Airworthiness Directives; Pratt & Whitney Division (PW) Turbofan Engines, 58199-58201 [2018-24944]

Download as PDF Federal Register / Vol. 83, No. 223 / Monday, November 19, 2018 / Proposed Rules (n) Related Information (1) For more information about this AD, contact Frank Carreras, Aerospace Engineer, Systems and Equipment Section, FAA, Seattle ACO Branch, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 206– 231–3539; email: frank.carreras@faa.gov. (2) For information about AMOCs, contact Jeffrey W. Palmer, Aerospace Engineer, Systems and Equipment Section, FAA, Los Angeles ACO Branch, 3960 Paramount Boulevard, Lakewood, CA 90712–4137; phone: 562–627–5851; fax: 562–627–5210; email: jeffrey.w.palmer@faa.gov. (3) For service information identified in this AD, contact Boeing Commercial Airplanes, Attention: Contractual & Data Services (C&DS), 2600 Westminster Blvd., MC 110–SK57, Seal Beach, CA 90740–5600; telephone 562–797–1717; internet https:// www.myboeingfleet.com. You may view this referenced service information at the FAA, Transport Standards Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. Issued in Des Moines, Washington, on November 7, 2018. Chris Spangenberg, Acting Director, System Oversight Division, Aircraft Certification Service. [FR Doc. 2018–25001 Filed 11–16–18; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2018–0924; Product Identifier 2018–NE–34–AD] RIN 2120–AA64 Airworthiness Directives; Pratt & Whitney Division (PW) Turbofan Engines Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: We propose to adopt a new airworthiness directive (AD) for certain Pratt & Whitney Division (PW) PW4158 turbofan engines. This proposed AD was prompted by several reports of high cycle fatigue (HCF) cracks found in the fuel nozzle supply manifold. This proposed AD would require replacement of the affected fuel nozzles and fuel nozzle manifold supply assemblies with parts eligible for installation. This proposed AD would also require installation of new brackets and clamps on the fuel supply manifold assemblies. We are proposing this AD to address the unsafe condition on these products. khammond on DSK30JT082PROD with PROPOSAL SUMMARY: VerDate Sep<11>2014 16:52 Nov 16, 2018 Jkt 247001 We must receive comments on this proposed AD by January 3, 2019. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods: • Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments. • Fax: 202–493–2251. • Mail: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this NPRM, contact Pratt & Whitney, 400 Main Street, East Hartford, CT 06108; phone: 860–565–8770; fax: 860– 565–4503. You may view this service information at the FAA, Engine and Propeller Standards Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781–238– 7759. DATES: Examining the AD Docket You may examine the AD docket on the internet at http://www.regulations .gov by searching for and locating Docket No. FAA–2018–0924; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this NPRM, the regulatory evaluation, any comments received, and other information. The address for Docket Operations (phone: 800–647–5527) is listed above. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Scott Hopper, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781– 238–7154; fax: 781–238–7199; email: scott.hopper@faa.gov. 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– 2018–0924; Product Identifier 2018– NE–34–AD’’ at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this NPRM. We will consider all comments received by the closing date and may amend this NPRM because of those comments. PO 00000 Frm 00009 Fmt 4702 Sfmt 4702 58199 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 NPRM. Discussion We received several reports of HCF cracks found in the fuel nozzle supply manifold tube at the braze joint interface on PW PW4158 turbofan engines identified with suffix–3 on the Engine Data Plate, and equipped with the Talon IIB combustor chamber. The root cause of the cracks in the braze joint was attributed to thermal mechanical fatigue due to high thermal gradients on engines equipped with the Talon IIB combustor chamber. This condition, if not addressed, could result in engine fire, damage to the engine, and damage to the airplane. Related Service Information Under 1 CFR Part 51 We reviewed PW Service Bulletin (SB) PW4ENG 73–224, dated November 8, 2017. The SB describes procedures for replacing the fuel nozzle supply manifold assemblies with parts eligible for installation, and installing new brackets and clamps on the fuel nozzle supply manifolds. 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. Other Related Service Information We reviewed PW SB PW4ENG 73– 223, dated February 5, 2018. This SB describes procedures for replacing the fuel nozzles and fuel nozzle support assemblies with parts eligible for installation. FAA’s Determination We are proposing this AD because we evaluated all the relevant information and determined the unsafe condition described previously is likely to exist or develop in other products of the same type design. Proposed AD Requirements This proposed AD would require replacing the affected fuel nozzles and fuel nozzle manifold supply assemblies with parts eligible for installation. This proposed AD would also require installation of new brackets and clamps on the fuel supply manifold assemblies. E:\FR\FM\19NOP1.SGM 19NOP1 58200 Federal Register / Vol. 83, No. 223 / Monday, November 19, 2018 / Proposed Rules Costs of Compliance We estimate the following costs to comply with this proposed AD: We estimate that this proposed AD affects 114 engines installed on airplanes of U.S. registry. ESTIMATED COSTS Action Labor cost Remove and replace (24) fuel nozzles ........ Replace fuel supply manifold tubes and install new clamps and brackets. 48 work-hours × $85 per hour = $4,080 ...... 16 work-hours × $85 per hour = $1,360 ...... khammond on DSK30JT082PROD with PROPOSAL Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII: Aviation Programs, describes in more detail the scope of the Agency’s authority. We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: ‘‘General requirements.’’ Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. This AD is issued in accordance with authority delegated by the Executive Director, Aircraft Certification Service, as authorized by FAA Order 8000.51C. In accordance with that order, issuance of ADs is normally a function of the Compliance and Airworthiness Division, but during this transition period, the Executive Director has delegated the authority to issue ADs applicable to engines, propellers, and associated appliances to the Manager, Engine and Propeller Standards Branch, Policy and Innovation Division. 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, VerDate Sep<11>2014 16:52 Nov 16, 2018 Jkt 247001 Parts cost Cost per product Cost on U.S. operators $423,471.12 77,158.97 $427,551.12 78,518.97 $48,740,827.68 8,951,162.58 (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 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): Pratt & Whitney Division: Docket No. FAA– 2018–0924; Product Identifier 2018–NE– 34–AD. (a) Comments Due Date We must receive comments by January 3, 2019. (b) Affected ADs None. (c) Applicability This AD applies to Pratt & Whitney Division (PW) PW4158 turbofan engines designated by a –3 on the Engine Data Plate and with Talon II outer combustion chamber assembly, part number (P/N) 51J228, installed. (d) Subject Joint Aircraft System Component (JASC) Code 7310, Engine Fuel Distribution. Frm 00010 Fmt 4702 This AD was prompted by several reports of high cycle fatigue (HCF) cracks found in the fuel nozzle supply manifold tube at the braze joint interface. We are issuing this AD to prevent failure of the fuel nozzles. The unsafe condition, if not addressed, could result in engine fire, damage to the engine, and damage to the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions No later than, the next engine shop visit after the effective date of this AD, do the following: (1) Remove the 24 fuel nozzles, part number (P/N) 51J344, and replace with P/N 51J397. (2) Replace the fuel nozzle manifold supply assemblies and install new brackets and clamps on the fuel supply manifolds in accordance with the ‘‘For Engines Installed on Aircraft’’ or ‘‘For Engines Not Installed on Aircraft’’ sections, as applicable, of the Accomplishment Instructions in PW Service Bulletin (SB) PW4ENG 73–224, dated November 8, 2017. (h) Definitions [Amended] ■ PO 00000 (e) Unsafe Condition Sfmt 4702 For the purpose of this AD, an ‘‘engine shop visit’’ is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine case flanges, except for the following situations, which do not constitute an engine shop visit: (1) Separation of engine flanges solely for the purposes of transportation of the engine without subsequent maintenance. (2) Separation of engine flanges solely for the purposes of replacing the fan or propulsor without subsequent maintenance. (i) Alternative Methods of Compliance (AMOCs) (1) The Manager, ECO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (j)(1) of this AD. E:\FR\FM\19NOP1.SGM 19NOP1 Federal Register / Vol. 83, No. 223 / Monday, November 19, 2018 / Proposed Rules Information may be emailed to: ANE-ADAMOC@faa.gov. (2) 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. (j) Related Information (1) For more information about this AD, contact Scott Hopper, Aerospace Engineer, ECO Branch, FAA, Engine and Propeller Standards Branch, 1200 District Avenue, Burlington, MA 01803; phone: 781–238– 7154; fax: 781–238–7199; email: scott.hopper@faa.gov. (2) For PW service information identified in this AD, contact Pratt & Whitney, 400 Main St., East Hartford, CT 06108; phone: 860–565–8770; fax: 860–565–4503. You may view this service information at the FAA, Engine and Propeller Standards Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781–238–7759. Issued in Burlington, Massachusetts, on November 9, 2018. Karen M. Grant, Acting Manager, Engine and Propeller Standards Branch, Aircraft Certification Service. [FR Doc. 2018–24944 Filed 11–16–18; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF COMMERCE Bureau of Industry and Security 15 CFR Part 744 [Docket No. 180712626–8840–01] RIN 0694–AH61 Review of Controls for Certain Emerging Technologies SUPPLEMENTARY INFORMATION: Background Bureau of Industry and Security, Commerce. ACTION: Advance notice of proposed rulemaking (ANPRM). AGENCY: The Bureau of Industry and Security (BIS) controls the export of dual-use and less sensitive military items through the Export Administration Regulations (EAR), including the Commerce Control List (CCL). As controls on exports of technology are a key component of the effort to protect sensitive U.S. technology, many sensitive technologies are listed on the CCL, often consistent with the lists maintained by the multilateral export control regimes of which the United States is a member. Certain technologies, however, may not yet be listed on the CCL or controlled multilaterally because they are emerging technologies. As such, they have not yet been evaluated for their national khammond on DSK30JT082PROD with PROPOSAL SUMMARY: VerDate Sep<11>2014 16:52 Nov 16, 2018 Jkt 247001 security impacts. This advance notice of proposed rulemaking (ANPRM) seeks public comment on criteria for identifying emerging technologies that are essential to U.S. national security, for example because they have potential conventional weapons, intelligence collection, weapons of mass destruction, or terrorist applications or could provide the United States with a qualitative military or intelligence advantage. Comment on this ANPRM will help inform the interagency process to identify and describe such emerging technologies. This interagency process is anticipated to result in proposed rules for new Export Control Classification Numbers (ECCNs) on the CCL. DATES: Submit comments on or before December 19, 2018. ADDRESSES: You may submit comments through either of the following: • Federal eRulemaking Portal: http:// www.regulations.gov. The identification number for this rulemaking is BIS 2018– 0024. • Address: By mail or delivery to Regulatory Policy Division, Bureau of Industry and Security, U.S. Department of Commerce, Room 2099B, 14th Street and Pennsylvania Avenue NW, Washington, DC 20230. Refer to RIN 0694–AH61. FOR FURTHER INFORMATION CONTACT: Kirsten Mortimer, Office of National Security and Technology Transfer Controls, Bureau of Industry and Security, Department of Commerce. Phone: (202) 482–0092; Fax (202) 482– 3355; Email: Kirsten.Mortimer@ bis.doc.gov. As part of the National Defense Authorization Act (NDAA) for Fiscal Year 2019, Public Law No: 115–232, Congress enacted the Export Control Reform Act of 2018 (the Act or ECRA). Section 1758 of the Act authorizes Commerce to establish appropriate controls, including interim controls, on the export, reexport, or transfer (in country) of emerging and foundational technologies. Under the Act, emerging and foundational technologies are those essential to the national security of the United States and are not described in Section 721(a)(6)(A)(i)–(v) of the Defense Production Act of 1950, as amended. Emerging and foundational technologies, in keeping with ECRA, will be determined by an interagency process that will consider both public and classified information as well as information from the Emerging Technology Technical Advisory PO 00000 Frm 00011 Fmt 4702 Sfmt 4702 58201 Committee and the Committee on Foreign Investment in the United States. In identifying emerging and foundational technologies, the process must consider: • The development of emerging and foundational technologies in foreign countries; • The effect export controls may have on the development of such technologies in the United States; and • The effectiveness of export controls on limiting the proliferation of emerging and foundational technologies in foreign countries. To help inform this process, this advance notice of proposed rulemaking (ANPRM) proposes several general areas for public comment. Given the challenges involved in identifying emerging and foundational technologies, this ANPRM will help Commerce and other agencies propose specific emerging technologies for control. Once an emerging or foundational technology has been identified, the Act authorizes Commerce to establish controls, including interim controls, on the export, reexport, or transfer (incountry) of that technology. In determining the appropriate level of export controls, the Department must consider the potential end-uses and end-users of the technology, and countries to which exports from the United States are restricted (e.g., embargoed countries). While Commerce has discretion to set the level of export controls, at a minimum it must require a license for the export of emerging and foundational technologies to countries subject to a U.S. embargo, including those subject to an arms embargo. Responses to this ANPRM will help Commerce and other agencies identify and assess emerging technologies for the purposes of updating the export control lists without impairing national security or hampering the ability of the U.S. commercial sector to keep pace with international advances in emerging fields. Emerging Technologies To assist BIS in identifying emerging technologies that are essential to the national security of the United States, this ANPRM seeks public comment on criteria for defining and identifying emerging technologies. This ANPRM describes certain categories of technology that are currently subject to the EAR but controlled only to embargoed countries, countries designated as supporters of international terrorism, and restricted end uses or end users. These categories are a representative list of the E:\FR\FM\19NOP1.SGM 19NOP1

