, 2014. The service information describes

[[Page 66517]]

procedures for a general visual inspection for corrosion of the 
thermostats' mounting surfaces and fuselage skin surface, corrective 
actions, and relocating the existing thermostats from a lower position 
on the aircraft skin at X 54.00 between stringers 31P and 32P (next to 
the centerline) to a higher position at X 54.00 between stringers 26P 
and 27P. 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 76 airplanes of U.S. registry.
    We estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
               Action                        Labor cost           Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
Modification........................  12 work-hours x $85 per             N/A           $1,020          $77,520
                                       hour = $1,020.
----------------------------------------------------------------------------------------------------------------

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 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

0
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]

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

2016-19-11 Bombardier, Inc.: Amendment 39-18660; Docket No. FAA-
2016-6148; Directorate Identifier 2015-NM-154-AD.

(a) Effective Date

    This AD is effective November 2, 2016.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc. Model DHC-8-400, -401, and -
402 airplanes, certificated in any category, serial numbers 4001 
through 4184 inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 30, Ice and rain 
protection.

(e) Reason

    This AD was prompted by a malfunctioning No. 2 engine intake 
heater with corrosion on the thermostats and the fuselage skin where 
the thermostats made contact with the aircraft fuselage skin. We are 
issuing this AD to prevent corrosion within the thermostats that may 
cause the switch mechanism to seize in the open position and prevent 
the activation of the associated engine air intake heater. An 
inactive engine air intake heater could lead to an engine failure.

(f) Compliance

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

(g) Inspection of the Thermostats and Replacement

    Within 2,000 flight hours or 12 months, whichever occurs first 
after the effective date of this AD, do a general visual inspection 
of the thermostats' exterior for any signs of corrosion, in 
accordance with the Accomplishment Instructions of Bombardier 
Service Bulletin 84-30-10, Revision E, dated October 10, 2014. If 
any thermostat is corroded, replace the thermostat before further 
flight, in accordance with the Accomplishment Instructions of 
Bombardier Service Bulletin 84-30-10, Revision E, dated October 10, 
2014.

(h) Inspection of the Fuselage Skin Surface and Corrective Action

    Within 2,000 flight hours or 12 months, whichever occurs first 
after the effective date of this AD, do a general visual inspection 
of the fuselage skin surface for skin corrosion, and modify the 
engine air intake heater thermostat installation, in accordance with 
the Accomplishment Instructions of Bombardier Service Bulletin 84-
30-10, Revision E, dated October 10, 2014.
    (1) If the skin corrosion is 0.001 inch deep or less, before 
further flight remove the corrosion and treat bare metal, in 
accordance with Accomplishment Instructions of Bombardier Service 
Bulletin 84-30-10, Revision E, dated October 10, 2014.
    (2) If the skin corrosion is greater than 0.001 inch deep, 
before further flight, repair using a method approved by the 
Manager, New York Aircraft Certification Office (ACO), ANE-170, 
Transport Airplane Directorate, FAA; or Transport Canada Civil 
Aviation (TCCA); or Bombardier, Inc.'s TCCA Design Approval 
Organization (DAO).

(i) Credit for Previous Actions

    This paragraph provides credit for actions required by 
paragraphs (g) and (h) of this AD, if those actions were performed 
before the effective date of this AD using the service information 
identified in paragraphs (i)(1) through (i)(5) of this AD.
    (1) Bombardier Service Bulletin 84-30-10, dated September 7, 
2007, provided that the thermostat location label is replaced, in 
accordance with the Accomplishment

[[Page 66518]]

Instructions of Bombardier Service Bulletin 84-30-10, Revision E, 
dated October 10, 2014, within the compliance times specified in 
paragraph (g) of this AD.
    (2) Bombardier Service Bulletin 84-30-10, Revision A, dated 
April 7, 2008.
    (3) Bombardier Service Bulletin 84-30-10, Revision B, dated 
January 20, 2010.
    (4) Bombardier Service Bulletin 84-30-10, Revision C, dated July 
14, 2011.
    (5) Bombardier Service Bulletin 84-30-10, Revision D, dated 
December 20, 2011.

(j) 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.
    (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.

(k) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian Airworthiness Directive CF-2015-24, dated August 24, 
2015, 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-2016-6148.
    (2) Service information identified in this AD that is not 
incorporated by reference is available at the addresses specified in 
paragraphs (l)(3) and (l)(4) of this AD.

