Airworthiness Directives; General Electric Company CF34-8C1/-8C5/-8C5B1/-8E5/-8E5A1, and CF34-10E Series Turbofan Engines, 51384-51386 [E7-17680]
Download as PDF
51384
Federal Register / Vol. 72, No. 173 / Friday, September 7, 2007 / Proposed Rules
invited to submit comments on this
proposed rule, including the regulatory
and informational impacts of this action
on small businesses.
This proposed rule would impose no
additional reporting or recordkeeping
requirements on either small or large
California dried prune handlers. As
with all Federal marketing order
programs, reports and forms are
periodically reviewed to reduce
information requirements and
duplication by industry and public
sector agencies.
The AMS is committed to complying
with the E-Government Act, to promote
the use of the Internet and other
information technologies to provide
increased opportunities for citizen
access to Government information and
services, and for other purposes.
USDA has not identified any relevant
Federal rules that duplicate, overlap, or
conflict with this rule.
A small business guide on complying
with fruit, vegetable, and specialty crop
marketing agreements and orders may
be viewed at: https://www.ams.usda.gov/
fv/moab/html. Any questions about the
compliance guide should be sent to Jay
Guerber at the previously mentioned
address in the FOR FURTHER INFORMATION
CONTACT section.
A 20-day comment period is provided
to allow interested persons to respond
to this proposed rule. Twenty days is
deemed appropriate because: (1) The
2007–08 crop year will begin on August
1, 2007, and the marketing order
requires that the rate of assessment for
each crop year apply to all assessable
prunes handled during such crop year;
(2) the committee needs to have
sufficient funds to pay its expenses
which are incurred on a continuous
basis; and (3) handlers are aware of this
action, which was unanimously
recommended by the committee at a
public meeting and is similar to other
assessment rate actions issued in past
years.
List of Subjects in 7 CFR Part 993
pwalker on PROD1PC71 with PROPOSALS
Marketing agreements, Plums, Prunes,
Reporting and recordkeeping
requirements.
For the reasons set forth in the
preamble, 7 CFR part 993 is proposed to
be amended as follows:
PART 993—DRIED PRUNES
PRODUCED IN CALIFORNIA
1. The authority citation for 7 CFR
part 993 continues to read as follows:
Authority: 7 U.S.C. 601–674.
2. Section 993.347 is revised to read
as follows:
VerDate Aug<31>2005
19:35 Sep 06, 2007
Jkt 211001
§ 993.347
Assessment rate.
On and after August 1, 2007, an
assessment rate of $0.60 per ton of
salable dried prunes is established for
California dried prunes.
Dated: August 30, 2007.
Lloyd C. Day,
Administrator, Agricultural Marketing
Service.
[FR Doc. 07–4369 Filed 9–6–07; 8:45 am]
BILLING CODE 3410–02–M
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2007–29001; Directorate
Identifier 2007–NE–36–AD]
RIN 2120–AA64
Airworthiness Directives; General
Electric Company CF34–8C1/–8C5/–
8C5B1/–8E5/–8E5A1, and CF34–10E
Series Turbofan Engines
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
SUMMARY: The FAA proposes to adopt a
new airworthiness directive (AD) for
General Electric Company (GE) CF34–
8C1/–8C5/–8C5B1/–8E5/–8E5A1, and
CF34–10E series turbofan engines with
certain part number (P/N) and serial
number (SN) fuel metering units (FMU)
installed. This proposed AD would
require a onetime test of the FMU for a
miswired (reversed polarity) condition
of the input wires to the overspeed
solenoid. This proposed AD results from
the discovery of miswired FMU
overspeed solenoids in the field. We are
proposing this AD to prevent the engine
from failing to shutdown as commanded
during an overspeed, leading to
uncontained engine failure.
DATES: We must receive any comments
on this proposed AD by November 6,
2007.
Use one of the following
addresses to comment on this proposed
AD.
• DOT Docket Web site: Go to
https://dms.dot.gov and follow the
instructions for sending your comments
electronically.
• Government-wide rulemaking Web
site: Go to https://www.regulations.gov
and follow the instructions for sending
your comments electronically.
