Airworthiness Directives; Rolls-Royce plc (RR) RB211-Trent 900 Series Turbofan Engines, 49368-49370 [2010-18730]
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Federal Register / Vol. 75, No. 156 / Friday, August 13, 2010 / Rules and Regulations
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Page No.
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(1) The Director of the Federal Register
approved the incorporation by reference of
this service information under 5 U.S.C.
552(a) and 1 CFR part 51.
(2) For service information identified in
this AD, contact BAE Systems (Operations)
Limited, Customer Information Department,
Prestwick International Airport, Ayrshire,
KA9 2RW, Scotland, United Kingdom;
telephone +44 1292 675207; fax +44 1292
675704; e-mail
RApublications@baesystems.com; Internet
https://www.baesystems.com/Businesses/
RegionalAircraft/index.htm.
(3) You may review copies of the service
information at the FAA, Transport Airplane
Directorate, 1601 Lind Avenue, SW., Renton,
Washington. For information on the
availability of this material at the FAA, call
425–227–1221.
(4) You may also review copies of the
service information that is incorporated by
reference at the National Archives and
Records Administration (NARA). For
information on the availability of this
material at NARA, call 202–741–6030, or go
to: https://www.archives.gov/federal_register/
code_of_federal_regulations/
ibr_locations.html.
Wear, beyond Engine Manual limits, has
been identified on the abutment faces of the
splines on the Trent 900 Intermediate
Pressure (IP) shaft rigid coupling on several
engines during strip. The shaft to coupling
spline interface provides the means of
controlling the turbine axial setting and wear
through of the splines would permit the IP
turbine to move rearwards.
Rearward movement of the IP turbine
would enable contact with static turbine
components and would result in loss of
engine performance with potential for inflight shut down, oil migration and oil fire
below the LP turbine discs prior to sufficient
indication resulting in loss of LP turbine disc
integrity.
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule; request for
comments.
We are issuing this AD to detect
rearward movement of the IP turbine,
which could result in loss of disc
integrity, an uncontained failure of the
engine, and damage to the airplane.
DATES: This AD becomes effective
September 17, 2010.
We must receive comments on this
AD by September 13, 2010.
The Director of the Federal Register
approved the incorporation by reference
of Rolls-Royce Trent 900 Series
Propulsion Systems Alert NonModification Service Bulletin (NMSB)
RB.211–72–AG329, Revision 1, dated
January 13, 2010, listed in the AD as of
September 17, 2010.
ADDRESSES: You may send comments by
any of the following methods:
• Federal eRulemaking Portal: Go to
https://www.regulations.gov and follow
the instructions for sending your
comments electronically.
• Mail: 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.
We are adopting a new
airworthiness directive (AD) for the
products listed above. This AD results
from mandatory continuing
airworthiness information (MCAI)
Examining the AD Docket
You may examine the AD docket on
the Internet at https://
www.regulations.gov; or in person at the
Docket Operations office between 9 a.m.
Issued in Renton, Washington, on July 28,
2010.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. 2010–19329 Filed 8–12–10; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2010–0748; Directorate
Identifier 2010–NE–13–AD; Amendment 39–
16384; AD 2010–16–07]
RIN 2120–AA64
Airworthiness Directives; Rolls-Royce
plc (RR) RB211–Trent 900 Series
Turbofan Engines
AGENCY:
erowe on DSK5CLS3C1PROD with RULES
issued by an aviation authority of
another country to identify and correct
an unsafe condition on an aviation
product. The MCAI describes the unsafe
condition as:
SUMMARY:
VerDate Mar<15>2010
15:00 Aug 12, 2010
Jkt 220001
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Date
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4
3
1
2
June 15, 1990.
August 1, 1989.
August 10, 1988.
