80_FR_76638 80 FR 76402 - Airworthiness Directives; Rolls-Royce plc Turbofan Engines

80 FR 76402 - Airworthiness Directives; Rolls-Royce plc Turbofan Engines

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 80, Issue 236 (December 9, 2015)

Page Range76402-76403
FR Document2015-30947

We propose to adopt a new airworthiness directive (AD) for certain Rolls-Royce plc (RR) RB211-22B and RB211-524 turbofan engines with low-pressure turbine (LPT) support roller bearing, part number (P/ N) LK30313 or P/N UL29651, installed. This proposed AD was prompted by a report of a breach of the turbine casing and release of engine debris. This proposed AD would require removal of certain LPT support roller bearings installed in RR RB211-22B and RB211-524 engines. We are proposing this AD to prevent failure of the LPT support roller bearing, loss of radial position following LPT blade failure, uncontained part release, damage to the engine, and damage to the airplane.

Federal Register, Volume 80 Issue 236 (Wednesday, December 9, 2015) 
[Federal Register Volume 80, Number 236 (Wednesday, December 9, 2015)]
[Proposed Rules]
[Pages 76402-76403]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2015-30947]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2015-4076; Directorate Identifier 2015-NE-30-AD]
RIN 2120-AA64


Airworthiness Directives; Rolls-Royce plc 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 Rolls-Royce plc (RR) RB211-22B and RB211-524 turbofan engines 
with low-pressure turbine (LPT) support roller bearing, part number (P/
N) LK30313 or P/N UL29651, installed. This proposed AD was prompted by 
a report of a breach of the turbine casing and release of engine 
debris. This proposed AD would require removal of certain LPT support 
roller bearings installed in RR RB211-22B and RB211-524 engines. We are 
proposing this AD to prevent failure of the LPT support roller bearing, 
loss of radial position following LPT blade failure, uncontained part 
release, damage to the engine, and damage to the airplane.

DATES: We must receive comments on this proposed AD by February 8, 
2016.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
     Mail: Docket Management Facility, U.S. Department of 
Transportation, 1200 New Jersey Avenue SE., West Building Ground Floor, 
Room W12-140, Washington, DC 20590-0001.
     Hand Delivery: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
     Fax: 202-493-2251.

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-
4076; or in person at the Docket Operations office between 9 a.m. and 5 
p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this proposed AD, the mandatory continuing airworthiness 
information (MCAI), the regulatory evaluation, any comments received, 
and other information. The 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, 
Engine Certification Office, FAA, Engine & Propeller Directorate, 12 
New England Executive Park, Burlington, MA 01803; phone: 781-238-7772; 
fax: 781-238-7199; email: brian.kierstead@faa.gov.

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2015-4076; 
Directorate Identifier 2015-NE-30-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 based on 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 
with FAA personnel concerning this proposed AD.

Discussion

    The European Aviation Safety Agency (EASA), which is the Technical 
Agent for the Member States of the European Community, has issued EASA 
AD 2015-0187, dated September 9, 2015 (referred to hereinafter as ``the 
MCAI''), to correct an unsafe condition for the specified products. The 
MCAI states:

    An RB211-524G2-T engine experienced an in-service event that 
resulted in breach of a turbine casing and some release of core 
engine debris through a hole in the engine nacelle. The 
investigation of the event determined the primary cause to have been 
fracture and release of a Low Pressure (LP) turbine stage 2 blade. 
The blade release caused secondary damage to the LP turbine, 
producing significant out-of-balance forces. The event engine was 
fitted with an LP turbine support bearing where the roller retention 
cage is constructed from two halves that are riveted together. The 
LP turbine imbalance resulted in an overload of the LP turbine 
support bearing and caused separation of the riveted, two-piece 
roller retention cage. Radial location of the LP turbine shaft was 
lost, allowing further progression of the event that resulted in a 
breach of the IP turbine casing.

    RR introduced a modified LPT support roller bearing that can 
withstand greater loads when an LPT turbine blade release occurs, 
thereby preventing LPT rotor movement. You may obtain further 
information by examining the MCAI in the AD docket on the Internet at 
http://www.regulations.gov by searching for and locating Docket No. 
FAA-2015-4076.

FAA's Determination and Requirements of This Proposed AD

    This product has been approved by the aviation authority of the 
United Kingdom, and is approved for operation in the United States. 
Pursuant to our bilateral agreement with the European Community, EASA 
has notified us of the unsafe condition described in the MCAI. We are 
proposing this AD because we evaluated all information provided by EASA 
and determined the unsafe condition exists and is likely to exist or 
develop on other products of the same type design. This proposed AD 
would require removal from service of the affected LPT support 
bearings.

Costs of Compliance

    We estimate that this proposed AD affects 9 engines installed on 
airplanes of U.S. registry. We also estimate it would take 0 hours to 
comply with this proposed AD since the proposed actions required by the 
AD would be performed during a shop visit, when major engine flanges 
are separated, which requires the removal of the LPT support roller 
bearing. Therefore, no additional time is needed to remove it. Parts 
would cost about $8,184 per engine. 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 $73,656.

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

[[Page 76403]]

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):

Rolls-Royce plc: Docket No. FAA-2015-4076; Directorate Identifier 
2015-NE-30-AD.

(a) Comments Due Date

    We must receive comments by February 8, 2016.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Rolls-Royce plc RB211-22B-02, RB211-22B (MOD 
72-8700), RB211-524B-02, RB211-524B-B-02, RB211-524B2-19, RB211-
524B2-B-19, RB211-524B3-02, RB211-524B4-02, RB211-524B4-D-02, RB211-
524C2-19, RB211-524C2-B-19, RB211-524D4-19, RB211-524D4-B-19, RB211-
524D4X-19, RB211-524D4X-B-19, RB211-524D4-39, RB211-524D4-B-39, 
RB211-524G2-19, RB211-524G3-19, RB211-524-G2-T-19, RB211-524G3-T-19, 
RB211-524H-36, RB211-524H2-19, RB211-524H-T-36, and RB211-524H2-T-19 
turbofan engines, all serial numbers, with low-pressure turbine 
(LPT) support roller bearing, part number (P/N) LK30313 or P/N 
UL29651, installed.

(d) Reason

    This AD was prompted by a report of a breach of the turbine 
casing and release of engine debris through a hole in the engine 
nacelle. We are issuing this AD to prevent failure of the LPT 
support roller bearing, loss of radial position following LPT blade 
failure, uncontained part release, damage to the engine, and damage 
to the airplane.

(e) Actions and Compliance

    Comply with this AD within the compliance times specified, 
unless already done. At the next shop visit or within 24 months 
after the effective date of this AD, whichever occurs first, remove 
from service LPT support roller bearing, P/N LK30313 or P/N UL29651, 
and replace with a part eligible for installation.

(f) Installation Prohibition

    After the effective date of this AD, do not install an LPT 
support roller bearing, P/N LK30313 or P/N UL29651, onto any engine.

(g) Definition

    For the purpose of this AD, a ``shop visit'' is defined as 
induction of an engine into the shop for maintenance involving the 
separation of pairs of major mating engine flanges, except that the 
separation of engine flanges solely for the purposes of 
transportation without subsequent engine maintenance does not 
constitute an engine shop visit.

(h) Alternative Methods of Compliance (AMOCs)

    The Manager, Engine Certification Office, FAA, may approve AMOCs 
for this AD. Use the procedures found in 14 CFR 39.19 to make your 
request. You may email your request to: ANE-AD-AMOC@faa.gov.

(i) Related Information

    (1) For more information about this AD, contact Brian Kierstead, 
Aerospace Engineer, Engine Certification Office, FAA, Engine & 
Propeller Directorate, 12 New England Executive Park, Burlington, MA 
01803; phone: 781-238-7772; fax: 781-238-7199; email: 
brian.kierstead@faa.gov.
    (2) Refer to MCAI European Aviation Safety Agency AD 2015-0187, 
dated September 9, 2015, for more information. You may examine the 
MCAI in the AD docket on the Internet at http://www.regulations.gov 
by searching for and locating it in Docket No. FAA-2015-4076.

    Issued in Burlington, Massachusetts, on December 2, 2015.
Colleen M. D'Alessandro,
Directorate Manager, Engine & Propeller Directorate, Aircraft 
Certification Service.
[FR Doc. 2015-30947 Filed 12-8-15; 8:45 am]
 BILLING CODE 4910-13-P

76402 Federal Register / Vol. 80, No. 236 / Wednesday, December 9, 2015 / Proposed Rules Issued in Burlington, Massachusetts, on 4076; or in person at the Docket separation of the riveted, two-piece roller December 3, 2015. Operations office between 9 a.m. and 5 retention cage. Radial location of the LP Colleen M. D’Alessandro, p.m., Monday through Friday, except turbine shaft was lost, allowing further Federal holidays. The AD docket progression of the event that resulted in a Directorate Manager, Engine & Propeller breach of the IP turbine casing. Directorate, Aircraft Certification Service. contains this proposed AD, the [FR Doc. 2015–30948 Filed 12–8–15; 8:45 am] mandatory continuing airworthiness RR introduced a modified LPT BILLING CODE 4910–13–P information (MCAI), the regulatory support roller bearing that can evaluation, any comments received, and withstand greater loads when an LPT other information. The address for the turbine blade release occurs, thereby DEPARTMENT OF TRANSPORTATION Docket Office (phone: 800–647–5527) is preventing LPT rotor movement. You in the ADDRESSES section. Comments may obtain further information by Federal Aviation Administration will be available in the AD docket examining the MCAI in the AD docket shortly after receipt. on the Internet at http:// 14 CFR Part 39 FOR FURTHER INFORMATION CONTACT: www.regulations.gov by searching for [Docket No. FAA–2015–4076; Directorate Brian Kierstead, Aerospace Engineer, and locating Docket No. FAA–2015– Identifier 2015–NE–30–AD] Engine Certification Office, FAA, Engine 4076. & Propeller Directorate, 12 New England FAA’s Determination and Requirements RIN 2120–AA64 Executive Park, Burlington, MA 01803; of This Proposed AD Airworthiness Directives; Rolls-Royce phone: 781–238–7772; fax: 781–238– 7199; email: brian.kierstead@faa.gov. This product has been approved by plc Turbofan Engines the aviation authority of the United SUPPLEMENTARY INFORMATION: AGENCY: Federal Aviation Kingdom, and is approved for operation Administration (FAA), DOT. Comments Invited in the United States. Pursuant to our We invite you to send any written bilateral agreement with the European ACTION: Notice of proposed rulemaking relevant data, views, or arguments about Community, EASA has notified us of (NPRM). this proposed AD. Send your comments the unsafe condition described in the SUMMARY: We propose to adopt a new to an address listed under the MCAI. We are proposing this AD airworthiness directive (AD) for certain ADDRESSES section. Include ‘‘Docket No. because we evaluated all information Rolls-Royce plc (RR) RB211–22B and FAA–2015–4076; Directorate Identifier provided by EASA and determined the RB211–524 turbofan engines with low- 2015–NE–30–AD’’ at the beginning of unsafe condition exists and is likely to pressure turbine (LPT) support roller your comments. We specifically invite exist or develop on other products of the bearing, part number (P/N) LK30313 or comments on the overall regulatory, same type design. This proposed AD P/N UL29651, installed. This proposed economic, environmental, and energy would require removal from service of AD was prompted by a report of a aspects of this proposed AD. We will the affected LPT support bearings. breach of the turbine casing and release consider all comments received by the Costs of Compliance of engine debris. This proposed AD closing date and may amend this would require removal of certain LPT We estimate that this proposed AD proposed AD based on those comments. support roller bearings installed in RR affects 9 engines installed on airplanes We will post all comments we RB211–22B and RB211–524 engines. We of U.S. registry. We also estimate it receive, without change, to http:// are proposing this AD to prevent failure would take 0 hours to comply with this www.regulations.gov, including any of the LPT support roller bearing, loss proposed AD since the proposed actions personal information you provide. We of radial position following LPT blade required by the AD would be performed will also post a report summarizing each failure, uncontained part release, during a shop visit, when major engine substantive verbal contact with FAA damage to the engine, and damage to the flanges are separated, which requires personnel concerning this proposed AD. airplane. the removal of the LPT support roller Discussion bearing. Therefore, no additional time is DATES: We must receive comments on needed to remove it. Parts would cost this proposed AD by February 8, 2016. The European Aviation Safety Agency (EASA), which is the Technical Agent about $8,184 per engine. The average ADDRESSES: You may send comments by labor rate is $85 per hour. Based on for the Member States of the European any of the following methods: Community, has issued EASA AD 2015– these figures, we estimate the cost of • Federal eRulemaking Portal: Go to 0187, dated September 9, 2015 (referred this proposed AD on U.S. operators to http://www.regulations.gov. Follow the to hereinafter as ‘‘the MCAI’’), to correct be $73,656. instructions for submitting comments. an unsafe condition for the specified • Mail: Docket Management Facility, Authority for This Rulemaking products. The MCAI states: U.S. Department of Transportation, 1200 Title 49 of the United States Code New Jersey Avenue SE., West Building An RB211–524G2–T engine experienced an specifies the FAA’s authority to issue in-service event that resulted in breach of a rules on aviation safety. Subtitle I, Ground Floor, Room W12–140, turbine casing and some release of core Washington, DC 20590–0001. engine debris through a hole in the engine section 106, describes the authority of • Hand Delivery: Deliver to Mail nacelle. The investigation of the event the FAA Administrator. ‘‘Subtitle VII: address above between 9 a.m. and 5 determined the primary cause to have been Aviation Programs,’’ describes in more detail the scope of the Agency’s mstockstill on DSK4VPTVN1PROD with PROPOSALS p.m., Monday through Friday, except fracture and release of a Low Pressure (LP) Federal holidays. turbine stage 2 blade. The blade release authority. • Fax: 202–493–2251. caused secondary damage to the LP turbine, We are issuing this rulemaking under producing significant out-of-balance forces. the authority described in ‘‘Subtitle VII, Examining the AD Docket The event engine was fitted with an LP Part A, Subpart III, Section 44701: turbine support bearing where the roller You may examine the AD docket on retention cage is constructed from two halves General requirements.’’ Under that the Internet at http:// that are riveted together. The LP turbine section, Congress charges the FAA with www.regulations.gov by searching for imbalance resulted in an overload of the LP promoting safe flight of civil aircraft in and locating Docket No. FAA–2015– turbine support bearing and caused air commerce by prescribing regulations VerDate Sep<11>2014 16:34 Dec 08, 2015 Jkt 238001 PO 00000 Frm 00009 Fmt 4702 Sfmt 4702 E:\FR\FM\09DEP1.SGM 09DEP1

Federal Register / Vol. 80, No. 236 / Wednesday, December 9, 2015 / Proposed Rules 76403 for practices, methods, and procedures (c) Applicability www.regulations.gov by searching for and the Administrator finds necessary for This AD applies to Rolls-Royce plc RB211– locating it in Docket No. FAA–2015–4076. safety in air commerce. This regulation 22B–02, RB211–22B (MOD 72–8700), RB211– Issued in Burlington, Massachusetts, on is within the scope of that authority 524B–02, RB211–524B–B–02, RB211–524B2– December 2, 2015. because it addresses an unsafe condition 19, RB211–524B2–B–19, RB211–524B3–02, Colleen M. D’Alessandro, that is likely to exist or develop on RB211–524B4–02, RB211–524B4–D–02, Directorate Manager, Engine & Propeller products identified in this rulemaking RB211–524C2–19, RB211–524C2–B–19, Directorate, Aircraft Certification Service. RB211–524D4–19, RB211–524D4–B–19, action. [FR Doc. 2015–30947 Filed 12–8–15; 8:45 am] RB211–524D4X–19, RB211–524D4X–B–19, Regulatory Findings RB211–524D4–39, RB211–524D4–B–39, BILLING CODE 4910–13–P RB211–524G2–19, RB211–524G3–19, We determined that this proposed AD RB211–524–G2–T–19, RB211–524G3–T–19, would not have federalism implications RB211–524H–36, RB211–524H2–19, RB211– ENVIRONMENTAL PROTECTION under Executive Order 13132. This 524H–T–36, and RB211–524H2–T–19 AGENCY proposed AD would not have a turbofan engines, all serial numbers, with substantial direct effect on the States, on low-pressure turbine (LPT) support roller 40 CFR Part 52 the relationship between the national bearing, part number (P/N) LK30313 or P/N Government and the States, or on the UL29651, installed. [EPA–R05–OAR–2014–0362; FRL–9939–76– Region 5] distribution of power and (d) Reason responsibilities among the various This AD was prompted by a report of a Air Plan Approval; Ohio; Regional levels of government. breach of the turbine casing and release of Haze Glatfelter BART SIP Revision For the reasons discussed above, I engine debris through a hole in the engine certify this proposed regulation: nacelle. We are issuing this AD to prevent AGENCY: Environmental Protection (1) Is not a ‘‘significant regulatory failure of the LPT support roller bearing, loss Agency (EPA). action’’ under Executive Order 12866, of radial position following LPT blade ACTION: Proposed rule. failure, uncontained part release, damage to (2) Is not a ‘‘significant rule’’ under the engine, and damage to the airplane. the DOT Regulatory Policies and SUMMARY: The Environmental Protection Procedures (44 FR 11034, February 26, (e) Actions and Compliance Agency (EPA) is proposing to extend the 1979), Comply with this AD within the compliance date for the Best Available (3) Will not affect intrastate aviation compliance times specified, unless already Retrofit Technology (BART) emission in Alaska to the extent that it justifies done. At the next shop visit or within 24 limits for sulfur dioxide (SO2) at the making a regulatory distinction, and months after the effective date of this AD, P.H. Glatfelter Company (Glatfelter) whichever occurs first, remove from service facility submitted as part of its State (4) Will not have a significant LPT support roller bearing, P/N LK30313 or economic impact, positive or negative, Implementation Plan (SIP) Revision on P/N UL29651, and replace with a part April 14, 2014. Specifically, EPA is on a substantial number of small entities eligible for installation. under the criteria of the Regulatory proposing to extend the compliance Flexibility Act. (f) Installation Prohibition date for the SO2 emission limits After the effective date of this AD, do not applicable to Boilers No. 7 and No. 8 at List of Subjects in 14 CFR Part 39 install an LPT support roller bearing, P/N Glatfelter by 25 months, from December Air transportation, Aircraft, Aviation LK30313 or P/N UL29651, onto any engine. 31, 2014, to January 31, 2017. We have safety, Incorporation by reference, (g) Definition reviewed this SIP revision and Safety. concluded that it meets the For the purpose of this AD, a ‘‘shop visit’’ requirements of the Clean Air Act and is defined as induction of an engine into the The Proposed Amendment the regional haze rule and because shop for maintenance involving the Accordingly, under the authority separation of pairs of major mating engine BART requirements continue to be met. delegated to me by the Administrator, flanges, except that the separation of engine DATES: Comments must be received on the FAA proposes to amend 14 CFR part flanges solely for the purposes of or before January 8, 2016. 39 as follows: transportation without subsequent engine ADDRESSES: Submit your comments, maintenance does not constitute an engine shop visit. identified by Docket ID No. EPA–R05– PART 39—AIRWORTHINESS OAR–2014–0362, by one of the DIRECTIVES (h) Alternative Methods of Compliance following methods: (AMOCs) 1. www.regulations.gov: Follow the ■ 1. The authority citation for part 39 The Manager, Engine Certification Office, on-line instructions for submitting continues to read as follows: FAA, may approve AMOCs for this AD. Use comments. Authority: 49 U.S.C. 106(g), 40113, 44701. the procedures found in 14 CFR 39.19 to 2. Email: aburano.douglas@epa.gov. make your request. You may email your 3. Fax: (312) 408–2279. § 39.13 [Amended] request to: ANE-AD-AMOC@faa.gov. 4. Mail: Douglas Aburano, Chief, ■ 2. The FAA amends § 39.13 by adding (i) Related Information Attainment Planning and Maintenance the following new airworthiness (1) For more information about this AD, Section, Air Programs Branch (AR–18J), directive (AD): contact Brian Kierstead, Aerospace Engineer, U.S. Environmental Protection Agency, Engine Certification Office, FAA, Engine & 77 West Jackson Boulevard, Chicago, mstockstill on DSK4VPTVN1PROD with PROPOSALS Rolls-Royce plc: Docket No. FAA–2015– 4076; Directorate Identifier 2015–NE– Propeller Directorate, 12 New England Illinois 60604. 30–AD. Executive Park, Burlington, MA 01803; 5. Hand Delivery: Douglas Aburano, phone: 781–238–7772; fax: 781–238–7199; (a) Comments Due Date Chief, Attainment Planning and email: brian.kierstead@faa.gov. (2) Refer to MCAI European Aviation Maintenance Section, Air Programs We must receive comments by February 8, 2016. Safety Agency AD 2015–0187, dated Branch (AR–18J), U.S. Environmental September 9, 2015, for more information. Protection Agency, 77 West Jackson (b) Affected ADs You may examine the MCAI in the AD Boulevard, Chicago, Illinois 60604. None. docket on the Internet at http:// Such deliveries are only accepted VerDate Sep<11>2014 16:34 Dec 08, 2015 Jkt 238001 PO 00000 Frm 00010 Fmt 4702 Sfmt 4702 E:\FR\FM\09DEP1.SGM 09DEP1


Document Created: 2015-12-14 13:33:01
Document Modified: 2015-12-14 13:33:01
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 February 8, 2016.
ContactBrian Kierstead, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7772; fax: 781-238-7199; email: [email protected]
FR Citation80 FR 76402 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety
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