• Mail: U.S. Department of
Transportation, Docket Operations, M–
ADDRESSES:
PO 00000
Frm 00007
Fmt 4702
Sfmt 4702
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.
You can get the service information
identified in this proposed AD from
General Electric Company via Lockheed
Martin Technology Services, 10525
Chester Road, Suite C, Cincinnati, Ohio
45215; telephone (513) 672–8400; fax
(513) 672–8422.
FOR FURTHER INFORMATION CONTACT: Tara
Chaidez, Aerospace Engineer, Engine
Certification Office, FAA, Engine and
Propeller Directorate, 12 New England
Executive Park, Burlington, MA 01803;
e-mail: tara.chaidez@faa.gov; telephone
(781) 238–7773; fax (781) 238–7199.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send us any written
relevant data, views, or arguments
regarding this proposal. Send your
comments to an address listed under
ADDRESSES. Include ‘‘Docket No. FAA–
2007–29001; Directorate Identifier
2007–NE–36–AD’’ in the subject line of
your comments. We specifically invite
comments on the overall regulatory,
economic, environmental, and energy
aspects of the proposed AD. We will
consider all comments received by the
closing date and may amend the
proposed AD in light of 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 with FAA
personnel concerning this proposed AD.
Using the search function of the DOT
Web site, anyone can find and read the
comments in any of our dockets,
including 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) or you may visit https://
dms.dot.gov.
Examining the AD Docket
You may examine the AD docket on
the Internet at https://dms.dot.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 proposed
AD, the regulatory evaluation, any
E:\FR\FM\07SEP1.SGM
07SEP1
Federal Register / Vol. 72, No. 173 / Friday, September 7, 2007 / Proposed Rules
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.
Discussion
Woodward Governor Company has
discovered in the field a miswired
(reversed polarity) condition of the
input wires to the overspeed solenoid,
on some FMUs. Investigation of FMU
manufacturing records shows that there
is a possibility that a population of
FMUs might be miswired. If the
solenoid is miswired, the engine will
fail to shut down as commanded. This
condition, if not corrected, could result
in failure of the engine to shutdown as
commanded during an overspeed,
leading to uncontained engine failure.
Relevant Service Information
We have reviewed and approved the
technical contents of GE Service
Bulletin (SB) No. CF34–8C–AL S/B 73–
0030, Revision 1, dated July 19, 2007,
SB No. CF34–8E–AL S/B 73–0015,
Revision 1, dated July 19, 2007, and SB
No. CF34–10E S/B 72–0067, Revision 1,
dated July 26, 2007 that describe
procedures for performing a onetime
test of suspect FMUs for a miswired
(reversed polarity) condition of the
input wires to the overspeed solenoid.
pwalker on PROD1PC71 with PROPOSALS
FAA’s Determination and Requirements
of the Proposed AD
We have evaluated all pertinent
information and identified an unsafe
condition that is likely to exist or
develop on other products of this same
type design. We are proposing this AD,
which would require a onetime test of
suspect FMUs for a miswired (reversed
polarity) condition of the input wires to
the overspeed solenoid. The proposed
AD would require you to use the service
information described previously to
perform these actions.
Costs of Compliance
We estimate that this proposed AD
would affect 1,055 engines installed on
airplanes of U.S. registry. We also
estimate that it would take about 0.25
work-hour per engine to perform the
proposed actions, and that the average
labor rate is $80 per work-hour. We
estimate that about 2 percent of the
inspected solenoids are defective, and it
will cost about $5,000 to replace each
FMU. Based on these figures, we
estimate the total cost of the proposed
AD to U.S. operators to be $180,000.
Our cost estimate is exclusive of
possible warranty coverage.
VerDate Aug<31>2005
19:35 Sep 06, 2007
Jkt 211001
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 have 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 that the proposed 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. Would 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. You may get a copy
of this summary at the address listed
under ADDRESSES.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Safety.
The Proposed Amendment
Under the authority delegated to me
by the Administrator, the Federal
Aviation Administration 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:
PO 00000
Frm 00008
Fmt 4702
Sfmt 4702
51385
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive:
General Electric Company: Docket No. FAA–
2007–29001; Directorate Identifier 2007–
NE–36–AD.
Comments Due Date
(a) The Federal Aviation Administration
(FAA) must receive comments on this
airworthiness directive (AD) action by
November 6, 2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to:
(1) General Electric Company (GE) CF34–
8C1/–8C5/–8C5B1/–8E5/–8E5A1 turbofan
engines, with GE fuel metering unit (FMU)
part number (P/N) 4120T01P02, serial
numbers (SNs) WYG94939 through
WYGB4222, and Woodward Governor FMU
Vendor Identification Number (VIN) 8061–
926, SNs 11954378 through 15140071.
(2) GE CF34–10E series turbofan engines,
with GE FMU P/N 2043M10P05, SNs
WYGA3251 through WYGB4085, and
Woodward Governor FMU VIN 8063–884,
SNs 13335695 through 15028283.
(3) CF34–8C1/–8C5/–8C5B1 turbofan
engines are installed on, but not limited to,
Bombardier Inc. Model CL–600–2C10 (CRJ–
700 & –701), and CL–600–2D24/–2D15 (CRJ–
900) airplanes.
(4) CF34–8E5/–8E5A1 turbofan engines are
installed on, but not limited to, Embraer ERJ
170–100/–200 series airplanes.
(5) CF34–10E series turbofan engines are
installed on, but not limited to, Embraer ERJ
190–100/–200 series airplanes.
Unsafe Condition
(d) This AD results from the discovery of
miswired FMU overspeed solenoids in the
field. We are issuing this AD to prevent
failure of the engine to shutdown as
commanded during an overspeed, leading to
uncontained engine failure.
Compliance
(e) You are responsible for having the
actions required by this AD performed within
2,200 flight hours after the effective date of
this AD, but not to exceed 24 months after
the effective date of this AD, unless the
actions have already been done.
Onetime Test of the FMU
(f) Perform a onetime test of the FMU for
a miswired (reversed polarity) condition of
the input wires to the overspeed solenoid.
(g) Use paragraph 3A of the
Accomplishment Instructions of GE Service
Bulletin (SB) No. CF34–8C–AL S/B 73–0030,
Revision 1, dated July 19, 2007, SB No.
CF34–8E–AL S/B 73–0015, Revision 1, dated
July 19, 2007, or SB No. CF34–10E S/B 72–
0067, Revision 1, dated July 26, 2007, as
applicable, to do the test.
(h) If the FMU fails the test, remove the
FMU.
E:\FR\FM\07SEP1.SGM
07SEP1
51386
Federal Register / Vol. 72, No. 173 / Friday, September 7, 2007 / Proposed Rules
Previous Credit
DEPARTMENT OF TRANSPORTATION
(i) If you performed the actions specified
in paragraphs (f) through (h) of this AD, using
the inspection procedures in GE SB No.
CF34–8C–AL S/B 73–0030, dated May 25,
2007, SB No. CF34–8E–AL S/B 73–0015,
dated June 1, 2007, or SB No. CF34–10E S/
B 72–0067, dated June 7, 2007, before the
effective date of this AD, you have satisfied
the compliance requirements of this AD.
Reporting Requirements
(j) At the applicable time specified in
paragraph (j)(4) or (j)(5) of this AD:
(1) Submit a report of all findings (both
positive and negative) of the testing required
by paragraph (f) of this AD to Customer
Support Manager, Woodward Governor
Company, e-mail:
Jim.Akers@Woodward.com; telephone (815)
639–5365.
(2) The report must include date of
inspection, serial number of FMU, and
results of the inspection.
(3) Under the provisions of the Paperwork
Reduction Act (44 U.S.C. 3501 et seq.), the
Office of Management and Budget (OMB) has
approved the information collection
requirements contained in this AD and has
assigned OMB Control Number 2120–0056.
(4) If the inspection is done after the
effective date of this AD, submit the report
within 10 days after the inspection.
(5) If the inspection was done before the
effective date of this AD, submit the report
within 10 days after the effective date of this
AD.
Alternative Methods of Compliance
(k) The Manager, Engine Certification
Office, has the authority to approve
alternative methods of compliance for this
AD if requested using the procedures found
in 14 CFR 39.19.
Related Information
(l) None.
(m) Contact Tara Chaidez, Aerospace
Engineer, Engine Certification Office, FAA,
Engine and Propeller Directorate, 12 New
England Executive Park, Burlington, MA
01803; e-mail: tara.chaidez@faa.gov;
telephone (781) 238–7773; fax (781) 238–
7199, for more information about this AD.
Issued in Burlington, Massachusetts, on
August 28, 2007.
Peter A. White,
Acting Manager, Engine and Propeller
Directorate, Aircraft Certification Service.
[FR Doc. E7–17680 Filed 9–6–07; 8:45 am]
pwalker on PROD1PC71 with PROPOSALS
BILLING CODE 4910–13–P
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2007–29117; Directorate
Identifier 2007–NM–114–AD]
RIN 2120–AA64
Airworthiness Directives; Airbus Model
A310 Series Airplanes
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)
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:
As a result of a Wide Spread Fatigue
Damage (WFD) calculation on A310 aircraft
it was found that a modification of the upper
fuselage circumferential joint at FR (frame)
55/58 is necessary to enable the aircraft to
reach the Extended Service Goal (ESG).
The unsafe condition is failure of the
circumferential joint of the upper
fuselage, which could result in reduced
structural integrity of the airplane. The
proposed AD would require actions that
are intended to address the unsafe
condition described in the MCAI.
DATES: We must receive comments on
this proposed AD by October 9, 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.
• Fax: (202) 493–2251.
• Mail: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue, SE.,
Washington, DC 20590.
• Hand Delivery: Room W12–140 on
the ground floor of the West Building,
1200 New Jersey Avenue, SE.,
Washington, DC, between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays.
• 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 Operations office
VerDate Aug<31>2005
19:35 Sep 06, 2007
Jkt 211001
PO 00000
Frm 00009
Fmt 4702
Sfmt 4702
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 Operations office (telephone
(800) 647–5527) is in the ADDRESSES
section. Comments will be available in
the AD docket shortly after receipt.
Tom
Stafford, Aerospace Engineer,
International Branch, ANM–116, FAA,
Transport Airplane Directorate, 1601
Lind Avenue, SW., Renton, Washington
98057–3356; telephone (425) 227–1622;
fax (425) 227–1149.
FOR FURTHER INFORMATION CONTACT:
SUPPLEMENTARY INFORMATION:
Streamlined Issuance of AD
The FAA is implementing a new
process for streamlining the issuance of
ADs related to MCAI. This streamlined
process will allow us to adopt MCAI
safety requirements in a more efficient
manner and will reduce safety risks to
the public. This process continues to
follow all FAA AD issuance processes to
meet legal, economic, Administrative
Procedure Act, and Federal Register
requirements. We also continue to meet
our technical decision-making
responsibilities to identify and correct
unsafe conditions on U.S.-certificated
products.
This proposed AD references the
MCAI and related service information
that we considered in forming the
engineering basis to correct the unsafe
condition. The proposed AD contains
text copied from the MCAI and for this
reason might not follow our plain
language principles.
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–2007–29117; Directorate Identifier
2007–NM–114–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.
E:\FR\FM\07SEP1.SGM
07SEP1
Agencies
[Federal Register Volume 72, Number 173 (Friday, September 7, 2007)]
[Proposed Rules]
[Pages 51384-51386]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E7-17680]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2007-29001; Directorate Identifier 2007-NE-36-AD]
RIN 2120-AA64
Airworthiness Directives; General Electric Company CF34-8C1/-8C5/
-8C5B1/-8E5/-8E5A1, and CF34-10E Series Turbofan Engines
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for General Electric Company (GE) CF34-8C1/-8C5/-8C5B1/-8E5/-8E5A1, and
CF34-10E series turbofan engines with certain part number (P/N) and
serial number (SN) fuel metering units (FMU) installed. This proposed
AD would require a onetime test of the FMU for a miswired (reversed
polarity) condition of the input wires to the overspeed solenoid. This
proposed AD results from the discovery of miswired FMU overspeed
solenoids in the field. We are proposing this AD to prevent the engine
from failing to shutdown as commanded during an overspeed, leading to
uncontained engine failure.
DATES: We must receive any comments on this proposed AD by November 6,
2007.
ADDRESSES: Use one of the following addresses to comment on this
proposed AD.
DOT Docket Web site: Go to https://dms.dot.gov and follow
the instructions for sending your comments electronically.
Government-wide rulemaking Web site: Go to https://
www.regulations.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.
You can get the service information identified in this proposed AD
from General Electric Company via Lockheed Martin Technology Services,
10525 Chester Road, Suite C, Cincinnati, Ohio 45215; telephone (513)
672-8400; fax (513) 672-8422.
FOR FURTHER INFORMATION CONTACT: Tara Chaidez, Aerospace Engineer,
Engine Certification Office, FAA, Engine and Propeller Directorate, 12
New England Executive Park, Burlington, MA 01803; e-mail:
tara.chaidez@faa.gov; telephone (781) 238-7773; fax (781) 238-7199.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send us any written relevant data, views, or
arguments regarding this proposal. Send your comments to an address
listed under ADDRESSES. Include ``Docket No. FAA-2007-29001;
Directorate Identifier 2007-NE-36-AD'' in the subject line of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of the proposed AD. We will
consider all comments received by the closing date and may amend the
proposed AD in light of 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 with FAA
personnel concerning this proposed AD. Using the search function of the
DOT Web site, anyone can find and read the comments in any of our
dockets, including 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) or you
may visit https://dms.dot.gov.
Examining the AD Docket
You may examine the AD docket on the Internet at https://
dms.dot.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 proposed AD, the regulatory evaluation, any
[[Page 51385]]
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.
Discussion
Woodward Governor Company has discovered in the field a miswired
(reversed polarity) condition of the input wires to the overspeed
solenoid, on some FMUs. Investigation of FMU manufacturing records
shows that there is a possibility that a population of FMUs might be
miswired. If the solenoid is miswired, the engine will fail to shut
down as commanded. This condition, if not corrected, could result in
failure of the engine to shutdown as commanded during an overspeed,
leading to uncontained engine failure.
Relevant Service Information
We have reviewed and approved the technical contents of GE Service
Bulletin (SB) No. CF34-8C-AL S/B 73-0030, Revision 1, dated July 19,
2007, SB No. CF34-8E-AL S/B 73-0015, Revision 1, dated July 19, 2007,
and SB No. CF34-10E S/B 72-0067, Revision 1, dated July 26, 2007 that
describe procedures for performing a onetime test of suspect FMUs for a
miswired (reversed polarity) condition of the input wires to the
overspeed solenoid.
FAA's Determination and Requirements of the Proposed AD
We have evaluated all pertinent information and identified an
unsafe condition that is likely to exist or develop on other products
of this same type design. We are proposing this AD, which would require
a onetime test of suspect FMUs for a miswired (reversed polarity)
condition of the input wires to the overspeed solenoid. The proposed AD
would require you to use the service information described previously
to perform these actions.
Costs of Compliance
We estimate that this proposed AD would affect 1,055 engines
installed on airplanes of U.S. registry. We also estimate that it would
take about 0.25 work-hour per engine to perform the proposed actions,
and that the average labor rate is $80 per work-hour. We estimate that
about 2 percent of the inspected solenoids are defective, and it will
cost about $5,000 to replace each FMU. Based on these figures, we
estimate the total cost of the proposed AD to U.S. operators to be
$180,000. 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 have 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 that the proposed 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. Would 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. You may get a copy of this summary at the
address listed under ADDRESSES.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Safety.
The Proposed Amendment
Under the authority delegated to me by the Administrator, the
Federal Aviation Administration 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
airworthiness directive:
General Electric Company: Docket No. FAA-2007-29001; Directorate
Identifier 2007-NE-36-AD.
Comments Due Date
(a) The Federal Aviation Administration (FAA) must receive
comments on this airworthiness directive (AD) action by November 6,
2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to:
(1) General Electric Company (GE) CF34-8C1/-8C5/-8C5B1/-8E5/-
8E5A1 turbofan engines, with GE fuel metering unit (FMU) part number
(P/N) 4120T01P02, serial numbers (SNs) WYG94939 through WYGB4222,
and Woodward Governor FMU Vendor Identification Number (VIN) 8061-
926, SNs 11954378 through 15140071.
(2) GE CF34-10E series turbofan engines, with GE FMU P/N
2043M10P05, SNs WYGA3251 through WYGB4085, and Woodward Governor FMU
VIN 8063-884, SNs 13335695 through 15028283.
(3) CF34-8C1/-8C5/-8C5B1 turbofan engines are installed on, but
not limited to, Bombardier Inc. Model CL-600-2C10 (CRJ-700 & -701),
and CL-600-2D24/-2D15 (CRJ-900) airplanes.
(4) CF34-8E5/-8E5A1 turbofan engines are installed on, but not
limited to, Embraer ERJ 170-100/-200 series airplanes.
(5) CF34-10E series turbofan engines are installed on, but not
limited to, Embraer ERJ 190-100/-200 series airplanes.
Unsafe Condition
(d) This AD results from the discovery of miswired FMU overspeed
solenoids in the field. We are issuing this AD to prevent failure of
the engine to shutdown as commanded during an overspeed, leading to
uncontained engine failure.
Compliance
(e) You are responsible for having the actions required by this
AD performed within 2,200 flight hours after the effective date of
this AD, but not to exceed 24 months after the effective date of
this AD, unless the actions have already been done.
Onetime Test of the FMU
(f) Perform a onetime test of the FMU for a miswired (reversed
polarity) condition of the input wires to the overspeed solenoid.
(g) Use paragraph 3A of the Accomplishment Instructions of GE
Service Bulletin (SB) No. CF34-8C-AL S/B 73-0030, Revision 1, dated
July 19, 2007, SB No. CF34-8E-AL S/B 73-0015, Revision 1, dated July
19, 2007, or SB No. CF34-10E S/B 72-0067, Revision 1, dated July 26,
2007, as applicable, to do the test.
(h) If the FMU fails the test, remove the FMU.
[[Page 51386]]
Previous Credit
(i) If you performed the actions specified in paragraphs (f)
through (h) of this AD, using the inspection procedures in GE SB No.
CF34-8C-AL S/B 73-0030, dated May 25, 2007, SB No. CF34-8E-AL S/B
73-0015, dated June 1, 2007, or SB No. CF34-10E S/B 72-0067, dated
June 7, 2007, before the effective date of this AD, you have
satisfied the compliance requirements of this AD.
Reporting Requirements
(j) At the applicable time specified in paragraph (j)(4) or
(j)(5) of this AD:
(1) Submit a report of all findings (both positive and negative)
of the testing required by paragraph (f) of this AD to Customer
Support Manager, Woodward Governor Company, e-mail:
Jim.Akers@Woodward.com; telephone (815) 639-5365.
(2) The report must include date of inspection, serial number of
FMU, and results of the inspection.
(3) Under the provisions of the Paperwork Reduction Act (44
U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) has
approved the information collection requirements contained in this
AD and has assigned OMB Control Number 2120-0056.
(4) If the inspection is done after the effective date of this
AD, submit the report within 10 days after the inspection.
(5) If the inspection was done before the effective date of this
AD, submit the report within 10 days after the effective date of
this AD.
Alternative Methods of Compliance
(k) The Manager, Engine Certification Office, has the authority
to approve alternative methods of compliance for this AD if
requested using the procedures found in 14 CFR 39.19.
Related Information
(l) None.
(m) Contact Tara Chaidez, Aerospace Engineer, Engine
Certification Office, FAA, Engine and Propeller Directorate, 12 New
England Executive Park, Burlington, MA 01803; e-mail:
tara.chaidez@faa.gov; telephone (781) 238-7773; fax (781) 238-7199,
for more information about this AD.
Issued in Burlington, Massachusetts, on August 28, 2007.
Peter A. White,
Acting Manager, Engine and Propeller Directorate, Aircraft
Certification Service.
[FR Doc. E7-17680 Filed 9-6-07; 8:45 am]
BILLING CODE 4910-13-P