June 27, 1989.
and 5 p.m., Monday through Friday,
except Federal holidays. The AD docket
contains this AD, the regulatory
evaluation, any comments received, and
other information. The street address for
the Docket Operations office (telephone
(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: Ian
Dargin, Aerospace Engineer, Engine
Certification Office, FAA, Engine and
Propeller Directorate, 12 New England
Executive Park; Burlington, MA 01803;
e-mail: ian.dargin@faa.gov; telephone
(781) 238–7178; fax (781) 238–7199.
SUPPLEMENTARY INFORMATION:
Discussion
The European Aviation Safety Agency
(EASA), which is the Technical Agent
for the Member States of the European
Community, has issued EASA
Airworthiness Directive 2010–0008,
dated January 15, 2010 (referred to after
this as ‘‘the MCAI’’), to correct an unsafe
condition for the specified products.
The MCAI states:
Wear, beyond Engine Manual limits, has
been identified on the abutment faces of the
splines on the Trent 900 Intermediate
Pressure (IP) shaft rigid coupling on several
engines during strip. The shaft to coupling
spline interface provides the means of
controlling the turbine axial setting and wear
through of the splines would permit the IP
turbine to move rearwards.
Rearward movement of the IP turbine
would enable contact with static turbine
components and would result in loss of
engine performance with potential for inflight shut down, oil migration and oil fire
below the LP turbine discs prior to sufficient
indication resulting in loss of LP turbine disc
integrity.
This AD requires inspection of the IP shaft
coupling splines and, depending on the
results, requires further repetitive inspections
or corrective actions.
You may obtain further information by
examining the MCAI in the AD docket.
Relevant Service Information
Rolls-Royce plc has issued RB211
Trent 900 Series Propulsion Systems
Alert NMSB RB.211–72–AG329,
Revision 1, dated January 13, 2010. The
actions described in this service
information are intended to correct the
E:\FR\FM\13AUR1.SGM
13AUR1
Federal Register / Vol. 75, No. 156 / Friday, August 13, 2010 / Rules and Regulations
unsafe condition identified in the
MCAI.
FAA’s Determination and Requirements
of This 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 United
Kingdom, they have notified us of the
unsafe condition described in the MCAI
and service information referenced
above. We are issuing this AD because
we evaluated all information provided
by the United Kingdom, and determined
the unsafe condition exists and is likely
to exist or develop on other products of
the same type design.
erowe on DSK5CLS3C1PROD with RULES
FAA’s Determination of the Effective
Date
Since no domestic operators use this
product, notice and opportunity for
public comment before issuing this AD
are unnecessary. Therefore, we are
adopting this regulation immediately.
Comments Invited
This AD is a final rule that involves
requirements affecting flight safety, and
we did not precede it by notice and
opportunity for public comment. We
invite you to send any written relevant
data, views, or arguments about this AD.
Send your comments to an address
listed under the ADDRESSES section.
Include ‘‘Docket No. FAA–2010–0748;
Directorate Identifier 2010–NE–13–AD’’
at the beginning of your comments. We
specifically invite comments on the
overall regulatory, economic,
environmental, and energy aspects of
this AD. We will consider all comments
received by the closing date and may
amend this AD because of those
comments.
We will post all comments we
receive, without change, to https://
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 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).
Authority for This Rulemaking
Title 49 of the United States Code
specifies the FAA’s authority to issue
VerDate Mar<15>2010
15:00 Aug 12, 2010
Jkt 220001
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 AD will not
have federalism implications under
Executive Order 13132. This AD will
not have a substantial direct effect on
the States, on the relationship between
the national government and the States,
or on the distribution of power and
responsibilities among the various
levels of government.
For the reasons discussed above, I
certify this AD:
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); and
3. 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 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.
Adoption of the Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 14 CFR part 39 as
follows:
■
PART 39—AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
PO 00000
Frm 00019
Fmt 4700
Sfmt 4700
§ 39.13
49369
[Amended]
2. The FAA amends § 39.13 by adding
the following new AD:
■
2010–16–07 Rolls-Royce plc (RR):
Amendment 39–16384.; Docket No.
FAA–2010–0748; Directorate Identifier
2010–NE–13–AD.
