80 FR 59081 - Airworthiness Directives; Engine Alliance Turbofan Engines

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 80, Issue 190 (October 1, 2015)

Page Range		59081-59083
FR Document		2015-24731

We propose to adopt a new airworthiness directive (AD) for certain Engine Alliance (EA) GP7270 turbofan engines. This proposed AD was prompted by the manufacturer informing us that the inspection and repair criteria in the maintenance manual for aft bolt holes of the high-pressure compressor (HPC) cone shaft on the affected engines is incorrect. This proposed AD would require inspection of the HPC cone shaft and repair of affected parts, if needed. We are proposing this AD to prevent failure of the HPC cone shaft, which could lead to uncontained engine failure and damage to the airplane.

Federal Register, Volume 80 Issue 190 (Thursday, October 1, 2015)

[Federal Register Volume 80, Number 190 (Thursday, October 1, 2015)]
[Proposed Rules]
[Pages 59081-59083]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2015-24731]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2015-3585; Directorate Identifier 2015-NE-22-AD]
RIN 2120-AA64


Airworthiness Directives; Engine Alliance Turbofan Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain Engine Alliance (EA) GP7270 turbofan engines. This proposed AD 
was prompted by the manufacturer informing us that the inspection and 
repair criteria in the maintenance manual for aft bolt holes of the 
high-pressure compressor (HPC) cone shaft on the affected engines is 
incorrect. This proposed AD would require inspection of the HPC cone 
shaft and repair of affected parts, if needed. We are proposing this AD 
to prevent failure of the HPC cone shaft, which could lead to 
uncontained engine failure and damage to the airplane.

DATES: We must receive comments on this proposed AD by November 30, 
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 
Engine Alliance, 400 Main St., East Hartford, CT 06108, M/S 169-10, 
phone: 800-

[[Page 59082]]

565-0140; email: [email protected]; Web site: 
sp.engineallianceportal.com. 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-
3585; 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: Martin Adler, Aerospace Engineer, 
Engine & Propeller Directorate, FAA, 12 New England Executive Park, 
Burlington, MA 01803; phone: 781-238-7157; 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 proposal. Send your comments to an address listed 
under the ADDRESSES section. Include ``Docket No. FAA-2015-3585; 
Directorate Identifier 2015-NE-22-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD 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 proposed AD.

Discussion

    We learned from the manufacturer that the inspection criteria and 
the repair procedures for the aft bolt holes of the HPC cone shaft, 
also referred to as the ``HPC forward stub shaft,'' were listed 
incorrectly in the maintenance manual for the Engine Alliance GP7270 
turbofan engines. HPC cone shafts inspected or repaired using the 
incorrect criteria in the maintenance manual could result in premature 
cracking of these parts. This condition, if not corrected, could result 
in failure of the HPC cone shaft, which could lead to uncontained 
engine failure and damage to the airplane.

Relevant Service Information Under 1 CFR Part 51

    Engine Alliance has issued EA Service Bulletin (SB) No. EAGP7-72-
329, dated July 21, 2015; and EA SB No. EAGP7-72-330, dated July 21, 
2015. The SBs describe procedures for shotpeening and inspection of the 
HPC cone shaft. 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 
of this NPRM.

FAA's Determination

    We are proposing this AD because we evaluated all the relevant 
information and determined the unsafe condition described previously is 
likely to exist or develop in other products of the same type design.

Proposed AD Requirements

    This proposed AD would require inspection of the HPC cone shaft and 
repair of affected parts, if needed.

Costs of Compliance

    We estimate that this proposed AD affects zero engines installed on 
airplanes of U.S. registry. The average labor rate is $85 per hour. 
Based on these figures, we estimate the cost of this proposed AD on 
U.S. operators to be $0.

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.

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):

Engine Alliance: Docket No. FAA-2015-3585; Directorate Identifier 
2015-NE-22-AD.

(a) Comments Due Date

    We must receive comments by November 30, 2015.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Engine Alliance (EA) GP7270 turbofan engines 
with a high-pressure compressor (HPC) cone shaft, part number (P/N) 
382-100-907-0, installed.

(d) Unsafe Condition

    This AD was prompted by the manufacturer informing us that the 
inspection and repair criteria in the

[[Page 59083]]

maintenance manual for aft bolt holes of the HPC cone shaft on the 
affected engines is incorrect. We are issuing this AD to prevent 
failure of the HPC cone shaft, which could lead to uncontained 
engine failure and damage to the airplane.

(e) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.
    (1) For HPC cone shafts with serial numbers listed in EA Service 
Bulletin (SB) No. EAGP7-72-330, dated July 21, 2015, inspect the 
inner diameter of the HPC cone shaft aft bolt holes for nicks, 
dents, and scratches before accumulating 9,000 cycles since new 
(CSN). Do not reinstall the HPC cone shaft if the aft bolt hole has 
a nick, dent, or scratch that is greater than 0.002 inches in depth.
    (2) For HPC cone shafts with serial numbers listed in EA SB No. 
EAGP7-72-329, dated July 21, 2015, shot peen the HPC cone shaft aft 
bolt holes before accumulating 9,000 CSN. Use paragraph 1 of the 
Accomplishment Instructions in EA SB No. EAGP7-72-329 to do the 
shotpeening.

(f) Installation Prohibition

    After the effective date of this AD, do not install an HPC cone 
shaft onto an engine with the following:
    (1) A nick, dent, or scratch in an HPC cone shaft aft bolt hole 
that is greater than 0.002 inches in depth; or
    (2) any repair of an HPC cone shaft aft bolt hole that did not 
include shot peening.

(g) Alternative Methods of Compliance (AMOCs)

    The Manager, Engine Certification Office, 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].

(h) Related Information

    (1) For more information about this AD, contact Martin Adler, 
Aerospace Engineer, Engine & Propeller Directorate, FAA, 12 New 
England Executive Park, Burlington, MA 01803; phone: 781-238-7157; 
fax: 781-238-7199; email: [email protected].
    (2) EA SB No. EAGP7-72-329, dated July 21, 2015; and EA SB No. 
EAGP7-72-330, dated July 21, 2015, can be obtained from EA using the 
contact information in paragraph (h)(3) of this proposed AD.
    (3) For service information identified in this AD, contact 
Engine Alliance, 400 Main St., East Hartford, CT 06108, M/S 169-10; 
phone: 800-565-0140; email: [email protected]; Web site: 
sp.engineallianceportal.com.
    (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 September 24, 2015.
Colleen M. D'Alessandro,
Directorate Manager, Engine & Propeller Directorate, Aircraft 
Certification Service.
[FR Doc. 2015-24731 Filed 9-30-15; 8:45 am]
BILLING CODE 4910-13-P

