81_FR_21839 81 FR 21768 - Airworthiness Directives; International Aero Engines AG Turbofan Engines

81 FR 21768 - Airworthiness Directives; International Aero Engines AG Turbofan Engines

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 81, Issue 71 (April 13, 2016)

Page Range21768-21770
FR Document2016-08462

We propose to adopt a new airworthiness directive (AD) for certain International Aero Engines AG (IAE) V2500-A1 turbofan engines. This proposed AD was prompted by a report of an uncontainment caused by a high-pressure turbine (HPT) seal release. This proposed AD would require removing from service the HPT No. 4 bearing front seal seat, part numbers (P/Ns) 2A0066, 2A1998, and 2A3432, and the HPT No. 4 bearing rear seal seat, P/Ns 2A0067, 2A1999, and 2A3433, and replacement with parts eligible for installation. This proposed AD would also require inspecting the HPT rotor and stator assembly, and, if necessary, their replacement with parts that are eligible for installation. We are proposing this AD to prevent failure of the HPT stage 2 seals, uncontained HPT seal release, damage to the engine, and damage to the airplane.

Federal Register, Volume 81 Issue 71 (Wednesday, April 13, 2016)
[Federal Register Volume 81, Number 71 (Wednesday, April 13, 2016)]
[Proposed Rules]
[Pages 21768-21770]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-08462]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2016-5392; Directorate Identifier 2016-NE-10-AD]
RIN 2120-AA64


Airworthiness Directives; International Aero Engines AG Turbofan 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain International Aero Engines AG (IAE) V2500-A1 turbofan engines. 
This proposed AD was prompted by a report of an uncontainment caused by 
a high-pressure turbine (HPT) seal release. This proposed AD would 
require removing from service the HPT No. 4 bearing front seal seat, 
part numbers (P/Ns) 2A0066, 2A1998, and 2A3432, and the HPT No. 4 
bearing rear seal seat, P/Ns 2A0067, 2A1999, and 2A3433, and 
replacement with parts eligible for installation. This proposed AD 
would also require inspecting the HPT rotor and stator assembly, and, 
if necessary, their replacement with parts that are eligible for 
installation. We are proposing this AD to prevent failure of the HPT 
stage 2 seals, uncontained HPT seal release, damage to the engine, and 
damage to the airplane.

DATES: We must receive comments on this proposed AD by June 13, 2016.

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 NPRM, contact 
International Aero Engines AG, 400 Main Street, East Hartford, CT 
06118; phone: 800-565-0140; email: [email protected]; Internet: http://fleetcare.pw.utc.com. 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.

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-
5392; 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: Brian Kierstead, Aerospace Engineer,

[[Page 21769]]

Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 
District Avenue, Burlington, MA 01803; phone: 781-238-7772; 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-2016-5392; 
Directorate Identifier 2016-NE-10-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this NPRM. We will 
consider all comments received by the closing date and may amend this 
NPRM because of those comments.
    We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this NPRM.

Discussion

    We received a report of an uncontained part release which breached 
an HPT case. This event resulted in an engine fire and exhaust gas 
temperature over-limit readings. Subsequent investigation has shown 
that the preliminary cause was blockage at the No. 4 bearing seal seat 
anti-weep grooves. Blockage of these grooves could allow oil to escape 
the No. 4 compartment and migrate to the HPT. Oil migration to the HPT 
could result in oil ignition and could eventually result in a stage 2 
air-seal fracture. This condition, if not corrected, could result in 
failure of the HPT stage 2 seals, uncontained HPT seal release, damage 
to the engine, and damage to the airplane.

Related Service Information Under 1 CFR Part 51

    We reviewed IAE Non-Modification Service Bulletin (NMSB) V2500-ENG-
72-0670, dated March 14, 2016. The NMSB identifies affected engines and 
provides guidance for replacing the No. 4 bearing front and rear seal 
seats and for inspecting the HPT rotor and stator assembly. 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 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 removing from service the HPT No. 4 
bearing front seal seat, P/Ns 2A0066, 2A1998, and 2A3432, and the HPT 
No. 4 bearing rear seal seat, P/Ns 2A0067, 2A1999, and 2A3433, and 
replacement with parts eligible for installation. This proposed AD 
would also require inspecting the HPT rotor and stator assembly, and, 
if necessary, their replacement with parts that are eligible for 
installation.

Costs of Compliance

    We estimate that this proposed AD affects 0 engines installed on 
airplanes of U.S. registry. We estimate that it would take about 10 
hours to perform the seal seat replacement. The average labor rate is 
$85 per hour. We also estimate the cost of No. 4 bearing front and rear 
seal seats to be $13,562. 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):

International Aero Engines AG: Docket No. FAA-2016-5392; Directorate 
Identifier 2016-NE-10-AD.

(a) Comments Due Date

    We must receive comments by June 13, 2016.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to International Aero Engines AG (IAE) V2500-A1 
turbofan engines with serial numbers listed in Effectivity Data of 
IAE Non-Modification Service Bulletin (NMSB) V2500-ENG-72-0670, 
dated March 14, 2016.

(d) Unsafe Condition

    This AD was prompted by a report of an uncontainment caused by a 
high-pressure turbine (HPT) seal release. We are issuing this AD to 
prevent failure of the HPT stage 2 seals, uncontained HPT seal 
release, damage to the engine, and damage to the airplane.

(e) Compliance

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

[[Page 21770]]

    (1) Prior to accumulating 500 cycles in service after the 
effective date of this AD,
    (i) Remove from service No. 4 bearing front seal seat part 
numbers (P/Ns) 2A0066, 2A1998, 2A3432; and No. 4 bearing rear seal 
seat, P/Ns 2A0067, 2A1999, 2A3433, and replace with parts eligible 
for installation.
    (ii) Inspect the HPT rotor and stator assembly. Use the 
Accomplishment Instruction, Part C, Section 1.B of IAE NMSB V2500-
ENG-72-0670, dated March 14, 2016 to perform the inspection.
    (2) For any parts that fail the inspection required by paragraph 
(e)(1)(ii) of this AD, before further flight, remove and replace 
with parts eligible for installation.

(f) 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].

(g) Related Information

    (1) For more information about this AD, contact Brian Kierstead, 
Aerospace Engineer, Engine Certification Office, FAA, Engine & 
Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; 
phone: 781-238-7772; fax: 781-238-7199; email: 
[email protected].
    (2) IAE NMSB V2500-ENG-72-0670, dated March 14, 2016, can be 
obtained from IAE, using the contact information in paragraph (g)(3) 
of this proposed AD.
    (3) For service information identified in this proposed AD, 
contact International Aero Engines AG, 400 Main Street, East 
Hartford, CT 06118; phone: 800-565-0140; email: [email protected]; 
Internet: http://fleetcare.pw.utc.com.
    (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.

    Issued in Burlington, Massachusetts, on April 8, 2016.
Colleen M. D'Alessandro,
Manager, Engine & Propeller Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-08462 Filed 4-12-16; 8:45 am]
 BILLING CODE 4910-13-P