Effective Date
(a) This airworthiness directive (AD)
becomes effective September 17, 2010.
Affected ADs
(b) None.
Applicability
(c) This AD applies to RR model RB211–
Trent 970–84, 970B–84, 972–84, 972B–84,
977–84, 977B–84, and 980–84 turbofan
engines. These engines are installed on, but
not limited to, Airbus A380 series airplanes.
Reason
(d) European Aviation Safety Agency
(EASA) AD No. 2010–0008, dated January 15,
2010, states:
Wear, beyond Engine Manual limits, has
been identified on the abutment faces of the
splines on the Trent 900 Intermediate
Pressure (IP) shaft rigid coupling on several
engines during strip. The shaft to coupling
spline interface provides the means of
controlling the turbine axial setting and wear
through of the splines would permit the IP
turbine to move rearwards.
Rearward movement of the IP turbine
would enable contact with static turbine
components and would result in loss of
engine performance with potential for inflight shut down, oil migration and oil fire
below the LP turbine discs prior to sufficient
indication resulting in loss of LP turbine disc
integrity.
We are issuing this AD to detect rearward
movement of the IP turbine, which could
result in loss of disc integrity, an
uncontained failure of the engine, and
damage to the airplane.
Actions and Compliance
(e) Unless already done, do the following
actions.
On-Wing Borescope Inspection
(1) Inspect the IP shaft coupling splines
using section 3.A of RR RB211 Trent 900
Series Propulsion Systems Alert NonModification Service Bulletin (NMSB)
RB.211–72–AG329, Revision 1, dated January
13, 2010, before accumulating 400 cyclessince-new or within 150 cycles-in-service
(CIS) after the effective date of this AD,
whichever occurs later.
(2) If the coupling, P/N FW33264, was
replaced with a new coupling, P/N FW33264,
during any shop visit, then you may use the
life since that shop visit in place of engine
time since new to establish the inspection
threshold.
(3) Use the inspection results and actions
compliance times or specified in Table 1 of
this AD to disposition the engine or to
determine the interval for the repetitive
inspections.
E:\FR\FM\13AUR1.SGM
13AUR1
49370
Federal Register / Vol. 75, No. 156 / Friday, August 13, 2010 / Rules and Regulations
TABLE 1—ON-WING BORESCOPE INSPECTION—FURTHER ACTION AND REPETITIVE INSPECTION INTERVALS
Condition measured spline crest in accordance
with section 3.A of Rolls-Royce alert NMSB
RB.211–72–AG329, Revision 1, dated January
13, 2010, is:
(i) Less than 0.5 mm with no material remaining
(ii) Less than 0.5 mm with some material remaining.
(iii) Equal to or more than 0.5 mm but less than
1 mm.
(iv) Equal to or more than 1 mm but less than
1.5 mm.
(v) Equal to or more than 1.5 mm but less than
2 mm.
(vi) Equal to or more than 2 mm but less than
2.4 mm.
(vii) Equal to or more than 2.4 mm ....................
Note 1: The nominal unworn dimension of
the spline crest is 2.65 mm.
In-Shop Replacement and Inspection
(4) At the next shop visit after the effective
date of this AD perform the following:
(i) Replace any IP shaft coupling that was
previously borescope inspected in
accordance with paragraph (e)(1) of this AD
and put on a reduced re-inspection interval
in accordance with paragraphs (e)(3)(i)
through (e)(3)(vii) of this AD.
(ii) Inspect all other IP shaft coupling
splines using paragraphs 3.B.(2) or 3.B.(3) of
RR RB211 Trent 900 Series Propulsion
Systems Alert NMSB RB.211–72–AG329,
Revision 1, dated January 13, 2010.
Definitions
(5) For the purposes of this AD, a 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.
Compliance time/repetitive interval (not to exceed) flight cycles since last inspection
Action
Remove the engine ..........................................
Remove the engine ..........................................
Before next flight.
Within 10 flight cycles.
