Document ID: FAA-2013-0876-0001
Agency: faa
Document Type: Proposed Rule
Title: Airworthiness Directives: Rolls-Royce plc Turbofan Engines
Posted Date: 2014-03-03T05:00Z

[Federal Register Volume 79, Number 41 (Monday, March 3, 2014)]
[Proposed Rules]
[Pages 11722-11723]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2014-04349]

[[Page 11722]]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2013-0876; Directorate Identifier 2013-NE-27-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 Trent 768-60, 772-60, and 772B-60 
turbofan engines. This proposed AD was prompted by an uncontained 
multiple turbine blade failure on an RR RB211 Trent 772B turbofan 
engine. This proposed AD would require modification of the engine by 
removing an electronic engine control (EEC) incorporating EEC software 
standard A14 or earlier and installing an EEC eligible for 
installation. We are proposing this AD to prevent failure of the 
intermediate pressure (IP) turbine disk drive arm or burst of the high 
pressure turbine disk, which could lead to uncontained engine failure 
and damage to the airplane.

DATES: We must receive comments on this proposed AD by May 2, 2014.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov and follow the instructions for sending your 
comments electronically.
     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.
    For service information identified in this proposed AD, contact 
Rolls-Royce plc, Corporate Communications, P.O. Box 31, Derby, England, 
DE248BJ; phone: 011-44-1332-242424; fax: 011-44-1332-249936; email: 
http://www.rolls-royce.com/contact/civil_team.jsp; or Web site: 
https://www.aeromanager.com. You may view this service information at 
the FAA, Engine & Propeller Directorate, 12 New England Executive Park, 
Burlington, MA. For information on the availability of this material at 
the FAA, call 781-238-7125.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2013-
0876; 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 street address for the Docket Operations 
office (phone: 800-647-5527) is the same as the Mail address provided 
in the ADDRESSES section. Comments will be available in the AD docket 
shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Anthony W. Cerra Jr., Aerospace 
Engineer, Engine Certification Office, FAA, Engine & Propeller 
Directorate, 12 New England Executive Park, Burlington, MA 01803; 
phone: 781-238-7128; fax: 781-238-7199; email: anthony.cerra@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-2013-0876; 
Directorate Identifier 2013-NE-27-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. Using the search 
function of the Web site, anyone can find and read the comments in any 
of our dockets, including, if provided, the name of the individual who 
sent the comment (or signed the comment on behalf of an association, 
business, labor union, etc.). You may review the DOT's complete Privacy 
Act Statement in the Federal Register published on April 11, 2000 (65 
FR 19477-78).

Discussion

    The European Aviation Safety Agency (EASA), which is the Technical 
Agent for the Member States of the European Community, has issued EASA 
AD 2013-0190, dated August 20, 2013 (referred to hereinafter as ``the 
MCAI''), to correct an unsafe condition for the specified products. The 
MCAI states:

    An operator of an A330 aeroplane fitted with RR Trent 772B 
engines experienced an engine uncontained multiple turbine blade 
failure. Investigation results showed that High Pressure/
Intermediate Pressure (HP/IP) oil vent tubes may be affected by 
carbon deposit and may also be damaged by their outer heat shields, 
which in this case led to combustion inside the tube. The consequent 
chain of events resulted in an engine internal fire which caused the 
failure of the IP Turbine (IPT) disc drive arm.
    This condition, if not corrected, could lead to uncontained 
multiple turbine blade failures or an HP/IP turbine disc burst, 
possibly resulting in damage to, and reduced control of, the 
aeroplane.

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-
2013-0876.

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 and 
service information referenced above. 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 modification of 
the engine by removing an EEC incorporating EEC software standard A14 
or earlier and installing an EEC eligible for installation.

Costs of Compliance

    We estimate that this proposed AD would affect about 72 engines 
installed on airplanes of U.S. registry. We also estimate that it would 
take about 1 hour per product to comply with this proposed AD. The 
average labor rate is $85 per hour. There are no required parts. Based 
on these figures, we estimate the cost of the proposed AD on U.S. 
operators to be $6,120.

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

[[Page 11723]]

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.
    We prepared a regulatory evaluation of the estimated costs to 
comply with this proposed AD and placed it in the AD docket.

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. Amend Sec.  39.13 by adding the following new airworthiness 
directive (AD):

Rolls-Royce plc: Docket No. FAA-2013-0876; Directorate Identifier 
2013-NE-27-AD.

(a) Comments Due Date

    We must receive comments by May 2, 2014.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to all Rolls-Royce plc (RR) RB211 Trent 768-60, 
772-60, and 772B-60 turbofan engines prior to engine serial number 
42066.

(d) Reason

    This AD was prompted by an uncontained multiple turbine blade 
failure on an RR RB211 Trent 772B turbofan engine. We are issuing 
this AD to prevent failure of the intermediate pressure turbine disc 
drive arm or burst of the high pressure turbine disk, which could 
lead to uncontained engine failure and damage to the airplane.

(e) Actions and Compliance

    After the effective date of this AD, at the next engine shop 
visit or by December 31, 2018, whichever occurs first, modify the 
engine by removing any electronic engine control (EEC) that 
incorporates EEC software standard A14 or earlier and installing an 
EEC eligible for installation.

(f) Installation Prohibition

    After modification of an engine as required by paragraph (e) of 
this AD, do not install an EEC with software standard A14 or earlier 
into that engine.

(g) Definition

    (1) For the purposes of this AD, an ``engine shop visit'' is the 
induction of an engine into the shop for maintenance involving the 
separation of pairs of major mating engine 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.
    (2) For the purposes of this AD, an EEC ``eligible for 
installation'' in paragraph (e) of this AD is any EEC that does not 
contain software standard A14 or earlier.

(h) Credit for Previous Actions

    If before the effective date of this AD you removed from an 
engine any EEC that had EEC software standard A14 or earlier and 
your engine no longer has an EEC with software standard A14 or 
earlier, you have met the requirements of this AD.

(i) Alternative Methods of Compliance (AMOCs)

    The Manager, Engine Certification Office, FAA, may approve AMOCs 
to this AD. Use the procedures found in 14 CFR 39.19 to make your 
request.

(j) Related Information

    (1) For more information about this AD, contact Anthony W. 
Cerra, Jr., Aerospace Engineer, Engine Certification Office, FAA, 
Engine & Propeller Directorate, 12 New England Executive Park, 
Burlington, MA 01803; phone: 781-238-7128; fax: 781-238-7199; email: 
anthony.cerra@faa.gov.
    (2) Refer to MCAI European Aviation Safety Agency AD 2013-0190, 
dated August 20, 2013, 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-2013-0876.
    (3) RR Alert Service Bulletin No. RB.211-73-AG829, dated April 
18, 2012, which is not incorporated by reference in this AD, can be 
obtained from Rolls-Royce plc using the contact information in 
paragraph (j)(4) of this AD.
    (4) For service information identified in this AD, contact 
Rolls-Royce plc, Corporate Communications, P.O. Box 31, Derby, 
England, DE248BJ; phone: 011-44-1332-242424; fax: 011-44-1332-
249936; email: http://www.rolls-royce.com/contact/civil_team.jsp; 
or Web site: https://www.aeromanager.com.
    (5) You may view this service information at the FAA, Engine & 
Propeller Directorate, 12 New England Executive Park, Burlington, 
MA. For information on the availability of this material at the FAA, 
call 781-238-7125.

    Issued in Burlington, Massachusetts, on February 20, 2014.
Colleen M. D'Alessandro,
Assistant Directorate Manager, Engine & Propeller Directorate, Aircraft 
Certification Service.
[FR Doc. 2014-04349 Filed 2-28-14; 8:45 am]
BILLING CODE 4910-13-P