83 FR 35421 - Airworthiness Directives; General Electric Company Turbofan Engines

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 83, Issue 144 (July 26, 2018)

Page Range		35421-35422
FR Document		2018-15876

We are adopting a new airworthiness directive (AD) for all General Electric Company (GE) GEnx-1B engines. This AD was prompted by a report of a center vent tube (CVT) failure leading to a loss of oil pressure and subsequent in-flight engine shutdown. This AD requires removal of an affected extension duct and replacing it with a part eligible for installation. We are issuing this AD to address the unsafe condition on these products.

Federal Register, Volume 83 Issue 144 (Thursday, July 26, 2018)

[Federal Register Volume 83, Number 144 (Thursday, July 26, 2018)]
[Rules and Regulations]
[Pages 35421-35422]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-15876]



========================================================================
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. 83, No. 144 / Thursday, July 26, 2018 / Rules 
and Regulations

[[Page 35421]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0224; Product Identifier 2018-NE-01-AD; Amendment 
39-19332; AD 2018-14-12]
RIN 2120-AA64


Airworthiness Directives; General Electric Company Turbofan 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for all 
General Electric Company (GE) GEnx-1B engines. This AD was prompted by 
a report of a center vent tube (CVT) failure leading to a loss of oil 
pressure and subsequent in-flight engine shutdown. This AD requires 
removal of an affected extension duct and replacing it with a part 
eligible for installation. We are issuing this AD to address the unsafe 
condition on these products.

DATES: This AD is effective August 30, 2018.

ADDRESSES: For service information identified in this final rule, 
contact General Electric Company, GE Aviation, Room 285, 1 Neumann Way, 
Cincinnati, OH 45215; phone: 513-552-3272; email: 
[email protected]. You may view this service information at 
the FAA, Engine and Propeller Standards Branch, 1200 District Avenue, 
Burlington, MA. For information on the availability of this material at 
the FAA, call 781-238-7759. It is also available on the internet at 
http://www.regulations.gov by searching for and locating Docket No. 
FAA-2018-0224.

Examining the AD Docket

    You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0224; or in person at Docket Operations between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The AD docket contains 
this final rule, the regulatory evaluation, any comments received, and 
other information. The address for Docket Operations (phone: 800-647-
5527) is U.S. Department of Transportation, Docket Operations, M-30, 
West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE, 
Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Herman Mak, Aerospace Engineer, ECO 
Branch, FAA, 1200 District Ave., Burlington, MA 01803; phone: 781-238-
7147; 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 all GE GEnx-1B engines. The 
NPRM published in the Federal Register on April 30, 2018 (83 FR 18747). 
The NPRM was prompted by a report of a CVT failure leading to a loss of 
oil pressure and subsequent in-flight engine shutdown. During the 
event, the CVT failed due to oil leaking into the fan mid shaft, 
resulting in coking on the seal assembly and overpressurization of the 
CVT. The NPRM proposed to require removal of an affected extension duct 
and replacing it with a part eligible for installation. We are issuing 
this AD to address the unsafe condition on these products.

Comments

    We gave the public the opportunity to participate in developing 
this final rule. We have considered the comments received. The Air Line 
Pilots Association and United Airlines supported the NPRM.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
this final rule as proposed.

Related Service Information

    We reviewed GE GEnx-1B Service Bulletin (SB) 72-0331 R01, dated 
August 21, 2017. The SB describes procedures for replacing air/oil 
extension ducts, P/N 2332M85P01 or 2331M25G03, with an extension duct 
eligible for installation.

Costs of Compliance

    We estimate that this AD affects 97 engines installed on airplanes 
of U.S. registry.
    We estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Replacement of Extension Duct.........  4 work-hours x $85 per           $16,270         $16,610      $1,611,170
                                         hour = $340.
----------------------------------------------------------------------------------------------------------------

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

[[Page 35422]]

products identified in this rulemaking action.
    This AD is issued in accordance with authority delegated by the 
Executive Director, Aircraft Certification Service, as authorized by 
FAA Order 8000.51C. In accordance with that order, issuance of ADs is 
normally a function of the Compliance and Airworthiness Division, but 
during this transition period, the Executive Director has delegated the 
authority to issue ADs applicable to engines, propellers, and 
associated appliances to the Manager, Engine and Propeller Standards 
Branch, Policy and Innovation Division.

Regulatory Findings

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

List of Subjects in 14 CFR Part 39

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

Adoption of the Amendment

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

PART 39--AIRWORTHINESS DIRECTIVES

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

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


Sec.  39.13  [Amended]

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

2018-14-12 General Electric Company: Amendment 39-19332; Docket No. 
FAA-2018-0224; Product Identifier 2018-NE-01-AD.

(a) Effective Date

    This AD is effective August 30, 2018.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to General Electric Company (GE) GEnx-1B64, -
1B64/P1, -1B64/P2, -1B67, -1B67/P1, -1B67/P2, -1B70, -1B70/75/P1, -
1B70/75/P2, -1B70/P1, -1B70/P2, -1B70C/P1, -1B70C/P2, -1B74/75/P1, 
and -1B74/75/P2 engines with air/oil extension duct, part number (P/
N) 2332M85P01 or 2331M25G03, installed.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7250, Turbine 
Section.

(e) Unsafe Condition

    This AD was prompted by reports of a center vent tube (CVT) 
failure. We are issuing this AD to prevent failure of the CVT. The 
unsafe condition, if not addressed, could result in failure of one 
or more engines, loss of thrust control, and loss of the airplane.

(f) Compliance

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

(g) Required Action

    At the next engine shop visit after the effective date of this 
AD, remove air/oil extension ducts, P/N 2332M85P01 or 2331M25G03, 
and replace with a part eligible for installation.

(h) Definition

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

(i) Installation Prohibition

    After the effective date of this AD, do not install an air/oil 
extension duct, P/N 2332M85P01 or 2331M25G03, into a fan mid shaft 
assembly.

(j) 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 (k) 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.

(k) Related Information

    For more information about this AD, contact Herman Mak, 
Aerospace Engineer, ECO Branch, FAA, 1200 District Ave., Burlington, 
MA 01803; phone: 781-238-7147; fax: 781-238-7199; email: 
[email protected].

(l) Material Incorporated by Reference

    None.

    Issued in Burlington, Massachusetts, on July 19, 2018.
Karen M. Grant,
Acting Manager, Engine and Propeller Standards Branch, Aircraft 
Certification Service.
[FR Doc. 2018-15876 Filed 7-25-18; 8:45 am]
BILLING CODE 4910-13-P

35421

Rules and Regulations Federal Register
Vol. 83, No. 144

Thursday, July 26, 2018

This section of the FEDERAL REGISTER OH 45215; phone: 513–552–3272; email: Register on April 30, 2018 (83 FR
contains regulatory documents having general aviation.fleetsupport@ge.com. You may 18747). The NPRM was prompted by a
applicability and legal effect, most of which view this service information at the report of a CVT failure leading to a loss
are keyed to and codified in the Code of FAA, Engine and Propeller Standards of oil pressure and subsequent in-flight
Federal Regulations, which is published under Branch, 1200 District Avenue, engine shutdown. During the event, the
50 titles pursuant to 44 U.S.C. 1510.
Burlington, MA. For information on the CVT failed due to oil leaking into the
The Code of Federal Regulations is sold by availability of this material at the FAA, fan mid shaft, resulting in coking on the
the Superintendent of Documents. call 781–238–7759. It is also available seal assembly and overpressurization of
on the internet at http:// the CVT. The NPRM proposed to require
www.regulations.gov by searching for removal of an affected extension duct
DEPARTMENT OF TRANSPORTATION and locating Docket No. FAA–2018– and replacing it with a part eligible for
0224. installation. We are issuing this AD to
Federal Aviation Administration address the unsafe condition on these
Examining the AD Docket
products.
14 CFR Part 39 You may examine the AD docket on
the internet at http:// Comments
[Docket No. FAA–2018–0224; Product
Identifier 2018–NE–01–AD; Amendment 39– www.regulations.gov by searching for We gave the public the opportunity to
19332; AD 2018–14–12] and locating Docket No. FAA–2018– participate in developing this final rule.
0224; or in person at Docket Operations We have considered the comments
RIN 2120–AA64
between 9 a.m. and 5 p.m., Monday received. The Air Line Pilots
Airworthiness Directives; General through Friday, except Federal holidays. Association and United Airlines
Electric Company Turbofan Engines The AD docket contains this final rule, supported the NPRM.
the regulatory evaluation, any
AGENCY: Federal Aviation comments received, and other Conclusion
Administration (FAA), DOT. information. The address for Docket We reviewed the relevant data,
ACTION: Final rule. Operations (phone: 800–647–5527) is considered the comments received, and
U.S. Department of Transportation, determined that air safety and the
SUMMARY: We are adopting a new Docket Operations, M–30, West public interest require adopting this
airworthiness directive (AD) for all Building Ground Floor, Room W12–140, final rule as proposed.
General Electric Company (GE) GEnx-1B 1200 New Jersey Avenue SE,
engines. This AD was prompted by a Washington, DC 20590. Related Service Information
report of a center vent tube (CVT) failure FOR FURTHER INFORMATION CONTACT: We reviewed GE GEnx-1B Service
leading to a loss of oil pressure and Herman Mak, Aerospace Engineer, ECO Bulletin (SB) 72–0331 R01, dated
subsequent in-flight engine shutdown. Branch, FAA, 1200 District Ave., August 21, 2017. The SB describes
This AD requires removal of an affected Burlington, MA 01803; phone: 781– procedures for replacing air/oil
extension duct and replacing it with a 238–7147; fax: 781–238–7199; email: extension ducts, P/N 2332M85P01 or
part eligible for installation. We are herman.mak@faa.gov. 2331M25G03, with an extension duct
issuing this AD to address the unsafe eligible for installation.
SUPPLEMENTARY INFORMATION:
condition on these products.
DATES: This AD is effective August 30, Discussion Costs of Compliance
2018. We issued a notice of proposed We estimate that this AD affects 97
ADDRESSES: For service information rulemaking (NPRM) to amend 14 CFR engines installed on airplanes of U.S.
identified in this final rule, contact part 39 by adding an AD that would registry.
General Electric Company, GE Aviation, apply to all GE GEnx-1B engines. The We estimate the following costs to
Room 285, 1 Neumann Way, Cincinnati, NPRM published in the Federal comply with this AD:

ESTIMATED COSTS
Cost per Cost on U.S.
Action Labor cost Parts cost product operators

Replacement of Extension Duct ..................... 4 work-hours × $85 per hour = $340 ............. $16,270 $16,610 $1,611,170

Authority for This Rulemaking detail the scope of the Agency’s air commerce by prescribing regulations
authority.
sradovich on DSK3GMQ082PROD with RULES

for practices, methods, and procedures
Title 49 of the United States Code the Administrator finds necessary for
specifies the FAA’s authority to issue We are issuing this rulemaking under
the authority described in Subtitle VII, safety in air commerce. This regulation
rules on aviation safety. Subtitle I, is within the scope of that authority
Part A, Subpart III, Section 44701:
section 106, describes the authority of because it addresses an unsafe condition
‘‘General requirements.’’ Under that
the FAA Administrator. Subtitle VII: that is likely to exist or develop on
section, Congress charges the FAA with
Aviation Programs, describes in more
promoting safe flight of civil aircraft in

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35422 Federal Register / Vol. 83, No. 144 / Thursday, July 26, 2018 / Rules and Regulations

products identified in this rulemaking (a) Effective Date or lacking a principal inspector, the manager
action. This AD is effective August 30, 2018. of the local flight standards district office/
certificate holding district office.
This AD is issued in accordance with (b) Affected ADs
authority delegated by the Executive (k) Related Information
None.
Director, Aircraft Certification Service, For more information about this AD,
as authorized by FAA Order 8000.51C. (c) Applicability contact Herman Mak, Aerospace Engineer,
In accordance with that order, issuance This AD applies to General Electric ECO Branch, FAA, 1200 District Ave.,
of ADs is normally a function of the Company (GE) GEnx–1B64, –1B64/P1, Burlington, MA 01803; phone: 781–238–
Compliance and Airworthiness –1B64/P2, –1B67, –1B67/P1, –1B67/P2, 7147; fax: 781–238–7199; email:
Division, but during this transition –1B70, –1B70/75/P1, –1B70/75/P2, –1B70/ herman.mak@faa.gov.
period, the Executive Director has P1, –1B70/P2, –1B70C/P1, –1B70C/P2, (l) Material Incorporated by Reference
delegated the authority to issue ADs –1B74/75/P1, and –1B74/75/P2 engines with
air/oil extension duct, part number (P/N) None.
applicable to engines, propellers, and 2332M85P01 or 2331M25G03, installed. Issued in Burlington, Massachusetts, on
associated appliances to the Manager, July 19, 2018.
Engine and Propeller Standards Branch, (d) Subject
Karen M. Grant,
Policy and Innovation Division. Joint Aircraft System Component (JASC)
Code 7250, Turbine Section. Acting Manager, Engine and Propeller
Regulatory Findings Standards Branch, Aircraft Certification
(e) Unsafe Condition Service.
This AD will not have federalism
This AD was prompted by reports of a [FR Doc. 2018–15876 Filed 7–25–18; 8:45 am]
implications under Executive Order center vent tube (CVT) failure. We are issuing BILLING CODE 4910–13–P
13132. This AD will not have a this AD to prevent failure of the CVT. The
substantial direct effect on the States, on unsafe condition, if not addressed, could
the relationship between the national result in failure of one or more engines, loss
government and the States, or on the of thrust control, and loss of the airplane. ENVIRONMENTAL PROTECTION
distribution of power and AGENCY
(f) Compliance
responsibilities among the various
Comply with this AD within the 40 CFR Part 62
levels of government. compliance times specified, unless already
For the reasons discussed above, I done. [EPA–R05–OAR–2018–0113; FRL–9980–
certify that this AD: 95—Region 5]
(g) Required Action
(1) Is not a ‘‘significant regulatory
At the next engine shop visit after the Air Plan Approval; Ohio; Hospital/
action’’ under Executive Order 12866,
effective date of this AD, remove air/oil Medical/Infectious Waste Incinerator
(2) Is not a ‘‘significant rule’’ under extension ducts, P/N 2332M85P01 or Withdrawal for Designated Facilities
DOT Regulatory Policies and Procedures 2331M25G03, and replace with a part eligible and Pollutants
