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2018-09-51 CFM INTERNATIONAL S.A.:
Amendment 39-19287; Docket No. FAA-2018-0429; Product Identifier 2018-NE-13-AD.

(a) EFFECTIVE DATE

    This AD is effective June 7, 2018 to all persons  except those persons
    to whom it was made immediately effective  by Emergency AD 2018-09-51,
    issued  on  April 20, 2018,  which contained  the requirements of this
    amendment.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This  AD  applies  to  all  CFM International, S.A., (CFM) CFM56-7B20,
    -7B22, -7B24, -7B26, -7B27,  -7B22/B1,  -7B24/B1,  -7B26/B1, -7B26/B2,
    -7B27/B1, -7B27/B3, -7B20/3, -7B22/3, -7B24/3, -7B26/3, -7B27/3, -7B22
    /3B1, -7B24/3B1, -7B26/3B1, -7B26/3B2, -7B26/3F, -7B26/3B2F, -7B27/3B1
    -7B27/3B3,  -7B27/3F,  -7B27/3B1F,  -7B20E,  -7B22E,  -7B24E,  -7B26E,
    -7B27E, -7B22E/B1, -7B24E/B1,  -7B26E/B1, -7B26E/B2, -7B26E/F, -7B26E/
    B2F,  -7B27E/B1,  -7B27E/B3,  -7B27E/F,  -7B27E/B1F, -7B20/2, -7B22/2,
    -7B24/2, -7B26/2, -7B27/2, -7B27A, -7B27AE and -7B27A/3 engine models,
    with 30,000 or more total accumulated flight cycles since new,  as  of
    April 20, 2018.

(d) SUBJECT

    Joint Aircraft System Component (JASC) Code 7200, Engine.

(e) UNSAFE CONDITION

    This AD  was prompted  by a recent event involving  an engine failure,
    resulting in the engine inlet cowl disintegrating, debris  penetrating
    the  fuselage  causing  a  loss  of  pressurization  and  prompting an
    emergency descent. There was one passenger fatality as a result of the
    event. We  are issuing  this AD  to address  fan blade  failure due to
    cracking, which could result  in an engine in-flight  shutdown (IFSD),
    uncontained release  of debris,  damage to  the engine,  damage to the
    airplane, and possible airplane decompression.

(f) COMPLIANCE

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

(g) INSPECTION

(1) Within 20 days after the effective date of this AD, perform a one-time
    ultrasonic inspection of all 24 fan blade dovetail concave and  convex
    sides to detect cracking.

(2) Use the Accomplishment Instructions, paragraphs 3.A.(3)(a) through (i)
    of CFM Service Bulletin  (SB)  CFM56-7B S/B 72-1033,  dated  April 20,
    2018,  to perform the inspection required  by paragraph (g)(1) of this
    AD.

(h) CORRECTIVE ACTION

    If any unserviceable indication,  as specified  in CFM SB CFM56-7B S/B
    72-1033, dated April 20, 2018, is found during any inspection required
    by this AD,  remove the affected fan blade from service before further
    flight.

(i) NO REPORTING REQUIRED

    Although CFM SB CFM56-7B S/B 72-1033, dated April 20, 2018,  specifies
    to report findings, this AD does not include that requirement.

(j) CREDIT FOR PREVIOUS ACTIONS

    This paragraph provides credit for the actions specified  in paragraph
    (g)(1) of this AD,  if those actions were performed  before receipt of
    this AD using CFM SB CFM56-7B S/B 72-1019,  dated  March 24, 2017;  or
    Revision 1, dated June 13, 2017; or CFM SB CFM56-7B S/B 72-1024, dated
    July 24, 2017.

(k) 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
    (l) of this AD. You may email your request to ANE-AD-AMOC@faa.gov.

(2) Before using any approved AMOC,  notify your appropriate principal in-
    spector,  or  lacking a principal inspector,  the manager of the local
    flight standards district office/certificate holding district office.

(3) For  service information  that  contains  steps  that  are  labeled as
    Required for Compliance  (RC),  the provisions of paragraphs (k)(3)(i)
    and (k)(3)(ii) of this AD apply.

(i) The steps labeled as RC,  including substeps  under an RC step and any
    figures identified in an RC step,  must be done to comply with the AD.
    An AMOC is required for any deviations to RC steps, including substeps
    and identified figures.

(ii) Steps not labeled as RC may be deviated  from using  accepted methods
     in accordance with the operator’s maintenance  or  inspection program
     without obtaining approval of an AMOC, provided the RC steps, includ-
     ing substeps and identified figures,  can still be done as specified,
     and the airplane can be put back in an airworthy condition.

(l) RELATED INFORMATION

    For more information about this AD, contact Christopher McGuire, Aero-
    space Engineer, ECO Branch, FAA,  1200 District Avenue, Burlington, MA
    01803; phone: 781-238-7120;  fax: 781-238-7199; E-mail: chris.mcguire@
    faa.gov.

(m) 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.

(3) The following service information was approved for IBR on May 14, 2018
    (83 FR 19176, May 2, 2018).

(i) CFM International, S.A.,  (CFM) Service Bulletin CFM56-7B S/B 72-1033,
    dated April 20, 2018.

(ii) Reserved.

(4) For CFM service information identified in this AD,  contact CFM Inter-
    national Inc, Aviation Operations Center, 1 Neumann Way, M/D Room 285,
    Cincinnati, OH 45125;  phone: 877-432-3272;  fax: 877-432-3329; email:
    aviation.fleetsupport@ge.com.

(5) You may view  this service information  at  FAA,  Engine and Propeller
    Standards Branch, Policy and Innovation Division, 1200 District Avenue
    Burlington, MA.  For information  on the availability of this material
    at the FAA, call 781-238-7759.