(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.
    (i) Bombardier Service Bulletin 84-30-10, Revision E, dated 
October 10, 2014.
    (ii) Reserved.
    (3) 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.
    (4) 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.
    (5) 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 Renton, Washington, on September 12, 2016.
Michael Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-22705 Filed 9-27-16; 8:45 am]
 BILLING CODE 4910-13-P

66516 Federal Register / Vol. 81, No. 188 / Wednesday, September 28, 2016 / Rules and Regulations

available at the addresses specified in and fuselage skin surface, corrective part 39 by adding an AD that would
paragraphs (m)(3) and (m)(4) of this AD. actions if necessary, and relocating the apply to certain Bombardier, Inc. Model
(m) Material Incorporated by Reference existing thermostats. We are issuing this DHC–8–400 series airplanes. The NPRM
(1) The Director of the Federal Register AD to prevent corrosion within the published in the Federal Register on
approved the incorporation by reference thermostats that might cause the switch May 2, 2016 (81 FR 26176) (‘‘the
(IBR) of the service information listed in this mechanism to seize in the open position NPRM’’).
paragraph under 5 U.S.C. 552(a) and 1 CFR and prevent the activation of the Transport Canada Civil Aviation
part 51. associated engine air intake heater. An (TCCA), which is the aviation authority
(2) You must use this service information inactive engine air intake heater could for Canada, has issued Canadian
as applicable to do the actions required by lead to an engine failure. Airworthiness Directive CF–2015–24,
this AD, unless this AD specifies otherwise. dated August 24, 2015 (referred to after
(i) SAAB 2000 Service Bulletin 2000–54– DATES: This AD is effective November 2,
035, Revision 01, dated August 12, 2016. 2016. this as the Mandatory Continuing
(ii) Reserved. The Director of the Federal Register Airworthiness Information, or ‘‘the
(3) For service information identified in approved the incorporation by reference MCAI’’), to correct an unsafe condition
this AD, contact Saab AB, Saab Aeronautics, of a certain publication listed in this AD for certain Bombardier, Inc. Model
SE–581 88, Linköping, Sweden; telephone as of November 2, 2016. DHC–8–400 series airplanes. The MCAI
+46 13 18 5591; fax +46 13 18 4874; email ADDRESSES: For service information states:
saab2000.techsupport@saabgroup.com;
Internet http://www.saabgroup.com. identified in this final rule, contact A malfunctioning Engine Air Intake Heater
(4) You may view this service information Bombardier, Inc., Q-Series Technical has been discovered with corrosion on the
at the FAA, Transport Airplane Directorate, Help Desk, 123 Garratt Boulevard, thermostats and the aeroplane skin where the
1601 Lind Avenue SW., Renton, WA. For Toronto, Ontario M3K 1Y5, Canada; thermostats are installed. The two
information on the availability of this telephone: 416–375–4000; fax: 416– thermostats are installed directly under the
material at the FAA, call 425–227–1221. flight compartment floor along the aeroplane
375–4539; email: thd.qseries@ centre line where moisture accumulation
(5) You may view this service information aero.bombardier.com; Internet: http://
that is incorporated by reference at the and/or migration may occur, which can cause
www.bombardier.com. You may view corrosion of the thermostats. Corrosion
National Archives and Records
this referenced service information at within the thermostats may seize the switch
Administration (NARA). For information on
the availability of this material at NARA, call the FAA, Transport Airplane mechanism open, preventing the activation
202–741–6030, or go to: http:// Directorate, 1601 Lind Avenue SW., of the associated Engine Air Intake Heater.
www.archives.gov/federal-register/cfr/ibr- Renton, WA. For information on the Failure of the Engine Air Intake Heater to
locations.html. availability of this material at the FAA, activate may pose a safety risk to the
call 425–227–1221. It is also available aeroplane in icing conditions.
Issued in Renton, Washington, on Bombardier has issued Service Bulletin
September 14, 2016. on the Internet at http:// (SB) 84–30–10 to inspect, replace if required
Michael Kaszycki, www.regulations.gov by searching for and relocate the thermostat assembly to
and locating Docket No. FAA–2016– rectify this problem. [An inactive engine air
Acting Manager, Transport Airplane
Directorate, Aircraft Certification Service. 6148. intake heater could lead to an engine failure.]
[FR Doc. 2016–23081 Filed 9–27–16; 8:45 am] Examining the AD Docket You may examine the MCAI in the
BILLING CODE 4910–13–P You may examine the AD docket on AD docket on the Internet at http://
the Internet at http:// www.regulations.gov by searching for
www.regulations.gov by searching for and locating Docket No. FAA–2016–
DEPARTMENT OF TRANSPORTATION and locating Docket No. FAA–2016– 6148.
Federal Aviation Administration 6148; or in person at the Docket Comments
Management Facility between 9 a.m.
We gave the public the opportunity to
14 CFR Part 39 and 5 p.m., Monday through Friday,
participate in developing this AD. We
except Federal holidays. The AD docket
[Docket No. FAA–2016–6148; Directorate received no comments on the NPRM or
contains this AD, the regulatory
Identifier 2015–NM–154–AD; Amendment on the determination of the cost to the
evaluation, any comments received, and
39–18660; AD 2016–19–11] public.
other information. The street address for
RIN 2120–AA64 the Docket Office (telephone 800–647– Conclusion
5527) is Docket Management Facility, We reviewed the relevant data and
Airworthiness Directives; Bombardier, U.S. Department of Transportation, determined that air safety and the
Inc. Airplanes Docket Operations, M–30, West public interest require adopting this AD
AGENCY: Federal Aviation Building Ground Floor, Room W12–140, as proposed except for minor editorial
Administration (FAA), Department of 1200 New Jersey Avenue SE., changes. We have determined that these
Transportation (DOT). Washington, DC 20590. minor changes:
ACTION: Final rule. FOR FURTHER INFORMATION CONTACT: • Are consistent with the intent that
Assata Dessaline, Aerospace Engineer, was proposed in the NPRM for
SUMMARY: We are adopting a new Avionics and Services Branch, ANE– correcting the unsafe condition; and
airworthiness directive (AD) for certain 172, FAA, New York Aircraft • Do not add any additional burden
Bombardier, Inc. Model DHC–8–400 Certification Office (ACO), 1600 Stewart upon the public than was already
series airplanes. This AD was prompted Avenue, Suite 410, Westbury, NY proposed in the NPRM.
sradovich on DSK3GMQ082PROD with RULES