                                                    21768                  Federal Register / Vol. 81, No. 71 / Wednesday, April 13, 2016 / Proposed Rules

                                                    (g) Modifications                                       your appropriate principal inspector, or               pressure turbine (HPT) seal release. This
                                                       (1) For all airplanes: Within 12 months              lacking a principal inspector, the manager of          proposed AD would require removing
                                                    after the effective date of this AD, modify             the local flight standards district office/            from service the HPT No. 4 bearing front
                                                    each MLG access door by installing an                   certificate holding district office. The AMOC
                                                                                                                                                                   seal seat, part numbers (P/Ns) 2A0066,
                                                    improved fairing seal, in accordance with the           approval letter must specifically reference
                                                                                                            this AD.                                               2A1998, and 2A3432, and the HPT No.
                                                    Accomplishment Instructions of EADS CASA                                                                       4 bearing rear seal seat, P/Ns 2A0067,
                                                    Service Bulletin SB–235–52–0068, Revision                  (2) Contacting the Manufacturer: For any
                                                    2, dated January 9, 2015.                               requirement in this AD to obtain corrective            2A1999, and 2A3433, and replacement
                                                       (2) For all Model CN–235–200 airplanes:              actions from a manufacturer, the action must           with parts eligible for installation. This
                                                    Concurrently with the action required in                be accomplished using a method approved                proposed AD would also require
                                                    paragraph (g)(1) of this AD, modify each                by the Manager, International Branch, ANM–             inspecting the HPT rotor and stator
                                                    affected MLG access door by installing an               116, Transport Airplane Directorate, FAA; or           assembly, and, if necessary, their
                                                    additional bolt, in accordance with the                 the European Aviation Safety Agency                    replacement with parts that are eligible
                                                    Accomplishment Instructions of EADS CASA                (EASA); or Airbus Defense and Space S.A.’s
                                                                                                                                                                   for installation. We are proposing this
                                                    Service Bulletin SB–235–52–0061, Revision               EASA Design Organization Approval (DOA).
                                                                                                            If approved by the DOA, the approval must              AD to prevent failure of the HPT stage
                                                    1, dated October 24, 2014.
                                                                                                            include the DOA-authorized signature.                  2 seals, uncontained HPT seal release,
                                                    (h) Credit for Previous Actions                                                                                damage to the engine, and damage to the
                                                                                                            (k) Related Information                                airplane.
                                                      (1) This paragraph provides credit for
                                                    actions required by paragraph (g)(1) of this              (1) Refer to Mandatory Continuing                    DATES: We must receive comments on
                                                    AD, if those actions were performed before              Airworthiness Information (MCAI) EASA AD               this proposed AD by June 13, 2016.
                                                    the effective date of this AD, using EADS               2015–0225, dated November 18, 2015, for
                                                    CASA Service Bulletin SB–235–52–0068,                   related information. You may examine the               ADDRESSES: You may send comments,
                                                    Revision 1, dated October 24, 2014; or SB–              MCAI on the Internet at http://                        using the procedures found in 14 CFR
                                                    235–52–0068, dated July 15, 2002; which are             www.regulations.gov by searching for and               11.43 and 11.45, by any of the following
                                                    not incorporated by reference in this AD.               locating Docket No. FAA–2016–5467.                     methods:
                                                      (2) This paragraph provides credit for                  (2) For service information identified in               • Federal eRulemaking Portal: Go to
                                                    actions required by paragraph (g)(2) of this            this AD, contact EADS–CASA, Military                   http://www.regulations.gov. Follow the
                                                    AD, if those actions were performed before              Transport Aircraft Division (MTAD),                    instructions for submitting comments.
                                                    the effective date of this AD using EADS                Integrated Customer Services (ICS),                       • Fax: 202–493–2251.
                                                    CASA Service Bulletin SB–235–52–0061,                   Technical Services, Avenida de Aragón 404,
                                                                                                                                                                      • Mail: U.S. Department of
                                                    dated October 31, 1996, which is not                    28022 Madrid, Spain; telephone +34 91 585
                                                                                                            55 84; fax +34 91 585 55 05; email                     Transportation, Docket Operations, M–
                                                    incorporated by reference in this AD.
                                                                                                            MTA.TechnicalService@casa.eads.net;                    30, West Building Ground Floor, Room
                                                    (i) Parts Installation Prohibition and                  Internet http://www.eads.net. You may view             W12–140, 1200 New Jersey Avenue SE.,
                                                    Limitation                                              this service information at the FAA,                   Washington, DC 20590.
                                                       (1) For airplanes modified as specified in           Transport Airplane Directorate, 1601 Lind                 • Hand Delivery: Deliver to Mail
                                                    paragraphs (g)(1) and (g)(2) of this AD, as             Avenue SW., Renton, WA. For information                address above between 9 a.m. and 5
                                                    applicable, before the effective date of this           on the availability of this material at the            p.m., Monday through Friday, except
                                                    AD: As of the effective date of this AD, no             FAA, call 425–227–1221.                                Federal holidays.
                                                    person may install a seal having part number                                                                      For service information identified in
                                                                                                              Issued in Renton, Washington, on March
                                                    CAN36032R on any MLG access door.
                                                       (2) For airplanes not modified as specified
                                                                                                            31, 2016.                                              this NPRM, contact International Aero
                                                    in paragraphs (g)(1) and (g)(2) of this AD, as          Victor Wicklund,                                       Engines AG, 400 Main Street, East
                                                    applicable, before the effective date of this           Acting Manager, Transport Airplane                     Hartford, CT 06118; phone: 800–565–
                                                    AD: After accomplishing the actions required            Directorate, Aircraft Certification Service.           0140; email: help24@pw.utc.com;
                                                    by paragraphs (g)(1) and (g)(2) of this AD, as          [FR Doc. 2016–08350 Filed 4–12–16; 8:45 am]            Internet: http://fleetcare.pw.utc.com.
                                                    applicable, no person may install a seal                BILLING CODE 4910–13–P                                 You may view this service information
                                                    having part number CAN36032R on any MLG                                                                        at the FAA, Engine & Propeller
                                                    access door.                                                                                                   Directorate, 1200 District Avenue,
                                                       (3) As of the effective date of this AD,                                                                    Burlington, MA. For information on the
                                                                                                            DEPARTMENT OF TRANSPORTATION
                                                    installation of a MLG access door on an
                                                    airplane is allowed, provided the MLG access
                                                                                                                                                                   availability of this material at the FAA,
                                                                                                            Federal Aviation Administration                        call 781–238–7125.
                                                    door is modified as required by paragraphs
                                                    (g)(1) and (g)(2) of this AD, as applicable.                                                                   Examining the AD Docket
                                                                                                            14 CFR Part 39
                                                    (j) Other FAA AD Provisions                                                                                       You may examine the AD docket on
                                                                                                            [Docket No. FAA–2016–5392; Directorate
                                                       The following provisions also apply to this
                                                                                                            Identifier 2016–NE–10–AD]                              the Internet at http://
                                                    AD:                                                                                                            www.regulations.gov by searching for
                                                       (1) Alternative Methods of Compliance                RIN 2120–AA64                                          and locating Docket No. FAA–2016–
                                                    (AMOCs): The Manager, International                                                                            5392; or in person at the Docket
                                                    Branch, ANM–116, Transport Airplane                     Airworthiness Directives; International                Management Facility between 9 a.m.
                                                    Directorate, FAA, has the authority to                  Aero Engines AG Turbofan Engines
                                                    approve AMOCs for this AD, if requested                                                                        and 5 p.m., Monday through Friday,
                                                    using the procedures found in 14 CFR 39.19.             AGENCY: Federal Aviation                               except Federal holidays. The AD docket
                                                    In accordance with 14 CFR 39.19, send your              Administration (FAA), DOT.                             contains this proposed AD, the
                                                    request to your principal inspector or local                                                                   regulatory evaluation, any comments
jstallworth on DSK7TPTVN1PROD with PROPOSALS