Agencies

[Federal Register Volume 83, Number 223 (Monday, November 19, 2018)]
[Proposed Rules]
[Pages 58199-58201]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2018-24944]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0924; Product Identifier 2018-NE-34-AD]
RIN 2120-AA64


Airworthiness Directives; Pratt & Whitney Division (PW) Turbofan 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain Pratt & Whitney Division (PW) PW4158 turbofan engines. This 
proposed AD was prompted by several reports of high cycle fatigue (HCF) 
cracks found in the fuel nozzle supply manifold. This proposed AD would 
require replacement of the affected fuel nozzles and fuel nozzle 
manifold supply assemblies with parts eligible for installation. This 
proposed AD would also require installation of new brackets and clamps 
on the fuel supply manifold assemblies. We are proposing this AD to 
address the unsafe condition on these products.

DATES: We must receive comments on this proposed AD by January 3, 2019.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
     Fax: 202-493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE, Washington, DC 20590.
     Hand Delivery: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    For service information identified in this NPRM, contact Pratt & 
Whitney, 400 Main Street, East Hartford, CT 06108; phone: 860-565-8770; 
fax: 860-565-4503. You may view this service information at the FAA, 
Engine and Propeller Standards Branch, 1200 District Avenue, 
Burlington, MA 01803. For information on the availability of this 
material at the FAA, call 781-238-7759.

Examining the AD Docket

    You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0924; or in person at Docket Operations between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The AD docket contains 
this NPRM, the regulatory evaluation, any comments received, and other 
information. The address for Docket Operations (phone: 800-647-5527) is 
listed above. Comments will be available in the AD docket shortly after 
receipt.

FOR FURTHER INFORMATION CONTACT: Scott Hopper, Aerospace Engineer, ECO 
Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781-
238-7154; fax: 781-238-7199; email: [email protected].

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-2018-0924; 
Product Identifier 2018-NE-34-AD'' at the beginning of your comments. 
We specifically invite comments on the overall regulatory, economic, 
environmental, and energy aspects of this NPRM. We will consider all 
comments received by the closing date and may amend this NPRM because 
of 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 NPRM.

Discussion

    We received several reports of HCF cracks found in the fuel nozzle 
supply manifold tube at the braze joint interface on PW PW4158 turbofan 
engines identified with suffix-3 on the Engine Data Plate, and equipped 
with the Talon IIB combustor chamber. The root cause of the cracks in 
the braze joint was attributed to thermal mechanical fatigue due to 
high thermal gradients on engines equipped with the Talon IIB combustor 
chamber. This condition, if not addressed, could result in engine fire, 
damage to the engine, and damage to the airplane.

Related Service Information Under 1 CFR Part 51

    We reviewed PW Service Bulletin (SB) PW4ENG 73-224, dated November 
8, 2017. The SB describes procedures for replacing the fuel nozzle 
supply manifold assemblies with parts eligible for installation, and 
installing new brackets and clamps on the fuel nozzle supply manifolds. 
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.

Other Related Service Information

    We reviewed PW SB PW4ENG 73-223, dated February 5, 2018. This SB 
describes procedures for replacing the fuel nozzles and fuel nozzle 
support assemblies with parts eligible for installation.

FAA's Determination

    We are proposing this AD because we evaluated all the relevant 
information and determined the unsafe condition described previously is 
likely to exist or develop in other products of the same type design.

Proposed AD Requirements

    This proposed AD would require replacing the affected fuel nozzles 
and fuel nozzle manifold supply assemblies with parts eligible for 
installation. This proposed AD would also require installation of new 
brackets and clamps on the fuel supply manifold assemblies.