(6) You  may  view  this  service  information  that  is  incorporated  by
    reference 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://www.archives.gov/federal-register/cfr/ibr-
    locations.html.

Issued  in  Burlington, Massachusetts, on May 18, 2018.  Robert J. Ganley,
Manager, Engine & Propeller Standards Branch,  Aircraft Certification Ser-
vice.

FOR FURTHER INFORMATION CONTACT: Christopher McGuire,  Aerospace Engineer,
ECO Branch,  FAA,  1200 District Avenue, Burlington, MA 01803; phone: 781-
238-7120; fax: 781-238-7199; E-mail: chris.mcguire@faa.gov.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0429; Product Identifier 2018-NE-13-AD; Amendment
39-19287; AD 2018-09-51]
RIN 2120-AA64

Airworthiness Directives; CFM International S.A. Turbofan Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for CFM
International, S.A., (CFM) CFM56-7B model engines. This emergency AD
was sent previously to all known U.S. owners and operators of CFM
CFM56-7B model engines. This AD requires a one-time ultrasonic
inspection (USI) of the concave and convex sides of the fan blade
dovetail. This AD was prompted by a recent engine failure due to a
fractured fan blade, which resulted in the engine inlet cowl
disintegrating and debris penetrating the fuselage, causing a loss of
pressurization, and prompting an emergency descent. We are issuing this
AD to address the unsafe condition on these products.

DATES: This AD is effective June 7, 2018 to all persons except those
persons to whom it was made immediately effective by Emergency AD 2018-
09-51, issued on April 20, 2018, which contained the requirements of
this amendment.
The Director of the Federal Register approved the incorporation by
reference of a certain other publication listed in this AD as of May
14, 2018 (83 FR 19176, May 2, 2018).
We must receive comments on this AD by July 9, 2018.

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: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590, between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays.
For service information identified in this AD, contact CFM
International Inc., Aviation Operations Center, 1 Neumann Way, M/D Room
285, Cincinnati, OH 45125; phone: 877-432-3272; fax: 877-432-3329;
email: aviation.fleetsupport@ge.com. 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-2018-0429.

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-
0429; 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 street address for Docket Operations (phone:
800-647-5527) is listed above. Comments will be available in the AD
docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Christopher McGuire, Aerospace
Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803;
phone: 781-238-7120; fax: 781-238-7199; Email: chris.mcguire@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

On April 20, 2018, we issued Emergency AD 2018-09-51, which
requires a one-time USI of the concave and convex sides of the fan
blade dovetail. This emergency AD was sent previously to all known U.S.
owners and operators of these CFM CFM56-7B model engines. This action
was prompted by a recent engine failure due to a fractured fan blade.
There was one passenger fatality as a result of the event. This
condition, if not addressed, could result in the engine inlet cowl
disintegrating and debris penetrating the fuselage, causing a loss of
pressurization, and prompting an emergency descent.

Relevant Service Information Under 1 CFR Part 51

We reviewed CFM Service Bulletin (SB) CFM56-7B S/B 72-1033, dated
April 20, 2018. The service information describes procedures for
performing a USI for cracks of the fan blade dovetail and removal of
cracked fan blades from service. This service information is reasonably
available because the interested parties have access to it through
their normal course of business or by the means identified in the
ADDRESSES section.

FAA's Determination

We are issuing 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.

AD Requirements

This AD requires a one-time USI of the concave and convex sides of
the fan blade dovetail.

Differences Between This AD and the Service Information

CFM SB CFM56-7B S/B 72-1033, dated April 20, 2018, provides actions
for engines with fewer than 30,000 flight cycles, but this AD does not
affect those engines. The service information also specifies repetitive
inspections, but this AD does not require that the inspection be
repeated. We published AD 2018-09-10 (83 FR 19176, May 2, 2018), which
addresses those differences.

FAA's Justification and Determination of the Effective Date

An unsafe condition exists that requires the immediate adoption of
Emergency AD 2018-09-51, issued on April 20, 2018, to all known U.S.
owners and operators of these engines. The FAA has found that the risk
to the flying public justifies waiving notice and comment prior to
adoption of this rule because the USI must be performed within 20 days.
These conditions still exist and the AD is hereby published in the
Federal Register as an amendment to section 39.13 of the Federal
Aviation Regulations (14 CFR 39.13) to make it effective to all
persons. Therefore, we find good cause that notice and opportunity for
prior public comment are impracticable. In addition, for the reason
stated above, we find that good cause exists for making this amendment
effective in less than 30 days.

Comments Invited

This AD is a final rule that involves requirements affecting flight
safety and was not preceded by notice and an opportunity for public
comment. However, we invite you to send any written data, views, or
arguments about this final rule. Send your comments to an address
listed under the ADDRESSES section. Include the docket number FAA-2018-
0429 and Product Identifier 2018-NE-13-AD at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this final rule. We will
consider all comments received by the closing date and may amend this
final rule 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 final rule.

Costs of Compliance

We estimate that this AD affects 532 engines installed on airplanes
of U.S. registry.
We estimate the following costs to comply with this AD:

Estimated Costs

Action
Labor cost
Parts cost
Cost per product
Cost on U.S. operators
Inspect engine fan blade 2 work-hours x $85 per hour = $170
$0
$170
$90,440

We estimate the following costs to do any necessary replacements
that would be required based on the results of the inspection. We have
no way of determining the number of aircraft that might need these
replacements:

On-Condition Costs

Action
Labor cost
Parts cost
Cost per product
Replace fan blade 1 work-hour x $85 per hour = $85
$8,500
$8,585

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.
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

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]

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