                                                                                                            ACTION: Notice of proposed rulemaking
                                                    Flight Standards District Office, as
                                                                                                            (NPRM).                                                received, and other information. The
                                                    appropriate. If sending information directly                                                                   street address for the Docket Office
                                                    to the International Branch, send it to ATTN:                                                                  (phone: 800–647–5527) is in the
                                                                                                            SUMMARY:  We propose to adopt a new
                                                    Shahram Daneshmandi, Aerospace Engineer,                                                                       ADDRESSES section. Comments will be
                                                    International Branch, ANM–116, Transport                airworthiness directive (AD) for certain
                                                                                                            International Aero Engines AG (IAE)                    available in the AD docket shortly after
                                                    Airplane Directorate, FAA, 1601 Lind
                                                    Avenue SW., Renton, WA 98057–3356;                      V2500–A1 turbofan engines. This                        receipt.
                                                    telephone 425–227–1112; fax 425–227–1149.               proposed AD was prompted by a report                   FOR FURTHER INFORMATION CONTACT:
                                                    Before using any approved AMOC, notify                  of an uncontainment caused by a high-                  Brian Kierstead, Aerospace Engineer,


                                               VerDate Sep<11>2014   14:59 Apr 12, 2016   Jkt 238001   PO 00000   Frm 00011   Fmt 4702   Sfmt 4702   E:\FR\FM\13APP1.SGM   13APP1


                                                                           Federal Register / Vol. 81, No. 71 / Wednesday, April 13, 2016 / Proposed Rules                                               21769

                                                    Engine Certification Office, FAA, Engine                FAA’s Determination                                    responsibilities among the various
                                                    & Propeller Directorate, 1200 District                    We are proposing this AD because we                  levels of government.
                                                    Avenue, Burlington, MA 01803; phone:                    evaluated all the relevant information                   For the reasons discussed above, I
                                                    781–238–7772; fax: 781–238–7199;                        and determined the unsafe condition                    certify this proposed regulation:
                                                    email: brian.kierstead@faa.gov.                                                                                  (1) Is not a ‘‘significant regulatory
                                                                                                            described previously is likely to exist or
                                                                                                            develop in other products of the same                  action’’ under Executive Order 12866,
                                                    SUPPLEMENTARY INFORMATION:                                                                                       (2) Is not a ‘‘significant rule’’ under
                                                                                                            type design.
                                                    Comments Invited                                                                                               the DOT Regulatory Policies and
                                                                                                            Proposed AD Requirements                               Procedures (44 FR 11034, February 26,
                                                      We invite you to send any written                       This proposed AD would require                       1979),
                                                    relevant data, views, or arguments about                removing from service the HPT No. 4                      (3) Will not affect intrastate aviation
                                                    this proposal. Send your comments to                    bearing front seal seat, P/Ns 2A0066,                  in Alaska to the extent that it justifies
                                                    an address listed under the ADDRESSES                   2A1998, and 2A3432, and the HPT No.                    making a regulatory distinction, and
                                                    section. Include ‘‘Docket No. FAA–                      4 bearing rear seal seat, P/Ns 2A0067,                   (4) Will not have a significant
                                                    2016–5392; Directorate Identifier 2016–                 2A1999, and 2A3433, and replacement                    economic impact, positive or negative,
                                                    NE–10–AD’’ at the beginning of your                     with parts eligible for installation. This             on a substantial number of small entities
                                                    comments. We specifically invite                        proposed AD would also require                         under the criteria of the Regulatory
                                                    comments on the overall regulatory,                     inspecting the HPT rotor and stator                    Flexibility Act.
                                                    economic, environmental, and energy                     assembly, and, if necessary, their                     List of Subjects in 14 CFR Part 39
                                                    aspects of this NPRM. We will consider                  replacement with parts that are eligible                 Air transportation, Aircraft, Aviation
                                                    all comments received by the closing                    for installation.                                      safety, Incorporation by reference,
                                                    date and may amend this NPRM                                                                                   Safety.
                                                                                                            Costs of Compliance
                                                    because of those comments.
                                                                                                               We estimate that this proposed AD                   The Proposed Amendment
                                                       We will post all comments we                         affects 0 engines installed on airplanes
                                                    receive, without change, to http://                                                                              Accordingly, under the authority
                                                                                                            of U.S. registry. We estimate that it
                                                    www.regulations.gov, including any                                                                             delegated to me by the Administrator,
                                                                                                            would take about 10 hours to perform
                                                    personal information you provide. We                                                                           the FAA proposes to amend 14 CFR part
                                                                                                            the seal seat replacement. The average
                                                    will also post a report summarizing each                                                                       39 as follows:
                                                                                                            labor rate is $85 per hour. We also
                                                    substantive verbal contact we receive                   estimate the cost of No. 4 bearing front
                                                    about this NPRM.                                                                                               PART 39—AIRWORTHINESS
                                                                                                            and rear seal seats to be $13,562. Based               DIRECTIVES
                                                    Discussion                                              on these figures, we estimate the cost of
                                                                                                            this proposed AD on U.S. operators to                  ■ 1. The authority citation for part 39
                                                       We received a report of an                           be $0.                                                 continues to read as follows:
                                                    uncontained part release which                                                                                     Authority: 49 U.S.C. 106(g), 40113, 44701.
                                                                                                            Authority for This Rulemaking
                                                    breached an HPT case. This event
                                                    resulted in an engine fire and exhaust                     Title 49 of the United States Code                  § 39.13   [Amended]
                                                    gas temperature over-limit readings.                    specifies the FAA’s authority to issue                 ■ 2. The FAA amends § 39.13 by adding
                                                    Subsequent investigation has shown                      rules on aviation safety. Subtitle I,                  the following new airworthiness
                                                    that the preliminary cause was blockage                 section 106, describes the authority of                directive (AD):
                                                    at the No. 4 bearing seal seat anti-weep                the FAA Administrator. Subtitle VII:
                                                                                                                                                                   International Aero Engines AG: Docket No.
                                                    grooves. Blockage of these grooves could                Aviation Programs, describes in more                       FAA–2016–5392; Directorate Identifier
                                                    allow oil to escape the No. 4                           detail the scope of the Agency’s                           2016–NE–10–AD.
                                                    compartment and migrate to the HPT.                     authority.
                                                                                                               We are issuing this rulemaking under                (a) Comments Due Date
                                                    Oil migration to the HPT could result in
                                                    oil ignition and could eventually result                the authority described in Subtitle VII,                 We must receive comments by June 13,
                                                                                                            Part A, Subpart III, Section 44701:                    2016.
                                                    in a stage 2 air-seal fracture. This
                                                    condition, if not corrected, could result               ‘‘General requirements.’’ Under that                   (b) Affected ADs
                                                    in failure of the HPT stage 2 seals,                    section, Congress charges the FAA with                   None.
                                                    uncontained HPT seal release, damage                    promoting safe flight of civil aircraft in
                                                                                                            air commerce by prescribing regulations                (c) Applicability
                                                    to the engine, and damage to the
                                                    airplane.                                               for practices, methods, and procedures                    This AD applies to International Aero
                                                                                                            the Administrator finds necessary for                  Engines AG (IAE) V2500–A1 turbofan
                                                    Related Service Information Under 1                     safety in air commerce. This regulation                engines with serial numbers listed in
                                                    CFR Part 51                                             is within the scope of that authority                  Effectivity Data of IAE Non-Modification
                                                                                                                                                                   Service Bulletin (NMSB) V2500–ENG–72–
                                                                                                            because it addresses an unsafe condition
                                                      We reviewed IAE Non-Modification                                                                             0670, dated March 14, 2016.
                                                                                                            that is likely to exist or develop on
                                                    Service Bulletin (NMSB) V2500–ENG–                      products identified in this rulemaking                 (d) Unsafe Condition
                                                    72–0670, dated March 14, 2016. The                      action.                                                  This AD was prompted by a report of an
                                                    NMSB identifies affected engines and                                                                           uncontainment caused by a high-pressure
                                                    provides guidance for replacing the No.                 Regulatory Findings                                    turbine (HPT) seal release. We are issuing
jstallworth on DSK7TPTVN1PROD with PROPOSALS




