Airworthiness Directives; Bombardier, Inc. Airplanes, 26176-26178 [2016-10116]

Download as PDF 26176 Federal Register / Vol. 81, No. 84 / Monday, May 2, 2016 / Proposed Rules DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2016–6148; Directorate Identifier 2015–NM–154–AD] RIN 2120–AA64 Airworthiness Directives; Bombardier, Inc. Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC–8–400 series airplanes. This proposed 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 proposed AD would require 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 proposing 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. DATES: We must receive comments on this proposed AD by June 16, 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 https://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: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this NPRM, contact Bombardier, Inc., QSeries 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; mstockstill on DSK3G9T082PROD with PROPOSALS SUMMARY: VerDate Sep<11>2014 17:43 Apr 29, 2016 Jkt 238001 Internet: https://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 https:// 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 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 be available in the AD docket shortly after receipt. 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: 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–2016–6148; Directorate Identifier 2015–NM–154–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 https:// 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 AD 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: PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 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 https:// www.regulations.gov by searching for and locating Docket No. FAA–2016– 6148. 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 procedures for a general visual inspection for corrosion of the thermostats’ mounting surfaces and fuselage skin surface, corrective actions if necessary, 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. 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 76 airplanes of U.S. registry. We also estimate that it would take about 12 work-hours per product to comply with the basic requirements of E:\FR\FM\02MYP1.SGM 02MYP1 Federal Register / Vol. 81, No. 84 / Monday, May 2, 2016 / Proposed Rules 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 $77,520, or $1,020 per product. 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. 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. mstockstill on DSK3G9T082PROD with PROPOSALS 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: VerDate Sep<11>2014 17:43 Apr 29, 2016 Jkt 238001 § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): ■ Bombardier, Inc.: Docket No. FAA–2016– 6148; Directorate Identifier 2015–NM– 154–AD. (a) Comments Due Date We must receive comments by June 16, 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 PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 26177 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 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. This service information is not incorporated by reference in this AD. (1) Bombardier Service Bulletin 84–30–10, dated September 07, 2007, provided that the thermostat location label is replaced in accordance with the accomplishment instruction 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 07, 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: Assata Dessaline, Aerospace Engineer, Avionics and Services Branch, ANE 172, FAA, New York ACO, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone: 516–228– 7301; fax: 516–794–5531. Information may be emailed to: 9-ANM-116-AMOCREQUESTS@faa.gov. 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 Transport Canada Civil Aviation (TCCA); or Bombardier, Inc.’s TCCA Design Approval E:\FR\FM\02MYP1.SGM 02MYP1 26178 Federal Register / Vol. 81, No. 84 / Monday, May 2, 2016 / Proposed Rules Organization (DAO). If approved by the DAO, the approval must include the DAOauthorized signature. (k) Related Information (1) Refer to Mandatory Continuing Airworthiness Information (MCAI) Canadian AD CF–2015–24, dated August 24, 2015, 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–2016–6148. (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: thd.qseries@aero.bombardier.com; Internet: https://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 April 20, 2016. John P. Piccola, Jr., Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2016–10116 Filed 4–29–16; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION 14 CFR Part 71 Proposed Amendment of Class D Airspace and Revocation of Class E Airspace; Columbus, Ohio State University Airport, OH, and Amendment of Class E Airspace; Columbus, OH mstockstill on DSK3G9T082PROD with PROPOSALS In consideration of the foregoing, the NPRM for FR Doc. FAA–2015–1649, Airspace Docket No. 15–AGL–6, as published in the Federal Register of June 24, 2015 (80 FR 36265) (FR Doc. 2015–15461), is hereby withdrawn. BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM); withdrawal. This action withdraws the NPRM published in the Federal Register on June 24, 2015, proposing to amend Class D and Class E airspace and remove Class E airspace in the Columbus, OH, area. The FAA has determined that withdrawal of that NPRM is warranted as a second NPRM for the same airspace action was issued in July 2015. DATES: May 2, 2016. FOR FURTHER INFORMATION CONTACT: Jeffrey Claypool, Federal Aviation Administration, Operations Support Group, Central Service Center, 10101 Hillwood Parkway, Fort Worth, TX 76177; telephone (817) 222–5711. Jkt 238001 The Withdrawal [FR Doc. 2016–10011 Filed 4–29–16; 8:45 am] AGENCY: 17:43 Apr 29, 2016 Airspace, Incorporation by reference, Navigation (air). Issued in Fort Worth, TX, on April 19, 2016. Walter Tweedy, Acting Manager, Operations Support Group, ATO Central Service Center. [Docket No. FAA–2015–1649; Airspace Docket No. 15–AGL–6] VerDate Sep<11>2014 List of Subjects in 14 CFR Part 71 Authority: 49 U.S.C. 106(f), 106(g); 40103, 40113, 40120; E.O. 10854; 24 FR 9565, 3 CFR, 1959–1963 Comp., p. 389. Federal Aviation Administration SUMMARY: An NPRM was published in the Federal Register of June 24, 2015 (80 FR 36265), to amend Title 14 Code of Federal Regulations (14 CFR) part 71, by amending Class D and Class E airspace and removing Class E airspace in the Columbus, OH area. The proposed action was due to the decommissioning of the Dan Scott nondirectional beacon (NDB) and cancellation of the NDB approach at Ohio State University Airport, Columbus, OH. A second NPRM was published in the Federal Register of July 17, 2015 (80 FR 42434), proposing the same airspace actions and followed by a final rule published in the Federal Register of October 20, 2015 (80 FR 63426), acknowledging only the second NPRM. Therefore, the first NPRM issued is being withdrawn. SUPPLEMENTARY INFORMATION: Office of the Secretary 14 CFR Part 382 [Docket No. DOT–OST–2015–0246] RIN 2105–AE12 Nondiscrimination on the Basis of Disability in Air Travel: Negotiated Rulemaking Committee Membership and First Meeting Office of the Secretary, Department of Transportation. ACTION: Notice of negotiated rulemaking (Reg-Neg) committee membership and public meeting. AGENCY: The Department of Transportation (‘‘Department’’ or ‘‘DOT’’) announces the appointment of members to the Advisory Committee on SUMMARY: PO 00000 Frm 00006 Fmt 4702 Sfmt 4702 Accessible Air Transportation (ACCESS Advisory Committee). The ACCESS Advisory Committee was established to negotiate and develop a proposed rule concerning accommodations for air travelers with disabilities addressing inflight entertainment (IFE), accessible lavatory on new single-aisle aircraft, and service animals. Additionally, DOT announces that the first meeting of the ACCESS Advisory Committee will be held on May 17 and 18, 2016. The meeting is open to the public for its entirety. DATES: The first meeting of the ACCESS Advisory Committee will be held on May 17 and 18, 2016, from 9:00 a.m. to 5:00 p.m., Eastern Time. ADDRESSES: The meeting will be held at the Omni Shoreham Hotel, 2500 Calvert Street NW., Washington, DC 20001, 202–234–0700, in the Diplomat Room. Attendance is open to the public up to the room’s capacity of 150 attendees. Since space is limited, any member of the general public who plans to attend this meeting must notify the registration contact identified below no later than May 10, 2016. FOR FURTHER INFORMATION CONTACT: To register to attend the meeting, please contact Alyssa Battle (Abattle@ linkvisum.com; 703–442–4575 extension 127) or Kyle Illgenfritz (kilgenfritz@linkvisum.com; 703–442– 4575 extension 128). For other information, please contact Livaughn Chapman or Vinh Nguyen, Office of the Aviation Enforcement and Proceedings, U.S. Department of Transportation, by email at livaughn.chapman@dot.gov or vinh.nguyen@dot.gov or by telephone at 202–366–9342. SUPPLEMENTARY INFORMATION: I. Background On December 7, 2015, the Department published a notice in the Federal Register announcing its intent to consider a Reg-Neg on six issues—(1) inflight entertainment accessibility; (2) supplemental medical oxygen; (3) service animals; (4) accessible lavatories on single-aisle aircraft; (5) seating accommodations; and (6) carrier reporting of disability service requests.1 DOT also announced that we had hired a neutral convener, Professor Richard Parker, to speak with disability advocacy organizations, airlines, and others about the feasibility of conducting a Reg-Neg on these six issues. Mr. Parker conducted interviews with 46 different stakeholders representing these interests and prepared a convening report to DOT on 1 80 E:\FR\FM\02MYP1.SGM FR 75953 (Dec. 7, 2015). 02MYP1

