82 FR 13059 - Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 82, Issue 45 (March 9, 2017)
Federal Aviation Administration
Federal Register Volume 82, Issue 45 (March 9, 2017)
| Page Range | 13059-13062 | |
| FR Document | 2017-04627 |
[Federal Register Volume 82, Number 45 (Thursday, March 9, 2017)] [Rules and Regulations] [Pages 13059-13062] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2017-04627] ======================================================================== Rules and Regulations Federal Register ________________________________________________________________________ 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. ======================================================================== Federal Register / Vol. 82, No. 45 / Thursday, March 9, 2017 / Rules and Regulations [[Page 13059]] DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2016-8836; Directorate Identifier 2016-NE-17-AD; Amendment 39-18815; AD 2017-05-05] 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 all Pratt & Whitney Division (PW) PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 turbofan engines. This AD was prompted by an uncontained failure of a high-pressure turbine (HPT) hub during takeoff. This AD requires an inspection to measure the surface condition of the aft side web/rim fillet of HPT 1st stage hubs and removal from service of hubs that fail inspection. We are issuing this AD to correct the unsafe condition on these products. DATES: This AD is effective April 13, 2017. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of April 13, 2017. ADDRESSES: For service information identified in this final rule, contact Pratt & Whitney Division, 400 Main St., East Hartford, CT 06118; phone: 800-565-0140; fax: 860-565-5442. You may view this service information at the FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125. It is also available on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2016-8836. 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-2016- 8836; 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 AD, the regulatory evaluation, any comments received, and other information. The address for the Docket Office (phone: 800-647- 5527) is Document Management Facility, 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: Jo-Ann Theriault, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7105; fax: 781- 238-7199; email: [email protected]. 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 PW PW4074, PW4074D, PW4077, PW4077D, PW4084, PW4084D, PW4090, and PW4090-3 turbofan engines. The NPRM published in the Federal Register on October 26, 2016 (81 FR 74358). The NPRM was prompted by an uncontained failure of an HPT hub during takeoff. The NPRM proposed to require an inspection to measure the surface condition of the aft side web/rim fillet of HPT 1st stage hubs and removal from service of hubs that fail inspection. We are issuing this AD to prevent failure of the HPT 1st stage hub, uncontained hub release, damage to the engine, and damage to the airplane. Comments We gave the public the opportunity to participate in developing this AD. The following presents the comments received on the NPRM and the FAA's response to each comment. Request for Previous Credit All Nippon Airways (ANA), Japan Airlines (JAL), PW, and United Airlines (UAL) requested that we give credit for hubs inspected per PW Special Instruction (SI) No. 250F-16, dated June 22, 2016 or PW SI No. 250F-16, Revision A, dated July 14, 2016. We agree. We added a Credit for Previous Actions paragraph to give credit for inspections accomplished per these SIs. Request To Provide Risk Analysis ANA requested that information related to the risk analysis and likelihood of failure that provided the basis of this AD be added to the compliance section of this AD. ANA noted that the root cause of this event is a machining anomaly and it would like to see the FAA's estimate on how a machining anomaly could lead to uncontained failure of the HPT hub. We disagree. The purpose of the compliance section of an AD is to provide the necessary actions needed to provide an acceptable level of safety. The FAA does not typically provide risk assessments in an AD as this information is often, as is the case with this AD, considered proprietary. FAA's general methodology for risk analysis can be found in FAA AC 39-8, ``Continued Airworthiness Assessments of Powerplant and Auxiliary Power Unit Installations of Transport Category Airplanes.'' We did not change this AD. Request To Confirm Definition ANA requested that we confirm that replacement of the main gearbox or angle gearbox is not defined as a major flange separation, which is the basis for an ``engine shop visit,'' as defined in the NPRM (81 FR 74358, October 26, 2016). We agree. Replacement of the main gearbox or angle gearbox replacement does not require major flange separation and does not constitute an ``engine shop visit.'' We note, however, that this AD no longer requires inspections at engine shop visits and we removed this definition from this AD. Request To Remove New HPT Hubs From Inspection Requirements ANA, JAL, and PW requested that paragraph (e) of this AD not require inspection for new HPT 1st stage hubs. These hubs include HPT 1st stage hubs marked with detail revision number part number (P/N) 55L901 