Airworthiness Directives; Gulfstream Aerospace LP Model Galaxy Airplanes and Gulfstream 200 Airplanes, 13490-13492 [E8-5015]
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13490
Federal Register / Vol. 73, No. 50 / Thursday, March 13, 2008 / Proposed Rules
Related Information
(h) Refer to MCAI European Aviation
Safety Agency (EASA) Airworthiness
Directive 2007–0137, dated May 16, 2007;
Dassault Service Bulletin F2000EX–116,
dated May 31, 2006; and Dassault Service
Bulletin F2000EX–140, dated February 28,
2007; for related information.
Issued in Renton, Washington, on March 3,
2008.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E8–5006 Filed 3–12–08; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2008–0270; Directorate
Identifier 2007–NM–255–AD]
RIN 2120–AA64
Airworthiness Directives; Gulfstream
Aerospace LP Model Galaxy Airplanes
and Gulfstream 200 Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
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:
SUMMARY:
rwilkins on PROD1PC63 with PROPOSALS
The 3 supporting blocks [installed on
hydraulic lines] were made of Teflon, which
is unsuitable material for this application.
Excessive wear of the blocks was discovered
on numerous aircraft, as well as several cases
of chafing between the loosely supported
tubes. In one case, hydraulic fluid was lost
due to fatigue failure of an inadequately
supported tube. Loss of hydraulic fluid
causes subsequent multiple failures of
hydraulically operated systems.
Multiple failures of hydraulically
operated systems (for the flight air brake
actuators, brake system, right thrust
reverser, etc.) could result in reduced
controllability 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 April 14, 2008.
ADDRESSES: You may send comments by
any of the following methods:
VerDate Aug<31>2005
16:23 Mar 12, 2008
Jkt 214001
• 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: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–40, 1200 New Jersey Avenue, SE.,
Washington, DC, between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays.
Examining the AD Docket
You may examine the AD docket on
the Internet at https://
www.regulations.gov; or in person at the
Docket Operations office between 9 a.m.
and 5 p.m., Monday through Friday,
except Federal holidays. The AD docket
contains this 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.
FOR FURTHER INFORMATION CONTACT:
Mike Borfitz, Aerospace Engineer,
International Branch, ANM–116,
Transport Airplane Directorate, FAA,
1601 Lind Avenue, SW., Renton,
Washington 98057–3356; telephone
(425) 227–2677; fax (425) 227–1149.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written
relevant data, views, or arguments about
this proposed AD. Send your comments
to an address listed under the
ADDRESSES section. Include ‘‘Docket No.
FAA–2008–0270; Directorate Identifier
2007–NM–255–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://
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
The Civil Aviation Authority of Israel
(CAAI), which is the aviation authority
for Israel, has issued Israeli
Airworthiness Directive 29–07–01–11,
PO 00000
Frm 00026
Fmt 4702
Sfmt 4702
dated May 28, 2007 (referred to after
this as ‘‘the MCAI’’), to correct an unsafe
condition for the specified products.
The MCAI states:
The 3 supporting blocks [installed on
hydraulic tubes] were made of Teflon, which
is unsuitable material for this application.
Excessive wear of the blocks was discovered
on numerous aircraft, as well as several cases
of chafing between the loosely supported
tubes. In one case, hydraulic fluid was lost
due to fatigue failure of an inadequately
supported tube. Loss of hydraulic fluid
causes subsequent multiple failures of
hydraulically operated systems.
Multiple failures of hydraulically
operated systems (for the flight air brake
actuators, brake system, right thrust
reverser, etc.) could result in reduced
controllability of the airplane. The
corrective actions include repetitive
visual inspections of the attaching
blocks for wear and of the hydraulic
tubes to determine if any tube is loose
or damaged; an inspection of the entire
length of the tubes for chafing, damage,
and cracking; replacement of chafed,
damaged, or cracked tubes; and
replacement of blocks made of Teflon in
the right-hand aft fuselage equipment
bay with new blocks made of
Nylon 6/6. You may obtain further
information by examining the MCAI in
the AD docket.
Relevant Service Information
Gulfstream has issued Service
Bulletin 200–29–316, dated June 29,
2007. The actions described in this
service information are intended to
correct the unsafe condition identified
in the MCAI.
FAA’s Determination and Requirements
of This Proposed AD
This product has been approved by
the aviation authority of another
country, and is approved for operation
in the United States. Pursuant to our
bilateral agreement with the State of
Design Authority, we have been notified
of the unsafe condition described in the
MCAI and service information
referenced above. We are proposing this
AD because we evaluated all pertinent
information and determined an unsafe
condition exists and is likely to exist or
develop on other products of the same
type design.
Differences Between This AD and the
MCAI or Service Information
We have reviewed the MCAI and
related service information and, in
general, agree with their substance. But
we might have found it necessary to use
different words from those in the MCAI
to ensure the AD is clear for U.S.
operators and is enforceable. In making
E:\FR\FM\13MRP1.SGM
13MRP1
Federal Register / Vol. 73, No. 50 / Thursday, March 13, 2008 / Proposed Rules
these changes, we do not intend to differ
substantively from the information
provided in the MCAI and related
service information.
We might also have proposed
different actions in this AD from those
in the MCAI in order to follow FAA
policies. Any such differences are
highlighted in a NOTE within the
proposed AD.
Costs of Compliance
Based on the service information, we
estimate that this proposed AD would
affect about 129 products of U.S.
registry. We also estimate that it would
take about 2 work-hours per product to
comply with the basic requirements of
this proposed AD. The average labor
rate is $80 per work-hour. Required
parts would cost about $54 per product.
Where the service information lists
required parts costs that are covered
under warranty, we have assumed that
there will be no charge for these costs.
As we do not control warranty coverage
for affected parties, some parties may
incur costs higher than estimated here.
Based on these figures, we estimate the
cost of the proposed AD on U.S.
operators to be $27,606, or $214 per
product.
rwilkins on PROD1PC63 with PROPOSALS
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.
VerDate Aug<31>2005
16:23 Mar 12, 2008
Jkt 214001
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.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new AD:
Gulfstream Aerospace LP (Formerly Israel
Aircraft Industries, Ltd.): Docket No.
FAA–2008–0270; Directorate Identifier
2007–NM–255–AD.
Comments Due Date
(a) We must receive comments by April 14,
2008.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Gulfstream Model
Galaxy airplanes and Gulfstream 200
airplanes, serial numbers 004 through 156,
certificated in any category.
Subject
(d) Air Transport Association (ATA) of
America Code 29: Hydraulic Power.
Reason
(e) The mandatory continuing
airworthiness information (MCAI) states:
The 3 supporting blocks [installed on
hydraulic tubes] were made of Teflon, which
is unsuitable material for this application.
Excessive wear of the blocks was discovered
on numerous aircraft, as well as several cases
of chafing between the loosely supported
tubes. In one case, hydraulic fluid was lost
due to fatigue failure of an inadequately
supported tube. Loss of hydraulic fluid
causes subsequent multiple failures of
hydraulically operated systems.
PO 00000
Frm 00027
Fmt 4702
Sfmt 4702
13491
Multiple failures of hydraulically operated
systems (for the flight air brake actuators,
brake system, right thrust reverser, etc.) could
result in reduced controllability of the
airplane. The corrective actions include
repetitive visual inspections of the attaching
blocks for wear and of the hydraulic tubes to
determine if any tube is loose or damaged; an
inspection of the entire length of the tubes for
chafing, damage, and cracking; replacement
of chafed, damaged, or cracked tubes; and
replacement of blocks made of Teflon in the
right-hand aft fuselage equipment bay with
new blocks made of Nylon 6/6.
Actions and Compliance
(f) Do the following actions.
(1) Within 50 flight hours or one month
after the effective date of this AD, whichever
occurs first, unless previously accomplished
within 300 flight hours or six months prior
to the effective date of this AD: Perform a
visual inspection of the clamping blocks for
wear and of the hydraulic tubes to determine
if any tube is loose or damaged. Clamping
blocks are shown in detail B of Figure 2 of
Gulfstream Service Bulletin 200–29–316,
dated June 29, 2007, or in details B and C of
Figure 10, Page 0, of the Gulfstream G200
Illustrated Parts Catalog Chapter 29–10–30.
(i) If clamping blocks are not worn, repeat
the inspections specified in paragraph (f)(1)
of this AD thereafter at intervals not to
exceed 300 flight hours or six months,
whichever comes first, until the replacement
required by paragraph (f)(2) of this AD is
done.
(ii) If any hydraulic tube is loose or
damaged, before further flight, inspect the
hydraulic tubes along their entire length for
chafing, damage, and cracks.
(iii) Before further flight, repair or replace
all chafed, damaged, or cracked tubes using
a method approved by either the Manager,
International Branch, ANM–116, Transport
Airplane Directorate, FAA; or the Civil
Aviation Authority of Israel (CAAI) (or its
delegated agent). Chapter 20–10–12 of the
Gulfstream G200 Maintenance Manual is one
approved method.
(iv) Before further flight, replace all worn
clamping blocks by doing the replacement
specified in paragraph (f)(2) of this AD,
except as provided by paragraph (f)(1)(v) of
this AD.
(v) If Nylon 6/6 clamping blocks part
number (P/N) 4AS3565055–511 are not
available during the replacement specified in
paragraph (f)(1)(iv) of this AD, before further
flight, install new or serviceable Teflon
clamping blocks P/N 4AS3565055–507.
Within 300 flight hours or six months after
doing the installation, do the actions
specified in paragraph (f)(1) of this AD and
repeat thereafter at intervals not to exceed
300 flight hours or six months, whichever
comes first, until the replacement required by
paragraph (f)(2) of this AD is done.
(2) Within 600 flight hours or one year,
whichever comes first, after the effective date
of this AD, unless previously accomplished:
Replace the existing Teflon clamping blocks
P/N 4AS3565055–507 with Nylon 6/6
clamping blocks P/N 4AS3565055–511 in
accordance with Gulfstream Service Bulletin
200–29–316, dated June 29, 2007.
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13492
Federal Register / Vol. 73, No. 50 / Thursday, March 13, 2008 / Proposed Rules
Accomplishment of this replacement
constitutes terminating action for all
inspections of the clamping blocks required
by this AD. Accomplishment of this
replacement also constitutes terminating
action for the repetitive inspections of the
hydraulic tube required by paragraphs
(f)(1)(i) and (f)(1)(v) of this AD.
Note 1: Succeeding scheduled maintenance
checks of this area are to be performed per
the Aircraft Maintenance Manual (AMM).
FAA AD Differences
rwilkins on PROD1PC63 with PROPOSALS
Other FAA AD Provisions
(g) The following provisions also apply to
this AD:
(1) Alternative Methods of Compliance
(AMOCs): The Manager, International
Branch, ANM–116, FAA, has the authority to
approve AMOCs for this AD, if requested
using the procedures found in 14 CFR 39.19.
Send information to ATTN: Mike Borfitz,
Aerospace Engineer, International Branch,
ANM–116, Transport Airplane Directorate,
FAA, 1601 Lind Avenue, SW., Renton,
Washington 98057–3356; telephone (425)
227–2677; fax (425) 227–1149. Before using
any approved AMOC on any airplane to
which the AMOC applies, notify your
appropriate principal inspector (PI) in the
FAA Flight Standards District Office (FSDO),
or lacking a PI, your local FSDO.
(2) Airworthy Product: For any requirement
in this AD to obtain corrective actions from
a manufacturer or other source, use these
actions if they are FAA-approved. Corrective
actions are considered FAA-approved if they
are approved by the State of Design Authority
(or their delegated agent). You are required
to assure the product is airworthy before it
is returned to service.
(3) Reporting Requirements: For any
reporting requirement in this AD, under the
provisions of the Paperwork Reduction Act,
the Office of Management and Budget (OMB)
has approved the information collection
requirements and has assigned OMB Control
Number 2120–0056.
Related Information
(h) Refer to MCAI Israeli Airworthiness
Directive 29–07–01–11, dated May 28, 2007,
16:23 Mar 12, 2008
Issued in Renton, Washington, on March 3,
2008.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E8–5015 Filed 3–12–08; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Note 2: This AD differs from the MCAI
and/or service information as follows:
(1) The MCAI does not specify service
information if any tube replacement is done.
This AD requires doing the replacement as
specified in paragraph (f)(1)(ii) of this AD.
(2) The MCAI specifies doing a one-time
inspection of the installed Teflon blocks but
also specifies doing repetitive inspections of
temporary replacement Teflon blocks until
the permanent replacement with Nylon 6/6
clamping blocks is done. This AD requires
repetitive inspections of all Teflon blocks
until the permanent replacement is done.
(3) The MCAI specifies that doing the
replacement with Nylon 6/6 clamping blocks
constitutes terminating action. This AD
specifies that doing the replacement with
Nylon 6/6 clamping blocks constitutes
terminating action for the inspections of the
clamping blocks and for the repetitive
inspections of the hydraulic tubes.
VerDate Aug<31>2005
and Gulfstream Service Bulletin 200–29–316,
dated June 29, 2007, for related information.
Jkt 214001
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2008–0295; Directorate
Identifier 2007–NM–298–AD]
RIN 2120–AA64
Airworthiness Directives; Boeing
Model 757 Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
SUMMARY: We propose to adopt a new
airworthiness directive (AD) for all
Boeing Model 757–200, –200PF,
–200CB, and –300 series airplanes. This
proposed AD would require an
inspection of the two spring arms in the
spin brake assemblies in the nose wheel
well to determine if the spring arms are
made of aluminum or composite
material, and repetitive related
investigative/corrective actions if
necessary. This proposed AD results
from reports of cracked and broken
aluminum spring arms. We are
proposing this AD to detect and correct
cracked or broken spring arms. A
cracked or broken spring arm could
separate from the airplane and result in
potential hazard to persons or property
on the ground, or ingestion into the
engine with engine damage and
potential shutdown, or damage to the
airplane.
We must receive comments on
this proposed AD by April 28, 2008.
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: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue, SE.,
DATES:
PO 00000
Frm 00028
Fmt 4702
Sfmt 4702
Washington, DC 20590, between 9 a.m.
and 5 p.m., Monday through Friday,
except Federal holidays.
For service information identified in
this AD, contact Boeing Commercial
Airplanes, P.O. Box 3707, Seattle,
Washington 98124–2207.
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
(telephone 800–647–5527) is in the
ADDRESSES section. Comments will be
available in the AD docket shortly after
receipt.
FOR FURTHER INFORMATION CONTACT:
Jason Deutschman, Aerospace Engineer,
Airframe Branch, ANM–120S, FAA,
Seattle Aircraft Certification Office,
1601 Lind Avenue, SW., Renton,
Washington 98057–3356; telephone
(425) 917–6449; fax (425) 917–6590.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written
relevant data, views, or arguments about
this proposed AD. Send your comments
to an address listed under the
ADDRESSES section. Include ‘‘Docket No.
FAA–2008–0295; Directorate Identifier
2007–NM–298–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
Two spin brake assemblies are
installed in the nose wheel well and
include the spin brake spring arms.
Wear bars or brake pads installed on the
spin brake spring arms bring the nose
wheel to a stop after the gear is
retracted. We have received reports of
cracked and broken aluminum spring
arms. In some cases, the aluminum spin
brake spring arm separated from the
airplane. Cracked or broken spring arms,
if not detected and corrected, could
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]]>Agencies
[Federal Register Volume 73, Number 50 (Thursday, March 13, 2008)]
[Proposed Rules]
[Pages 13490-13492]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-5015]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2008-0270; Directorate Identifier 2007-NM-255-AD]
RIN 2120-AA64
Airworthiness Directives; Gulfstream Aerospace LP Model Galaxy
Airplanes and Gulfstream 200 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 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:
The 3 supporting blocks [installed on hydraulic lines] were made
of Teflon, which is unsuitable material for this application.
Excessive wear of the blocks was discovered on numerous aircraft, as
well as several cases of chafing between the loosely supported
tubes. In one case, hydraulic fluid was lost due to fatigue failure
of an inadequately supported tube. Loss of hydraulic fluid causes
subsequent multiple failures of hydraulically operated systems.
Multiple failures of hydraulically operated systems (for the flight air
brake actuators, brake system, right thrust reverser, etc.) could
result in reduced controllability 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 April 14, 2008.
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: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-40, 1200 New
Jersey Avenue, SE., Washington, DC, between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
Examining the AD Docket
You may examine the AD docket on the Internet at https://
www.regulations.gov; or in person at the Docket Operations office
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains this 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.
FOR FURTHER INFORMATION CONTACT: Mike Borfitz, Aerospace Engineer,
International Branch, ANM-116, Transport Airplane Directorate, FAA,
1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425)
227-2677; fax (425) 227-1149.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments about this proposed AD. Send your comments to an address
listed under the ADDRESSES section. Include ``Docket No. FAA-2008-0270;
Directorate Identifier 2007-NM-255-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://
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
The Civil Aviation Authority of Israel (CAAI), which is the
aviation authority for Israel, has issued Israeli Airworthiness
Directive 29-07-01-11, dated May 28, 2007 (referred to after this as
``the MCAI''), to correct an unsafe condition for the specified
products. The MCAI states:
The 3 supporting blocks [installed on hydraulic tubes] were made
of Teflon, which is unsuitable material for this application.
Excessive wear of the blocks was discovered on numerous aircraft, as
well as several cases of chafing between the loosely supported
tubes. In one case, hydraulic fluid was lost due to fatigue failure
of an inadequately supported tube. Loss of hydraulic fluid causes
subsequent multiple failures of hydraulically operated systems.
Multiple failures of hydraulically operated systems (for the flight air
brake actuators, brake system, right thrust reverser, etc.) could
result in reduced controllability of the airplane. The corrective
actions include repetitive visual inspections of the attaching blocks
for wear and of the hydraulic tubes to determine if any tube is loose
or damaged; an inspection of the entire length of the tubes for
chafing, damage, and cracking; replacement of chafed, damaged, or
cracked tubes; and replacement of blocks made of Teflon in the right-
hand aft fuselage equipment bay with new blocks made of Nylon 6/6. You
may obtain further information by examining the MCAI in the AD docket.
Relevant Service Information
Gulfstream has issued Service Bulletin 200-29-316, dated June 29,
2007. The actions described in this service information are intended to
correct the unsafe condition identified in the MCAI.
FAA's Determination and Requirements of This Proposed AD
This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant
to our bilateral agreement with the State of Design Authority, we have
been notified of the unsafe condition described in the MCAI and service
information referenced above. We are proposing this AD because we
evaluated all pertinent information and determined an unsafe condition
exists and is likely to exist or develop on other products of the same
type design.
Differences Between This AD and the MCAI or Service Information
We have reviewed the MCAI and related service information and, in
general, agree with their substance. But we might have found it
necessary to use different words from those in the MCAI to ensure the
AD is clear for U.S. operators and is enforceable. In making
[[Page 13491]]
these changes, we do not intend to differ substantively from the
information provided in the MCAI and related service information.
We might also have proposed different actions in this AD from those
in the MCAI in order to follow FAA policies. Any such differences are
highlighted in a NOTE within the proposed AD.
Costs of Compliance
Based on the service information, we estimate that this proposed AD
would affect about 129 products of U.S. registry. We also estimate that
it would take about 2 work-hours per product to comply with the basic
requirements of this proposed AD. The average labor rate is $80 per
work-hour. Required parts would cost about $54 per product. Where the
service information lists required parts costs that are covered under
warranty, we have assumed that there will be no charge for these costs.
As we do not control warranty coverage for affected parties, some
parties may incur costs higher than estimated here. Based on these
figures, we estimate the cost of the proposed AD on U.S. operators to
be $27,606, or $214 per product.
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:
Gulfstream Aerospace LP (Formerly Israel Aircraft Industries, Ltd.):
Docket No. FAA-2008-0270; Directorate Identifier 2007-NM-255-AD.
Comments Due Date
(a) We must receive comments by April 14, 2008.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Gulfstream Model Galaxy airplanes and
Gulfstream 200 airplanes, serial numbers 004 through 156,
certificated in any category.
Subject
(d) Air Transport Association (ATA) of America Code 29:
Hydraulic Power.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
The 3 supporting blocks [installed on hydraulic tubes] were made
of Teflon, which is unsuitable material for this application.
Excessive wear of the blocks was discovered on numerous aircraft, as
well as several cases of chafing between the loosely supported
tubes. In one case, hydraulic fluid was lost due to fatigue failure
of an inadequately supported tube. Loss of hydraulic fluid causes
subsequent multiple failures of hydraulically operated systems.
Multiple failures of hydraulically operated systems (for the flight
air brake actuators, brake system, right thrust reverser, etc.)
could result in reduced controllability of the airplane. The
corrective actions include repetitive visual inspections of the
attaching blocks for wear and of the hydraulic tubes to determine if
any tube is loose or damaged; an inspection of the entire length of
the tubes for chafing, damage, and cracking; replacement of chafed,
damaged, or cracked tubes; and replacement of blocks made of Teflon
in the right-hand aft fuselage equipment bay with new blocks made of
Nylon 6/6.
Actions and Compliance
(f) Do the following actions.
(1) Within 50 flight hours or one month after the effective date
of this AD, whichever occurs first, unless previously accomplished
within 300 flight hours or six months prior to the effective date of
this AD: Perform a visual inspection of the clamping blocks for wear
and of the hydraulic tubes to determine if any tube is loose or
damaged. Clamping blocks are shown in detail B of Figure 2 of
Gulfstream Service Bulletin 200-29-316, dated June 29, 2007, or in
details B and C of Figure 10, Page 0, of the Gulfstream G200
Illustrated Parts Catalog Chapter 29-10-30.
(i) If clamping blocks are not worn, repeat the inspections
specified in paragraph (f)(1) of this AD thereafter at intervals not
to exceed 300 flight hours or six months, whichever comes first,
until the replacement required by paragraph (f)(2) of this AD is
done.
(ii) If any hydraulic tube is loose or damaged, before further
flight, inspect the hydraulic tubes along their entire length for
chafing, damage, and cracks.
(iii) Before further flight, repair or replace all chafed,
damaged, or cracked tubes using a method approved by either the
Manager, International Branch, ANM-116, Transport Airplane
Directorate, FAA; or the Civil Aviation Authority of Israel (CAAI)
(or its delegated agent). Chapter 20-10-12 of the Gulfstream G200
Maintenance Manual is one approved method.
(iv) Before further flight, replace all worn clamping blocks by
doing the replacement specified in paragraph (f)(2) of this AD,
except as provided by paragraph (f)(1)(v) of this AD.
(v) If Nylon 6/6 clamping blocks part number (P/N) 4AS3565055-
511 are not available during the replacement specified in paragraph
(f)(1)(iv) of this AD, before further flight, install new or
serviceable Teflon clamping blocks P/N 4AS3565055-507. Within 300
flight hours or six months after doing the installation, do the
actions specified in paragraph (f)(1) of this AD and repeat
thereafter at intervals not to exceed 300 flight hours or six
months, whichever comes first, until the replacement required by
paragraph (f)(2) of this AD is done.
(2) Within 600 flight hours or one year, whichever comes first,
after the effective date of this AD, unless previously accomplished:
Replace the existing Teflon clamping blocks P/N 4AS3565055-507 with
Nylon 6/6 clamping blocks P/N 4AS3565055-511 in accordance with
Gulfstream Service Bulletin 200-29-316, dated June 29, 2007.
[[Page 13492]]
Accomplishment of this replacement constitutes terminating action
for all inspections of the clamping blocks required by this AD.
Accomplishment of this replacement also constitutes terminating
action for the repetitive inspections of the hydraulic tube required
by paragraphs (f)(1)(i) and (f)(1)(v) of this AD.
Note 1: Succeeding scheduled maintenance checks of this area are
to be performed per the Aircraft Maintenance Manual (AMM).
FAA AD Differences
Note 2: This AD differs from the MCAI and/or service information
as follows:
(1) The MCAI does not specify service information if any tube
replacement is done. This AD requires doing the replacement as
specified in paragraph (f)(1)(ii) of this AD.
(2) The MCAI specifies doing a one-time inspection of the
installed Teflon blocks but also specifies doing repetitive
inspections of temporary replacement Teflon blocks until the
permanent replacement with Nylon 6/6 clamping blocks is done. This
AD requires repetitive inspections of all Teflon blocks until the
permanent replacement is done.
(3) The MCAI specifies that doing the replacement with Nylon 6/6
clamping blocks constitutes terminating action. This AD specifies
that doing the replacement with Nylon 6/6 clamping blocks
constitutes terminating action for the inspections of the clamping
blocks and for the repetitive inspections of the hydraulic tubes.
Other FAA AD Provisions
(g) The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager,
International Branch, ANM-116, FAA, has the authority to approve
AMOCs for this AD, if requested using the procedures found in 14 CFR
39.19. Send information to ATTN: Mike Borfitz, Aerospace Engineer,
International Branch, ANM-116, Transport Airplane Directorate, FAA,
1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone
(425) 227-2677; fax (425) 227-1149. Before using any approved AMOC
on any airplane to which the AMOC applies, notify your appropriate
principal inspector (PI) in the FAA Flight Standards District Office
(FSDO), or lacking a PI, your local FSDO.
(2) Airworthy Product: For any requirement in this AD to obtain
corrective actions from a manufacturer or other source, use these
actions if they are FAA-approved. Corrective actions are considered
FAA-approved if they are approved by the State of Design Authority
(or their delegated agent). You are required to assure the product
is airworthy before it is returned to service.
(3) Reporting Requirements: For any reporting requirement in
this AD, under the provisions of the Paperwork Reduction Act, the
Office of Management and Budget (OMB) has approved the information
collection requirements and has assigned OMB Control Number 2120-
0056.
Related Information
(h) Refer to MCAI Israeli Airworthiness Directive 29-07-01-11,
dated May 28, 2007, and Gulfstream Service Bulletin 200-29-316,
dated June 29, 2007, for related information.
Issued in Renton, Washington, on March 3, 2008.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E8-5015 Filed 3-12-08; 8:45 am]
BILLING CODE 4910-13-P