Agencies

[Federal Register Volume 81, Number 84 (Monday, May 2, 2016)]
[Proposed Rules]
[Pages 26176-26178]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-10116]



[[Page 26176]]

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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]
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-8-400 series airplanes. This 
proposed 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 proposed 
AD would require 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 
proposing 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.

DATES: We must receive comments on this proposed AD by June 16, 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 https://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: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC, 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: thd.qseries@aero.bombardier.com; Internet: https://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 https://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 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 be available in the AD docket shortly after 
receipt.

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: 

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-2016-6148; 
Directorate Identifier 2015-NM-154-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 https://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 AD 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 https://www.regulations.gov by searching for and locating Docket No. FAA-2016-
6148.

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 
procedures for a general visual inspection for corrosion of the 
thermostats' mounting surfaces and fuselage skin surface, corrective 
actions if necessary, 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.

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 76 airplanes of U.S. 
registry.
    We also estimate that it would take about 12 work-hours per product 
to comply with the basic requirements of

[[Page 26177]]

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 $77,520, or $1,020 per product.

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.


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-2016-6148; Directorate Identifier 
2015-NM-154-AD.

(a) Comments Due Date

    We must receive comments by June 16, 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 
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 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. This 
service information is not incorporated by reference in this AD.
    (1) Bombardier Service Bulletin 84-30-10, dated September 07, 
2007, provided that the thermostat location label is replaced in 
accordance with the accomplishment instruction 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 07, 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: Assata 
Dessaline, Aerospace Engineer, Avionics and Services Branch, ANE 
172, FAA, New York ACO, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; telephone: 516-228-7301; fax: 516-794-5531. Information may 
be emailed to: 9-ANM-116-AMOC-REQUESTS@faa.gov. 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 Transport Canada 
Civil Aviation (TCCA); or Bombardier, Inc.'s TCCA Design Approval

[[Page 26178]]

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) Canadian AD CF-2015-24, dated August 24, 2015, 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-2016-6148.
    (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: thd.qseries@aero.bombardier.com; 
Internet: https://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 April 20, 2016.
John P. Piccola, Jr.,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-10116 Filed 4-29-16; 8:45 am]
 BILLING CODE 4910-13-P
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