59082 Federal Register / Vol. 80, No. 190 / Thursday, October 1, 2015 / Proposed Rules

565–0140; email: help24@pw.utc.com; criteria in the maintenance manual Regulatory Findings
Web site: sp.engineallianceportal.com. could result in premature cracking of We determined that this proposed AD
You may view this service information these parts. This condition, if not would not have federalism implications
at the FAA, Engine & Propeller corrected, could result in failure of the under Executive Order 13132. This
Directorate, 12 New England Executive HPC cone shaft, which could lead to proposed AD would not have a
Park, Burlington, MA. For information uncontained engine failure and damage substantial direct effect on the States, on
on the availability of this material at the to the airplane. the relationship between the national
FAA, call 781–238–7125. Government and the States, or on the
Relevant Service Information Under 1
Examining the AD Docket CFR Part 51 distribution of power and
You may examine the AD docket on responsibilities among the various
Engine Alliance has issued EA
the Internet at http:// levels of government.
Service Bulletin (SB) No. EAGP7–72– For the reasons discussed above, I
www.regulations.gov by searching for 329, dated July 21, 2015; and EA SB No.
and locating Docket No. FAA–2015– certify this proposed regulation:
EAGP7–72–330, dated July 21, 2015. (1) Is not a ‘‘significant regulatory
3585; or in person at the Docket The SBs describe procedures for action’’ under Executive Order 12866,
Management Facility between 9 a.m. shotpeening and inspection of the HPC (2) Is not a ‘‘significant rule’’ under
and 5 p.m., Monday through Friday, cone shaft. This service information is the DOT Regulatory Policies and
except Federal holidays. The AD docket reasonably available because the Procedures (44 FR 11034, February 26,
contains this proposed AD, the interested parties have access to it 1979),
regulatory evaluation, any comments through their normal course of business (3) Will not affect intrastate aviation
received, and other information. The or by the means identified in the in Alaska to the extent that it justifies
street address for the Docket Office ADDRESSES section of this NPRM. making a regulatory distinction, and
(phone: 800–647–5527) is in the (4) Will not have a significant
ADDRESSES section. Comments will be FAA’s Determination
economic impact, positive or negative,
available in the AD docket shortly after We are proposing this AD because we on a substantial number of small entities
receipt. evaluated all the relevant information under the criteria of the Regulatory
FOR FURTHER INFORMATION CONTACT: and determined the unsafe condition Flexibility Act.
Martin Adler, Aerospace Engineer, described previously is likely to exist or
Engine & Propeller Directorate, FAA, 12 develop in other products of the same List of Subjects in 14 CFR Part 39
New England Executive Park, type design. Air transportation, Aircraft, Aviation
Burlington, MA 01803; phone: 781– safety, Incorporation by reference,
238–7157; fax: 781–238–7199; email: Proposed AD Requirements
Safety.
martin.adler@faa.gov. This proposed AD would require
SUPPLEMENTARY INFORMATION: inspection of the HPC cone shaft and The Proposed Amendment
repair of affected parts, if needed. Accordingly, under the authority
Comments Invited
Costs of Compliance delegated to me by the Administrator,
We invite you to send any written the FAA proposes to amend 14 CFR part
relevant data, views, or arguments about We estimate that this proposed AD 39 as follows:
this proposal. Send your comments to affects zero engines installed on
an address listed under the ADDRESSES airplanes of U.S. registry. The average PART 39—AIRWORTHINESS
section. Include ‘‘Docket No. FAA– labor rate is $85 per hour. Based on DIRECTIVES
2015–3585; Directorate Identifier 2015– these figures, we estimate the cost of
NE–22–AD’’ at the beginning of your this proposed AD on U.S. operators to ■ 1. The authority citation for part 39
comments. We specifically invite be $0. continues to read as follows:
comments on the overall regulatory, Authority for This Rulemaking Authority: 49 U.S.C. 106(g), 40113, 44701.
economic, environmental, and energy
aspects of this proposed AD. We will Title 49 of the United States Code § 39.13 [Amended]
consider all comments received by the specifies the FAA’s authority to issue ■ 2. The FAA amends § 39.13 by adding
closing date and may amend this rules on aviation safety. Subtitle I, the following new airworthiness
proposed AD because of those section 106, describes the authority of directive (AD):
comments. the FAA Administrator. Subtitle VII: Engine Alliance: Docket No. FAA–2015–
We will post all comments we Aviation Programs, describes in more 3585; Directorate Identifier 2015–NE–
receive, without change, to http:// detail the scope of the Agency’s 22–AD.
www.regulations.gov, including any authority.
We are issuing this rulemaking under (a) Comments Due Date
personal information you provide. We
will also post a report summarizing each the authority described in Subtitle VII, We must receive comments by November
Part A, Subpart III, Section 44701: 30, 2015.
substantive verbal contact we receive
about this proposed AD. ‘‘General requirements.’’ Under that (b) Affected ADs
section, Congress charges the FAA with None.
Discussion promoting safe flight of civil aircraft in
We learned from the manufacturer air commerce by prescribing regulations (c) Applicability
tkelley on DSK3SPTVN1PROD with PROPOSALS

