Airworthiness Directives; Bombardier, Inc., Airplanes, 32496-32498 [2017-14591]

Download as PDF 32496 Federal Register / Vol. 82, No. 134 / Friday, July 14, 2017 / Proposed Rules using Geven SB No. D103–25–004, Revision 4, dated March 15, 2016, and (2) For all Geven Type D1–02 and D1–03 (also known as ‘‘Lightweight Classic’’ and ‘‘Lightweight Prestige’’) aft facing seats, P/N D1–02–( )( )( )–( )( )( ), and P/N D1–03– ( )( )( )–( )( )( ), within 6 months after the effective date of this AD, torque check the seat belt attachment assemblies on the aisle side, central, and fuselage side spreaders to 71 in-lbs using Geven SB No. D103–25–004, Revision 4, dated March 15, 2016, and (3) Within 6 months after the effective date of this AD, verify that the safety belt attachment is free to rotate. If it is not free to rotate, replace the bushing in accordance with paragraph 3.3.1 of Geven SB No. D103– 25–004, Revision 4, dated March 15, 2016, or (4) Within 6 months after the effective date of this AD, block each affected seat to prevent use of each affected seat until paragraphs (f)(1), (2), and (3) of this AD are accomplished. (g) Credit for Previous Actions You may take credit for the inspections, torque verifications, and modifications that are required by paragraphs (f)(1), (2), and (3) of this AD if you performed those actions before the effective date of this AD using Geven SB No. D103–25–004, Revision 4, dated March 15, 2016. (h) Alternative Methods of Compliance (AMOCs) The Manager, Boston Aircraft Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. mstockstill on DSK30JT082PROD with PROPOSALS (i) Related Information (1) For more information about this AD, contact Neil Doh, Aerospace Engineer, Boston Aircraft Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781– 238–7757; fax: 781–238–7199; email: neil.doh@faa.gov. (2) Refer to MCAI EASA AD 2014–0187, dated August 20, 2014, for more information. You may examine the MCAI in the AD docket on the Internet at http:// www.regulations.gov by searching for and locating it in Docket No. FAA–2017–0504. (3) Geven SB No. D103–25–004, Revision 4, dated March 15, 2016 can be obtained from Geven Technical Assistance Department, using the contact information in paragraph (i)(4) of this proposed AD. (4) For service information identified in this proposed AD, contact Geven Technical Assistance Department, Via Boscofangone, Zona Industriale Nola-Marigliano, 80035 Nola (NA), Italy; phone: +39 081 31 21 396; fax: +39 081 31 21 321; email: Technical.assistance@geven.com. (5) You may view this service information at the FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA. For information on the availability of this material at the FAA, call 781–238–7125. VerDate Sep<11>2014 17:18 Jul 13, 2017 Jkt 241001 Issued in Burlington, Massachusetts, on July 6, 2017. Robert J. Ganley, Acting Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2017–14546 Filed 7–13–17; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2015–8434; Directorate Identifier 2015–NM–082–AD] RIN 2120–AA64 Airworthiness Directives; Bombardier, Inc., Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Supplemental notice of proposed rulemaking (SNPRM); reopening of comment period. AGENCY: We are revising an earlier proposal for certain Bombardier, Inc., Model DHC–8–401 and –402 airplanes. This action revises the notice of proposed rulemaking (NPRM) by adding certain airplanes to the applicability and adding specified actions. We are proposing this airworthiness directive (AD) to address the unsafe condition on these products. Since these changes increase the scope of the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes. DATES: The comment period for the NPRM published in the Federal Register on January 13, 2016 (81 FR 1586), is reopened. We must receive comments on this SNPRM by August 28, 2017. 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: 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 proposed AD, contact SUMMARY: PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416–375–4000; fax 416–375– 4539; email thd.qseries@ aero.bombardier.com; Internet http:// www.bombardier.com. You may view this 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–2015– 8434; 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 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: Cesar Gomez, Aerospace Engineer, Airframe and Mechanical Systems Branch, ANE–171, FAA, New York Aircraft Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516–228–7318; fax 516–794–5531. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments about this proposal. Send your comments to an address listed under the ADDRESSES section. Include ‘‘Docket No. FAA– 2015–8434; Directorate Identifier 2015– NM–082–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 We issued an NPRM to amend 14 CFR part 39 by adding an AD that would apply to certain Bombardier, Inc. Model DHC–8–401 and –402 airplanes. The E:\FR\FM\14JYP1.SGM 14JYP1 Federal Register / Vol. 82, No. 134 / Friday, July 14, 2017 / Proposed Rules NPRM published in the Federal Register on January 13, 2016 (81 FR 1586) (‘‘the NPRM’’). The NPRM was prompted by a discovery of cracking on two test spoiler power control units (PCUs) manifolds during testing by the manufacturer. The NPRM proposed to require replacement of affected spoiler PCUs. Actions Since the NPRM Was Issued Since we issued the NPRM, we have determined that certain airplanes were inadvertently omitted from the applicability of the NPRM; and additional actions were necessary. Transport Canada Civil Aviation (TCCA), which is the aviation authority for Canada, has issued Canadian Airworthiness Directive CF–2015–07R2, dated December 14, 2016 (referred to after this as the Mandatory Continuing Airworthiness Information, or ‘‘the MCAI’’), to correct an unsafe condition for certain Bombardier, Inc. Model DHC–8–401 and –402 airplanes. The MCAI states: During endurance and impulse testing of the spoiler PCU, cracks were discovered on two test spoiler PCU manifolds. Investigation determined that the crack initiation was due to the heat treat process. A cracked spoiler PCU manifold could cause the loss of one of the two hydraulic systems, resulting in the loss of multiple flight controls and landing gear systems. This condition, if not corrected, could adversely affect the continued safe operation and landing of the aeroplane. This [Canadian] AD mandates the replacement of the affected spoiler PCUs. Revision 1 of this [Canadian] AD was issued to extend the applicability to include additional aeroplane serial numbers and also modify the Corrective Actions to specifically mandate section 3.B of the [Service Bulletin] SB 84–27–64, Revision A. Revision 2 of this [Canadian] AD was issued to correct the SB referenced in the Background section. SB 84–27–64, Revision A should have been referenced in lieu of SB 84–27–63, Revision A. 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–2015– 8434. Related Service Information Under 1 CFR Part 51 Bombardier, Inc. has issued Bombardier Service Bulletin 84–27–64, Revision A, dated July 26, 2016. The service information describes procedures for replacement of affected spoiler PCU manifolds. Parker-Hannifin Corporation has issued Parker Service Bulletin 390700– 27–002, Revision 1, dated April 13, 2016. This service bulletin identifies affected spoiler PCUs that need to be returned to Parker Customer Support for rework. 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. Comments We gave the public the opportunity to participate in developing this proposed AD. We considered the comment received. Request To Remove Requirement for Job Set-up and Close-out Horizon Air requested that paragraph (g) of the proposed AD (in the NPRM) be revised to remove the requirement for job set-up and close-out in the Accomplishment Instructions of Bombardier Service Bulletin 84–27–64, dated July 15, 2014. Horizon Air stated that performing the job set-up and closeout sections specified in Bombardier Service Bulletin 84–27–64, dated July 15, 2014, as a requirement of the AD, restricts an operator’s ability to perform other maintenance in conjunction with 32497 incorporating Bombardier Service Bulletin 84–27–64, dated July 15, 2014. We agree that job set-up and close-out may be done using approved procedures other than those provided in the Accomplishment Instructions of Bombardier Service Bulletin 84–27–64, dated July 15, 2014, or Revision A, dated July 26, 2016. Therefore, access and close would not be specifically required by this proposed AD. We have revised paragraph (g) of this proposed AD (in the SNPRM) to require only the actions specified in paragraph 3.B. in the Accomplishment Instructions of Bombardier Service Bulletin 84–27–64, Revision A, dated July 26, 2016. We find that this change adequately addresses the commenter’s request. FAA’s Determination and Requirements of This SNPRM 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. Certain changes described above expand the scope of the NPRM. As a result, we have determined that it is necessary to reopen the comment period to provide additional opportunity for the public to comment on this SNPRM. Costs of Compliance We estimate that this SNPRM affects 82 airplanes of U.S. registry. We estimate the following costs to comply with this proposed AD: ESTIMATED COSTS Labor cost Parts cost Cost per product Remove and replace affected PCUs ..... mstockstill on DSK30JT082PROD with PROPOSALS Action 2 work-hours × $85 per hour = $170 per airplane. $10,000 per airplane $10,170 per airplane The new requirements of this proposed AD add no additional economic burden. 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 VerDate Sep<11>2014 17:18 Jul 13, 2017 Jkt 241001 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 PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 Cost on U.S. operators $833,940 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 E:\FR\FM\14JYP1.SGM 14JYP1 32498 Federal Register / Vol. 82, No. 134 / Friday, July 14, 2017 / Proposed Rules 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 1. The authority citation for part 39 continues to read as follows: ■ Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): ■ Bombardier, Inc.: Docket No. FAA–2015– 8434; Directorate Identifier 2015–NM– 082–AD. (a) Comments Due Date We must receive comments by August 28, 2017. mstockstill on DSK30JT082PROD with PROPOSALS (b) Affected ADs None. (c) Applicability This AD applies to the following Bombardier, Inc. Model DHC–8–401 and –402 airplanes, certificated in any category, serial numbers (S/Ns) 4001, and 4003 through 4527 inclusive, equipped with spoiler power control unit (PCU) part numbers (P/Ns) 390700–1007 and –1009 and that have any serial number identified in paragraph (c)(1), (c)(2), or (c)(3) of this AD. VerDate Sep<11>2014 17:18 Jul 13, 2017 Jkt 241001 (1) S/Ns 0474 through 1321 inclusive; (2) S/Ns identified in the Parker Service Bulletin 390700–27–002, Revision 1, section 4. Appendix, dated April 13, 2016; and (3) S/Ns 1394 through 1876 inclusive, without suffix ‘‘A.’’ (d) Subject Air Transport Association (ATA) of America Code 27, Flight Control System. (e) Reason This AD was prompted by the discovery of cracking on two test spoiler PCU manifolds during testing by the manufacturer. We are issuing this AD to prevent cracking of the spoiler PCUs that could lead to the loss of multiple flight controls and landing gear systems. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Inspection/Replacement Within 12,000 flight hours or 72 months after the effective date of this AD, whichever occurs first: Remove and replace the affected spoiler PCUs in accordance with paragraph 3.B. in the Accomplishment Instructions of Bombardier Service Bulletin 84–27–64, Revision A, dated July 26, 2016. (h) Parts Installation Prohibition After the actions required by paragraph (g) of this AD have been done, no person may install, on any airplane, a spoiler PCU, part number 390700–1007 and –1009, with: (1) S/Ns 0474 through 1321 inclusive; (2) S/Ns identified in the Parker Service Bulletin 390700–27–002, Revision 1, section 4. Appendix, dated April 13, 2016; and (3) S/Ns 1394 through 1876 inclusive, without suffix ‘‘A.’’ (i) 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 84–27–64, dated July 15, 2014. (j) Other FAA AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York Aircraft Certification Office (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. PO 00000 Frm 00006 Fmt 4702 Sfmt 4702 (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, FAA; or Transport Canada Civil Aviation (TCCA); or Bombardier, Inc.’s TCCA Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature. (k) Related Information (1) Refer to Mandatory Continuing Airworthiness Information (MCAI) Canadian AD CF–2015–07R2, dated December 14, 2016, 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– 2015–8434. (2) For further information about this AD, contact Cesar Gomez, Aerospace Engineer, Airframe and Mechanical Systems Branch, ANE–171, FAA, New York Aircraft Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516–228–7318; fax 516–794–5531; email: Cesar.Gomez@faa.gov. (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 thd.qseries@aero.bombardier.com; 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 June 29, 2017. Michael Kaszycki, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2017–14591 Filed 7–13–17; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2017–0694; Directorate Identifier 2017–NM–007–AD] RIN 2120–AA64 Airworthiness Directives; Dassault Aviation Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: We propose to adopt a new airworthiness directive (AD) for certain Dassault Aviation Model FALCON 7X airplanes. This proposed AD was prompted by a report indicating that fuselage panels were manufactured with SUMMARY: E:\FR\FM\14JYP1.SGM 14JYP1