Rev B or P/N 55L801 Rev E, or subsequent revision letters. The commenters indicated that per PW Service Bulletin (SB) PW4G-112-72-342, dated September 23, 2016, HPT hubs marked with these detail [[Page 13060]] revision numbers do not need to be inspected because of improvements to PW's inspection program. We disagree. The root cause of the HPT hub failure is a machining anomaly in the aft web/rim fillet area of the HPT 1st stage hub. Although manufacturing changes are being made to reduce the chance of this defect occurring, these changes have not been fully implemented. New production parts, therefore, are still susceptible to this defect. We did not change this AD. Request To Revise Compliance Time for Previously-Inspected Hubs ANA requested that for hubs that have been previously inspected, but not marked, the compliance should be at the next piece-part exposure rather than at next engine shop visit. ANA indicated that PW SI No. 250F-16, dated June 22, 2016, and PW SI No. 250F-16, Revision A, dated July 14, 2016, do not require marking of the hubs after inspection. Part A, paragraph 2.C., and Part B, paragraph 1.C. of PW SB PW4G-112-72-342, dated September 23, 2016, however, require marking the parts after inspection. ANA indicated that it has some parts that have been inspected but not marked. ANA commented that the inspection interval for HPT 1st stage hubs that have already been inspected should be at the next piece-part exposure. We disagree. This AD requires a one-time replication inspection of HPT 1st stage hubs for machining mismatch in the aft web/rim fillet. Hubs that have passed this inspection do not require re-inspection. For those parts that were inspected using PW SI No. 250F-16, dated June 22, 2016, or PW SI No. 250F-16, Revision A, dated July 14, 2016, we are providing credit for that inspection provided the hubs passed the inspection. We did not change this AD based on this comment. Request To Limit Applicability by Serial Number UAL requested that a list of affected serial numbers be added to the applicability section of this AD. UAL commented that the part revision letter markings can wear over time and that revision numbers are not listed on the FAA Form 8130. We disagree. This AD applies to all PW PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 turbofan engines. The applicability of this AD is not limited by part or serial number. We did not change this AD. Request To Mark HPT Hubs That Have Passed Inspection PW requested that the PW SB PW4G-112-72-342, dated September 23, 2016, be marked on HPT 1st stage hubs that pass the inspection required by this AD. This would make the AD consistent with this SB, which instructs operators to mark the SB number on the front turbine hub assembly. We disagree. This AD requires hub inspections but does not require specific part markings or record-keeping procedures. If operators can show that hubs have been previously inspected and passed this inspection, then they have complied with this AD. Each operator has the responsibility to establish its own record-keeping procedures. We did not change this AD. Request To Define Compliance by Engine Model UAL requested that the compliance section of this AD identify that the Accomplishment Instructions, Part A, of PW SB PW4G-112-72-342, dated September 23, 2016, apply to PW4074D, PW4077D, PW4084D, PW4090, and PW4090-3 engine models and the Accomplishment Instructions, Part B, of this SB apply only to PW4074 and PW4077 engine models. We agree. We determined that revising the compliance requirements to make these specific to each group of engine models will make them clearer to the operators. We revised the compliance section of this AD to clarify that Part A of the Accomplishment Instructions is used to do the inspection for PW4074D, PW4077D, PW4084D, PW4090, and PW4090-3 engine models, while Part B is used for PW4074 and PW4077 engine models. Request To Revise Compliance Schedule PW, UAL, and JAL requested that we revise the compliance schedule to match the requirements of PW SB PW4G-112-72-342, dated September 23, 2016. PW indicated that the compliance schedule in this SB has been validated by a PW risk assessment. UAL indicated there are instances when an engine major mating flange is separated only to address a different engine module and the HPT is not exposed during these times. We agree. We find that the compliance intervals suggested by the commenters still maintain an acceptable level of safety. We changed this AD by revising the time to perform the inspection from at the ``next engine shop visit'' to either the ``next time the engine is disassembled sufficiently to expose the HPT module'' (for PW4074D, PW4077D, PW4084D, PW4090, and PW4090-3 models) or the ``next time the HPT module is disassembled sufficiently to expose the HPT 1st stage hub'' (for PW4074 and PW4077 models). Support for the NPRM The National Transportation Safety Board commented that it supports the proposed rule as written. Revision to Applicability We revised the applicability section of this AD by removing the PW4084 model engine. Although this engine is listed on Type Certificate Data Sheet No. E46NE, Revision 8, dated January 23, 2012, it was never produced. Conclusion We reviewed the relevant data, considered the comments received, and determined that air safety and the public interest require adopting this AD 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 correcting 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 AD. Related Service Information Under 1 CFR Part 51 We reviewed PW SB PW4G-112-72-342, dated September 23, 2016. This PW SB provides guidance on performing the HPT 1st stage hub web/rim fillet replication inspection and measurement for the affected HPT hubs. 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 also reviewed PW SI No. 250F-16, dated June 22, 2016, and PW SI No. 250F-16, Revision A, dated July 14, 2016. These SIs provide guidance on performing the replication inspection of the HPT 1st stage hub. Costs of Compliance We estimate that this AD affects 119 engines installed on airplanes of U.S. registry. We estimate the following costs to comply with this AD: [[Page 13061]] Estimated Costs ---------------------------------------------------------------------------------------------------------------- Cost per Cost on U.S. Action Labor cost Parts cost product operators ---------------------------------------------------------------------------------------------------------------- Inspection........................ 1 work-hour x $85 per $0 $85 $10,115 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. 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 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 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. 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): 2017-05-05 Pratt & Whitney Division: Amendment 39-18815; Docket No. FAA-2016-8836; Directorate Identifier 2016-NE-17-AD. (a) Effective Date This AD is effective April 13, 2017. (b) Affected ADs None. (c) Applicability This AD applies to all Pratt & Whitney Division (PW) PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 turbofan engines. (d) Unsafe Condition This AD was prompted by an uncontained failure of a high- pressure turbine (HPT) hub during takeoff. We are issuing this AD to prevent failure of the HPT 1st stage hub, uncontained hub release, damage to the engine, and damage to the airplane. (e) Compliance Comply with this AD within the compliance times specified, unless already done. (1) After the effective date of this AD, perform the HPT 1st stage hub web/rim fillet replication inspection and measurement as follows: (i) For PW4074D, PW4077D, PW4084D, PW4090, and PW4090-3 engine models, the next time the engine is disassembled sufficiently to expose the HPT module, use the Accomplishment Instructions, Part A, paragraphs 2.A. and 2.B.(1) through 2.B.(4) of PW Service Bulletin (SB) PW4G-112-72-342, dated September 23, 2016, to do the inspection. (ii) For PW4074 and PW4077 engine models, the next time the HPT module is disassembled sufficiently to expose the HPT 1st stage hub, use the Accomplishment Instructions Part B, paragraphs 1.A. and 1.B.(1) through 1.B.(4) of PW SB PW4G-112-72-342, dated September 23, 2016, to do the inspection. (2) If the hub fails the inspection, remove the hub from service before further flight and replace with a part eligible for installation. (f) Installation Prohibition After the effective date of this AD, do not install, or re- install into any engine, any HPT 1st stage hub that has not been inspected and passed the inspection required by paragraph (e) of this AD. (g) Credit for Previous Actions You may take credit for the replication inspection of the HPT 1st stage hub that is required by paragraph (e)(1) of this AD, if you performed the inspection before the effective date of this AD using PW Special Instruction (SI) No. 250F-16, dated June 22, 2016, or PW SI No. 250F-16, Revision A, dated July 14, 2016. (h) 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]. (i) Related Information (1) For more information about this AD, contact Jo-Ann Theriault, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7105; fax: 781-238-7199; email: [email protected]. (2) PW SI No. 250F-16, dated June 22, 2016, and PW SI No. 250F- 16, Revision A, dated July 14, 2016, which are not incorporated by reference, can be obtained from PW using the contact information in paragraph (j)(3) of this AD. (j) 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 Division Service Bulletin PW4G-112-72-342, dated September 23, 2016. (ii) Reserved. (3) For PW service information identified in this AD, contact Pratt & Whitney Division, 400 Main St., East Hartford, CT 06118; phone: 800-565-0140; fax: 860-565-5442. (4) You may view this service information at the FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125. (5) You may view this service information 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: http:// [[Page 13062]] www.archives.gov/federal-register/cfr/ibr-locations.html. Issued in Burlington, Massachusetts, on February 27, 2017. Robert J. Ganley, Acting Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2017-04627 Filed 3-8-17; 8:45 am] BILLING CODE 4910-13-P
![13059
Rules and Regulations Federal Register
Vol. 82, No. 45
Thursday, March 9, 2017
This section of the FEDERAL REGISTER Examining the AD Docket Instruction (SI) No. 250F–16, dated June
contains regulatory documents having general
You may examine the AD docket on 22, 2016 or PW SI No. 250F–16,
applicability and legal effect, most of which Revision A, dated July 14, 2016.