that the inspection criteria and the for practices, methods, and procedures This AD applies to Engine Alliance (EA)
repair procedures for the aft bolt holes the Administrator finds necessary for GP7270 turbofan engines with a high-
of the HPC cone shaft, also referred to safety in air commerce. This regulation pressure compressor (HPC) cone shaft, part
as the ‘‘HPC forward stub shaft,’’ were is within the scope of that authority number (P/N) 382–100–907–0, installed.
listed incorrectly in the maintenance because it addresses an unsafe condition (d) Unsafe Condition
manual for the Engine Alliance GP7270 that is likely to exist or develop on This AD was prompted by the
turbofan engines. HPC cone shafts products identified in this rulemaking manufacturer informing us that the
inspected or repaired using the incorrect action. inspection and repair criteria in the

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Federal Register / Vol. 80, No. 190 / Thursday, October 1, 2015 / Proposed Rules 59083

maintenance manual for aft bolt holes of the Issued in Burlington, Massachusetts, on should be included on the subject line
HPC cone shaft on the affected engines is September 24, 2015. if email is used. To help the
incorrect. We are issuing this AD to prevent Colleen M. D’Alessandro, Commission process and review your
failure of the HPC cone shaft, which could Directorate Manager, Engine & Propeller comments more efficiently, please use
lead to uncontained engine failure and Directorate, Aircraft Certification Service. only one method of submission. The
damage to the airplane. [FR Doc. 2015–24731 Filed 9–30–15; 8:45 am] Commission will post all comments on
(e) Compliance BILLING CODE 4910–13–P the Commission’s Web site (http://
www.sec.gov/rules/other.shtml).
Comply with this AD within the
Comments also are available for Web
compliance times specified, unless already
SECURITIES AND EXCHANGE site viewing and printing in the
done.
COMMISSION Commission’s Public Reference Room,
(1) For HPC cone shafts with serial
100 F Street NE., Washington, DC
numbers listed in EA Service Bulletin (SB)
17 CFR Part 210 20549, on official business days
No. EAGP7–72–330, dated July 21, 2015,
inspect the inner diameter of the HPC cone [Release No. 33–9929; 34–75985; IC–31849; between the hours of 10:00 a.m. and
shaft aft bolt holes for nicks, dents, and File No. S7–20–15] 3:00 p.m. All comments received will be
scratches before accumulating 9,000 cycles
posted without change; we do not edit
since new (CSN). Do not reinstall the HPC Request for Comment on the personal identifying information from
cone shaft if the aft bolt hole has a nick, dent, Effectiveness of Financial Disclosures submissions. You should submit only
or scratch that is greater than 0.002 inches in About Entities Other Than the information that you wish to make
depth. Registrant publicly available.
(2) For HPC cone shafts with serial AGENCY: Securities and Exchange FOR FURTHER INFORMATION CONTACT:
numbers listed in EA SB No. EAGP7–72–329, Commission. Todd E. Hardiman, Associate Chief
dated July 21, 2015, shot peen the HPC cone Accountant, at (202) 551–3516, Division
ACTION: Request for comment.
shaft aft bolt holes before accumulating 9,000 of Corporation Finance; Duc Dang,
CSN. Use paragraph 1 of the SUMMARY: The Commission is Special Counsel, at (202) 551–3386,
Accomplishment Instructions in EA SB No. publishing this request for comment to Office of the Chief Accountant; or
EAGP7–72–329 to do the shotpeening. seek public comment regarding the Matthew Giordano, Chief Accountant, at
(f) Installation Prohibition financial disclosure requirements in (202) 551–6892, Division of Investment
Regulation S–X for certain entities other Management, Securities and Exchange
After the effective date of this AD, do not
than a registrant. These disclosure Commission, 100 F Street NE.,
install an HPC cone shaft onto an engine with
requirements require registrants to Washington, DC 20549.
the following:
provide financial information about
(1) A nick, dent, or scratch in an HPC cone SUPPLEMENTARY INFORMATION:
acquired businesses, subsidiaries not
shaft aft bolt hole that is greater than 0.002
consolidated and 50 percent or less Table of Contents
inches in depth; or
owned persons, guarantors and issuers I. Introduction
(2) any repair of an HPC cone shaft aft bolt
hole that did not include shot peening.
of guaranteed securities, and affiliates II. Rule 3–05 of Regulation S–X—Financial
whose securities collateralize registered Statements of Businesses Acquired or To
(g) Alternative Methods of Compliance securities. This request for comment is Be Acquired and Related Requirements
(AMOCs) related to an initiative by the Division A. Current Rule 3–05 Disclosure and
The Manager, Engine Certification Office, of Corporation Finance to review the Related Requirements
may approve AMOCs for this AD. Use the disclosure requirements applicable to 1. Content of the Rule 3–05 Disclosure and
procedures found in 14 CFR 39.19 to make public companies to consider ways to Related Requirements
improve the requirements for the benefit 2. Tests for Determining Disclosure
your request. You may email your request to:
Required by Rule 3–05 and Related
ANE-AD-AMOC@faa.gov. of investors and public companies. Requirements
DATES: Comments should be received on III. Rule 3–09 of Regulation S–X—Separate
(h) Related Information
or before November 30, 2015. Financial Statements of Subsidiaries Not
(1) For more information about this AD, Consolidated and 50 Percent or Less
ADDRESSES: Comments may be
contact Martin Adler, Aerospace Engineer, Owned Persons and Related
submitted by any of the following
Engine & Propeller Directorate, FAA, 12 New Requirements
methods:
England Executive Park, Burlington, MA A. Current Rule 3–09 Disclosure and
01803; phone: 781–238–7157; fax: 781–238– Electronic Comments Related Requirements
7199; email: martin.adler@faa.gov. B. Consideration of Current Rule 3–09
• Use the Commission’s Internet
(2) EA SB No. EAGP7–72–329, dated July Disclosure and Related Requirements
comment form (http://www.sec.gov/ 1. Content of the Rule 3–09 Disclosure and
21, 2015; and EA SB No. EAGP7–72–330, rules/other.shtml); or
dated July 21, 2015, can be obtained from EA Related Requirements
• Send an email to rule-comments@ 2. Tests for Determining Disclosure
using the contact information in paragraph sec.gov. Please include File Number S7– Required by Rule 3–09 and Related
(h)(3) of this proposed AD. 20–15 on the subject line; or Requirements
(3) For service information identified in • Use the Federal eRulemaking Portal IV. Rule 3–10 of Regulation S–X—Financial
this AD, contact Engine Alliance, 400 Main (http://www.regulations.gov). Follow the Statements of Guarantors and Issuers of
St., East Hartford, CT 06108, M/S 169–10; instructions for submitting comments. Guaranteed Securities Registered or
phone: 800–565–0140; email: help24@ Being Registered
tkelley on DSK3SPTVN1PROD with PROPOSALS