Repeat inspection ............................................
Within 50 flight cycles.
Repeat inspection ............................................
Within 100 flight cycles.
Repeat inspection ............................................
Within 200 flight cycles.
Repeat inspection ............................................
Within 300 flight cycles.
Repeat inspection ............................................
Within 400 flight cycles.
do the actions required by this AD, unless the
AD specifies otherwise.
(1) The Director of the Federal Register
approved the incorporation by reference of
this service information under 5 U.S.C.
552(a) and 1 CFR part 51.
(2) For service information identified in
this AD, contact Rolls-Royce plc, P.O. Box
31, Derby, DE24 8BJ, United Kingdom;
telephone 044 1332 242424; fax 044 1332
249936.
(3) You may review copies at the FAA,
New England Region, 12 New England
Executive Park, Burlington, MA; or at the
National Archives and Records
Administration (NARA). For information on
the availability of this material at NARA, call
(202) 741–6030, or go to: https://www.
archives.gov/federal-register/cfr/ibrlocations.html.
Issued in Burlington, Massachusetts, on
July 26, 2010.
Peter A. White,
Assistant Manager, Engine and Propeller
Directorate, Aircraft Certification Service.
[FR Doc. 2010–18730 Filed 8–12–10; 8:45 am]
BILLING CODE 4910–13–P
Other FAA AD Provisions
(g) Alternative Methods of Compliance
(AMOCs): The Manager, Engine Certification
Office, FAA, has the authority to approve
AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19.
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FAA AD Differences
(f) None.
DEPARTMENT OF TRANSPORTATION
Material Incorporated by Reference
(j) You must use Rolls-Royce RB211 Trent
900 Series Propulsion Systems Alert NonModification Service Bulletin RB.211–72–
AG329 Revision 1, dated January 13, 2010 to
15:00 Aug 12, 2010
Surface defects were visually detected on
the rudder of an [Airbus] A319 and an A321
in-service aeroplane. Investigation has
determined that the defects reported on both
rudders corresponded to areas that had been
reworked in production. The investigation
confirmed that the defects were the result of
de-bonding between the skin and honeycomb
core. Such reworks were also performed on
some rudders fitted on A310 and A300–600
aeroplanes.
An extended de-bonding, if not detected
and corrected, may degrade the structural
integrity of the rudder. The loss of the rudder
leads to degradation of the handling qualities
and reduces the controllability of the
aeroplane.
*
Related Information
(h) Refer to MCAI EASA Airworthiness
Directive 2010–0008, dated January 15, 2010,
for related information.
(i) Contact Ian Dargin, Aerospace Engineer,
Engine Certification Office, FAA, Engine and
Propeller Directorate, 12 New England
Executive Park, Burlington, MA 01803; email: ian.dargin@faa.gov; telephone (781)
238–7178; fax (781) 238–7199, for more
information about this AD.
VerDate Mar<15>2010
We are adopting a new
airworthiness directive (AD) for the
products listed above. This AD results
from mandatory continuing
airworthiness information (MCAI)
originated by an aviation authority of
another country to identify and correct
an unsafe condition on an aviation
product. The MCAI describes the unsafe
condition as:
SUMMARY:
Jkt 220001
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2010–0281; Directorate
Identifier 2009–NM–184–AD; Amendment
39–16390; AD 2010–16–13]
RIN 2120–AA64
Airworthiness Directives; Airbus Model
A300 B4–600, B4–600R, and F4–600R
Series Airplanes, and Model C4–605R
Variant F airplanes (Collectively Called
A300–600 series airplanes); and A310
Series Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
AGENCY:
PO 00000
Frm 00020
Fmt 4700
Sfmt 4700
*
*
*
*
We are issuing this AD to require
actions to correct the unsafe condition
on these products.
DATES: This AD becomes effective
September 17, 2010. The Director of the
Federal Register approved the
incorporation by reference of certain
publications listed in this AD as of
September 17, 2010.
ADDRESSES: You may examine the AD
docket on the Internet at https://
www.regulations.gov or in person at the
U.S. Department of Transportation,
Docket Operations, M–30, West
Building Ground Floor, Room W12–140,
1200 New Jersey Avenue, SE.,
Washington, DC.
FOR FURTHER INFORMATION CONTACT: Dan
Rodina, Aerospace Engineer,
International Branch, ANM–116,
Transport Airplane Directorate, FAA,
E:\FR\FM\13AUR1.SGM
13AUR1
]]>Agencies
[Federal Register Volume 75, Number 156 (Friday, August 13, 2010)]
[Rules and Regulations]
[Pages 49368-49370]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2010-18730]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2010-0748; Directorate Identifier 2010-NE-13-AD;
Amendment 39-16384; AD 2010-16-07]
RIN 2120-AA64
Airworthiness Directives; Rolls-Royce plc (RR) RB211-Trent 900
Series Turbofan Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule; request for comments.
-----------------------------------------------------------------------
SUMMARY: We are adopting a new airworthiness directive (AD) for the
products listed above. This AD results from mandatory continuing
airworthiness information (MCAI) issued by an aviation authority of
another country to identify and correct an unsafe condition on an
aviation product. The MCAI describes the unsafe condition as:
Wear, beyond Engine Manual limits, has been identified on the
abutment faces of the splines on the Trent 900 Intermediate Pressure
(IP) shaft rigid coupling on several engines during strip. The shaft
to coupling spline interface provides the means of controlling the
turbine axial setting and wear through of the splines would permit
the IP turbine to move rearwards.
Rearward movement of the IP turbine would enable contact with
static turbine components and would result in loss of engine
performance with potential for in-flight shut down, oil migration
and oil fire below the LP turbine discs prior to sufficient
indication resulting in loss of LP turbine disc integrity.
We are issuing this AD to detect rearward movement of the IP turbine,
which could result in loss of disc integrity, an uncontained failure of
the engine, and damage to the airplane.
DATES: This AD becomes effective September 17, 2010.
We must receive comments on this AD by September 13, 2010.
The Director of the Federal Register approved the incorporation by
reference of Rolls-Royce Trent 900 Series Propulsion Systems Alert Non-
Modification Service Bulletin (NMSB) RB.211-72-AG329, Revision 1, dated
January 13, 2010, listed in the AD as of September 17, 2010.
ADDRESSES: You may send comments by any of the following methods:
Federal eRulemaking Portal: Go to https://www.regulations.gov and follow the instructions for sending your
comments electronically.
Mail: 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 https://www.regulations.gov; 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 AD, the regulatory evaluation,
any comments received, and other information. The street address for
the Docket Operations office (telephone (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: Ian Dargin, Aerospace Engineer, Engine
Certification Office, FAA, Engine and Propeller Directorate, 12 New
England Executive Park; Burlington, MA 01803; e-mail:
ian.dargin@faa.gov; telephone (781) 238-7178; fax (781) 238-7199.
SUPPLEMENTARY INFORMATION:
Discussion
The European Aviation Safety Agency (EASA), which is the Technical
Agent for the Member States of the European Community, has issued EASA
Airworthiness Directive 2010-0008, dated January 15, 2010 (referred to
after this as ``the MCAI''), to correct an unsafe condition for the
specified products. The MCAI states:
Wear, beyond Engine Manual limits, has been identified on the
abutment faces of the splines on the Trent 900 Intermediate Pressure
(IP) shaft rigid coupling on several engines during strip. The shaft
to coupling spline interface provides the means of controlling the
turbine axial setting and wear through of the splines would permit
the IP turbine to move rearwards.
Rearward movement of the IP turbine would enable contact with
static turbine components and would result in loss of engine
performance with potential for in-flight shut down, oil migration
and oil fire below the LP turbine discs prior to sufficient
indication resulting in loss of LP turbine disc integrity.