(44 FR 11034, February 26, 1979), for installation.
(3) Will not affect intrastate aviation AGENCY: Environmental Protection
(h) Definition Agency (EPA).
in Alaska, and
(4) Will not have a significant For the purpose of this AD, an ‘‘engine ACTION: Final rule.
shop visit’’ is the induction of an engine into
economic impact, positive or negative, the shop for maintenance involving the SUMMARY: The Environmental Protection
on a substantial number of small entities separation of pairs of major mating engine Agency (EPA) is approving Ohio’s
under the criteria of the Regulatory case flanges, except for the following request for withdrawal of the previously
Flexibility Act. situations, which do not constitute an engine
shop visit:
approved Hospital/Medical/Infectious
List of Subjects in 14 CFR Part 39 (1) Separation of engine flanges solely for Waste Incinerator (HMIWI) State Plan.
Air transportation, Aircraft, Aviation the purposes of transportation of the engine The Ohio Environmental Protection
safety, Incorporation by reference, without subsequent maintenance. Agency (OEPA) submitted its HMIWI
Safety. (2) Separation of engine flanges solely for withdrawal on January 24, 2018,
the purpose of replacing the fan or propulsor certifying that there is only one HMIWI
Adoption of the Amendment without subsequent maintenance. unit currently operating in the state of
Accordingly, under the authority (i) Installation Prohibition Ohio and requesting that the Federal
delegated to me by the Administrator, After the effective date of this AD, do not Plan apply to the single source in the
the FAA amends 14 CFR part 39 as install an air/oil extension duct, P/N State. The Federal HMIWI Plan will
follows: 2332M85P01 or 2331M25G03, into a fan mid therefore apply in Ohio.
shaft assembly. DATES: This final rule is effective on
PART 39—AIRWORTHINESS (j) Alternative Methods of Compliance August 27, 2018.
DIRECTIVES (AMOCs) ADDRESSES: EPA has established a
(1) The Manager, ECO Branch, FAA, has docket for this action under Docket ID
■ 1. The authority citation for part 39 the authority to approve AMOCs for this AD No. EPA–R05–OAR–2018–0113. All
continues to read as follows: if requested using the procedures found in 14 documents in the docket are listed on
Authority: 49 U.S.C. 106(g), 40113, 44701. CFR 39.19. In accordance with 14 CFR 39.19, the www.regulations.gov website.
send your request to your principal inspector Although listed in the index, some
§ 39.13 [Amended] or local Flight Standards District Office, as information is not publically available,
sradovich on DSK3GMQ082PROD with RULES

■ 2. The FAA amends § 39.13 by adding appropriate. If sending information directly i.e., Confidential Business Information
to the manager of the certification office,
the following new airworthiness (CBI) or other information whose
send it to the attention of the person
directive (AD): identified in paragraph (k) of this AD. You disclosure is restricted by statute.
2018–14–12 General Electric Company: may email your request to: ANE-AD-AMOC@ Certain other material, such as
Amendment 39–19332; Docket No. faa.gov. copyrighted material, is not placed on
FAA–2018–0224; Product Identifier (2) Before using any approved AMOC, the internet and will be publicly
2018–NE–01–AD. notify your appropriate principal inspector, available only in hard copy form.

VerDate Sep<11>2014 15:49 Jul 25, 2018 Jkt 244001 PO 00000 Frm 00002 Fmt 4700 Sfmt 4700 E:\FR\FM\26JYR1.SGM 26JYR1

Document Created: 2018-11-06 10:26:34
Document Modified: 2018-11-06 10:26:34

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 August 30, 2018.
Contact		Herman Mak, Aerospace Engineer, ECO Branch, FAA, 1200 District Ave., Burlington, MA 01803; phone: 781-238- 7147; fax: 781-238-7199; email: [email protected]
FR Citation		83 FR 35421
RIN Number		2120-AA64
CFR Associated		Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

83 FR 35421 - Airworthiness Directives; General Electric Company Turbofan Engines

DEPARTMENT OF TRANSPORTATIONFederal Aviation Administration

Federal Register Volume 83, Issue 144 (July 26, 2018)

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration