Airworthiness Directives; Pratt & Whitney Turbofan Engines, 25203-25205 [2019-11285]

Download as PDF 25203 Proposed Rules Federal Register Vol. 84, No. 105 Friday, May 31, 2019 This section of the FEDERAL REGISTER contains notices to the public of the proposed issuance of rules and regulations. The purpose of these notices is to give interested persons an opportunity to participate in the rule making prior to the adoption of the final rules. DEPARTMENT OF ENERGY 10 CFR Part 431 [EERE–2019–BT–STD–0008] Energy Conservation Program: Energy Conservation Standards for Small Electric Motors Office of Energy Efficiency and Renewable Energy, Department of Energy. ACTION: Request for information; reopening of public comment period. AGENCY: On April 9, 2019, the U.S. Department of Energy (DOE) published a request for information pertaining to the energy conservation standards for small electric motors. The notice provided an opportunity for submitting written comments, data, and information by May 24, 2019. This document reopens the comment period. DATES: The comment period for the RFI, published on April 9, 2019 (84 FR 14027), is reopened. DOE will accept written comments, data, and information in response to the RFI no later than June 7, 2019. ADDRESSES: Interested persons are encouraged to submit comments using the Federal eRulemaking Portal at https://www.regulations.gov. Follow the instructions for submitting comments. Alternatively, interested persons may submit comments, identified by docket number EERE–2019–BT–STD–0008, by any of the following methods: 1. Federal eRulemaking Portal: https:// www.regulations.gov. Follow the instructions for submitting comments. 2. Email: SmallElecMotors2019STD0008@ ee.doe.gov. Include the docket number EERE–2019–BT–STD–0008 in the subject line of the message. 3. Postal Mail: Appliance and Equipment Standards Program, U.S. Department of Energy, Building Technologies Office, Mailstop EE–5B, 1000 Independence Avenue SW, Washington, DC 20585–0121. Telephone: (202) 287–1445. If possible, khammond on DSKBBV9HB2PROD with PROPOSALS SUMMARY: VerDate Sep<11>2014 16:12 May 30, 2019 Jkt 247001 please submit all items on a compact disc (‘‘CD’’), in which case it is not necessary to include printed copies. 4. Hand Delivery/Courier: Appliance and Equipment Standards Program, U.S. Department of Energy, Building Technologies Office, 950 L’Enfant Plaza, SW, 6th Floor, Washington, DC 20024. Telephone: (202) 287–1445. If possible, please submit all items on a CD, in which case it is not necessary to include printed copies. No telefacsimilies (faxes) will be accepted. Docket: The docket for this activity, which includes Federal Register notices, comments, and other supporting documents/materials, is available for review at https:// www.regulations.gov. All documents in the docket are listed in the https:// www.regulations.gov index. However, some documents listed in the index, such as those containing information that is exempt from public disclosure, may not be publicly available. The docket web page can be found at https://www.regulations.gov/ docket?D=EERE-2019-BT-STD-0008. The docket web page contains instructions on how to access all documents, including public comments, in the docket. FOR FURTHER INFORMATION CONTACT: Jeremy Dommu, U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Building Technologies Office, EE–5B, 1000 Independence Avenue SW, Washington, DC 20585–0121. Telephone: (202) 586– 9870. Email: ApplianceStandardsQuestions@ ee.doe.gov. Michael Kido, U.S. Department of Energy, Office of the General Counsel, GC–33, 1000 Independence Avenue SW, Washington, DC 20585–0121. Telephone: (202) 586–8145. Email: Michael.Kido@hq.doe.gov. For further information on how to submit a comment, or review other public comments and the docket contact the Appliance and Equipment Standards Program staff at (202) 287– 1445 or by email: ApplianceStandardsQuestions@ ee.doe.gov. SUPPLEMENTARY INFORMATION: DOE published a Request for Information (‘‘RFI’’) pertaining to the energy conservation standards for small electric motors on April 9, 2019. 84 FR 14027. PO 00000 Frm 00001 Fmt 4702 Sfmt 4702 The RFI initiated a data collection process to consider whether to amend DOE’s energy conservation standards for small electric motors, and whether amending the standards for small electric motors would result in significant energy savings and be technologically feasible and economically justified. DOE requested written comment, data, and information pertaining to these standards by May 24, 2019. On May 22, 2019, the National Electrical Manufacturers Association (‘‘NEMA’’), an interested party in the matter, requested a one-week extension of the public comment period for the RFI that DOE previously published in the Federal Register on April 9, 2019. (NEMA, EERE–2019–BT–STD–0008, No. 4) The comment period for the RFI closed on May 24, 2019.1 DOE has determined that a reopening of the comment period to allow additional time for interested parties to submit comments is appropriate. Therefore, DOE is reopening the comment period and will accept comments until June 7, 2019, to provide interested parties additional time to prepare and submit comments. Accordingly, DOE will consider any comments received by this date, to be timely submitted. Signed in Washington, DC, on May 23, 2019. Steven Chalk, Acting Deputy Assistant Secretary for Energy Efficiency, Energy Efficiency and Renewable Energy. [FR Doc. 2019–11390 Filed 5–30–19; 8:45 am] BILLING CODE 6450–01–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2019–0365; Product Identifier 2019–NE–12–AD] RIN 2120–AA64 Airworthiness Directives; Pratt & Whitney Turbofan Engines Federal Aviation Administration (FAA), DOT. AGENCY: 1 Available at https://www.regulations.gov/ document?D=EERE-2019-BT-STD-0008-0004. E:\FR\FM\31MYP1.SGM 31MYP1 25204 Federal Register / Vol. 84, No. 105 / Friday, May 31, 2019 / Proposed Rules ACTION: Notice of proposed rulemaking (NPRM). information on the availability of this material at the FAA, call 781–238–7759. The FAA proposes to adopt a new airworthiness directive (AD) for all Pratt & Whitney (PW) PW1519G, PW1521G, PW1521GA, PW1524G, PW1525G, PW1521G–3, PW1524G–3, PW1525G–3, PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G–A model turbofan engines. This proposed AD was prompted by corrosion found on the high-pressure compressor (HPC) front hub, which could result in certain HPC front hubs cracking before reaching their published life limit. This proposed AD would require revisions to the Airworthiness Limitations Section (ALS) of the manufacturer’s Instructions for Continued Airworthiness (ICA) and air carrier’s approved Continued Airworthiness Maintenance Programs (CAMP) to incorporate new or more restrictive airworthiness limitations. The FAA is proposing this AD to address the unsafe condition on these products. DATES: The FAA must receive comments on this proposed AD by July 15, 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. • 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 06118; phone: 800–565–0140; fax: 860– 565–5442; email: help24@pw.utc.com; internet: https://fleetcare.pw.utc.com. You may view this service information at the FAA, Engine and Propeller Standards Branch, 1200 District Avenue, Burlington, MA 01803. For 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–2019– 0365; 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 street address for Docket Operations 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: SUMMARY: Comments Invited The FAA invites 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–2019–0365; Product Identifier 2019–NE–12–AD’’ at the beginning of your comments. The FAA specifically invites comments on the overall regulatory, economic, environmental, and energy aspects of this NPRM. The FAA will consider all comments received by the closing date and may amend this NPRM because of those comments. The FAA will post all comments received, without change, to https:// www.regulations.gov, including any personal information you provide. The FAA will also post a report summarizing each substantive verbal contact received about this NPRM. Discussion The FAA was notified that corrosion was found on an HPC front hub during a routine engine overhaul. This corrosion, also found beneath the anticorrosion coating, reduces the low-cycle fatigue capability and can occur even during engine downtime. As a result, PW decreased the certified life of the affected HPC front hub. This condition, if not addressed, could result in uncontained HPC front hub release, damage to the engine, and damage to the airplane. Related Service Information Under 1 CFR Part 51 The FAA reviewed PW Service Bulletin (SB) PW1000G–A–72–00– 0109–00A–930A–D, Issue No. 001, dated April 2, 2019 (‘‘PW SB PW1000G– A–72–00–0109–00A–930A–D’’), and PW SB PW1000G–A–72–00–0058–00B– 930A–D, Issue No. 002, dated May 10, 2019 (‘‘PW SB PW1000G–A–72–00– 0058–00B–930A–D’’). PW SB PW1000G–A–72–00–0109–00A–930A– D describes the revised maximum cycle limits of the HPC front hub for PW PW1500G engines. PW SB PW1000G– A–72–00–0058–00B–930A–D describes the revised maximum cycle limits of the HPC front hub for PW PW1900 engines. This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section. FAA’s Determination The FAA is proposing this AD because it 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 revisions to the ALS of the manufacturer’s ICA and air carrier’s approved CAMP to incorporate revised airworthiness limitations. Costs of Compliance The FAA estimates that this proposed AD affects 18 engines installed on airplanes of U.S. registry. The FAA estimates the following costs to comply with this proposed AD: khammond on DSKBBV9HB2PROD with PROPOSALS ESTIMATED COSTS Action Labor cost Revise the ALS and CAMP ............................ 1 work-hour × $85 per hour = $85 ................. Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, VerDate Sep<11>2014 16:12 May 30, 2019 Jkt 247001 section 106, describes the authority of the FAA Administrator. Subtitle VII: Aviation Programs, describes in more PO 00000 Frm 00002 Fmt 4702 Sfmt 4702 Cost per product Parts cost $0 $85 Cost on U.S. operators $1,530 detail the scope of the Agency’s authority. The FAA is issuing this rulemaking under the authority described in E:\FR\FM\31MYP1.SGM 31MYP1 Federal Register / Vol. 84, No. 105 / Friday, May 31, 2019 / Proposed Rules 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 The FAA 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) Will not affect intrastate aviation in Alaska, and (3) 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. khammond on DSKBBV9HB2PROD with PROPOSALS 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. VerDate Sep<11>2014 16:12 May 30, 2019 Jkt 247001 § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): ■ Pratt & Whitney: Docket No. FAA–2019– 0365; Product Identifier 2019–NE–12– AD. (a) Comments Due Date The FAA must receive comments by July 15, 2019. (b) Affected ADs None. (c) Applicability This AD applies to Pratt & Whitney (PW) PW1519G, PW1521G, PW1521GA, PW1524G, PW1525G, PW1521G–3, PW1524G–3, PW1525G–3, PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G–A model turbofan engines. (d) Subject Joint Aircraft System Component (JASC) Code 7230, Turbine Engine Compressor Section. (e) Unsafe Condition This AD was prompted by corrosion found on the high-pressure compressor (HPC) front hub, which could result in certain HPC front hubs cracking before reaching their published life limit. The FAA is issuing this AD to prevent failure of the HPC front hub. The unsafe condition, if not addressed, could result in uncontained HPC front hub release, 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 Action Within 90 days after the effective date of this AD, revise the Airworthiness Limitations Section of the PW Instructions for Continued Airworthiness, and for air carrier operations, the approved continuous airworthiness maintenance program, with the following maximum cycle limits for HPC front hub, part number 30G3210. (1) For PW PW1519G, PW1521G, PW1521GA, PW1524G, PW1525G, PW1521G–3, PW1524G–3, and PW1525G–3 model turbofan engines, use the cycle limits established in Table 3, Revision to Table of Limits, of PW Service Bulletin (SB) PW1000G–A–72–00–0109–00A–930A–D, Issue No. 001, dated April 2, 2019. (2) For PW PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G–A model turbofan engines, use the cycle limits established in Table 3, Revision to Table of Limits, of PW SB PW1000G–A–72–00–0058– 00B–930A–D, Issue No. 002, dated May 10, 2019. (h) 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, PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 25205 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 (i)(1) of this AD. You may email your request 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. (i) Related Information (1) For more information about this AD, 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. (2) For service information identified in this AD, contact Pratt & Whitney, 400 Main Street, East Hartford, CT 06118; phone: 800– 565–0140; fax: 860–565–5442; email: help24@pw.utc.com; internet: https:// fleetcare.pw.utc.com. You may view this referenced 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 May 24, 2019. Karen M. Grant, Acting Manager, Engine & Propeller Standards Branch, Aircraft Certification Service. [FR Doc. 2019–11285 Filed 5–30–19; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 71 [Docket No. FAA–2018–1002; Airspace Docket No. 18–AWP–23] RIN 2120–AA66 Amendment of Class E Airspace; Madera, CA Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: This action proposes to modify the Class E airspace extending upward from 700 feet above the surface at Madera Municipal Airport, Madera, CA, eliminate references to the Clovis and Friant Very High Frequency OmniDirectional Range/Tactical Air Navigation Aids (VORTAC), and update the airports geographic coordinates to match the FAA’s current aeronautical database. In addition, this action would update the airspace lateral dimensions to meet current requirements by SUMMARY: E:\FR\FM\31MYP1.SGM 31MYP1

Agencies

[Federal Register Volume 84, Number 105 (Friday, May 31, 2019)]
[Proposed Rules]
[Pages 25203-25205]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2019-11285]


=======================================================================
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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2019-0365; Product Identifier 2019-NE-12-AD]
RIN 2120-AA64


Airworthiness Directives; Pratt & Whitney Turbofan Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

[[Page 25204]]


ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for all Pratt & Whitney (PW) PW1519G, PW1521G, PW1521GA, PW1524G, 
PW1525G, PW1521G-3, PW1524G-3, PW1525G-3, PW1919G, PW1921G, PW1922G, 
PW1923G, and PW1923G-A model turbofan engines. This proposed AD was 
prompted by corrosion found on the high-pressure compressor (HPC) front 
hub, which could result in certain HPC front hubs cracking before 
reaching their published life limit. This proposed AD would require 
revisions to the Airworthiness Limitations Section (ALS) of the 
manufacturer's Instructions for Continued Airworthiness (ICA) and air 
carrier's approved Continued Airworthiness Maintenance Programs (CAMP) 
to incorporate new or more restrictive airworthiness limitations. The 
FAA is proposing this AD to address the unsafe condition on these 
products.

DATES: The FAA must receive comments on this proposed AD by July 15, 
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.
     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 06118; phone: 800-565-0140; 
fax: 860-565-5442; email: [email protected]; internet: https://fleetcare.pw.utc.com. 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 https://www.regulations.gov by searching for and locating Docket No. FAA-2019-
0365; 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 street address for Docket Operations 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: [email protected].

SUPPLEMENTARY INFORMATION:

Comments Invited

    The FAA invites 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-2019-0365; 
Product Identifier 2019-NE-12-AD'' at the beginning of your comments. 
The FAA specifically invites comments on the overall regulatory, 
economic, environmental, and energy aspects of this NPRM. The FAA will 
consider all comments received by the closing date and may amend this 
NPRM because of those comments.
    The FAA will post all comments received, without change, to https://www.regulations.gov, including any personal information you provide. 
The FAA will also post a report summarizing each substantive verbal 
contact received about this NPRM.

Discussion

    The FAA was notified that corrosion was found on an HPC front hub 
during a routine engine overhaul. This corrosion, also found beneath 
the anti-corrosion coating, reduces the low-cycle fatigue capability 
and can occur even during engine downtime. As a result, PW decreased 
the certified life of the affected HPC front hub. This condition, if 
not addressed, could result in uncontained HPC front hub release, 
damage to the engine, and damage to the airplane.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed PW Service Bulletin (SB) PW1000G-A-72-00-0109-00A-
930A-D, Issue No. 001, dated April 2, 2019 (``PW SB PW1000G-A-72-00-
0109-00A-930A-D''), and PW SB PW1000G-A-72-00-0058-00B-930A-D, Issue 
No. 002, dated May 10, 2019 (``PW SB PW1000G-A-72-00-0058-00B-930A-
D''). PW SB PW1000G-A-72-00-0109-00A-930A-D describes the revised 
maximum cycle limits of the HPC front hub for PW PW1500G engines. PW SB 
PW1000G-A-72-00-0058-00B-930A-D describes the revised maximum cycle 
limits of the HPC front hub for PW PW1900 engines. This service 
information is reasonably available because the interested parties have 
access to it through their normal course of business or by the means 
identified in the ADDRESSES section.

FAA's Determination

    The FAA is proposing this AD because it 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 revisions to the ALS of the 
manufacturer's ICA and air carrier's approved CAMP to incorporate 
revised airworthiness limitations.

Costs of Compliance

    The FAA estimates that this proposed AD affects 18 engines 
installed on airplanes of U.S. registry.
    The FAA estimates the following costs to comply with this proposed 
AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Revise the ALS and CAMP...............  1 work-hour x $85 per                 $0             $85          $1,530
                                         hour = $85.
----------------------------------------------------------------------------------------------------------------

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.
    The FAA is issuing this rulemaking under the authority described in

[[Page 25205]]

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

    The FAA 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) Will not affect intrastate aviation in Alaska, and
    (3) 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: Docket No. FAA-2019-0365; Product Identifier 2019-
NE-12-AD.

(a) Comments Due Date

    The FAA must receive comments by July 15, 2019.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Pratt & Whitney (PW) PW1519G, PW1521G, 
PW1521GA, PW1524G, PW1525G, PW1521G-3, PW1524G-3, PW1525G-3, 
PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G-A model turbofan 
engines.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7230, Turbine Engine 
Compressor Section.

(e) Unsafe Condition

    This AD was prompted by corrosion found on the high-pressure 
compressor (HPC) front hub, which could result in certain HPC front 
hubs cracking before reaching their published life limit. The FAA is 
issuing this AD to prevent failure of the HPC front hub. The unsafe 
condition, if not addressed, could result in uncontained HPC front 
hub release, 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 Action

    Within 90 days after the effective date of this AD, revise the 
Airworthiness Limitations Section of the PW Instructions for 
Continued Airworthiness, and for air carrier operations, the 
approved continuous airworthiness maintenance program, with the 
following maximum cycle limits for HPC front hub, part number 
30G3210.
    (1) For PW PW1519G, PW1521G, PW1521GA, PW1524G, PW1525G, 
PW1521G-3, PW1524G-3, and PW1525G-3 model turbofan engines, use the 
cycle limits established in Table 3, Revision to Table of Limits, of 
PW Service Bulletin (SB) PW1000G-A-72-00-0109-00A-930A-D, Issue No. 
001, dated April 2, 2019.
    (2) For PW PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G-A 
model turbofan engines, use the cycle limits established in Table 3, 
Revision to Table of Limits, of PW SB PW1000G-A-72-00-0058-00B-930A-
D, Issue No. 002, dated May 10, 2019.

(h) 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 (i)(1) of this AD. You may email your 
request 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.

(i) Related Information

    (1) For more information about this AD, contact Kevin M. Clark, 
Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, 
Burlington, MA 01803; phone: 781-238-7088; fax: 781-238-7199; email: 
[email protected].
    (2) For service information identified in this AD, contact Pratt 
& Whitney, 400 Main Street, East Hartford, CT 06118; phone: 800-565-
0140; fax: 860-565-5442; email: [email protected]; internet: https://fleetcare.pw.utc.com. You may view this referenced 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 May 24, 2019.
Karen M. Grant,
Acting Manager, Engine & Propeller Standards Branch, Aircraft 
Certification Service.
[FR Doc. 2019-11285 Filed 5-30-19; 8:45 am]
BILLING CODE 4910-13-P

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