This AD requires inspection of the IP shaft coupling splines
and, depending on the results, requires further repetitive
inspections or corrective actions.
You may obtain further information by examining the MCAI in the AD
docket.
Relevant Service Information
Rolls-Royce plc has issued RB211 Trent 900 Series Propulsion
Systems Alert NMSB RB.211-72-AG329, Revision 1, dated January 13, 2010.
The actions described in this service information are intended to
correct the
[[Page 49369]]
unsafe condition identified in the MCAI.
FAA's Determination and Requirements of This 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 United Kingdom, they have
notified us of the unsafe condition described in the MCAI and service
information referenced above. We are issuing this AD because we
evaluated all information provided by the United Kingdom, and
determined the unsafe condition exists and is likely to exist or
develop on other products of the same type design.
FAA's Determination of the Effective Date
Since no domestic operators use this product, notice and
opportunity for public comment before issuing this AD are unnecessary.
Therefore, we are adopting this regulation immediately.
Comments Invited
This AD is a final rule that involves requirements affecting flight
safety, and we did not precede it by notice and opportunity for public
comment. We invite you to send any written relevant data, views, or
arguments about this AD. Send your comments to an address listed under
the ADDRESSES section. Include ``Docket No. FAA-2010-0748; Directorate
Identifier 2010-NE-13-AD'' at the beginning of your comments. We
specifically invite comments on the overall regulatory, economic,
environmental, and energy aspects of this AD. We will consider all
comments received by the closing date and may amend this AD because of
those comments.
We will post all comments we receive, without change, to https://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 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).
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 AD will not have federalism implications
under Executive Order 13132. This AD will not have a substantial direct
effect on the States, on the relationship between the national
government and the States, or on the distribution of power and
responsibilities among the various levels of government.
For the reasons discussed above, I certify this AD:
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); and
3. 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 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.
Adoption of the Amendment
0
Accordingly, under the authority delegated to me by the Administrator,
the FAA amends 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 AD:
2010-16-07 Rolls-Royce plc (RR): Amendment 39-16384.; Docket No.
FAA-2010-0748; Directorate Identifier 2010-NE-13-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective
September 17, 2010.
Affected ADs
(b) None.
Applicability
(c) This AD applies to RR model RB211-Trent 970-84, 970B-84,
972-84, 972B-84, 977-84, 977B-84, and 980-84 turbofan engines. These
engines are installed on, but not limited to, Airbus A380 series
airplanes.
Reason
(d) European Aviation Safety Agency (EASA) AD No. 2010-0008,
dated January 15, 2010, states:
Wear, beyond Engine Manual limits, has been identified on the
abutment faces of the splines on the Trent 900 Intermediate Pressure
(IP) shaft rigid coupling on several engines during strip. The shaft
to coupling spline interface provides the means of controlling the
turbine axial setting and wear through of the splines would permit
the IP turbine to move rearwards.
Rearward movement of the IP turbine would enable contact with
static turbine components and would result in loss of engine
performance with potential for in-flight shut down, oil migration
and oil fire below the LP turbine discs prior to sufficient
indication resulting in loss of LP turbine disc integrity.
We are issuing this AD to detect rearward movement of the IP
turbine, which could result in loss of disc integrity, an
uncontained failure of the engine, and damage to the airplane.
Actions and Compliance
(e) Unless already done, do the following actions.
On-Wing Borescope Inspection
(1) Inspect the IP shaft coupling splines using section 3.A of
RR RB211 Trent 900 Series Propulsion Systems Alert Non-Modification
Service Bulletin (NMSB) RB.211-72-AG329, Revision 1, dated January
13, 2010, before accumulating 400 cycles-since-new or within 150
cycles-in-service (CIS) after the effective date of this AD,
whichever occurs later.
(2) If the coupling, P/N FW33264, was replaced with a new
coupling, P/N FW33264, during any shop visit, then you may use the
life since that shop visit in place of engine time since new to
establish the inspection threshold.