Agencies

[Federal Register Volume 82, Number 134 (Friday, July 14, 2017)]
[Proposed Rules]
[Pages 32496-32498]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-14591]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2015-8434; Directorate Identifier 2015-NM-082-AD]
RIN 2120-AA64


Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Supplemental notice of proposed rulemaking (SNPRM); reopening 
of comment period.

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

SUMMARY: We are revising an earlier proposal for certain Bombardier, 
Inc., Model DHC-8-401 and -402 airplanes. This action revises the 
notice of proposed rulemaking (NPRM) by adding certain airplanes to the 
applicability and adding specified actions. We are proposing this 
airworthiness directive (AD) to address the unsafe condition on these 
products. Since these changes increase the scope of the NPRM, we are 
reopening the comment period to allow the public the chance to comment 
on these proposed changes.

DATES: The comment period for the NPRM published in the Federal 
Register on January 13, 2016 (81 FR 1586), is reopened.
    We must receive comments on this SNPRM by August 28, 2017.

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: 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 proposed 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 
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-2015-
8434; 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 
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: Cesar Gomez, Aerospace Engineer, 
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft 
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, 
NY 11590; telephone 516-228-7318; fax 516-794-5531.

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposal. Send your comments to an address listed 
under the ADDRESSES section. Include ``Docket No. FAA-2015-8434; 
Directorate Identifier 2015-NM-082-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

    We issued an NPRM to amend 14 CFR part 39 by adding an AD that 
would apply to certain Bombardier, Inc. Model DHC-8-401 and -402 
airplanes. The

[[Page 32497]]

NPRM published in the Federal Register on January 13, 2016 (81 FR 1586) 
(``the NPRM''). The NPRM was prompted by a discovery of cracking on two 
test spoiler power control units (PCUs) manifolds during testing by the 
manufacturer. The NPRM proposed to require replacement of affected 
spoiler PCUs.

Actions Since the NPRM Was Issued

    Since we issued the NPRM, we have determined that certain airplanes 
were inadvertently omitted from the applicability of the NPRM; and 
additional actions were necessary.
    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2015-07R2, dated December 14, 2016 (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-
401 and -402 airplanes. The MCAI states:

    During endurance and impulse testing of the spoiler PCU, cracks 
were discovered on two test spoiler PCU manifolds. Investigation 
determined that the crack initiation was due to the heat treat 
process. A cracked spoiler PCU manifold could cause the loss of one 
of the two hydraulic systems, resulting in the loss of multiple 
flight controls and landing gear systems. This condition, if not 
corrected, could adversely affect the continued safe operation and 
landing of the aeroplane.
    This [Canadian] AD mandates the replacement of the affected 
spoiler PCUs.
    Revision 1 of this [Canadian] AD was issued to extend the 
applicability to include additional aeroplane serial numbers and 
also modify the Corrective Actions to specifically mandate section 
3.B of the [Service Bulletin] SB 84-27-64, Revision A.
    Revision 2 of this [Canadian] AD was issued to correct the SB 
referenced in the Background section. SB 84-27-64, Revision A should 
have been referenced in lieu of SB 84-27-63, Revision A.

    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-2015-
8434.

Related Service Information Under 1 CFR Part 51

    Bombardier, Inc. has issued Bombardier Service Bulletin 84-27-64, 
Revision A, dated July 26, 2016. The service information describes 
procedures for replacement of affected spoiler PCU manifolds.
    Parker-Hannifin Corporation has issued Parker Service Bulletin 
390700-27-002, Revision 1, dated April 13, 2016. This service bulletin 
identifies affected spoiler PCUs that need to be returned to Parker 
Customer Support for rework.
    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.

Comments

    We gave the public the opportunity to participate in developing 
this proposed AD. We considered the comment received.

Request To Remove Requirement for Job Set-up and Close-out

    Horizon Air requested that paragraph (g) of the proposed AD (in the 
NPRM) be revised to remove the requirement for job set-up and close-out 
in the Accomplishment Instructions of Bombardier Service Bulletin 84-
27-64, dated July 15, 2014. Horizon Air stated that performing the job 
set-up and close-out sections specified in Bombardier Service Bulletin 
84-27-64, dated July 15, 2014, as a requirement of the AD, restricts an 
operator's ability to perform other maintenance in conjunction with 
incorporating Bombardier Service Bulletin 84-27-64, dated July 15, 
2014.
    We agree that job set-up and close-out may be done using approved 
procedures other than those provided in the Accomplishment Instructions 
of Bombardier Service Bulletin 84-27-64, dated July 15, 2014, or 
Revision A, dated July 26, 2016. Therefore, access and close would not 
be specifically required by this proposed AD. We have revised paragraph 
(g) of this proposed AD (in the SNPRM) to require only the actions 
specified in paragraph 3.B. in the Accomplishment Instructions of 
Bombardier Service Bulletin 84-27-64, Revision A, dated July 26, 2016. 
We find that this change adequately addresses the commenter's request.