                                                    4 bearing front and rear seal seats and                   We determined that this proposed AD                  this AD to prevent failure of the HPT stage
                                                    for inspecting the HPT rotor and stator                 would not have federalism implications                 2 seals, uncontained HPT seal release,
                                                    assembly. This service information is                   under Executive Order 13132. This                      damage to the engine, and damage to the
                                                                                                                                                                   airplane.
                                                    reasonably available because the                        proposed AD would not have a
                                                    interested parties have access to it                    substantial direct effect on the States, on            (e) Compliance
                                                    through their normal course of business                 the relationship between the national                     Comply with this AD within the
                                                    or by the means identified in the                       Government and the States, or on the                   compliance times specified, unless already
                                                    ADDRESSES section.                                      distribution of power and                              done.



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                                                    21770                  Federal Register / Vol. 81, No. 71 / Wednesday, April 13, 2016 / Proposed Rules

                                                      (1) Prior to accumulating 500 cycles in               SUMMARY:   We propose to adopt a new                   be available in the AD docket shortly
                                                    service after the effective date of this AD,            airworthiness directive (AD) for certain               after receipt.
                                                      (i) Remove from service No. 4 bearing front           Dassault Aviation Model FALCON 7X
                                                    seal seat part numbers (P/Ns) 2A0066,                                                                          FOR FURTHER INFORMATION CONTACT: Tom
                                                    2A1998, 2A3432; and No. 4 bearing rear seal
                                                                                                            airplanes. This proposed AD was                        Rodriguez, Aerospace Engineer,
                                                    seat, P/Ns 2A0067, 2A1999, 2A3433, and                  prompted by investigation results that                 International Branch, ANM–116,
                                                    replace with parts eligible for installation.           determined that a certain thickness of                 Transport Airplane Directorate, FAA,
                                                      (ii) Inspect the HPT rotor and stator                 the fuel tank panels is insufficient to                1601 Lind Avenue SW., Renton, WA
                                                    assembly. Use the Accomplishment                        meet the certification requirements.                   98057–3356; telephone 425–227–1137;
                                                    Instruction, Part C, Section 1.B of IAE NMSB            This proposed AD would require                         fax 425–227–1149.
                                                    V2500–ENG–72–0670, dated March 14, 2016                 inspecting the thickness of the fuel tank
                                                    to perform the inspection.                                                                                     SUPPLEMENTARY INFORMATION:
                                                                                                            panels, and repair if necessary. We are
                                                      (2) For any parts that fail the inspection
                                                    required by paragraph (e)(1)(ii) of this AD,            proposing this AD to detect and correct                Comments Invited
                                                    before further flight, remove and replace with          improper thickness of the fuel tank                      We invite you to send any written
                                                    parts eligible for installation.                        panels. Improper thickness increases the               relevant data, views, or arguments about
                                                                                                            risk of damaging and puncturing a fuel                 this proposed AD. Send your comments
                                                    (f) Alternative Methods of Compliance
                                                    (AMOCs)
                                                                                                            tank wall panel as a result of a high                  to an address listed under the
                                                                                                            energy lightning strike, which could                   ADDRESSES section. Include ‘‘Docket No.
                                                       The Manager, Engine Certification Office,            lead to loss of electrical power and/or
                                                    FAA, may approve AMOCs for this AD. Use                                                                        FAA–2016–5466; Directorate Identifier
                                                    the procedures found in 14 CFR 39.19 to                 other essential functions, possibly                    2015–NM–183–AD’’ at the beginning of
                                                    make your request. You may email your                   resulting in reduced control of the                    your comments. We specifically invite
                                                    request to: ANE-AD-AMOC@faa.gov.                        airplane or ignition of a fuel tank.                   comments on the overall regulatory,
                                                    (g) Related Information                                 DATES: We must receive comments on                     economic, environmental, and energy
                                                                                                            this proposed AD by May 31, 2016.                      aspects of this proposed AD. We will
                                                       (1) For more information about this AD,
                                                    contact Brian Kierstead, Aerospace Engineer,            ADDRESSES: You may send comments,                      consider all comments received by the
                                                    Engine Certification Office, FAA, Engine &              using the procedures found in 14 CFR                   closing date and may amend this
                                                    Propeller Directorate, 1200 District Avenue,            11.43 and 11.45, by any of the following               proposed AD based on those comments.
                                                    Burlington, MA 01803; phone: 781–238–                   methods:                                                 We will post all comments we
