Airworthiness Directives; The Boeing Company Model 747-400 and -400F Series Airplanes, 7513-7515 [2011-2952]
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Federal Register / Vol. 76, No. 28 / Thursday, February 10, 2011 / Proposed Rules
jdjones on DSK8KYBLC1PROD with PROPOSALS-1
general visual inspection, this AD requires
doing a detailed inspection.
products listed above. This proposed
AD would require a general visual
inspection for cracks and holes of the
Other FAA AD Provisions
main equipment center (MEC) drip
(h) The following provisions also apply to
shields, and repairs if necessary;
this AD:
installation of a fiberglass reinforcing
(1) Alternative Methods of Compliance
overcoat; and, for certain airplanes,
(AMOCs): The Manager, International
installation of stiffening panels to the
Branch, ANM–116, Transport Airplane
MEC drip shields. This proposed AD
Directorate, FAA, has the authority to
was prompted by a report of a loss of
approve AMOCs for this AD, if requested
bus control unit number 1 and generator
using the procedures found in 14 CFR 39.19.
Send information to ATTN: Cindy Ashforth,
control units numbers 1 and 2 while the
Aerospace Engineer, International Branch,
airplane was on the ground, and
ANM–116, Transport Airplane Directorate,
multiple operator reports of cracked
FAA, 1601 Lind Avenue, SW., Renton,
MEC drip shields. We are proposing this
Washington 98057–3356; telephone 425–
AD to prevent water penetration into the
227–2768; fax 425–227–1149. Information
MEC, which could result in the loss of
may be e-mailed to: 9-ANM-116-AMOCflight critical systems.
REQUESTS@faa.gov. Before using any
DATES: We must receive comments on
approved AMOC, notify your appropriate
principal inspector, or lacking a principal
this proposed AD by March 28, 2011.
inspector, the manager of the local flight
ADDRESSES: You may send comments by
standards district office/certificate holding
any of the following methods:
district office. The AMOC approval letter
• Federal eRulemaking Portal: Go to
must specifically reference this AD.
https://www.regulations.gov. Follow the
(2) Airworthy Product: For any
instructions for submitting comments.
requirement in this AD to obtain corrective
• Fax: 202–493–2251.
actions from a manufacturer or other source,
• Mail: U.S. Department of
use these actions if they are FAA-approved.
Transportation, Docket Operations,
Corrective actions are considered FAAM–30, West Building Ground Floor,
approved if they are approved by the State
Room W12–140, 1200 New Jersey
of Design Authority (or their delegated
agent). You are required to assure the product Avenue, SE., Washington, DC 20590.
is airworthy before it is returned to service.
• Hand Delivery: Deliver to Mail
address above between 9 a.m. and
Related Information
5 p.m., Monday through Friday, except
(i) Refer to MCAI Brazilian Airworthiness
Federal holidays.
Directives 2010–06–01R1 and 2010–06–02R1,
For service information identified in
both dated August 25, 2010; and EMBRAER
this proposed AD, contact Boeing
Service Bulletins 170–53–0082 and 190–53–
Commercial Airplanes, Attention: Data
0042, both Revision 01, both dated April 28,
& Services Management, P.O. Box 3707,
2010; for related information.
MC 2H–65, Seattle, Washington 98124–
Issued in Renton, Washington, on February
2207; telephone 206–544–5000,
3, 2011.
extension 1; fax 206–766–5680; e-mail
Ali Bahrami,
me.boecom@boeing.com; Internet
Manager, Transport Airplane Directorate,
https://www.myboeingfleet.com. You
Aircraft Certification Service.
may review copies of the referenced
[FR Doc. 2011–2926 Filed 2–9–11; 8:45 am]
service information at the FAA,
BILLING CODE 4910–13–P
Transport Airplane Directorate, 1601
Lind Avenue, SW., Renton, Washington.
For information on the availability of
DEPARTMENT OF TRANSPORTATION this material at the FAA, call 425–227–
1221.
Federal Aviation Administration
Examining the AD Docket
14 CFR Part 39
You may examine the AD docket on
the Internet at https://
[Docket No. FAA–2011–0041; Directorate
www.regulations.gov; or in person at the
Identifier 2010–NM–227–AD]
Docket Management Facility between
RIN 2120–AA64
9 a.m. and 5 p.m., Monday through
Friday, except Federal holidays. The AD
Airworthiness Directives; The Boeing
docket contains this proposed AD, the
Company Model 747–400 and –400F
regulatory evaluation, any comments
Series Airplanes
received, and other information. The
street address for the Docket Office
AGENCY: Federal Aviation
(phone: 800–647–5527) is in the
Administration (FAA), DOT.
ADDRESSES section. Comments will be
ACTION: Notice of proposed rulemaking
available in the AD docket shortly after
(NPRM).
receipt.
FOR FURTHER INFORMATION CONTACT:
SUMMARY: We propose to adopt a new
Marcia Smith, Aerospace Engineer,
airworthiness directive (AD) for the
VerDate Mar<15>2010
14:39 Feb 09, 2011
Jkt 223001
PO 00000
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Fmt 4702
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7513
Cabin Safety & Environmental Systems
Branch, ANM–150S, FAA, Seattle
Aircraft Certification Office (ACO), 1601
Lind Avenue, SW., Renton, Washington
98057–3356; phone: 425–917–6484; fax:
425–917–6590; e-mail:
marcia.smith@faa.gov.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written
relevant data, views, or arguments about
this proposal. Send your comments to
an address listed under the ADDRESSES
section. Include ‘‘Docket No. FAA–
2011–0041; Directorate Identifier 2010–
NM–227–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 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 we receive
about this proposed AD.
Discussion
We have received a report of a loss of
bus control unit number 1 and generator
control units numbers 1 and 2 while the
airplane was on the ground, and
multiple operators have reported
cracked main equipment center (MEC)
drip shields. Cracking in the MEC drip
shield and exhaust plenum has been
identified as part of the water leak path
into the MEC. This condition, if not
corrected, could result in water
penetration into the MEC, which could
result in the loss of flight critical
systems.
Relevant Service Information
We reviewed Boeing Alert Service
Bulletin 747–25A3588, dated July 19,
2010. The service information describes
procedures for performing a general
visual inspection of the MEC drip shield
for cracks and holes, performing repairs
if necessary, and installing a fiberglass
reinforcing overcoat to the MEC drip
shield. Additionally, for airplanes
identified as Groups 1 and 3, the service
information describes procedures for
installing MEC drip shield panel
stiffeners.
FAA’s Determination
We are proposing this AD because we
evaluated all the relevant information
and determined the unsafe condition
described previously is likely to exist or
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Federal Register / Vol. 76, No. 28 / Thursday, February 10, 2011 / Proposed Rules
develop in other products of the same
type design.
Proposed AD Requirements
Costs of Compliance
This proposed AD would require
accomplishing the actions specified in
the service information described
previously.
We estimate that this proposed AD
affects 41 airplanes of U.S. registry.
We estimate the following costs to
comply with this proposed AD:
ESTIMATED COSTS
Cost per
product
Cost on U.S.
operators
Action
Labor cost
Parts cost
Inspection and installation:
Groups 1, 3 (24 airplanes).
Inspection and installation:
Group 2 (17 airplanes).
20 work-hours × $85 per hour = $1,700 ................
$1,109 ............................
$2,809
$67,416
17 work-hours × $85 per hour = $1,445 ................
Negligible .......................
1,445
24,565
We estimate the following costs to do
any necessary repairs that would be
required based on the results of the
proposed inspection. We have no way of
determining the number of aircraft that
might need these repairs.
ON-CONDITION COSTS
Action
Labor cost
Parts cost
Hole repair ............................
1 work-hour × $85 per hour = $85 per hole .....................
Negligible .............................
According to the manufacturer, some
of the costs of this proposed AD may be
covered under warranty, thereby
reducing the cost impact on affected
individuals. We do not control warranty
coverage for affected individuals. As a
result, we have included all costs in our
cost estimate.
Authority for This Rulemaking
jdjones on DSK8KYBLC1PROD with PROPOSALS-1
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.
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
14:39 Feb 09, 2011
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
The Proposed Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA proposes to amend 14 CFR part
39 as follows:
PART 39—AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Regulatory Findings
VerDate Mar<15>2010
distribution of power and
responsibilities among the various
levels of government.
For the reasons discussed above, I
certify this proposed regulation:
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
(2) Is not a ‘‘significant rule’’ under the
DOT Regulatory Policies and Procedures
(44 FR 11034, February 26, 1979),
(3) Will not affect intrastate aviation
in Alaska, and
(4) Will not have a significant
economic impact, positive or negative,
on a substantial number of small entities
under the criteria of the Regulatory
Flexibility Act.
Jkt 223001
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive (AD):
The Boeing Company: Docket No. FAA–
2011–0041; Directorate Identifier 2010–
NM–227–AD.
PO 00000
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Cost per airplane
$85 per hole.
Comments Due Date
(a) We must receive comments by March
28, 2011.
Affected ADs
(b) None.
Applicability
(c) This AD applies to The Boeing
Company Model 747–400 and –400F series
airplanes, certificated in any category, as
identified in Boeing Alert Service Bulletin
747–25A3588, dated July 19, 2010.
Subject
(d) Joint Aircraft System Component
(JASC)/Air Transport Association (ATA) of
America Code 25, Equipment/Furnishings.
Unsafe Condition
(e) This AD was prompted by a report of
a loss of bus control unit number 1 and
generator control units numbers 1 and 2
while the airplane was on the ground, and
multiple operator reports of cracked main
equipment center (MEC) drip shields. We are
issuing this AD to prevent water penetration
into the MEC, which could result in the loss
of flight critical systems.
Compliance
(f) Comply with this AD within the
compliance times specified, unless already
done.
Inspection
(g) Within 24 months after the effective
date of this AD, do the actions specified in
paragraph (g)(1) or (g)(2) of this AD, as
applicable, in accordance with the
Accomplishment Instructions of Boeing Alert
Service Bulletin 747–25A3588, dated July 19,
2010.
(1) For Group 1 and Group 3 airplanes, as
identified in Boeing Alert Service Bulletin
747–25A3588, dated July 19, 2010: Do a
general visual inspection of the MEC drip
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Federal Register / Vol. 76, No. 28 / Thursday, February 10, 2011 / Proposed Rules
shield to detect cracking and holes; do all
applicable repairs; and install the MEC drip
shield panel stiffeners and the fiberglass
reinforcing overcoat to the MEC drip shield;
in accordance with the Accomplishment
Instructions of Boeing Alert Service Bulletin
747–25A3588, dated July 19, 2010. Do all
applicable repairs before further flight.
(2) For Group 2 airplanes, as identified in
Boeing Alert Service Bulletin 747–25A3588,
dated July 19, 2010: Do a general visual
inspection of the MEC drip shield to detect
cracking and holes; do all applicable repairs;
and install the fiberglass reinforcing overcoat
to the MEC drip shield; in accordance with
the Accomplishment Instructions of Boeing
Alert Service Bulletin 747–25A3588, dated
July 19, 2010. Do all applicable repairs before
further flight.
Alternative Methods of Compliance
(AMOCs)
(h)(1) The Manager, Seattle Aircraft
Certification Office (ACO), FAA, has the
authority to approve AMOCs for this AD, if
requested using the procedures found in 14
CFR 39.19. In accordance with 14 CFR 39.19,
send your request to your principal inspector
or local Flight Standards District Office, as
appropriate. If sending information directly
to the manager of the ACO, send it to the
attention of the person identified in the
Related Information section of this AD.
Information may be e-mailed to: 9-ANMSeattle-ACO-AMOC-Requests@faa.gov.
(2) Before using any approved AMOC,
notify your appropriate principal inspector,
or lacking a principal inspector, the manager
of the local flight standards district office/
certificate holding district office.
jdjones on DSK8KYBLC1PROD with PROPOSALS-1
Related Information
(i) For more information about this AD,
contact Marcia Smith, Aerospace Engineer,
Cabin Safety & Environmental Systems
Branch, ANM–150S FAA, Seattle Aircraft
Certification Office (ACO), 1601 Lind
Avenue, SW., Renton, Washington 98057–
3356; phone: 425–917–6484; fax: 425–917–
6590; e-mail: marcia.smith@faa.gov.
(j) For service information identified in this
AD, contact Boeing Commercial Airplanes,
Attention: Data & Services Management, P.O.
Box 3707, MC 2H–65, Seattle, Washington
98124–2207; telephone 206–544–5000,
extension 1; fax 206–766–5680; e-mail
me.boecom@boeing.com; Internet https://
www.myboeingfleet.com. You may review
copies of the referenced 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.
Issued in Renton, Washington, on February
3, 2011.
Ali Bahrami,
Manager,Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. 2011–2952 Filed 2–9–11; 8:45 am]
BILLING CODE 4910–13–P
VerDate Mar<15>2010
14:39 Feb 09, 2011
Jkt 223001
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 71
[Docket No. FAA–2010–0582; Airspace
Docket No. 10–AEA–15]
Proposed Establishment of Class E
Airspace; Kenbridge, VA
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM); withdrawal.
7515
Authority: 49 U.S.C. 106(g); 40103, 40113,
40120; E.O. 10854, 24 FR 9565, 3 CFR, 1959–
1963 Comp., p. 389.
Issued in College Park, Georgia, on January
25, 2011.
Mark D. Ward,
Manager, Operations Support Group, Eastern
Service Center, Air Traffic Organization.
[FR Doc. 2011–2986 Filed 2–9–11; 8:45 am]
BILLING CODE 4910–13–P
AGENCY:
This action withdraws the
NPRM published in the Federal
Register on November 29, 2010, which
proposed to establish Class E airspace at
Lunenburg County Airport, Kenbridge,
VA. The NPRM is being withdrawn as
a portion of the proposed airspace was
not included. A new rulemaking will be
forthcoming to correctly establish the
new airspace.
DATES: Effective 0901 UTC, February 10,
2011, the proposed rule published
November 29, 2010, at 75 FR 73016, is
withdrawn.
FOR FURTHER INFORMATION CONTACT:
Richard Horrocks, Operations Support
Group, Eastern Service Center, Federal
Aviation Administration, P.O. Box
20636, Atlanta, Georgia 30320;
telephone (404) 305–5588.
SUPPLEMENTARY INFORMATION:
SUMMARY:
History
On November 29, 2010, a NPRM was
published in the Federal Register to
establish Class E airspace at Kenbridge,
VA to accommodate special standard
instrument approach procedure for
Lunenburg County Airport (75 FR
73016) Docket No. FAA–2010–0582.
After publication the FAA found that
the airspace description in the proposed
rule inadvertently excluded extensions
necessary for the airport legal
description. To avoid confusion this
proposed rule is being withdrawn and
will be established under another
rulemaking.
Lists of Subjects in 14 CFR Part 71
Airspace, Incorporation by reference,
Navigation (Air).
The Withdrawal
Accordingly, pursuant to the
authority delegated to me, the Notice of
Proposed Rulemaking, Airspace Docket
No. 10–AEA–15, as published in the
Federal Register on November 29, 2010
(75 FR 73016) (FR Doc. 2010–0582), is
hereby withdrawn.
PO 00000
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DEPARTMENT OF HOMELAND
SECURITY
Coast Guard
33 CFR Part 165
[Docket No. USCG–2010–1097]
RIN 1625–AA00
Safety Zone; Mississippi River, Mile
842.0 to 839.5
Coast Guard, DHS.
Notice of proposed rulemaking.
AGENCY:
ACTION:
The Coast Guard proposes
establishing a temporary safety zone for
all waters of the Upper Mississippi
River, Mile 842.0 to 839.5, extending the
entire width of the river. This safety
zone is needed to protect participants
and event personnel during the swim
leg of the OptumHealth Half Iron
Triathlon occurring in the Upper
Mississippi River. Entry into this zone
would be prohibited unless specifically
authorized by the Captain of the Port
Upper Mississippi River or a designated
representative.
DATES: Comments and related material
must be received by the Coast Guard on
or before March 14, 2011.
ADDRESSES: You may submit comments
identified by docket number USCG–
2010–1097 using any one of the
following methods:
(1) Federal eRulemaking Portal:
https://www.regulations.gov.
(2) Fax: 202–493–2251.
(3) Mail: Docket Management Facility
(M–30), U.S. Department of
Transportation, West Building Ground
Floor, Room W12–140, 1200 New Jersey
Avenue, SE., Washington, DC 20590–
0001.
(4) Hand delivery: Same as mail
address above, between 9 a.m. and
5 p.m., Monday through Friday, except
Federal holidays. The telephone number
is 202–366–9329.
To avoid duplication, please use only
one of these four methods. See the
‘‘Public Participation and Request for
Comments’’ portion of the
SUPPLEMENTARY INFORMATION section
SUMMARY:
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]]>Agencies
[Federal Register Volume 76, Number 28 (Thursday, February 10, 2011)]
[Proposed Rules]
[Pages 7513-7515]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-2952]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2011-0041; Directorate Identifier 2010-NM-227-AD]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Model 747-400 and -
400F Series Airplanes
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 would require a general visual
inspection for cracks and holes of the main equipment center (MEC) drip
shields, and repairs if necessary; installation of a fiberglass
reinforcing overcoat; and, for certain airplanes, installation of
stiffening panels to the MEC drip shields. This proposed AD was
prompted by a report of a loss of bus control unit number 1 and
generator control units numbers 1 and 2 while the airplane was on the
ground, and multiple operator reports of cracked MEC drip shields. We
are proposing this AD to prevent water penetration into the MEC, which
could result in the loss of flight critical systems.
DATES: We must receive comments on this proposed AD by March 28, 2011.
ADDRESSES: You may send comments by any of the following methods:
Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments.
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: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
For service information identified in this proposed AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone 206-
544-5000, extension 1; fax 206-766-5680; e-mail me.boecom@boeing.com;
Internet https://www.myboeingfleet.com. You may review copies of the
referenced 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.
Examining the AD Docket
You may examine the AD docket on the Internet at https://www.regulations.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 (phone: 800-647-5527) is in the ADDRESSES
section. Comments will be available in the AD docket shortly after
receipt.
FOR FURTHER INFORMATION CONTACT: Marcia Smith, Aerospace Engineer,
Cabin Safety & Environmental Systems Branch, ANM-150S, FAA, Seattle
Aircraft Certification Office (ACO), 1601 Lind Avenue, SW., Renton,
Washington 98057-3356; phone: 425-917-6484; fax: 425-917-6590; e-mail:
marcia.smith@faa.gov.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under the ADDRESSES section. Include ``Docket No. FAA-2011-0041;
Directorate Identifier 2010-NM-227-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 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 we
receive about this proposed AD.
Discussion
We have received a report of a loss of bus control unit number 1
and generator control units numbers 1 and 2 while the airplane was on
the ground, and multiple operators have reported cracked main equipment
center (MEC) drip shields. Cracking in the MEC drip shield and exhaust
plenum has been identified as part of the water leak path into the MEC.
This condition, if not corrected, could result in water penetration
into the MEC, which could result in the loss of flight critical
systems.
Relevant Service Information
We reviewed Boeing Alert Service Bulletin 747-25A3588, dated July
19, 2010. The service information describes procedures for performing a
general visual inspection of the MEC drip shield for cracks and holes,
performing repairs if necessary, and installing a fiberglass
reinforcing overcoat to the MEC drip shield. Additionally, for
airplanes identified as Groups 1 and 3, the service information
describes procedures for installing MEC drip shield panel stiffeners.
FAA's Determination
We are proposing this AD because we evaluated all the relevant
information and determined the unsafe condition described previously is
likely to exist or
[[Page 7514]]
develop in other products of the same type design.
Proposed AD Requirements
This proposed AD would require accomplishing the actions specified
in the service information described previously.
Costs of Compliance
We estimate that this proposed AD affects 41 airplanes of U.S.
registry.
We estimate the following costs to comply with this proposed AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
Inspection and installation: 20 work-hours x $85 per $1,109............. $2,809 $67,416
Groups 1, 3 (24 airplanes). hour = $1,700.
Inspection and installation: 17 work-hours x $85 per Negligible......... 1,445 24,565
Group 2 (17 airplanes). hour = $1,445.
----------------------------------------------------------------------------------------------------------------
We estimate the following costs to do any necessary repairs that
would be required based on the results of the proposed inspection. We
have no way of determining the number of aircraft that might need these
repairs.
On-Condition Costs
----------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per airplane
----------------------------------------------------------------------------------------------------------------
Hole repair..................... 1 work-hour x $85 per Negligible......... $85 per hole.
hour = $85 per hole.
----------------------------------------------------------------------------------------------------------------
According to the manufacturer, some of the costs of this proposed
AD may be covered under warranty, thereby reducing the cost impact on
affected individuals. We do not control warranty coverage for affected
individuals. As a result, we have included all costs in our cost
estimate.
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),
(3) Will not affect intrastate aviation in Alaska, and
(4) Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
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 (AD):
The Boeing Company: Docket No. FAA-2011-0041; Directorate Identifier
2010-NM-227-AD.
Comments Due Date
(a) We must receive comments by March 28, 2011.
Affected ADs
(b) None.
Applicability
(c) This AD applies to The Boeing Company Model 747-400 and -
400F series airplanes, certificated in any category, as identified
in Boeing Alert Service Bulletin 747-25A3588, dated July 19, 2010.
Subject
(d) Joint Aircraft System Component (JASC)/Air Transport
Association (ATA) of America Code 25, Equipment/Furnishings.
Unsafe Condition
(e) This AD was prompted by a report of a loss of bus control
unit number 1 and generator control units numbers 1 and 2 while the
airplane was on the ground, and multiple operator reports of cracked
main equipment center (MEC) drip shields. We are issuing this AD to
prevent water penetration into the MEC, which could result in the
loss of flight critical systems.
Compliance
(f) Comply with this AD within the compliance times specified,
unless already done.
Inspection
(g) Within 24 months after the effective date of this AD, do the
actions specified in paragraph (g)(1) or (g)(2) of this AD, as
applicable, in accordance with the Accomplishment Instructions of
Boeing Alert Service Bulletin 747-25A3588, dated July 19, 2010.
(1) For Group 1 and Group 3 airplanes, as identified in Boeing
Alert Service Bulletin 747-25A3588, dated July 19, 2010: Do a
general visual inspection of the MEC drip
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shield to detect cracking and holes; do all applicable repairs; and
install the MEC drip shield panel stiffeners and the fiberglass
reinforcing overcoat to the MEC drip shield; in accordance with the
Accomplishment Instructions of Boeing Alert Service Bulletin 747-
25A3588, dated July 19, 2010. Do all applicable repairs before
further flight.
(2) For Group 2 airplanes, as identified in Boeing Alert Service
Bulletin 747-25A3588, dated July 19, 2010: Do a general visual
inspection of the MEC drip shield to detect cracking and holes; do
all applicable repairs; and install the fiberglass reinforcing
overcoat to the MEC drip shield; in accordance with the
Accomplishment Instructions of Boeing Alert Service Bulletin 747-
25A3588, dated July 19, 2010. Do all applicable repairs before
further flight.
Alternative Methods of Compliance (AMOCs)
(h)(1) The Manager, Seattle Aircraft Certification Office (ACO),
FAA, has the authority to approve AMOCs for this AD, if requested
using the procedures found in 14 CFR 39.19. In accordance with 14
CFR 39.19, send your request to your principal inspector or local
Flight Standards District Office, as appropriate. If sending
information directly to the manager of the ACO, send it to the
attention of the person identified in the Related Information
section of this AD. Information may be e-mailed to: 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov.
(2) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the local flight standards district office/certificate holding
district office.
Related Information
(i) For more information about this AD, contact Marcia Smith,
Aerospace Engineer, Cabin Safety & Environmental Systems Branch,
ANM-150S FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind
Avenue, SW., Renton, Washington 98057-3356; phone: 425-917-6484;
fax: 425-917-6590; e-mail: marcia.smith@faa.gov.
(j) For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone
206-544-5000, extension 1; fax 206-766-5680; e-mail
me.boecom@boeing.com; Internet https://www.myboeingfleet.com. You
may review copies of the referenced 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.
Issued in Renton, Washington, on February 3, 2011.
Ali Bahrami,
Manager,Transport Airplane Directorate, Aircraft Certification Service.
[FR Doc. 2011-2952 Filed 2-9-11; 8:45 am]
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