FAA's Determination and Requirements of This SNPRM

    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.
    Certain changes described above expand the scope of the NPRM. As a 
result, we have determined that it is necessary to reopen the comment 
period to provide additional opportunity for the public to comment on 
this SNPRM.

Costs of Compliance

    We estimate that this SNPRM affects 82 airplanes of U.S. registry.
    We estimate the following costs to comply with this proposed AD:

                                                 Estimated costs
----------------------------------------------------------------------------------------------------------------
                                                                                                       Cost on
             Action                      Labor cost              Parts cost       Cost per product       U.S.
                                                                                                      operators
----------------------------------------------------------------------------------------------------------------
Remove and replace affected PCUs  2 work-hours x $85 per    $10,000 per          $10,170 per            $833,940
                                   hour = $170 per           airplane.            airplane.
                                   airplane.
----------------------------------------------------------------------------------------------------------------

    The new requirements of this proposed AD add no additional economic 
burden.

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

[[Page 32498]]

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]

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

Bombardier, Inc.: Docket No. FAA-2015-8434; Directorate Identifier 
2015-NM-082-AD.

(a) Comments Due Date

    We must receive comments by August 28, 2017.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to the following Bombardier, Inc. Model DHC-8-
401 and -402 airplanes, certificated in any category, serial numbers 
(S/Ns) 4001, and 4003 through 4527 inclusive, equipped with spoiler 
power control unit (PCU) part numbers (P/Ns) 390700-1007 and -1009 
and that have any serial number identified in paragraph (c)(1), 
(c)(2), or (c)(3) of this AD.
    (1) S/Ns 0474 through 1321 inclusive;
    (2) S/Ns identified in the Parker Service Bulletin 390700-27-
002, Revision 1, section 4. Appendix, dated April 13, 2016; and
    (3) S/Ns 1394 through 1876 inclusive, without suffix ``A.''

(d) Subject

    Air Transport Association (ATA) of America Code 27, Flight 
Control System.

(e) Reason

    This AD was prompted by the discovery of cracking on two test 
spoiler PCU manifolds during testing by the manufacturer. We are 
issuing this AD to prevent cracking of the spoiler PCUs that could 
lead to the loss of multiple flight controls and landing gear 
systems.

(f) Compliance

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

(g) Inspection/Replacement

    Within 12,000 flight hours or 72 months after the effective date 
of this AD, whichever occurs first: Remove and replace the affected 
spoiler PCUs in accordance with paragraph 3.B. in the Accomplishment 
Instructions of Bombardier Service Bulletin 84-27-64, Revision A, 
dated July 26, 2016.

(h) Parts Installation Prohibition

    After the actions required by paragraph (g) of this AD have been 
done, no person may install, on any airplane, a spoiler PCU, part 
number 390700-1007 and -1009, with:
    (1) S/Ns 0474 through 1321 inclusive;
    (2) S/Ns identified in the Parker Service Bulletin 390700-27-
002, Revision 1, section 4. Appendix, dated April 13, 2016; and
    (3) S/Ns 1394 through 1876 inclusive, without suffix ``A.''

(i) 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 84-27-64, dated 
July 15, 2014.

(j) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York Aircraft Certification Office (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, FAA; or Transport Canada Civil Aviation (TCCA); or 
Bombardier, Inc.'s TCCA Design Approval Organization (DAO). If 
approved by the DAO, the approval must include the DAO-authorized 
signature.

(k) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian AD CF-2015-07R2, dated December 14, 2016, 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-2015-8434.
    (2) For further information about this AD, contact Cesar Gomez, 
Aerospace Engineer, Airframe and Mechanical Systems Branch, ANE-171, 
FAA, New York Aircraft Certification Office (ACO), 1600 Stewart 
Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7318; fax 
516-794-5531; email: Cesar.Gomez@faa.gov.
    (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 thd.qseries@aero.bombardier.com; 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 June 29, 2017.
Michael Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2017-14591 Filed 7-13-17; 8:45 am]
 BILLING CODE 4910-13-P