pw.utc.com; Web site: Paper Comments A. Current Rule 3–10 Disclosure and
sp.engineallianceportal.com. • Send paper comments to Secretary, Related Requirements
(4) You may view this service information Securities and Exchange Commission, B. Consideration of Current Rule 3–10
at the FAA, Engine & Propeller Directorate, Disclosure and Related Requirements
100 F Street NE., Washington, DC 1. Content of the Rule 3–10 Alternative
12 New England Executive Park, Burlington, 20549–1090.
MA. For information on the availability of Disclosure
All submissions should refer to File 2. Conditions To Providing Alternative
this material at the FAA, call 781–238–7125.
Number S7–20–15. This file number Disclosure

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Document Created: 2015-12-15 08:40:03
Document Modified: 2015-12-15 08:40:03

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 November 30, 2015.
Contact		Martin Adler, Aerospace Engineer, Engine & Propeller Directorate, FAA, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7157; fax: 781-238-7199; email: [email protected]
FR Citation		80 FR 59081
RIN Number		2120-AA64
CFR Associated		Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

80 FR 59081 - Airworthiness Directives; Engine Alliance Turbofan Engines

DEPARTMENT OF TRANSPORTATIONFederal Aviation Administration

Federal Register Volume 80, Issue 190 (October 1, 2015)

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration