Airworthiness Directives; Turbomeca Arrius 2F Turboshaft Engines, 49236-49238 [E7-17003]
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49236
§ 121.3
Federal Register / Vol. 72, No. 166 / Tuesday, August 28, 2007 / Proposed Rules
VS select agents and toxins
*
*
*
*
*
(b) VS select agents and toxins:
African horse sickness virus;
African swine fever virus;
Akabane virus;
Avian influenza virus (highly
pathogenic);
Bluetongue virus (exotic);
Bovine spongiform encephalopathy
agent;
Camel pox virus;
Classical swine fever virus;
Ehrlichia ruminantium (Heartwater);
Foot-and-mouth disease virus;
Goat pox virus;
Japanese encephalitis virus;
Lumpy skin disease virus;
Malignant catarrhal fever virus
(Alcelaphine herpesvirus type 1);
Menangle virus;
Mycoplasma capricolum subspecies
capripneumoniae (contagious
caprine pleuropneumonia);
Mycoplasma mycoides subspecies
mycoides small colony (MmmSC)
(contagious bovine
pleuropneumonia);
Peste des petits ruminants virus;
Rinderpest virus; Sheep pox virus;
Swine vesicular disease virus;
Vesicular stomatitis virus (exotic).
Virulent Newcastle disease virus 4
*
*
*
*
*
5. Section 121.4 is amended as
follows:
a. By revising paragraph (b) to read as
set forth below.
b. In paragraphs (c) and (d), by
redesignating footnotes 3 and 4 as
footnotes 4 and 5, respectively.
c. By removing paragraph(d)(3).
d. In paragraph (f)(3)(i), by removing
the words ‘‘Botulinum neurotoxins,’’
and ‘‘Francisella tularensis,’’.
§ 121.4
Overlap select agents and toxins.
*
*
*
*
*
(b) Overlap select agents and toxins:
Bacillus anthracis;
Brucella abortus;
Brucella melitensis;
Brucella suis;
Burkholderia mallei;
Burkholderia pseudomallei;
Hendra virus;
Nipah virus;
Rift Valley fever virus;
Venezuelan equine encephalitis virus.
*
*
*
*
*
rwilkins on PROD1PC63 with PROPOSALS-1
§ 121.5
[Amended]
6. In § 121.5, paragraph (a)(3)(i) is
amended by removing the words
4 A virulent Newcastle disease virus (avian
paramyxovirus serotype 1) has an intracerebral
pathogenicity index in day-old chicks (Gallus
gallus) of 0.7 or greater or having an amino acid
sequence at the fusion (F) protein cleavage site that
is consistent with virulent strains of Newcastle
disease virus.
VerDate Aug<31>2005
17:17 Aug 27, 2007
Jkt 211001
‘‘Newcastle disease virus (velogenic)’’
and adding the words ‘‘virulent
Newcastle disease virus’’ in their place.
§ 121.6
[Amended]
7. Section 121.6, paragraph (a)(3)(i) is
amended by removing the words
‘‘Botulinum neurotoxins,’’ and
‘‘Francisella tularensis,’’.
§§ 121.7 and 121.8
[Amended]
8. Sections 121.7 and 121.8 are
amended by redesignating footnotes 5,
6, and 7 as footnotes 6, 7, and 8,
respectively.
§ 121.9
[Amended]
9. In § 121.9, paragraph (c)(1) is
amended by removing the words
‘‘Botulinum neurotoxins,’’ and
‘‘Francisella tularensis,’’, and by
removing the words ‘‘Newcastle disease
virus (velogenic)’’ and adding the words
‘‘virulent Newcastle disease virus’’ in
their place.
turboshaft engines. The MCAI states the
following:
This AD is issued following a case of noncommanded in-flight engine shutdown
which occurred on an Arrius 2F turboshaft
engine, following the seizing of the gas
generator. The result may be an emergency
autorotation landing, or, at worst, an
accident.
Investigations of this event have revealed
that the seizing of the gas generator was
caused by the fracture of the separator cage
of the gas generator front bearing, due to
high-cycle fatigue cracks initiated in the
lubrication slots of the separator cage.
We are proposing this AD to prevent
uncommanded shutdown of the engine,
which could lead to an accident.
DATES: We must receive comments on
this proposed AD by September 27,
2007.
Done in Washington, DC, this 22nd day of
August 2007.
Elizabeth E. Gaston,
Acting Administrator, Animal and Plant
Health Inspection Service.
[FR Doc. E7–17039 Filed 8–27–07; 8:45 am]
You may send comments by
any of the following methods:
• DOT Docket Web Site: Go to
https://dms.dot.gov and follow the
instructions for sending your comments
electronically.
• 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.
• Fax: (202) 493–2251.
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the
instructions for submitting comments.
BILLING CODE 3410–34–P
Examining the AD Docket
§§ 121.12 through 121.16
[Amended]
10. Sections 121.12 through 121.16
are amended by redesignating footnotes
8 through 13 as footnotes 9 through 14,
respectively.
§ 121.20
[Amended]
11. Section 121.20 is amended by
redesignating footnote 14 as footnote 15.
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2007–28053; Directorate
Identifier 2007–NE–18–AD]
RIN 2120–AA64
Airworthiness Directives; Turbomeca
Arrius 2F Turboshaft Engines
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
SUMMARY: We propose to adopt a new
airworthiness directive (AD) for the
products listed above. This proposed
AD results from mandatory continuing
airworthiness information (MCAI)
provided by the aviation authority of
France to identify and correct an unsafe
condition on Turbomeca Arrius 2F
PO 00000
Frm 00006
Fmt 4702
Sfmt 4702
ADDRESSES:
You may examine the AD docket on
the Internet at https://dms.dot.gov; 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 (telephone (800) 647–
5527) is in the ADDRESSES section.
Comments will be available in the AD
docket shortly after receipt.
FOR FURTHER INFORMATION CONTACT:
Christopher Spinney, Aerospace
Engineer, Engine Certification Office,
FAA, Engine and Propeller Directorate,
12 New England Executive Park,
Burlington, MA 01803; e-mail:
Christopher.spinney@faa.gov; telephone
(781) 238–7175, fax (781) 238–7199.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written
relevant data, views, or arguments about
E:\FR\FM\28AUP1.SGM
28AUP1
Federal Register / Vol. 72, No. 166 / Tuesday, August 28, 2007 / Proposed Rules
this proposed AD. Send your comments
to an address listed under the
ADDRESSES section. Include ‘‘Docket No.
FAA–2007–28053; Directorate Identifier
2007–NE–18–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 https://
dms.dot.gov, including any personal
information you provide. We will also
post a report summarizing each
substantive verbal contact we receive
about 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 AD 2007–0057,
dated March 1, 2007, to correct an
unsafe condition for the specified
products. The EASA AD states:
This AD is issued following a case of noncommanded in-flight engine shutdown
which occurred on an Arrius 2F turboshaft
engine, following the seizing of the gas
generator. The result may be an emergency
autorotation landing, or, at worst, an
accident.
Investigations of this event have revealed
that the seizing of the gas generator was
caused by the fracture of the separator cage
of the gas generator front bearing, due to
high-cycle fatigue cracks initiated in the
lubrication slots of the separator cage.
Modification Tf 12 introduces a new gas
generator front bearing without lubrication
slots on the separator cage.
You may obtain further information
by examining the EASA AD in the AD
docket.
rwilkins on PROD1PC63 with PROPOSALS-1
Relevant Service Information
Turbomeca has issued Mandatory
Service Bulletin No. 319 72 4012,
Update No. 1, dated September 19,
2006. The actions described in this
service information are intended to
correct the unsafe condition identified
in the EASA AD.
FAA’s Determination and Requirements
of This Proposed AD
This product has been approved by
the aviation authority of France and is
approved for operation in the United
States. Pursuant to our bilateral
agreement with France, they have
notified us of the unsafe condition
described in the EASA AD and service
information referenced above. We are
proposing this AD because we evaluated
all information provided by EASA and
determined the unsafe condition exists
VerDate Aug<31>2005
17:17 Aug 27, 2007
Jkt 211001
and is likely to exist or develop on other
products of the same type design. This
proposed AD would require replacing
the engine module 02 with a module
that incorporates Turbomeca
Modification Tf 12A. That replacement
must occur at the next engine shop visit
after the effective date of the proposed
AD, but no later than April 30, 2008.
Modification Tf 12A installs into the
engine module 02, a new gas generator
front bearing without lubrication slots
on the separator cage.
Costs of Compliance
We estimate that this proposed AD
would affect 61 engines installed on
aircraft of U.S. registry. We also estimate
that it would take about 10 work-hours
per engine to perform the proposed
actions, and that the average labor rate
is $80 per work-hour. Required parts
would cost about $111,440 per engine.
Based on these figures, we estimate the
total cost of the proposed AD to U.S.
operators to be $6,846,640. Our cost
estimate is exclusive of possible
warranty coverage.
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;
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Fmt 4702
Sfmt 4702
49237
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 proposed AD and placed it in the
AD docket.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, 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
1. The authority citation for part 39
continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new AD:
Turbomeca: Docket No. FAA–2007–28053;
Directorate Identifier 2007–NE–18–AD.
Comments Due Date
(a) We must receive comments by
September 27, 2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Turbomeca Arrius
2F turboshaft engines that have not
incorporated Turbomeca Modification Tf
12A. These engines are installed on, but not
limited to, Eurocopter EC120B helicopters.
Reason
(d) European Aviation Safety Agency
(EASA) AD No. 2007–0057, dated March 1,
2007, states:
This AD is issued following a case of noncommanded in-flight engine shutdown
which occurred on an Arrius 2F turboshaft
engine, following the seizing of the gas
generator. The result may be an emergency
autorotation landing, or, at worst, an
accident.
Investigations of this event have revealed
that the seizing of the gas generator was
caused by the fracture of the separator cage
of the gas generator front bearing, due to
high-cycle fatigue cracks initiated in the
lubrication slots of the separator cage.
Modification Tf12 introduces a new gas
generator front bearing without lubrication
slots on the separator cage.
Actions and Compliance
(e) Unless already done, do the following
actions.
E:\FR\FM\28AUP1.SGM
28AUP1
49238
Federal Register / Vol. 72, No. 166 / Tuesday, August 28, 2007 / Proposed Rules
(1) At the next engine shop visit after the
effective date of this AD, but no later than
April 30, 2008, replace the engine module 02
with a module that incorporates Turbomeca
Modification Tf 12A. Turbomeca
Modification Tf 12A installs into the engine
module 02 a new gas generator front bearing
without lubrication slots on the separator
cage.
(2) Use the Instructions to be Incorporated
section of Turbomeca Mandatory Service
Bulletin No. 319 72 4012, Update No. 1,
dated September 19, 2006, to do the actions
in paragraph (e)(1) of this AD.
Other FAA AD Provisions
(f) 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
(g) Refer to EASA AD 2007–0057, dated
March 1, 2007, for related information.
(h) Contact Christopher Spinney,
Aerospace Engineer, Engine Certification
Office, FAA, Engine and Propeller
Directorate, 12 New England Executive Park,
Burlington, MA 01803; e-mail:
Christopher.spinney@faa.gov; telephone
(781) 238–7175, fax (781) 238–7199, for more
information about this AD.
Issued in Burlington, Massachusetts, on
August 22, 2007.
Mark A. Rumizen,
Acting Manager, Engine and Propeller
Directorate, Aircraft Certification Service.
[FR Doc. E7–17003 Filed 8–27–07; 8:45 am]
BILLING CODE 4910–13–P
MILLENNIUM CHALLENGE
CORPORATION
Millennium Challenge
Corporation.
ACTION: Notice of proposed rulemaking.
AGENCY:
rwilkins on PROD1PC63 with PROPOSALS-1
PART 1304—FREEDOM OF
INFORMATION ACT PROCEDURES
Sec.
1304.1 General Provisions.
1304.2 Definitions.
1304.3 Records available to the public.
1304.4 Requests for records.
1304.5 Responsibility for responding to
requests.
1304.6 Records not disclosed.
1304.7 Confidential commercial
information.
1304.8 Appeals.
1304.9 Fees.
§ 1304.1
Regulations Implementing the
Freedom of Information Act
SUMMARY: The purpose of this document
is to outline the procedures by which
the Millennium Challenge Corporation
proposes to implement the relevant
provisions of the Freedom of
Information Act as required under that
statute. This document will assist
interested parties in obtaining access to
Millennium Challenge Corporation
public records.
DATES: Submit comments on or before
October 29, 2007.
FOR FURTHER INFORMATION CONTACT: John
Mantini, FOIA Officer, 202–521–3863.
ADDRESSES: Send comments to John
Mantini, FOIA Officer, Office of the
General Counsel, Millennium Challenge
17:17 Aug 27, 2007
List of Subjects in 22 CFR Part 1304
Freedom of Information Act
procedures.
For the reasons set forth in the
preamble, the Millennium Challenge
Corporation proposes to amend Chapter
XIII of title 22 by adding a new part
1304 to read as follows:
Authority: 5 U.S.C. 552, as amended.
22 CFR Part 1304
VerDate Aug<31>2005
Corporation, 875 Fifteenth Street, NW.,
Washington, DC 20005–2221.
SUPPLEMENTARY INFORMATION: The
Millennium Challenge Act (MCA) of
2003 established a new federal agency
called the Millennium Challenge
Corporation. Congress enacted the
Freedom of Information Act (FOIA) in
1966 and last modified it with the
Electronic Freedom of Information Act
amendments of 1996. This proposed
rule addresses electronically available
documents, procedures for making
requests, agency handling of requests,
records not disclosed, changes in fees,
and public reading rooms as well as
other related provisions.
Jkt 211001
General Provisions.
This part contains the regulations the
Millennium Challenge Corporation
(MCC) follows in implementing the
Freedom of Information Act (FOIA) (5
U.S.C. 552) as amended. These
regulations provide procedures by
which you may obtain access to records
compiled, created, and maintained by
MCC, along with the procedures that
MCC must follow in response to such
requests for records. These regulations
should be read together with the FOIA,
which provides additional information
about access to records maintained by
MCC.
§ 1304.2
Definitions.
(a) Agency has the meaning set forth
in 5 U.S.C. 552(f)(1).
(b) Commercial use requester means a
requester seeking information for a use
or purpose that furthers the commercial,
trade, or profit interests of himself or the
person on whose behalf the request is
made, which can include furthering
PO 00000
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Fmt 4702
Sfmt 4702
those interests through litigation. In
determining whether a request properly
belongs in this category, the FOIA
Officer shall determine the use to which
the requester will put the documents
requested. Where the FOIA Officer has
reasonable cause to doubt the use to
which the requester will put the records
sought, or where that use is not clear
from the request itself, the FOIA Officer
shall contact the requester for additional
clarification before assigning the request
to a specific category.
(c) Confidential commercial
information means records provided to
the government by a submitter that
arguably contains material exempt from
disclosure under Exemption 4 of the
FOIA, because disclosure could
reasonably be expected to cause
substantial competitive harm.
(d) Direct costs mean those
expenditures by MCC actually incurred
in searching for and duplicating records
in response to the FOIA request. These
costs include the salary of the
employee(s) performing the work (basic
rate of pay plus a percentage of that rate
to cover benefits) and the cost of
operating duplicating machinery. Direct
costs do not include overhead expenses,
such as the cost of space, heating, or
lighting of the facility in which the
records are stored.
(e) Duplication means the process of
making a copy of a record in order to
respond to a FOIA request, including
paper copies, microfilm, audio-video
materials, and computer diskettes or
other electronic copies.
(f) Educational institution refers to a
preschool, a public or private
elementary or secondary school, an
institute of undergraduate higher
education, an institute of graduate
higher education, an institute of
professional education, or an institute of
vocational education which operates a
program of scholarly research. To
qualify for this category, the requester
must show that the request is authorized
by and is made under the auspices of a
qualifying institution and that the
records are not sought for a commercial
use, but are sought to further scholarly
research.
(g) FOIA means the Freedom of
Information Act, as amended (5 U.S.C.
552).
(h) FOIA Officer means the MCC
employee who is authorized to make
determinations as provided in this part.
The mailing address for the FOIA
Officer is: Millennium Challenge
Corporation, Attn: FOIA Officer, 875
Fifteenth Street, NW., Washington, DC
20005.
(i) Non-commercial scientific
institution refers to an institution that is
E:\FR\FM\28AUP1.SGM
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]]>Agencies
[Federal Register Volume 72, Number 166 (Tuesday, August 28, 2007)]
[Proposed Rules]
[Pages 49236-49238]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E7-17003]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2007-28053; Directorate Identifier 2007-NE-18-AD]
RIN 2120-AA64
Airworthiness Directives; Turbomeca Arrius 2F Turboshaft Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: We propose to adopt a new airworthiness directive (AD) for the
products listed above. This proposed AD results from mandatory
continuing airworthiness information (MCAI) provided by the aviation
authority of France to identify and correct an unsafe condition on
Turbomeca Arrius 2F turboshaft engines. The MCAI states the following:
This AD is issued following a case of non-commanded in-flight
engine shutdown which occurred on an Arrius 2F turboshaft engine,
following the seizing of the gas generator. The result may be an
emergency autorotation landing, or, at worst, an accident.
Investigations of this event have revealed that the seizing of
the gas generator was caused by the fracture of the separator cage
of the gas generator front bearing, due to high-cycle fatigue cracks
initiated in the lubrication slots of the separator cage.
We are proposing this AD to prevent uncommanded shutdown of the
engine, which could lead to an accident.
DATES: We must receive comments on this proposed AD by September 27,
2007.
ADDRESSES: You may send comments by any of the following methods:
DOT Docket Web Site: Go to https://dms.dot.gov and follow
the instructions for sending your comments electronically.
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.
Fax: (202) 493-2251.
Federal eRulemaking Portal: https://www.regulations.gov.
Follow the instructions for submitting comments.
Examining the AD Docket
You may examine the AD docket on the Internet at https://
dms.dot.gov; 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 (telephone (800) 647-5527) is in the ADDRESSES section.
Comments will be available in the AD docket shortly after receipt.
FOR FURTHER INFORMATION CONTACT: Christopher Spinney, Aerospace
Engineer, Engine Certification Office, FAA, Engine and Propeller
Directorate, 12 New England Executive Park, Burlington, MA 01803; e-
mail: Christopher.spinney@faa.gov; telephone (781) 238-7175, fax (781)
238-7199.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments about
[[Page 49237]]
this proposed AD. Send your comments to an address listed under the
ADDRESSES section. Include ``Docket No. FAA-2007-28053; Directorate
Identifier 2007-NE-18-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 https://
dms.dot.gov, including any personal information you provide. We will
also post a report summarizing each substantive verbal contact we
receive about 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 AD
2007-0057, dated March 1, 2007, to correct an unsafe condition for the
specified products. The EASA AD states:
This AD is issued following a case of non-commanded in-flight
engine shutdown which occurred on an Arrius 2F turboshaft engine,
following the seizing of the gas generator. The result may be an
emergency autorotation landing, or, at worst, an accident.
Investigations of this event have revealed that the seizing of
the gas generator was caused by the fracture of the separator cage
of the gas generator front bearing, due to high-cycle fatigue cracks
initiated in the lubrication slots of the separator cage.
Modification Tf 12 introduces a new gas generator front bearing
without lubrication slots on the separator cage.
You may obtain further information by examining the EASA AD in the
AD docket.
Relevant Service Information
Turbomeca has issued Mandatory Service Bulletin No. 319 72 4012,
Update No. 1, dated September 19, 2006. The actions described in this
service information are intended to correct the unsafe condition
identified in the EASA AD.
FAA's Determination and Requirements of This Proposed AD
This product has been approved by the aviation authority of France
and is approved for operation in the United States. Pursuant to our
bilateral agreement with France, they have notified us of the unsafe
condition described in the EASA AD 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 replacing the engine module 02 with a
module that incorporates Turbomeca Modification Tf 12A. That
replacement must occur at the next engine shop visit after the
effective date of the proposed AD, but no later than April 30, 2008.
Modification Tf 12A installs into the engine module 02, a new gas
generator front bearing without lubrication slots on the separator
cage.
Costs of Compliance
We estimate that this proposed AD would affect 61 engines installed
on aircraft of U.S. registry. We also estimate that it would take about
10 work-hours per engine to perform the proposed actions, and that the
average labor rate is $80 per work-hour. Required parts would cost
about $111,440 per engine. Based on these figures, we estimate the
total cost of the proposed AD to U.S. operators to be $6,846,640. Our
cost estimate is exclusive of possible warranty coverage.
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); 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 proposed AD and placed it in the AD docket.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, 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
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
2. The FAA amends Sec. 39.13 by adding the following new AD:
Turbomeca: Docket No. FAA-2007-28053; Directorate Identifier 2007-
NE-18-AD.
Comments Due Date
(a) We must receive comments by September 27, 2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Turbomeca Arrius 2F turboshaft engines
that have not incorporated Turbomeca Modification Tf 12A. These
engines are installed on, but not limited to, Eurocopter EC120B
helicopters.
Reason
(d) European Aviation Safety Agency (EASA) AD No. 2007-0057,
dated March 1, 2007, states:
This AD is issued following a case of non-commanded in-flight
engine shutdown which occurred on an Arrius 2F turboshaft engine,
following the seizing of the gas generator. The result may be an
emergency autorotation landing, or, at worst, an accident.
Investigations of this event have revealed that the seizing of
the gas generator was caused by the fracture of the separator cage
of the gas generator front bearing, due to high-cycle fatigue cracks
initiated in the lubrication slots of the separator cage.
Modification Tf12 introduces a new gas generator front bearing
without lubrication slots on the separator cage.
Actions and Compliance
(e) Unless already done, do the following actions.
[[Page 49238]]
(1) At the next engine shop visit after the effective date of
this AD, but no later than April 30, 2008, replace the engine module
02 with a module that incorporates Turbomeca Modification Tf 12A.
Turbomeca Modification Tf 12A installs into the engine module 02 a
new gas generator front bearing without lubrication slots on the
separator cage.
(2) Use the Instructions to be Incorporated section of Turbomeca
Mandatory Service Bulletin No. 319 72 4012, Update No. 1, dated
September 19, 2006, to do the actions in paragraph (e)(1) of this
AD.
Other FAA AD Provisions
(f) 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
(g) Refer to EASA AD 2007-0057, dated March 1, 2007, for related
information.
(h) Contact Christopher Spinney, Aerospace Engineer, Engine
Certification Office, FAA, Engine and Propeller Directorate, 12 New
England Executive Park, Burlington, MA 01803; e-mail:
Christopher.spinney@faa.gov; telephone (781) 238-7175, fax (781)
238-7199, for more information about this AD.
Issued in Burlington, Massachusetts, on August 22, 2007.
Mark A. Rumizen,
Acting Manager, Engine and Propeller Directorate, Aircraft
Certification Service.
[FR Doc. E7-17003 Filed 8-27-07; 8:45 am]
BILLING CODE 4910-13-P