[[Page 58200]]

Costs of Compliance

    We estimate that this proposed AD affects 114 engines installed on 
airplanes of U.S. registry.
    We estimate the following costs to comply with this proposed AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                   Cost per       Cost on U.S.
              Action                        Labor cost            Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
Remove and replace (24) fuel        48 work-hours x $85 per        $423,471.12     $427,551.12    $48,740,827.68
 nozzles.                            hour = $4,080.
Replace fuel supply manifold tubes  16 work-hours x $85 per          77,158.97       78,518.97      8,951,162.58
 and install new clamps and          hour = $1,360.
 brackets.
----------------------------------------------------------------------------------------------------------------

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. Subtitle VII: Aviation Programs, 
describes in more detail the scope of the Agency's authority.
    We are issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701: ``General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.
    This AD is issued in accordance with authority delegated by the 
Executive Director, Aircraft Certification Service, as authorized by 
FAA Order 8000.51C. In accordance with that order, issuance of ADs is 
normally a function of the Compliance and Airworthiness Division, but 
during this transition period, the Executive Director has delegated the 
authority to issue ADs applicable to engines, propellers, and 
associated appliances to the Manager, Engine and Propeller Standards 
Branch, Policy and Innovation Division.

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):

Pratt & Whitney Division: Docket No. FAA-2018-0924; Product 
Identifier 2018-NE-34-AD.

(a) Comments Due Date

    We must receive comments by January 3, 2019.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Pratt & Whitney Division (PW) PW4158 turbofan 
engines designated by a -3 on the Engine Data Plate and with Talon 
II outer combustion chamber assembly, part number (P/N) 51J228, 
installed.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7310, Engine Fuel 
Distribution.

(e) Unsafe Condition

    This AD was prompted by several reports of high cycle fatigue 
(HCF) cracks found in the fuel nozzle supply manifold tube at the 
braze joint interface. We are issuing this AD to prevent failure of 
the fuel nozzles. The unsafe condition, if not addressed, could 
result in engine fire, damage to the engine, and damage to the 
airplane.

(f) Compliance

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

(g) Required Actions

    No later than, the next engine shop visit after the effective 
date of this AD, do the following:
    (1) Remove the 24 fuel nozzles, part number (P/N) 51J344, and 
replace with P/N 51J397.
    (2) Replace the fuel nozzle manifold supply assemblies and 
install new brackets and clamps on the fuel supply manifolds in 
accordance with the ``For Engines Installed on Aircraft'' or ``For 
Engines Not Installed on Aircraft'' sections, as applicable, of the 
Accomplishment Instructions in PW Service Bulletin (SB) PW4ENG 73-
224, dated November 8, 2017.

(h) Definitions

    For the purpose of this AD, an ``engine shop visit'' is the 
induction of an engine into the shop for maintenance involving the 
separation of pairs of major mating engine case flanges, except for 
the following situations, which do not constitute an engine shop 
visit:
    (1) Separation of engine flanges solely for the purposes of 
transportation of the engine without subsequent maintenance.
    (2) Separation of engine flanges solely for the purposes of 
replacing the fan or propulsor without subsequent maintenance.

(i) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, ECO Branch, FAA, has the authority to approve 
AMOCs for this AD, if requested using the procedures found in 14 CFR 
39.19. In accordance with 14 CFR 39.19, send your request to your 
principal inspector or local Flight Standards District Office, as 
appropriate. If sending information directly to the manager of the 
certification office, send it to the attention of the person 
identified in paragraph (j)(1) of this AD.

[[Page 58201]]

Information may be emailed to: [email protected].
    (2) 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.

(j) Related Information

    (1) For more information about this AD, contact Scott Hopper, 
Aerospace Engineer, ECO Branch, FAA, Engine and Propeller Standards 
Branch, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-
7154; fax: 781-238-7199; email: [email protected].
    (2) For PW service information identified in this AD, contact 
Pratt & Whitney, 400 Main St., East Hartford, CT 06108; phone: 860-
565-8770; fax: 860-565-4503. You may view this service information 
at the FAA, Engine and Propeller Standards Branch, 1200 District 
Avenue, Burlington, MA 01803. For information on the availability of 
this material at the FAA, call 781-238-7759.

    Issued in Burlington, Massachusetts, on November 9, 2018.
Karen M. Grant,
Acting Manager, Engine and Propeller Standards Branch, Aircraft 
Certification Service.
[FR Doc. 2018-24944 Filed 11-16-18; 8:45 am]
 BILLING CODE 4910-13-P