(3) Use the inspection results and actions compliance times or
specified in Table 1 of this AD to disposition the engine or to
determine the interval for the repetitive inspections.
[[Page 49370]]
Table 1--On-Wing Borescope Inspection--Further Action and Repetitive
Inspection Intervals
------------------------------------------------------------------------
Condition measured spline
crest in accordance with Compliance time/
section 3.A of Rolls-Royce repetitive interval
alert NMSB RB.211-72-AG329, Action (not to exceed)
Revision 1, dated January flight cycles since
13, 2010, is: last inspection
------------------------------------------------------------------------
(i) Less than 0.5 mm with no Remove the engine... Before next flight.
material remaining.
(ii) Less than 0.5 mm with Remove the engine... Within 10 flight
some material remaining. cycles.
(iii) Equal to or more than Repeat inspection... Within 50 flight
0.5 mm but less than 1 mm. cycles.
(iv) Equal to or more than 1 Repeat inspection... Within 100 flight
mm but less than 1.5 mm. cycles.
(v) Equal to or more than Repeat inspection... Within 200 flight
1.5 mm but less than 2 mm. cycles.
(vi) Equal to or more than 2 Repeat inspection... Within 300 flight
mm but less than 2.4 mm. cycles.
(vii) Equal to or more than Repeat inspection... Within 400 flight
2.4 mm. cycles.
------------------------------------------------------------------------
Note 1: The nominal unworn dimension of the spline crest is
2.65 mm.
In-Shop Replacement and Inspection
(4) At the next shop visit after the effective date of this AD
perform the following:
(i) Replace any IP shaft coupling that was previously borescope
inspected in accordance with paragraph (e)(1) of this AD and put on
a reduced re-inspection interval in accordance with paragraphs
(e)(3)(i) through (e)(3)(vii) of this AD.
(ii) Inspect all other IP shaft coupling splines using
paragraphs 3.B.(2) or 3.B.(3) of RR RB211 Trent 900 Series
Propulsion Systems Alert NMSB RB.211-72-AG329, Revision 1, dated
January 13, 2010.
Definitions
(5) For the purposes of this AD, a 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.
FAA AD Differences
(f) None.
Other FAA AD Provisions
(g) Alternative Methods of Compliance (AMOCs): The Manager,
Engine Certification Office, FAA, has the authority to approve AMOCs
for this AD, if requested using the procedures found in 14 CFR
39.19.
Related Information
(h) Refer to MCAI EASA Airworthiness Directive 2010-0008, dated
January 15, 2010, for related information.
(i) Contact Ian Dargin, Aerospace Engineer, Engine Certification
Office, FAA, Engine and Propeller Directorate, 12 New England
Executive Park, Burlington, MA 01803; e-mail: ian.dargin@faa.gov;
telephone (781) 238-7178; fax (781) 238-7199, for more information
about this AD.
Material Incorporated by Reference
(j) You must use Rolls-Royce RB211 Trent 900 Series Propulsion
Systems Alert Non-Modification Service Bulletin RB.211-72-AG329
Revision 1, dated January 13, 2010 to do the actions required by
this AD, unless the AD specifies otherwise.
(1) The Director of the Federal Register approved the
incorporation by reference of this service information under 5
U.S.C. 552(a) and 1 CFR part 51.
(2) For service information identified in this AD, contact
Rolls-Royce plc, P.O. Box 31, Derby, DE24 8BJ, United Kingdom;
telephone 044 1332 242424; fax 044 1332 249936.
(3) You may review copies at the FAA, New England Region, 12 New
England Executive Park, Burlington, MA; or at the National Archives
and Records Administration (NARA). For information on the
availability of this material at NARA, call (202) 741-6030, or go
to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued in Burlington, Massachusetts, on July 26, 2010.
Peter A. White,
Assistant Manager, Engine and Propeller Directorate, Aircraft
Certification Service.
[FR Doc. 2010-18730 Filed 8-12-10; 8:45 am]
BILLING CODE 4910-13-P
