Airworthiness Directives; Pratt & Whitney Division Turbofan Engines, 11211-11214 [2019-05708]

Download as PDF 11211 Rules and Regulations Federal Register Vol. 84, No. 58 Tuesday, March 26, 2019 This section of the FEDERAL REGISTER contains regulatory documents having general applicability and legal effect, most of which are keyed to and codified in the Code of Federal Regulations, which is published under 50 titles pursuant to 44 U.S.C. 1510. The Code of Federal Regulations is sold by the Superintendent of Documents. DEPARTMENT OF AGRICULTURE Federal Crop Insurance Corporation 7 CFR Part 457 [Docket No. FCIC -18–0002] RIN 0563–AC57 Common Crop Insurance Regulations; Forage Seeding Crop Insurance Provisions; Withdrawal Federal Crop Insurance Corporation, USDA. ACTION: Notice of withdrawal of final rule. jbell on DSK30RV082PROD with RULES AGENCY: SUMMARY: This action informs the public that the Federal Crop Insurance Corporation (FCIC) is withdrawing a final rule with request for comments published in the Federal Register on December 10, 2018, titled Common Crop Insurance Regulations; Forage Seeding Crop Insurance Provisions. FCIC updated the Forage Seeding Crop Provisions (CP) to better reflect current agricultural practices and allow for variations in insurance provisions based on regionally-specific agronomic conditions and potential future expansions. The Forage Seeding CP cover losses from insured perils during the year of planting forage and would provide continuous coverage throughout the year of planting effective for the 2020 crop year. FCIC withdraws the Forage Seeding final rule due to the need to address outstanding issues, conduct additional research, and obtain data for program expansion to ensure continuous coverage between the year of planting and after the crop has been established. DATES: As of March 26, 2019, the final rule with request for comments published on December 10, 2018, at 83 FR 63383, is withdrawn. FOR FURTHER INFORMATION CONTACT: Francie Tolle, Director, Product Management, Product Administration and Standards Division, Risk VerDate Sep<11>2014 15:55 Mar 25, 2019 Jkt 247001 Management Agency, United States Department of Agriculture, Beacon Facility, Stop 0812, Room 421, P.O. Box 419205, Kansas City, MO 64141–6205, telephone (816) 926–7730. SUPPLEMENTARY INFORMATION: FCIC is withdrawing the Forage Seeding CP Final Rule with request for comments published on December 10, 2018 (83 FR 63383–63389). These changes were to be effective for the April 30, 2019, contract change date for the 2020 crop year. The Forage Seeding CP provide insurance during the year of planting the forage. The Forage Production CP allow insurance to continue after the forage crop has been established. The two policies are connected and must be considered together. FCIC intended to immediately follow the Forage Seeding Final Rule with a Forage Production Final Rule, to be published effective June 30, 2019. Due to the need to address outstanding issues for the Forage Seeding Final Rule identified during the comment period, obtain data for program expansion, and prepare and publish the Forage Production Final Rule to be effective for the same crop year as the Forage Seeding, FCIC withdraws the Forage Seeding Final Rule and will resubmit simultaneously with the Forage Production final rule at a later date. Therefore, as of March 26, 2019, the final rule with request for comments published on December 10, 2018, at 83 FR 63383, is withdrawn. Martin Barbre, Manager, Federal Crop Insurance Corporation. [FR Doc. 2019–05718 Filed 3–25–19; 8:45 am] BILLING CODE 3410–08–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2018–0924; Product Identifier 2018–NE–34–AD; Amendment 39– 19600; AD 2019–06–02] RIN 2120–AA64 Airworthiness Directives; Pratt & Whitney Division Turbofan Engines Federal Aviation Administration (FAA), DOT. AGENCY: PO 00000 Frm 00001 Fmt 4700 Sfmt 4700 ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain Pratt & Whitney Division (PW) PW4158 turbofan engines. This AD was prompted by several reports of high cycle fatigue (HCF) cracks found in the fuel nozzle supply manifold. This AD requires replacement of the affected fuel nozzles and fuel nozzle manifold supply assemblies with parts eligible for installation. This AD also requires installation of new brackets and clamps on the fuel nozzle supply manifold assemblies. We are issuing this AD to address the unsafe condition on these products. DATES: This AD is effective April 30, 2019. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of April 30, 2019. ADDRESSES: For service information identified in this final rule, 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. It is also available on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2018– 0924. 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–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 final rule, the regulatory evaluation, any comments received, and other information. The address for Docket Operations (phone: 800–647–5527) is U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Scott Hopper, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA, 01803; phone: 781– E:\FR\FM\26MRR1.SGM 26MRR1 11212 Federal Register / Vol. 84, No. 58 / Tuesday, March 26, 2019 / Rules and Regulations 238–7154; fax: 781–238–7199; email: scott.hopper@faa.gov. SUPPLEMENTARY INFORMATION: Discussion We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to certain PW PW4158 turbofan engines. The NPRM published in the Federal Register on November 19, 2018 (83 FR 58199). The NPRM was prompted by several reports of HCF cracks found in the fuel nozzle supply manifold. The NPRM proposed to require replacement of the affected fuel nozzles and fuel nozzle manifold supply assemblies with parts eligible for installation. The NPRM also proposed to require installation of new brackets and clamps on the fuel nozzle supply manifold assemblies. We are issuing this AD to address the unsafe condition on these products. Comments We gave the public the opportunity to participate in developing this final rule. The following presents the comments received on the NPRM and the FAA’s response to each comment. Request To Use Overhauled Fuel Manifolds United Parcel Service Co. (UPS) and Pratt & Whitney requested that the AD clarify that overhauled fuel manifolds that have had new tube details installed meet the intent of installing new fuel manifolds called for in Pratt & Whitney Service Bulletin (SB) PW4ENG 73–224, dated November 8, 2017. UPS and Pratt & Whitney noted that the equivalent Pratt & Whitney SB PW4G–100–73–48, Revision No. 1, dated April 24, 2018, for PW PW4000–100 engines, allows use of repaired manifolds. We disagree because Pratt & Whitney SB PW4ENG 73–224, dated November 8, 2017, does not allow the installation of overhauled fuel manifolds with new tube details. We recommend that operators who would like to use overhauled manifolds submit an AMOC request. Request To Clarify Applicability SR Technics Switzerland Ltd. requested we clarify the identification of potentially affected engines since part number (P/N) 51J228 is a sales order option and does not appear in PW service bulletins. UPS recommended that we revise the applicability to refer to ‘‘All Engines that incorporate Talon II Burner Sales Order Option P/N 51J228.’’ The commenters indicated that P/N 51J228 is not listed in the applicable PW parts catalogue or in a service bulletin. We partially agree. We agree to clarify the applicability of this AD. We disagree with referring to ‘‘engines that incorporate Talon II Burner Sales Order Option P/N 51J228’’ as this reference is not sufficiently clear to operators. We revised the Applicability of this AD to refer to the specifically affected engine serial numbers. Request for Previous Credit UPS requested that the rule include a ‘‘Credits for Previous Actions’’ section in this AD stating that affected engines that have fully incorporated prior revisions of both Pratt & Whitney SB PW4ENG 73–223, dated February 5, 2018, and Pratt & Whitney SB PW4ENG 73–224, dated November 8, 2017, may take credit for the required actions. UPS reasoned that PW is considering publishing a revision to Pratt & Whitney SB PW4ENG 73–224 that will allow use of overhauled fuel supply manifolds. We disagree. We cannot give credit for previous action based on service bulletins that have not been published. We did not change this AD. Request To Revise Compliance UPS commented that paragraph (g)(1) in the NPRM only referred to P/N 51J344. UPS noted that there are other pre-SB 73–223 part numbers, such as P/ N 51J235, that may be found installed in Talon II engines. UPS suggested that we revise the compliance paragraph (g)(1) in this AD to be similar to paragraph (g)(2) of this AD—for example, ‘‘Replace the 24 fuel nozzles with part number 51J397 per Pratt & Whitney SB PW4ENG 73–223.’’ We agree. Fuel nozzle designs other than P/N 51J397 are also susceptible to braze joint cracking. We revised paragraph (g)(1) of this AD based on the change suggested by the commenter. Support for the AD The Air Line Pilots Association International expressed support for the AD as written. Conclusion We reviewed the relevant data, considered the comments received, and determined that air safety and the public interest require adopting this final rule with the changes described previously and minor editorial changes. We have determined that these minor changes: • Are consistent with the intent that was proposed in the NPRM for addressing the unsafe condition; and • Do not add any additional burden upon the public than was already proposed in the NPRM. We also determined that these changes will not increase the economic burden on any operator or increase the scope of this final rule. Related Service Information Under 1 CFR Part 51 We reviewed Pratt & Whitney 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 Pratt & Whitney 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. Costs of Compliance We estimate that this AD affects 114 engines installed on airplanes of U.S. registry. We estimate the following costs to comply with this AD: jbell on DSK30RV082PROD with RULES 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 ..... VerDate Sep<11>2014 15:55 Mar 25, 2019 Jkt 247001 PO 00000 Frm 00002 Fmt 4700 Sfmt 4700 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 E:\FR\FM\26MRR1.SGM 26MRR1 Federal Register / Vol. 84, No. 58 / Tuesday, March 26, 2019 / Rules and Regulations Adoption of the Amendment 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. Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: Regulatory Findings jbell on DSK30RV082PROD with RULES (h) Definitions Authority for This Rulemaking This AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify that this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, (2) Is not a ‘‘significant rule’’ under 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. VerDate Sep<11>2014 15:55 Mar 25, 2019 Jkt 247001 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): ■ 2019–06–02 Pratt & Whitney Division: Amendment 39–19600; Docket No. FAA–2018–0924; Product Identifier 2018–NE–34–AD. (a) Effective Date This AD is effective April 30, 2019. (b) Affected ADs None. (c) Applicability This AD applies to Pratt & Whitney Division PW4158 turbofan engines designated by a–3 on the Engine Data Plate and with the following engine serial numbers: 728534 to 728555; 728557 to 728585; 728587 to 728591; 728593; 728598; 729808 to 729824; or 729826 to 729864. (d) Subject Joint Aircraft System Component (JASC) Code 7310, Engine Fuel Distribution. 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 any of the 24 fuel nozzles, part number (P/N) 51J235 or 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 Pratt & Whitney Service Bulletin (SB) PW4ENG 73– 224, dated November 8, 2017. Frm 00003 Fmt 4700 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) of this AD. 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 For more information about this AD, 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. (k) Material Incorporated by Reference (e) Unsafe Condition PO 00000 11213 Sfmt 4700 (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Pratt & Whitney Service Bulletin PW4ENG 73–224, dated November 8, 2017. (ii) [Reserved] (3) For Pratt & Whitney service information identified in this AD, contact Pratt & Whitney, 400 Main Street, East Hartford, CT 06108; phone: 860–565–8770; fax: 860–565– 4503. (4) 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. (5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to: https:// www.archives.gov/federal-register/cfr/ibrlocations.html. E:\FR\FM\26MRR1.SGM 26MRR1 11214 Federal Register / Vol. 84, No. 58 / Tuesday, March 26, 2019 / Rules and Regulations • 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 20590, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. Issued in Burlington, Massachusetts, on March 19, 2019. Karen M. Grant, Acting Manager, Engine and Propeller Standards Branch, Aircraft Certification Service. [FR Doc. 2019–05708 Filed 3–25–19; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2018–0735; Product Identifier 2018–NE–26–AD; Amendment 39– 19599; AD 2019–06–01] RIN 2120–AA64 Airworthiness Directives; International Aero Engines Turbofan Engines Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comments. AGENCY: SUMMARY: We are superseding Airworthiness Directive (AD) 2018–24– 01 for certain International Aero Engines (IAE) PW1133G–JM, PW1133GA–JM, PW1130G–JM, PW1127G–JM, PW1127GA–JM, PW1127G1–JM, PW1124G–JM, PW1124G1–JM, and PW1122G–JM turbofan engines. AD 2018–24–01 required removing certain low-pressure turbine (LPT) 1st- and 3rd-stage disks from service and replacing with a part eligible for installation. This AD retains the same requirements as AD 2018–24– 01. This AD was prompted by the discovery of incorrect serial numbers in the identification of LPT disks in AD 2018–24–01. We are issuing this AD to address the unsafe condition on these products. This AD is effective April 10, 2019. We must receive any comments on this AD by May 10, 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 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. jbell on DSK30RV082PROD with RULES DATES: VerDate Sep<11>2014 15:55 Mar 25, 2019 Jkt 247001 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–2018– 0735; 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 final rule, the regulatory evaluation, any comments received, and other information. The street 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: Kevin M. Clark, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781–238–7088; fax: 781–238–7199; email: kevin.m.clark@faa.gov. SUPPLEMENTARY INFORMATION: Discussion We issued AD 2018–24–01, Amendment 39–19505 (84 FR 2715, February 8, 2019), (‘‘AD 2018–24–01’’), for all IAE PW1133G–JM, PW1133GA– JM, PW1130G–JM, PW1127G–JM, PW1127GA–JM, PW1127G1–JM, PW1124G–JM, PW1124G1–JM, and PW1122G–JM turbofan engines with certain LPT 1st- and 3rd-stage disks installed. AD 2018–24–01 required removing certain LPT 1st- and 3rd-stage disks from service and replacing with a part eligible for installation. AD 2018– 24–01 resulted from by a report of manufacturing defects found on delivered LPT 1st- and 3rd-stage disks. We issued AD 2018–24–01 to prevent failure of the LPT 1st- or 3rd-stage disk. Actions Since AD 2018–24–01 Was Issued Since we issued AD 2018–24–01, we learned of incorrect and omitted serial numbers for LPT 1st-stage and 3rd-stage disks in AD 2018–24–01. Two serial numbers, LLDLAJ4594 and LLDLAJ4595, were identified incorrectly, respectively, as LLDLAJ4494 and LLDLAJ4495 in Figure 1 to Paragraph (g) of AD 2018–24–01. In addition, one serial number, LLDLAJ6115, was included in the PO 00000 Frm 00004 Fmt 4700 Sfmt 4700 NPRM but inadvertently omitted from Figure 2 to Paragraph (g) of AD 2018– 24–01. We are issuing this AD to address the unsafe condition on these products. FAA’s Determination We are issuing 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. AD Requirements This AD requires removing certain LPT 1st- and 3rd-stage disks from service and replacing with a part eligible for installation. FAA’s Justification and Determination of the Effective Date No domestic operators use this product. Therefore, we find good cause that notice and opportunity for prior public comment are impracticable. In addition, for the reason stated above, we find that good cause exists for making this amendment effective in less than 30 days. Comments Invited This AD is a final rule that involves requirements affecting flight safety, and we did not provide you with notice and an opportunity to provide your comments before it becomes effective. However, we invite you to send any written data, views, or arguments about this final rule. Send your comments to an address listed under the ADDRESSES section. Include the docket number FAA–2018–0735 and product identifier 2018–NE–26–AD at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this final rule. We will consider all comments received by the closing date and may amend this final rule because of 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 final rule. Costs of Compliance We estimate that this AD affects 0 engines installed on airplanes of U.S. registry. We estimate the following costs to comply with this AD: E:\FR\FM\26MRR1.SGM 26MRR1

Agencies

[Federal Register Volume 84, Number 58 (Tuesday, March 26, 2019)]
[Rules and Regulations]
[Pages 11211-11214]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2019-05708]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0924; Product Identifier 2018-NE-34-AD; Amendment 
39-19600; AD 2019-06-02]
RIN 2120-AA64


Airworthiness Directives; Pratt & Whitney Division Turbofan 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

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

DATES: This AD is effective April 30, 2019.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of April 30, 
2019.

ADDRESSES: For service information identified in this final rule, 
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. It is also 
available on the internet at https://www.regulations.gov by searching 
for and locating Docket No. FAA-2018-0924.

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-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 final rule, the regulatory evaluation, any comments received, and 
other information. The address for Docket Operations (phone: 800-647-
5527) is U.S. Department of Transportation, Docket Operations, M-30, 
West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE, 
Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Scott Hopper, Aerospace Engineer, ECO 
Branch, FAA, 1200 District Avenue, Burlington, MA, 01803; phone: 781-

[[Page 11212]]

238-7154; fax: 781-238-7199; email: scott.hopper@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 by adding an AD that would apply to certain PW PW4158 turbofan 
engines. The NPRM published in the Federal Register on November 19, 
2018 (83 FR 58199). The NPRM was prompted by several reports of HCF 
cracks found in the fuel nozzle supply manifold. The NPRM proposed to 
require replacement of the affected fuel nozzles and fuel nozzle 
manifold supply assemblies with parts eligible for installation. The 
NPRM also proposed to require installation of new brackets and clamps 
on the fuel nozzle supply manifold assemblies. We are issuing this AD 
to address the unsafe condition on these products.

Comments

    We gave the public the opportunity to participate in developing 
this final rule. The following presents the comments received on the 
NPRM and the FAA's response to each comment.

Request To Use Overhauled Fuel Manifolds

    United Parcel Service Co. (UPS) and Pratt & Whitney requested that 
the AD clarify that overhauled fuel manifolds that have had new tube 
details installed meet the intent of installing new fuel manifolds 
called for in Pratt & Whitney Service Bulletin (SB) PW4ENG 73-224, 
dated November 8, 2017. UPS and Pratt & Whitney noted that the 
equivalent Pratt & Whitney SB PW4G-100-73-48, Revision No. 1, dated 
April 24, 2018, for PW PW4000-100 engines, allows use of repaired 
manifolds.
    We disagree because Pratt & Whitney SB PW4ENG 73-224, dated 
November 8, 2017, does not allow the installation of overhauled fuel 
manifolds with new tube details. We recommend that operators who would 
like to use overhauled manifolds submit an AMOC request.

Request To Clarify Applicability

    SR Technics Switzerland Ltd. requested we clarify the 
identification of potentially affected engines since part number (P/N) 
51J228 is a sales order option and does not appear in PW service 
bulletins. UPS recommended that we revise the applicability to refer to 
``All Engines that incorporate Talon II Burner Sales Order Option P/N 
51J228.'' The commenters indicated that P/N 51J228 is not listed in the 
applicable PW parts catalogue or in a service bulletin.
    We partially agree. We agree to clarify the applicability of this 
AD. We disagree with referring to ``engines that incorporate Talon II 
Burner Sales Order Option P/N 51J228'' as this reference is not 
sufficiently clear to operators. We revised the Applicability of this 
AD to refer to the specifically affected engine serial numbers.

Request for Previous Credit

    UPS requested that the rule include a ``Credits for Previous 
Actions'' section in this AD stating that affected engines that have 
fully incorporated prior revisions of both Pratt & Whitney SB PW4ENG 
73-223, dated February 5, 2018, and Pratt & Whitney SB PW4ENG 73-224, 
dated November 8, 2017, may take credit for the required actions. UPS 
reasoned that PW is considering publishing a revision to Pratt & 
Whitney SB PW4ENG 73-224 that will allow use of overhauled fuel supply 
manifolds.
    We disagree. We cannot give credit for previous action based on 
service bulletins that have not been published. We did not change this 
AD.

Request To Revise Compliance

    UPS commented that paragraph (g)(1) in the NPRM only referred to P/
N 51J344. UPS noted that there are other pre-SB 73-223 part numbers, 
such as P/N 51J235, that may be found installed in Talon II engines. 
UPS suggested that we revise the compliance paragraph (g)(1) in this AD 
to be similar to paragraph (g)(2) of this AD--for example, ``Replace 
the 24 fuel nozzles with part number 51J397 per Pratt & Whitney SB 
PW4ENG 73-223.''
    We agree. Fuel nozzle designs other than P/N 51J397 are also 
susceptible to braze joint cracking. We revised paragraph (g)(1) of 
this AD based on the change suggested by the commenter.

Support for the AD

    The Air Line Pilots Association International expressed support for 
the AD as written.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
this final rule with the changes described previously and minor 
editorial changes. We have determined that these minor changes:
     [Agr]re consistent with the intent that was proposed in 
the NPRM for addressing the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.
    We also determined that these changes will not increase the 
economic burden on any operator or increase the scope of this final 
rule.

Related Service Information Under 1 CFR Part 51

    We reviewed Pratt & Whitney 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 Pratt & Whitney 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.

Costs of Compliance

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

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                  Cost per        Cost on U.S.
               Action                        Labor cost          Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
Remove and replace (24) fuel nozzles  48 work-hours x $85 per     $423,471.12     $427,551.12     $48,740,827.68
                                       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 brackets.  hour = $1,360.
----------------------------------------------------------------------------------------------------------------


[[Page 11213]]

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

    This AD will not have federalism implications under Executive Order 
13132. This AD will not have a substantial direct effect on the States, 
on the relationship between the national government and the States, or 
on the distribution of power and responsibilities among the various 
levels of government.
    For the reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979),
    (3) Will not affect intrastate aviation in Alaska, and
    (4) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

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

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


Sec.  39.13  [Amended]

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

2019-06-02 Pratt & Whitney Division: Amendment 39-19600; Docket No. 
FAA-2018-0924; Product Identifier 2018-NE-34-AD.

(a) Effective Date

    This AD is effective April 30, 2019.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Pratt & Whitney Division PW4158 turbofan 
engines designated by a-3 on the Engine Data Plate and with the 
following engine serial numbers: 728534 to 728555; 728557 to 728585; 
728587 to 728591; 728593; 728598; 729808 to 729824; or 729826 to 
729864.

(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 any of the 24 fuel nozzles, part number (P/N) 51J235 
or 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 Pratt & Whitney 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) of this AD. Information may be emailed 
to: ANE-AD-AMOC@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

    For more information about this AD, 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.

(k) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (i) Pratt & Whitney Service Bulletin PW4ENG 73-224, dated 
November 8, 2017.
    (ii) [Reserved]
    (3) For Pratt & Whitney service information identified in this 
AD, contact Pratt & Whitney, 400 Main Street, East Hartford, CT 
06108; phone: 860-565-8770; fax: 860-565-4503.
    (4) 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.
    (5) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, call 202-741-6030, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.


[[Page 11214]]


    Issued in Burlington, Massachusetts, on March 19, 2019.
Karen M. Grant,
Acting Manager, Engine and Propeller Standards Branch, Aircraft 
Certification Service.
[FR Doc. 2019-05708 Filed 3-25-19; 8:45 am]
 BILLING CODE 4910-13-P
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