are keyed to and codified in the Code of the Internet at http://
www.regulations.gov by searching for We agree. We added a Credit for
Federal Regulations, which is published under Previous Actions paragraph to give
50 titles pursuant to 44 U.S.C. 1510. and locating Docket No. FAA–2016–
8836; or in person at the Docket credit for inspections accomplished per
The Code of Federal Regulations is sold by Management Facility between 9 a.m. these SIs.
the Superintendent of Documents. and 5 p.m., Monday through Friday, Request To Provide Risk Analysis
except Federal holidays. The AD docket ANA requested that information
contains this AD, the regulatory related to the risk analysis and
DEPARTMENT OF TRANSPORTATION
evaluation, any comments received, and likelihood of failure that provided the
Federal Aviation Administration other information. The address for the basis of this AD be added to the
Docket Office (phone: 800–647–5527) is compliance section of this AD. ANA
14 CFR Part 39 Document Management Facility, U.S. noted that the root cause of this event
Department of Transportation, Docket is a machining anomaly and it would
[Docket No. FAA–2016–8836; Directorate Operations, M–30, West Building
Identifier 2016–NE–17–AD; Amendment 39– like to see the FAA’s estimate on how
Ground Floor, Room W12–140, 1200 a machining anomaly could lead to
18815; AD 2017–05–05]
New Jersey Avenue SE., Washington, uncontained failure of the HPT hub.
RIN 2120–AA64 DC 20590. We disagree. The purpose of the
FOR FURTHER INFORMATION CONTACT: Jo- compliance section of an AD is to
Airworthiness Directives; Pratt & Ann Theriault, Aerospace Engineer, provide the necessary actions needed to
Whitney Division Turbofan Engines Engine Certification Office, FAA, Engine provide an acceptable level of safety.
AGENCY: Federal Aviation & Propeller Directorate, 1200 District The FAA does not typically provide risk
Administration (FAA), DOT. Avenue, Burlington, MA 01803; phone: assessments in an AD as this
ACTION: Final rule.
781–238–7105; fax: 781–238–7199; information is often, as is the case with
email: jo-ann.theriault@faa.gov. this AD, considered proprietary. FAA’s
SUMMARY: We are adopting a new SUPPLEMENTARY INFORMATION: general methodology for risk analysis
airworthiness directive (AD) for all Pratt can be found in FAA AC 39–8,
Discussion ‘‘Continued Airworthiness Assessments
& Whitney Division (PW) PW4074,
PW4074D, PW4077, PW4077D, We issued a notice of proposed of Powerplant and Auxiliary Power Unit
PW4084D, PW4090, and PW4090–3 rulemaking (NPRM) to amend 14 CFR Installations of Transport Category
turbofan engines. This AD was part 39 by adding an AD that would Airplanes.’’ We did not change this AD.
prompted by an uncontained failure of apply to PW PW4074, PW4074D,
PW4077, PW4077D, PW4084, Request To Confirm Definition
a high-pressure turbine (HPT) hub
during takeoff. This AD requires an PW4084D, PW4090, and PW4090–3 ANA requested that we confirm that
inspection to measure the surface turbofan engines. The NPRM published replacement of the main gearbox or
condition of the aft side web/rim fillet in the Federal Register on October 26, angle gearbox is not defined as a major
of HPT 1st stage hubs and removal from 2016 (81 FR 74358). The NPRM was flange separation, which is the basis for
service of hubs that fail inspection. We prompted by an uncontained failure of an ‘‘engine shop visit,’’ as defined in the
are issuing this AD to correct the unsafe an HPT hub during takeoff. The NPRM NPRM (81 FR 74358, October 26, 2016).
condition on these products. proposed to require an inspection to We agree. Replacement of the main
measure the surface condition of the aft gearbox or angle gearbox replacement
DATES: This AD is effective April 13,
side web/rim fillet of HPT 1st stage hubs does not require major flange separation
2017. and does not constitute an ‘‘engine shop
The Director of the Federal Register and removal from service of hubs that
fail inspection. We are issuing this AD visit.’’ We note, however, that this AD
approved the incorporation by reference no longer requires inspections at engine
of a certain publication listed in this AD to prevent failure of the HPT 1st stage
hub, uncontained hub release, damage shop visits and we removed this
as of April 13, 2017. definition from this AD.
to the engine, and damage to the
ADDRESSES: For service information airplane.
identified in this final rule, contact Pratt Request To Remove New HPT Hubs
& Whitney Division, 400 Main St., East Comments From Inspection Requirements
Hartford, CT 06118; phone: 800–565– We gave the public the opportunity to ANA, JAL, and PW requested that
0140; fax: 860–565–5442. You may view participate in developing this AD. The paragraph (e) of this AD not require
this service information at the FAA, following presents the comments inspection for new HPT 1st stage hubs.
Engine & Propeller Directorate, 1200 received on the NPRM and the FAA’s These hubs include HPT 1st stage hubs
jstallworth on DSK7TPTVN1PROD with RULES
District Avenue, Burlington, MA. For response to each comment. marked with detail revision number part
information on the availability of this number (P/N) 55L901 Rev B or P/N
material at the FAA, call 781–238–7125. Request for Previous Credit 55L801 Rev E, or subsequent revision
It is also available on the internet at All Nippon Airways (ANA), Japan letters. The commenters indicated that
http://www.regulations.gov by searching Airlines (JAL), PW, and United Airlines per PW Service Bulletin (SB) PW4G–
for and locating Docket No. FAA–2016– (UAL) requested that we give credit for 112–72–342, dated September 23, 2016,
8836. hubs inspected per PW Special HPT hubs marked with these detail
VerDate Sep<11>2014 14:49 Mar 08, 2017 Jkt 241001 PO 00000 Frm 00001 Fmt 4700 Sfmt 4700 E:\FR\FM\09MRR1.SGM 09MRR1](https://thefederalregister.org/doc/82_FR_13104/page/1.svg)
![Federal Register / Vol. 82, No. 45 / Thursday, March 9, 2017 / Rules and Regulations 13061
ESTIMATED COSTS
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
Inspection ................................ 1 work-hour × $85 per hour = $85 ......................................... $0 $85 $10,115
Authority for This Rulemaking PART 39—AIRWORTHINESS (f) Installation Prohibition
Title 49 of the United States Code DIRECTIVES After the effective date of this AD, do not
specifies the FAA’s authority to issue install, or re-install into any engine, any HPT
rules on aviation safety. Subtitle I, ■ 1. The authority citation for part 39 1st stage hub that has not been inspected and
continues to read as follows: passed the inspection required by paragraph
section 106, describes the authority of (e) of this AD.
the FAA Administrator. Subtitle VII: Authority: 49 U.S.C. 106(g), 40113, 44701.
Aviation Programs, describes in more (g) Credit for Previous Actions
detail the scope of the Agency’s § 39.13 [Amended] You may take credit for the replication
authority. inspection of the HPT 1st stage hub that is
We are issuing this rulemaking under ■ 2. The FAA amends § 39.13 by adding required by paragraph (e)(1) of this AD, if you
the authority described in Subtitle VII, the following new airworthiness performed the inspection before the effective
Part A, Subpart III, Section 44701: directive (AD): date of this AD using PW Special Instruction
‘‘General requirements.’’ Under that 2017–05–05 Pratt & Whitney Division: (SI) No. 250F–16, dated June 22, 2016, or PW
Amendment 39–18815; Docket No. SI No. 250F–16, Revision A, dated July 14,
section, Congress charges the FAA with
FAA–2016–8836; Directorate Identifier 2016.
promoting safe flight of civil aircraft in
air commerce by prescribing regulations 2016–NE–17–AD. (h) Alternative Methods of Compliance
for practices, methods, and procedures (a) Effective Date (AMOCs)
the Administrator finds necessary for This AD is effective April 13, 2017. The Manager, Engine Certification Office,
safety in air commerce. This regulation FAA, may approve AMOCs for this AD. Use
is within the scope of that authority (b) Affected ADs the procedures found in 14 CFR 39.19 to
because it addresses an unsafe condition None. make your request. You may email your
that is likely to exist or develop on request to: ANE-AD-AMOC@faa.gov.
(c) Applicability
products identified in this rulemaking (i) Related Information
action. This AD applies to all Pratt & Whitney
Division (PW) PW4074, PW4074D, PW4077, (1) For more information about this AD,
Regulatory Findings PW4077D, PW4084D, PW4090, and PW4090– contact Jo-Ann Theriault, Aerospace
3 turbofan engines. Engineer, Engine Certification Office, FAA,
This AD will not have federalism Engine & Propeller Directorate, 1200 District
implications under Executive Order (d) Unsafe Condition Avenue, Burlington, MA 01803; phone: 781–
13132. This AD will not have a This AD was prompted by an uncontained 238–7105; fax: 781–238–7199; email: jo-
substantial direct effect on the States, on failure of a high-pressure turbine (HPT) hub ann.theriault@faa.gov.
the relationship between the national during takeoff. We are issuing this AD to (2) PW SI No. 250F–16, dated June 22,
government and the States, or on the prevent failure of the HPT 1st stage hub, 2016, and PW SI No. 250F–16, Revision A,
uncontained hub release, damage to the dated July 14, 2016, which are not
distribution of power and incorporated by reference, can be obtained
responsibilities among the various engine, and damage to the airplane.
from PW using the contact information in
levels of government. (e) Compliance paragraph (j)(3) of this AD.
For the reasons discussed above, I
Comply with this AD within the (j) Material Incorporated by Reference
certify that this AD: compliance times specified, unless already
(1) Is not a ‘‘significant regulatory done.
(1) The Director of the Federal Register
action’’ under Executive Order 12866, approved the incorporation by reference
(1) After the effective date of this AD, (IBR) of the service information listed in this
(2) Is not a ‘‘significant rule’’ under perform the HPT 1st stage hub web/rim fillet
DOT Regulatory Policies and Procedures paragraph under 5 U.S.C. 552(a) and 1 CFR
replication inspection and measurement as part 51.
(44 FR 11034, February 26, 1979), follows: (2) You must use this service information
(3) Will not affect intrastate aviation (i) For PW4074D, PW4077D, PW4084D, as applicable to do the actions required by
in Alaska to the extent that it justifies PW4090, and PW4090–3 engine models, the this AD, unless the AD specifies otherwise.
making a regulatory distinction, and next time the engine is disassembled (i) Pratt & Whitney Division Service
(4) Will not have a significant sufficiently to expose the HPT module, use Bulletin PW4G–112–72–342, dated
economic impact, positive or negative, the Accomplishment Instructions, Part A, September 23, 2016.
on a substantial number of small entities paragraphs 2.A. and 2.B.(1) through 2.B.(4) of (ii) Reserved.
under the criteria of the Regulatory PW Service Bulletin (SB) PW4G–112–72– (3) For PW service information identified
Flexibility Act. 342, dated September 23, 2016, to do the in this AD, contact Pratt & Whitney Division,
inspection. 400 Main St., East Hartford, CT 06118;
List of Subjects in 14 CFR Part 39 (ii) For PW4074 and PW4077 engine phone: 800–565–0140; fax: 860–565–5442.
Air transportation, Aircraft, Aviation models, the next time the HPT module is (4) You may view this service information
disassembled sufficiently to expose the HPT at the FAA, Engine & Propeller Directorate,
safety, Incorporation by reference,
jstallworth on DSK7TPTVN1PROD with RULES
1st stage hub, use the Accomplishment 1200 District Avenue, Burlington, MA. For
Safety. Instructions Part B, paragraphs 1.A. and information on the availability of this
Adoption of the Amendment 1.B.(1) through 1.B.(4) of PW SB PW4G–112– material at the FAA, call 781–238–7125.
72–342, dated September 23, 2016, to do the (5) You may view this service information
Accordingly, under the authority inspection. at the National Archives and Records
delegated to me by the Administrator, (2) If the hub fails the inspection, remove Administration (NARA). For information on
the FAA amends 14 CFR part 39 as the hub from service before further flight and the availability of this material at NARA, call
follows: replace with a part eligible for installation. 202–741–6030, or go to: http://
VerDate Sep<11>2014 14:49 Mar 08, 2017 Jkt 241001 PO 00000 Frm 00003 Fmt 4700 Sfmt 4700 E:\FR\FM\09MRR1.SGM 09MRR1](https://thefederalregister.org/doc/82_FR_13104/page/3.svg)
![13062 Federal Register / Vol. 82, No. 45 / Thursday, March 9, 2017 / Rules and Regulations
www.archives.gov/federal-register/cfr/ibr- FAA, Engine & Propeller Directorate, unit (HMU), which enabled needle
locations.html. 1200 District Avenue, Burlington, MA. oscillation during rapid engine deceleration.
For information on the availability of This condition, if not corrected, could lead
Issued in Burlington, Massachusetts, on
this material at the FAA, call 781–238– to further cases of IFSD, possibly resulting in
February 27, 2017.
an emergency landing on single engine.
Robert J. Ganley, 7125. It is also available on the Internet To address this potential unsafe condition,
Acting Manager, Engine & Propeller at http://www.regulations.gov by Turbomeca developed modification (Mod)
Directorate, Aircraft Certification Service. searching for and locating Docket No. TU 158, which increases needle return spring
[FR Doc. 2017–04627 Filed 3–8–17; 8:45 am] FAA–2016–7850. rate to prevent oscillation during rapid
deceleration, thus preventing the risk of un-
BILLING CODE 4910–13–P Examining the AD Docket commanded IFSD. Turbomeca also published
You may examine the AD docket on Mandatory Service Bulletin (MSB) 292 73
the Internet at http:// 3158 for embodiment of this modification in
DEPARTMENT OF TRANSPORTATION
www.regulations.gov by searching for service.
Federal Aviation Administration and locating Docket No. FAA–2016– You may obtain further information
7850; or in person at the Docket by examining the MCAI in the AD
14 CFR Part 39 Management Facility between 9 a.m. docket on the Internet at http://
and 5 p.m., Monday through Friday, www.regulations.gov by searching for
[Docket No. FAA–2016–7850; Directorate
Identifier 2016–NE–16–AD; Amendment 39– except Federal holidays. The AD docket and locating Docket No. FAA–2016–
18819; AD 2017–05–08] contains this AD, the mandatory 7850.
continuing airworthiness information
RIN 2120–AA64 (MCAI), the regulatory evaluation, any Comments
comments received, and other We gave the public the opportunity to
Airworthiness Directives; Safran
information. The address for the Docket participate in developing this AD. We
Helicopter Engines, S.A. Turboshaft
Office (phone: 800–647–5527) is received no comments on the NPRM (81
Engines
Document Management Facility, U.S. FR 76885, November 4, 2016) or on the
AGENCY: Federal Aviation Department of Transportation, Docket determination of the cost to the public.
Administration (FAA), DOT. Operations, M–30, West Building
Ground Floor, Room W12–140, 1200 Conclusion
ACTION: Final rule.
New Jersey Avenue SE., Washington, We reviewed the available data and
SUMMARY: We are adopting a new DC 20590. determined that air safety and the
airworthiness directive (AD) for all FOR FURTHER INFORMATION CONTACT: public interest require adopting this AD
Safran Helicopter Engines, S.A. Arriel Kenneth Steeves, Aerospace Engineer, as proposed.
2B turboshaft engines. This AD requires Engine Certification Office, FAA, Engine
removing any pre-modification (mod) Related Service Information Under 1
& Propeller Directorate, 1200 District CFR Part 51
TU 158 hydro-mechanical metering unit Avenue, Burlington, MA 01803; phone:
(HMU) and replacing with a part eligible 781–238–7765; fax: 781–238–7199; Safran Helicopter Engines, S.A.,
for installation. This AD was prompted email: kenneth.steeves@faa.gov. (formerly Turbomeca, S.A.) has issued
by a report of an uncommanded in-flight Mandatory Service Bulletin (MSB) No.
SUPPLEMENTARY INFORMATION:
shutdown (IFSD) on a single-engine 292 73 3158, Version A, dated April 7,
helicopter, caused by a low returning Discussion 2016. The MSB describes procedures for
spring rate of the needle of the HMU. We issued a notice of proposed removing the pre-mod TU 158 HMU and
We are issuing this AD to correct the rulemaking (NPRM) to amend 14 CFR replacing it with an HMU that
unsafe condition on these products. part 39 by adding an AD that would incorporates mod TU 158. This service
DATES: This AD becomes effective April apply to the specified products. The information is reasonably available
13, 2017. NPRM was published in the Federal because the interested parties have
The Director of the Federal Register Register on November 4, 2016 (81 FR access to it through their normal course
approved the incorporation by reference 76885). The NPRM proposed to correct of business or by the means identified
of a certain publication listed in this AD an unsafe condition for the specified in the ADDRESSES section.
as of April 13, 2017. products. The MCAI states: Costs of Compliance
ADDRESSES: For service information
Following a report of an un-commanded
identified in this final rule, contact in-flight shut-down (IFSD), Turbomeca
We estimate that this AD affects 124
Safran Helicopter Engines, S.A., 40220 carried out an engineering investigation. This engines installed on helicopters of U.S.
Tarnos, France; phone: (33) 05 59 74 40 investigation concluded that the cause of the registry.
00; fax: (33) 05 59 74 45 15. You may event was a low returning spring rate of the We estimate the following costs to
view this service information at the needle of the hydro-mechanical metering comply with this AD:
ESTIMATED COSTS
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
Removal and replacement of the HMU .......... 2 work-hours × $85 per hour = $170 per ...... $0 $170 $21,080
jstallworth on DSK7TPTVN1PROD with RULES
Authority for This Rulemaking section 106, describes the authority of detail the scope of the Agency’s
the FAA Administrator. ‘‘Subtitle VII: authority.
Title 49 of the United States Code Aviation Programs,’’ describes in more
specifies the FAA’s authority to issue We are issuing this rulemaking under
rules on aviation safety. Subtitle I, the authority described in ‘‘Subtitle VII,
VerDate Sep<11>2014 14:49 Mar 08, 2017 Jkt 241001 PO 00000 Frm 00004 Fmt 4700 Sfmt 4700 E:\FR\FM\09MRR1.SGM 09MRR1](https://thefederalregister.org/doc/82_FR_13104/page/4.svg)
Document Created: 2017-03-09 04:59:18
Document Modified: 2017-03-09 04:59:18
| 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 | Rules and Regulations | |
| Action | Final rule. | |
| Dates | This AD is effective April 13, 2017. | |
| Contact | Jo-Ann Theriault, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7105; fax: 781- 238-7199; email: [email protected] | |
| FR Citation | 82 FR 13059 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
2025 Federal Register | Disclaimer | Privacy Policy
USC | CFR | eCFR