80 FR 32316 - Airworthiness Directives; Pratt & Whitney Turbofan Engines
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 80, Issue 109 (June 8, 2015)
Federal Aviation Administration
Federal Register Volume 80, Issue 109 (June 8, 2015)
| Page Range | 32316-32318 | |
| FR Document | 2015-13742 |
[Federal Register Volume 80, Number 109 (Monday, June 8, 2015)] [Proposed Rules] [Pages 32316-32318] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2015-13742] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2015-0869; Directorate Identifier 2015-NE-11-AD] RIN 2120-AA64 Airworthiness Directives; Pratt & Whitney 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 all Pratt & Whitney (PW) PW4164, PW4168, PW4168A, PW4164-1D, PW4168-1D, PW4168A-1D, and PW4170 turbofan engines. This proposed AD was [[Page 32317]] prompted by crack finds in the 6th stage low-pressure turbine (LPT) disk. This proposed AD would require removal of affected 6th stage LPT disks. We are proposing this AD to prevent failure of the 6th stage LPT disk, which could lead to an uncontained disk release, damage to the engine, and damage to the airplane. DATES: We must receive comments on this proposed AD by August 7, 2015. 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 proposed 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 & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125. Examining the AD Docket You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2015- 0869; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this proposed AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Office (phone: 800-647-5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Katheryn Malatek, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7747; 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 NPRM. Send your comments to an address listed under the ADDRESSES section. Include ``Docket No. FAA-2015-0869; Directorate Identifier 2015-NE-11-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 reports of two crack finds in the front and rear knife- edge seals on the forward arm of the 6th stage LPT disk during a scheduled heavy maintenance shop visit. The suspected root cause of the cracks is residual stress introduced during knife-edge weld repair. This condition, if not corrected, could result in failure of the 6th stage LPT disk, which could lead to an uncontained disk release, damage to the engine, and damage to the airplane. Related Service Information Under 1 CFR Part 51 We reviewed PW Service Bulletin No. PW4G-100-72-252, dated November 18, 2014. This service information identifies and directs removal of the suspect 6th stage LPT disks. This service information is reasonably available because the interested parties have access to it through their normal course of business or see ADDRESSES for other ways to access this service information. FAA's Determination We are proposing this NPRM 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 NPRM would require removing certain serial number 6th stage LPT disks, part number 50N886. Costs of Compliance We estimate that this proposed AD would affect 18 engines installed on airplanes of U.S. registry. We also estimate that no additional hours would be required per engine to comply with this proposed AD because the engine is already disassembled in the shop when we require the part to be removed. The average labor rate is $85 per hour. We estimate that 6 of the engines will require replacement parts during an LPT shop visit, and that the prorated replacement parts cost would be $108,800 per engine. Based on these figures, we estimate the cost of this proposed AD on U.S. operators to be $652,800. Authority for this Rulemaking Title 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII: Aviation Programs, describes in more detail the scope of the Agency's authority. We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: ``General requirements.'' Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. Regulatory Findings We determined that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would not have a substantial direct effect on the States, on the relationship between the national Government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify this proposed regulation: (1) Is not a ``significant regulatory action'' under Executive Order 12866, (2) Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska to the extent that it justifies making a regulatory distinction, 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. [[Page 32318]] 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-2015-0869; Directorate Identifier 2015-NE-11-AD. (a) Comments Due Date We must receive comments by August 7, 2015. (b) Affected ADs None. (c) Applicability This AD applies to all Pratt & Whitney (PW) PW4164, PW4168, PW4168A, PW4164-1D, PW4168-1D, PW4168A-1D, and PW4170 turbofan engines with 6th stage low-pressure turbine (LPT) disks, part number 50N886, installed. (d) Unsafe Condition This AD was prompted by crack finds in the 6th stage LPT disk. We are issuing this AD to prevent failure of the 6th stage LPT disk, which could lead to an uncontained disk release, damage to the engine, and damage to the airplane. (e) Compliance Comply with this AD within the compliance times specified, unless already done. At the next LPT shop visit after the effective date of this AD, remove from service 6th stage LPT disks with serial numbers listed in the Accomplishment Instructions, Table 1, of PW Service Bulletin (SB) No. PW4G-100-72-252, dated November 18, 2014. (f) Definition For the purpose of this AD, an ``LPT shop visit'' is defined as maintenance which involves disassembly of the LPT rotor module. (i) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. You may email your request to: [email protected]. (j) Related Information (1) For more information about this AD, contact Katheryn Malatek, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7747; fax: 781-238-7199; email: [email protected]. (2) PW SB No. PW4G-100-72-252, dated November 18, 2014, can be obtained from Pratt & Whitney using the contact information in paragraph (j)(3) of this proposed rule. (3) For service information identified in this proposed rule, contact Pratt & Whitney, 400 Main St., East Hartford, CT 06108; phone: 860-565-8770; fax: 860-565-4503. (4) You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125. Issued in Burlington, Massachusetts, on May 12, 2015. Colleen M. D'Alessandro, Assistant Directorate Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2015-13742 Filed 6-5-15; 8:45 am] BILLING CODE 4910-13-P
![32316 Federal Register / Vol. 80, No. 109 / Monday, June 8, 2015 / Proposed Rules
of U.S. registry. We also estimate that it The Proposed Amendment (f) Alternative Methods of Compliance
would take about 0.5 hours per engine (AMOCs)
to comply with this proposed AD. The Accordingly, under the authority The Manager, Engine Certification Office,
average labor rate is $85 per hour. We delegated to me by the Administrator, FAA, may approve AMOCs for this AD. Use
estimate that the pro-rated cost of the the FAA proposes to amend 14 CFR part the procedures found in 14 CFR 39.19 to
life reduction would be about $23,053 39 as follows: make your request. You may email your
per engine. Based on these figures, we request to: ANE–AD–AMOC@faa.gov.
estimate the cost of this proposed AD on PART 39—AIRWORTHINESS
(g) Related Information
U.S. operators to be $531,197. DIRECTIVES
(1) For more information about this AD,
Authority for This Rulemaking contact Philip Haberlen, Aerospace Engineer,
■ 1. The authority citation for part 39 Engine Certification Office, FAA, Engine &
Title 49 of the United States Code continues to read as follows: Propeller Directorate, 12 New England
specifies the FAA’s authority to issue Authority: 49 U.S.C. 106(g), 40113, 44701. Executive Park, Burlington, MA 01803;
rules on aviation safety. Subtitle I, phone: 781–238–7770; fax: 781–238–7199;
§ 39.13 [Amended] email: philip.haberlen@faa.gov.
section 106, describes the authority of (2) Refer to MCAI European Aviation
the FAA Administrator. ‘‘Subtitle VII: ■ 2. The FAA amends § 39.13 by adding Safety Agency AD 2015–0056, dated March
Aviation Programs,’’ describes in more the following new airworthiness 31, 2015, for more information. You may
detail the scope of the Agency’s directive (AD): examine the MCAI in the AD docket on the
authority. Internet at http://www.regulations.gov by
Rolls-Royce Deutschland Ltd & Co KG:
We are issuing this rulemaking under searching for and locating it in Docket No.
Docket No. FAA–2015–1014; Directorate
the authority described in ‘‘Subtitle VII, FAA–2015–1014.
Identifier 2015–NE–14–AD.
(3) RRD Alert NMSB No. TAY–72–A1821,
Part A, Subpart III, Section 44701:
(a) Comments Due Date Revision 1, dated March 26, 2015, can be
General requirements.’’ Under that obtained from RRD, using the contact
section, Congress charges the FAA with We must receive comments by August 7,
information in paragraph (g)(4) of this
promoting safe flight of civil aircraft in 2015.
proposed AD.
air commerce by prescribing regulations (b) Affected ADs (4) For service information identified in
for practices, methods, and procedures None.
this proposed AD, contact Rolls-Royce
the Administrator finds necessary for Deutschland Ltd & Co KG, Eschenweg 11,
safety in air commerce. This regulation (c) Applicability Dahlewitz, 15827 Blankenfelde-Mahlow,
is within the scope of that authority Germany; phone: 49 0 33–7086–1064; fax: 49
This AD applies to all Rolls-Royce
0 33–7086–3276.
because it addresses an unsafe condition Deutschland Ltd & Co KG (RRD) Tay 650–15
(5) You may view this service information
that is likely to exist or develop on and Tay 651–54 turbofan engines with high-
at the FAA, Engine & Propeller Directorate,
products identified in this rulemaking pressure turbine (HPT) stage 1 disk, part 12 New England Executive Park, Burlington,
action. number (P/N) JR32013, installed. MA. For information on the availability of
(d) Reason this material at the FAA, call 781–238–7125.
Regulatory Findings
This AD was prompted by RRD updating Issued in Burlington, Massachusetts, on
We determined that this proposed AD the life limits for certain HPT disks. We are May 12, 2015.
would not have federalism implications issuing this AD to prevent failure of the HPT Colleen M. D’Alessandro,
under Executive Order 13132. This disk, which could result in uncontained disk Assistant Directorate Manager, Engine &
proposed AD would not have a release, damage to the engine, and damage to Propeller Directorate, Aircraft Certification
substantial direct effect on the States, on the airplane. Service.
the relationship between the national [FR Doc. 2015–13743 Filed 6–5–15; 8:45 am]
(e) Actions and Compliance
Government and the States, or on the BILLING CODE 4910–13–P
distribution of power and Comply with this AD within the
responsibilities among the various compliance times specified, unless already
done.
levels of government. DEPARTMENT OF TRANSPORTATION
(1) After the effective date of this AD, use
For the reasons discussed above, I the Accomplishment Instruction, paragraph
certify this proposed regulation: 3.A.(1)(b) of RRD Alert Non-Modification Federal Aviation Administration
(1) Is not a ‘‘significant regulatory Service Bulletin (NMSB) No. TAY–72–
action’’ under Executive Order 12866, A1821, Revision 1, dated March 26, 2015 to 14 CFR Part 39
(2) Is not a ‘‘significant rule’’ under calculate the HPT stage 1 disk consumed [Docket No. FAA–2015–0869; Directorate
cyclic life of the affected engines. Identifier 2015–NE–11–AD]
the DOT Regulatory Policies and
(2) Remove the HPT stage 1 disk, P/N
Procedures (44 FR 11034, February 26, JR32013, from service within 100 flight RIN 2120–AA64
1979), cycles after the effective date of this AD or
(3) Will not affect intrastate aviation before exceeding the cyclic life limit as Airworthiness Directives; Pratt &
in Alaska to the extent that it justifies defined below, whichever occurs later: Whitney Turbofan Engines
making a regulatory distinction, and (i) For RRD Tay 650–15 engines and Flight
AGENCY: Federal Aviation
(4) Will not have a significant Plan A, the life limit is 18,900 flight cycles
since new (FCSN).
Administration (FAA), DOT.
economic impact, positive or negative,
mstockstill on DSK4VPTVN1PROD with PROPOSALS
(ii) For RRD Tay 650–15 engines and Flight ACTION: Notice of proposed rulemaking
on a substantial number of small entities (NPRM).
Plan B, the life limit is 15,500 FCSN.
under the criteria of the Regulatory
(iii) For RRD Tay 650–15 engines and
Flexibility Act. Flight Plan C, the life limit is 11,500 FCSN. SUMMARY: We propose to adopt a new
List of Subjects in 14 CFR Part 39 (iv) For RRD Tay 650–15 engines and airworthiness directive (AD) for all Pratt
Flight Plan D, the life limit is 9,300 FCSN. & Whitney (PW) PW4164, PW4168,
Air transportation, Aircraft, Aviation (v) For RRD Tay 651–54 engines regardless PW4168A, PW4164–1D, PW4168–1D,
safety, Incorporation by reference, of flight plan or profile, the life limit is PW4168A–1D, and PW4170 turbofan
Safety. 10,873 FCSN. engines. This proposed AD was
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![32318 Federal Register / Vol. 80, No. 109 / Monday, June 8, 2015 / Proposed Rules
The Proposed Amendment 01803; phone: 781–238–7747; fax: 781–238– Monday through Friday, except Federal
7199; email: katheryn.malatek@faa.gov. holidays. The telephone number is 202–
Accordingly, under the authority (2) PW SB No. PW4G–100–72–252, dated
delegated to me by the Administrator, 366–9329.
November 18, 2014, can be obtained from See the ‘‘Public Participation and
the FAA proposes to amend 14 CFR part Pratt & Whitney using the contact
39 as follows: information in paragraph (j)(3) of this Request for Comments’’ portion of the
proposed rule. SUPPLEMENTARY INFORMATION section
PART 39—AIRWORTHINESS (3) For service information identified in below for instructions on submitting
DIRECTIVES this proposed rule, contact Pratt & Whitney, comments. To avoid duplication, please
400 Main St., East Hartford, CT 06108; use only one of these four methods.
■ 1. The authority citation for part 39 phone: 860–565–8770; fax: 860–565–4503. FOR FURTHER INFORMATION CONTACT: If
continues to read as follows: (4) You may view this service information you have questions on this proposed
at the FAA, Engine & Propeller Directorate,
Authority: 49 U.S.C. 106(g), 40113, 44701. 12 New England Executive Park, Burlington, rule, call or email Petty Officer Joseph
MA. For information on the availability of McCollum, U.S. Coast Guard Sector
§ 39.13 [Amended] this material at the FAA, call 781–238–7125. Lake Michigan; telephone 414–747–
■ 2. The FAA amends § 39.13 by adding 7148, email Joseph.P.McCollum@
Issued in Burlington, Massachusetts, on
the following new airworthiness uscg.mil. If you have questions on
May 12, 2015.
directive (AD): viewing or submitting material to the
Colleen M. D’Alessandro,
Pratt & Whitney: Docket No. FAA–2015– docket, call Cheryl Collins, Program
Assistant Directorate Manager, Engine &
0869; Directorate Identifier 2015–NE– Propeller Directorate, Aircraft Certification
Manager, Docket Operations, telephone
11–AD. Service. 202–366–9826.
(a) Comments Due Date [FR Doc. 2015–13742 Filed 6–5–15; 8:45 am] SUPPLEMENTARY INFORMATION:
We must receive comments by August 7, BILLING CODE 4910–13–P Table of Acronyms
2015.
DHS Department of Homeland Security
(b) Affected ADs FR Federal Register
None. DEPARTMENT OF HOMELAND NPRM Notice of Proposed Rulemaking
SECURITY
(c) Applicability A. Public Participation and Request for
This AD applies to all Pratt & Whitney Coast Guard Comments
(PW) PW4164, PW4168, PW4168A, PW4164– We encourage you to participate in
1D, PW4168–1D, PW4168A–1D, and PW4170 33 CFR Part 165 this rulemaking by submitting
turbofan engines with 6th stage low-pressure comments and related materials. All
turbine (LPT) disks, part number 50N886, [Docket No. USCG–2015–0443]
comments received will be posted
installed. RIN 1625–AA00 without change to http://
(d) Unsafe Condition www.regulations.gov and will include
Safety Zone; Nighttime Air Show,
This AD was prompted by crack finds in any personal information you have
Milwaukee Harbor; Milwaukee,
the 6th stage LPT disk. We are issuing this provided.
AD to prevent failure of the 6th stage LPT Wisconsin
disk, which could lead to an uncontained 1. Submitting Comments
AGENCY: Coast Guard, DHS.
disk release, damage to the engine, and If you submit a comment, please
damage to the airplane. ACTION: Notice of proposed rulemaking.
include the docket number for this
(e) Compliance SUMMARY: The Coast Guard proposes to rulemaking (USCG–2015–0443),
Comply with this AD within the establish a safety zone within indicate the specific section of this
compliance times specified, unless already Milwaukee Harbor in Milwaukee, document to which each comment
done. At the next LPT shop visit after the Wisconsin. This zone is intended to applies, and provide a reason for each
effective date of this AD, remove from service restrict vessels from a portion of suggestion or recommendation. You
6th stage LPT disks with serial numbers Milwaukee Harbor due to an air show. may submit your comments and
listed in the Accomplishment Instructions, This proposed safety zone is necessary material online at http://
Table 1, of PW Service Bulletin (SB) No. to protect the surrounding public and www.regulations.gov, or by fax, mail, or
PW4G–100–72–252, dated November 18,
2014.
vessels from the hazards associated with hand delivery, but please use only one
the air show. of these means. If you submit a
(f) Definition DATES: Comments and related material comment online, it will be considered
For the purpose of this AD, an ‘‘LPT shop must be received by the Coast Guard on received by the Coast Guard when you
visit’’ is defined as maintenance which or before July 8, 2015. successfully transmit the comment. If
involves disassembly of the LPT rotor you fax, hand deliver, or mail your
ADDRESSES: You may submit comments
module. comment, it will be considered as
identified by docket number USCG–
(i) Alternative Methods of Compliance 2015–0443 using any one of the having been received by the Coast
(AMOCs) following methods: Guard when it is received at the Docket
The Manager, Engine Certification Office, (1) Federal eRulemaking Portal: Management Facility. We recommend
FAA, may approve AMOCs for this AD. Use http://www.regulations.gov. that you include your name and a
the procedures found in 14 CFR 39.19 to mailing address, an email address, or a
mstockstill on DSK4VPTVN1PROD with PROPOSALS
(2) Fax: 202–493–2251.
make your request. You may email your (3) Mail: Docket Management Facility telephone number in the body of your
request to: ANE-AD-AMOC@faa.gov. (M–30), U.S. Department of document so that we can contact you if
(j) Related Information Transportation, West Building Ground we have questions regarding your
(1) For more information about this AD, Floor, Room W12–140, 1200 New Jersey submission.
contact Katheryn Malatek, Aerospace Avenue SE., Washington, DC 20590– To submit your comment online, go to
Engineer, Engine Certification Office, FAA, 0001. http://www.regulations.gov, click on the
Engine & Propeller Directorate, 12 New (4) Delivery: Same as mail address ‘‘submit a comment’’ box, which will
England Executive Park, Burlington, MA above, between 9 a.m. and 5 p.m., then become highlighted in blue. In the
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Document Created: 2018-02-22 10:12:28
Document Modified: 2018-02-22 10:12:28
| Category | Regulatory Information | |
| Collection | Federal Register | |
| sudoc Class | AE 2.7: GS 4.107: AE 2.106: | |
| Publisher | Office of the Federal Register, National Archives and Records Administration | |
| Section | Proposed Rules | |
| Action | Notice of proposed rulemaking (NPRM). | |
| Dates | We must receive comments on this proposed AD by August 7, 2015. | |
| Contact | Katheryn Malatek, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7747; fax: 781-238-7199; email: [email protected] | |
| FR Citation | 80 FR 32316 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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