                                                    7772; fax: 781–238–7199; email:                            • Federal eRulemaking Portal: Go to                 receive, without change, to http://
                                                    brian.kierstead@faa.gov.                                http://www.regulations.gov. Follow the                 www.regulations.gov, including any
                                                       (2) IAE NMSB V2500–ENG–72–0670, dated                instructions for submitting comments.                  personal information you provide. We
                                                    March 14, 2016, can be obtained from IAE,
                                                    using the contact information in paragraph
                                                                                                               • Fax: 202–493–2251.                                will also post a report summarizing each
                                                    (g)(3) of this proposed AD.                                • Mail: U.S. Department of                          substantive verbal contact we receive
                                                       (3) For service information identified in            Transportation, Docket Operations, M–                  about this proposed AD.
                                                    this proposed AD, contact International Aero            30, West Building Ground Floor, Room
                                                                                                                                                                   Discussion
                                                    Engines AG, 400 Main Street, East Hartford,             W12–140, 1200 New Jersey Avenue SE.,
                                                    CT 06118; phone: 800–565–0140; email:                   Washington, DC 20590.                                    The European Aviation Safety Agency
                                                    help24@pw.utc.com; Internet: http://                       • Hand Delivery: Deliver to Mail                    (EASA), which is the Technical Agent
                                                    fleetcare.pw.utc.com.                                   address above between 9 a.m. and 5                     for the Member States of the European
                                                       (4) You may view this service information                                                                   Union, has issued EASA Airworthiness
                                                    at the FAA, Engine & Propeller Directorate,
                                                                                                            p.m., Monday through Friday, except
                                                    1200 District Avenue, Burlington, MA. For               Federal holidays.                                      Directive 2015–0216, dated October 28,
                                                    information on the availability of this                    For service information identified in               2015 (referred to after this as the
                                                    material at the FAA, call 781–238–7125.                 this NPRM, contact Dassault Falcon Jet                 Mandatory Continuing Airworthiness
                                                                                                            Corporation, Teterboro Airport, P.O.                   Information, or ‘‘the MCAI’’), to correct
                                                      Issued in Burlington, Massachusetts, on
                                                    April 8, 2016.                                          Box 2000, South Hackensack, NJ 07606;                  an unsafe condition for certain Dassault
                                                                                                            telephone 201–440–6700; Internet                       Aviation Model FALCON 7X airplanes.
                                                    Colleen M. D’Alessandro,
                                                                                                            http://www.dassaultfalcon.com. You                     The MCAI states:
                                                    Manager, Engine & Propeller Directorate,
                                                    Aircraft Certification Service.                         may view this referenced service                          Several rear fuselage tanks of the Falcon 7X
                                                                                                            information at the FAA, Transport                      were assembled on the production line with
                                                    [FR Doc. 2016–08462 Filed 4–12–16; 8:45 am]
                                                                                                            Airplane Directorate, 1601 Lind Avenue                 a lateral panel, which had been excessively
                                                    BILLING CODE 4910–13–P
                                                                                                            SW., Renton, WA. For information on                    chemically-milled in some areas.
                                                                                                            the availability of this material at the               Investigation results determined that the
                                                                                                            FAA, call 425–227–1221.                                remaining thickness is insufficient to meet
                                                    DEPARTMENT OF TRANSPORTATION                                                                                   the certification requirements. Dassault
                                                                                                            Examining the AD Docket                                Aviation identified the individual aeroplanes
                                                    Federal Aviation Administration                                                                                that are potentially affected by this
                                                                                                               You may examine the AD docket on                    production deficiency. Due to this reduced
                                                    14 CFR Part 39                                          the Internet at http://                                thickness, the risk of damaging and
                                                                                                            www.regulations.gov by searching for                   puncturing a fuel tank wall panel as a result
                                                    [Docket No. FAA–2016–5466; Directorate                  and locating Docket No. FAA–2016–                      of a high energy lightning strike is increased.
                                                    Identifier 2015–NM–183–AD]                              5466; or in person at the Docket                          This condition, if not detected and
                                                    RIN 2120–AA64                                           Management Facility between 9 a.m.                     corrected, could lead to loss of electrical
jstallworth on DSK7TPTVN1PROD with PROPOSALS




                                                                                                            and 5 p.m., Monday through Friday,                     power and/or other essential functions,
                                                    Airworthiness Directives; Dassault                      except Federal holidays. The AD docket                 possibly resulting in reduced control of the
                                                    Aviation                                                contains this proposed AD, the                         aeroplane or ignition of a fuel tank.
                                                                                                                                                                      To address this potential unsafe condition,
                                                    AGENCY: Federal Aviation                                regulatory evaluation, any comments                    Dassault Aviation published Service Bulletin
                                                    Administration (FAA), DOT.                              received, and other information. The                   (SB) 7X–245 to provide inspection and repair
                                                                                                            street address for the Docket Operations               instructions.
                                                    ACTION: Notice of proposed rulemaking
                                                                                                            office (telephone 800–647–5527) is in                     For the reasons described above, this
                                                    (NPRM).
                                                                                                            the ADDRESSES section. Comments will                   [EASA] AD requires a one-time inspection of



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Document Created: 2016-04-13 03:11:55
Document Modified: 2016-04-13 03:11:55
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionProposed Rules
ActionNotice of proposed rulemaking (NPRM).
DatesWe must receive comments on this proposed AD by June 13, 2016.
ContactBrian Kierstead, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7772; fax: 781- 238-7199; email: [email protected]
FR Citation81 FR 21768 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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