by a malfunctioning No. 2 engine intake 11590; telephone 516–228–7301; fax
heater with corrosion on the thermostats 516–794–5531. Related Service Information Under 1
and the fuselage skin where the CFR Part 51
SUPPLEMENTARY INFORMATION:
thermostats made contact with the Bombardier, Inc. has issued
aircraft fuselage skin. This AD requires Discussion Bombardier Service Bulletin 84–30–10,
a general visual inspection for corrosion We issued a notice of proposed Revision E, dated October 10, 2014. The
of the thermostats’ mounting surfaces rulemaking (NPRM) to amend 14 CFR service information describes

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Federal Register / Vol. 81, No. 188 / Wednesday, September 28, 2016 / Rules and Regulations 66517

procedures for a general visual higher position at X 54.00 between Costs of Compliance
inspection for corrosion of the stringers 26P and 27P. This service
thermostats’ mounting surfaces and information is reasonably available We estimate that this AD affects 76
fuselage skin surface, corrective actions, because the interested parties have airplanes of U.S. registry.
and relocating the existing thermostats access to it through their normal course We estimate the following costs to
from a lower position on the aircraft of business or by the means identified comply with this AD:
skin at X 54.00 between stringers 31P in the ADDRESSES section.
and 32P (next to the centerline) to a

ESTIMATED COSTS
Cost per Cost on U.S.
Action Labor cost Parts cost product operators

Modification ..................................................... 12 work-hours × $85 per hour = $1,020 ........ N/A $1,020 $77,520

Authority for This Rulemaking List of Subjects in 14 CFR Part 39 (f) Compliance
Air transportation, Aircraft, Aviation Comply with this AD within the
Title 49 of the United States Code compliance times specified, unless already
specifies the FAA’s authority to issue safety, Incorporation by reference,
done.
rules on aviation safety. Subtitle I, Safety.
(g) Inspection of the Thermostats and
section 106, describes the authority of Adoption of the Amendment Replacement
the FAA Administrator. ‘‘Subtitle VII:
Aviation Programs,’’ describes in more Accordingly, under the authority Within 2,000 flight hours or 12 months,
detail the scope of the Agency’s delegated to me by the Administrator, whichever occurs first after the effective date
the FAA amends 14 CFR part 39 as of this AD, do a general visual inspection of
authority. the thermostats’ exterior for any signs of
follows:
We are issuing this rulemaking under corrosion, in accordance with the
the authority described in ‘‘Subtitle VII, PART 39—AIRWORTHINESS Accomplishment Instructions of Bombardier
Part A, Subpart III, Section 44701: DIRECTIVES Service Bulletin 84–30–10, Revision E, dated
October 10, 2014. If any thermostat is
General requirements.’’ Under that corroded, replace the thermostat before
section, Congress charges the FAA with ■ 1. The authority citation for part 39
further flight, in accordance with the
promoting safe flight of civil aircraft in continues to read as follows: Accomplishment Instructions of Bombardier
air commerce by prescribing regulations Authority: 49 U.S.C. 106(g), 40113, 44701. Service Bulletin 84–30–10, Revision E, dated
for practices, methods, and procedures October 10, 2014.
the Administrator finds necessary for § 39.13 [Amended]
(h) Inspection of the Fuselage Skin Surface
safety in air commerce. This regulation ■ 2. The FAA amends § 39.13 by adding and Corrective Action
is within the scope of that authority the following new airworthiness Within 2,000 flight hours or 12 months,
because it addresses an unsafe condition directive (AD): whichever occurs first after the effective date
that is likely to exist or develop on 2016–19–11 Bombardier, Inc.: Amendment of this AD, do a general visual inspection of
products identified in this rulemaking 39–18660; Docket No. FAA–2016–6148; the fuselage skin surface for skin corrosion,
action. Directorate Identifier 2015–NM–154–AD. and modify the engine air intake heater
thermostat installation, in accordance with
Regulatory Findings (a) Effective Date the Accomplishment Instructions of
This AD is effective November 2, 2016. Bombardier Service Bulletin 84–30–10,
We determined that this AD will not Revision E, dated October 10, 2014.
have federalism implications under (b) Affected ADs (1) If the skin corrosion is 0.001 inch deep
Executive Order 13132. This AD will None. or less, before further flight remove the
not have a substantial direct effect on corrosion and treat bare metal, in accordance
the States, on the relationship between (c) Applicability with Accomplishment Instructions of
the national government and the States, This AD applies to Bombardier, Inc. Model Bombardier Service Bulletin 84–30–10,
or on the distribution of power and DHC–8–400, –401, and –402 airplanes, Revision E, dated October 10, 2014.
responsibilities among the various certificated in any category, serial numbers (2) If the skin corrosion is greater than
4001 through 4184 inclusive. 0.001 inch deep, before further flight, repair
levels of government. using a method approved by the Manager,
For the reasons discussed above, I (d) Subject New York Aircraft Certification Office (ACO),
certify that this AD: Air Transport Association (ATA) of ANE–170, Transport Airplane Directorate,
America Code 30, Ice and rain protection. FAA; or Transport Canada Civil Aviation
1. Is not a ‘‘significant regulatory (TCCA); or Bombardier, Inc.’s TCCA Design
action’’ under Executive Order 12866; (e) Reason
Approval Organization (DAO).
2. Is not a ‘‘significant rule’’ under the This AD was prompted by a
malfunctioning No. 2 engine intake heater (i) Credit for Previous Actions
DOT Regulatory Policies and Procedures
with corrosion on the thermostats and the This paragraph provides credit for actions
(44 FR 11034, February 26, 1979); fuselage skin where the thermostats made required by paragraphs (g) and (h) of this AD,
sradovich on DSK3GMQ082PROD with RULES

3. Will not affect intrastate aviation in contact with the aircraft fuselage skin. We are if those actions were performed before the
Alaska; and issuing this AD to prevent corrosion within effective date of this AD using the service
the thermostats that may cause the switch information identified in paragraphs (i)(1)
4. Will not have a significant mechanism to seize in the open position and through (i)(5) of this AD.
economic impact, positive or negative, prevent the activation of the associated (1) Bombardier Service Bulletin 84–30–10,
on a substantial number of small entities engine air intake heater. An inactive engine dated September 7, 2007, provided that the
under the criteria of the Regulatory air intake heater could lead to an engine thermostat location label is replaced, in
Flexibility Act. failure. accordance with the Accomplishment

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Document Created: 2016-09-28 01:08:12
Document Modified: 2016-09-28 01:08:12

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		Rules and Regulations
Action		Final rule.
Dates		This AD is effective November 2, 2016.
Contact		Assata Dessaline, Aerospace Engineer, Avionics and Services Branch, ANE-172, FAA, New York Aircraft Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7301; fax 516-794-5531.
FR Citation		81 FR 66516
RIN Number		2120-AA64
CFR Associated		Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

81 FR 66516 - Airworthiness Directives; Bombardier, Inc. Airplanes

DEPARTMENT OF TRANSPORTATIONFederal Aviation Administration

Federal Register Volume 81, Issue 188 (September 28, 2016)

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration