Airworthiness Directives; Dassault Model Mystere-Falcon 50 Airplanes, 39628-39630 [E8-15714]
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39628
Federal Register / Vol. 73, No. 133 / Thursday, July 10, 2008 / Proposed Rules
2nd stage HPT vane assembly. The
proposed AD would require you to use
the service information described
previously to perform these actions.
Interim Action
These actions are interim actions and
we may take further rulemaking actions
in the future.
Costs of Compliance
We estimate that this proposed AD
would affect 240 engines installed on
airplanes of U.S. registry. We also
estimate that it would take about 5
work-hours per engine to perform the
proposed actions, that each engine
might require two inspections, and that
the average labor rate is $80 per workhour. Based on these figures, we
estimate the total cost of the proposed
AD to U.S. operators to be $192,000.
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.
mstockstill on PROD1PC66 with PROPOSALS
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
VerDate Aug<31>2005
16:05 Jul 09, 2008
Jkt 214001
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.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive:
Pratt & Whitney: Docket No. FAA–2008–
0759; Directorate Identifier 2008–NE–
02–AD.
Comments Due Date
(a) The Federal Aviation Administration
(FAA) must receive comments on this
airworthiness directive (AD) action by
September 8, 2008.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Pratt & Whitney
(PW) JT9D–7, –7A, –7AH, –7H, –7F, and –7J
turbofan engines. These engines are installed
on, but not limited to, Boeing 747 series
airplanes.
Unsafe Condition
(d) This AD results from an uncontained
failure of a 2nd stage high-pressure turbine
(HPT) rotor disk that caused the engine to
separate from the airplane. We are issuing
this AD to prevent failure of the 2nd stage
HPT rotor disk, which could result in
uncontained engine failure, damage to the
airplane, and the engine separating from the
airplane.
borescope-inspect the 2nd stage HPT rotor
and stator assembly either on-wing or in the
shop.
(2) If you see any damage or contact
between the 2nd stage HPT vanes and the
2nd stage HPT rotor, remove the engine from
service.
Repetitive Borescope Inspection
(g) Thereafter, within 1,000 cycles-sincelast inspection, do the following:
(1) Use the Accomplishment Instructions
of PW ASB JT9D A6488 Revision 1, dated
April 18, 2008, to borescope-inspect the 2nd
stage HPT rotor and stator assembly either
on-wing or in the shop.
(2) If you see any damage or contact
between the 2nd stage HPT vanes and the
2nd stage HPT rotor, remove the engine from
service.
Optional Terminating Action
(h) Installing the 2nd stage HPT vanes as
specified in the JT9D–7 Engine Manual
Revision 122, dated February 15, 2008,
terminates the repetitive inspection
requirement specified in paragraph (g) of this
AD.
Alternative Methods of Compliance
(i) 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
(j) PW ASB JT9D A6488, Revision 1, dated
April 18, 2008, pertains to the subject of this
AD.
(k) Contact Mark Riley, Aerospace
Engineer, Engine Certification Office, FAA,
Engine and Propeller Directorate, 12 New
England Executive Park, Burlington, MA
01803; e-mail: mark.riley@faa.gov; telephone
(781) 238–7758; fax (781) 238–7199, for more
information about this AD.
Issued in Burlington, Massachusetts, on
July 3, 2008.
Diane Cook,
Acting Manager, Engine and Propeller
Directorate, Aircraft Certification Service.
[FR Doc. E8–15682 Filed 7–9–08; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
Compliance
(e) You are responsible for having the
actions required by this AD performed within
the compliance times specified unless the
actions have already been done.
14 CFR Part 39
Initial Borescope Inspection
(f) Within 100 cycles-in-service (CIS) after
the effective date of this AD, or within 1,000
CIS after the last HPT module overhaul,
whichever occurs later, do the following:
(1) Use the Accomplishment Instructions
of PW Alert Service Bulletin (ASB) JT9D
A6488, Revision 1, dated April 18, 2008, to
Airworthiness Directives; Dassault
Model Mystere-Falcon 50 Airplanes
PO 00000
Frm 00002
Fmt 4702
Sfmt 4702
[Docket No. FAA–2008–0732; Directorate
Identifier 2008–NM–053–AD]
RIN 2120–AA64
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
E:\FR\FM\10JYP1.SGM
10JYP1
Federal Register / Vol. 73, No. 133 / Thursday, July 10, 2008 / Proposed Rules
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:
* * * [S]ome aircraft could have
experienced wing overpressure consecutive
to the latent failure of both [pressure relief]
valve units. Overpressure although not
sufficient to cause static damages could have
impaired the fatigue damage tolerance of the
wing structure. * * *
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 August 11, 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.
mstockstill on PROD1PC66 with PROPOSALS
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: Tom
Rodriguez, Aerospace Engineer,
International Branch, ANM–116,
Transport Airplane Directorate, FAA,
1601 Lind Avenue, SW., Renton,
Washington 98057–3356; telephone
(425) 227–1137; fax (425) 227–1149.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written
relevant data, views, or arguments about
VerDate Aug<31>2005
16:05 Jul 09, 2008
Jkt 214001
this proposed AD. Send your comments
to an address listed under the
ADDRESSES section. Include ‘‘Docket No.
FAA–2008–0732; Directorate Identifier
2008–NM–053–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 European Aviation Safety Agency
(EASA), which is the Technical Agent
for the Member States of the European
Community, has issued EASA
Airworthiness Directive 2008–0021,
dated January 31, 2008 (referred to after
this as ‘‘the MCAI’’), to correct an unsafe
condition for the specified products.
The MCAI states:
Analysed in-service events revealed that
corrosion of pressure relief valves in wing
fuel tanks was likely to occur well before
reaching their Time Between Overhaul (TBO)
and could make the valves stick in the closed
position.
Therefore some aircraft could have
experienced wing overpressure consecutive
to the latent failure of both valve units.
Overpressure although not sufficient to cause
static damages could have impaired the
fatigue damage tolerance of the wing
structure. Consequently this Airworthiness
Directive (AD) mandates introduction of a
new repetitive inspection of the wing
structure.
The repetitive ultrasonic inspection is
intended to detect incipient cracking on
the stiffeners of the right-hand and lefthand wing lower panels between ribs 13
and 17 (the inspection area extends to
just beyond rib 16). The corrective
actions if any cracking is found include
contacting Dassault for repair
instructions, and doing the repair. You
may obtain further information by
examining the MCAI in the AD docket.
Relevant Service Information
Dassault has issued Temporary
Revision 74, dated November 2007, to
the Dassault Falcon 50 Maintenance
Manual, Maintenance Procedure 57–
401, ‘‘Non-Destructive Check of the
Wing Lower Panels Stiffeners between
Ribs 13 and 16 (ATA 57–00–21).’’ The
actions described in this service
information are intended to correct the
unsafe condition identified in the
MCAI.
PO 00000
Frm 00003
Fmt 4702
Sfmt 4702
39629
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
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 247 products of U.S.
registry. We also estimate that it would
take about 6 work-hours per product to
comply with the basic requirements of
this proposed AD. The average labor
rate is $80 per work-hour. Based on
these figures, we estimate the cost of the
proposed AD on U.S. operators to be
$118,560, or $480 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
E:\FR\FM\10JYP1.SGM
10JYP1
39630
Federal Register / Vol. 73, No. 133 / Thursday, July 10, 2008 / Proposed Rules
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:
1. The authority citation for part 39
continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
[Amended]
2. The FAA amends § 39.13 by adding
the following new AD:
mstockstill on PROD1PC66 with PROPOSALS
Dassault Aviation: Docket No. FAA–2008–
0732; Directorate Identifier 2008–NM–
053–AD.
Comments Due Date
(a) We must receive comments by August
11, 2008.
Affected ADs
(b) None.
Applicability
(c) This AD applies to all Dassault Model
Mystere-Falcon 50 airplanes, certificated in
any category.
VerDate Aug<31>2005
16:05 Jul 09, 2008
Jkt 214001
Reason
(e) The mandatory continuing
airworthiness information (MCAI) states:
Analysed in-service events revealed that
corrosion of pressure relief valves in wing
fuel tanks was likely to occur well before
reaching their Time Between Overhaul (TBO)
and could make the valves stick in the closed
position.
Therefore some aircraft could have
experienced wing overpressure consecutive
to the latent failure of both valve units.
Overpressure although not sufficient to cause
static damages could have impaired the
fatigue damage tolerance of the wing
structure. Consequently this Airworthiness
Directive (AD) mandates introduction of a
new repetitive inspection of the wing
structure.
The repetitive ultrasonic inspection is
intended to detect incipient cracking on the
stiffeners of the right-hand and left-hand
wing lower panels between ribs 13 and 17
(the inspection area extends to just beyond
rib 16). The corrective actions if any cracking
is found include contacting Dassault for
repair instructions, and doing the repair.
Actions and Compliance
(f) Unless already accomplished, do the
following actions: Prior to the accumulation
of 14,200 total flight cycles, or within 160
flight cycles after the effective date of this
AD, whichever occurs later, do the ultrasonic
inspection described in Temporary Revision
74, dated November 2007, to the Dassault
Falcon 50 Maintenance Manual, Maintenance
Procedure 57–401, ‘‘Non-Destructive Check
of the Wing Lower Panels Stiffeners between
Ribs 13 and 16 (ATA 57–00–21).’’ Do all
applicable corrective actions before further
flight. Repeat the inspection thereafter at
intervals not to exceed 5,350 flight cycles.
FAA AD Differences
Note: This AD differs from the MCAI and/
or service information as follows: No
differences.
PART 39—AIRWORTHINESS
DIRECTIVES
§ 39.13
Subject
(d) Air Transport Association (ATA) of
America Code 57: Wings.
Other FAA AD Provisions
(g) The following provisions also apply to
this AD:
(1) Alternative Methods of Compliance
(AMOCs): The Manager, ANM–116,
International Branch, Transport Airplane
Directorate, 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: Tom Rodriguez,
Aerospace Engineer, 1601 Lind Avenue, SW.,
Renton, Washington 98057–3356; telephone
(425) 227–1137; 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
PO 00000
Frm 00004
Fmt 4702
Sfmt 4702
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 European Aviation
Safety Agency (EASA) Airworthiness
Directive 2008–0021, dated January 31, 2008,
and Temporary Revision 74, dated November
2007, to the Dassault Falcon 50 Maintenance
Manual, Maintenance Procedure 57–401,
‘‘Non-Destructive Check of the Wing Lower
Panels Stiffeners between Ribs 13 and 16
(ATA 57–00–21),’’ for related information.
Issued in Renton, Washington, on June 27,
2008.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E8–15714 Filed 7–9–08; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF THE TREASURY
Internal Revenue Service
26 CFR Part 1
[REG–142040–07]
RIN 1545–BH53
Reasonable Good Faith Interpretation
of Required Minimum Distribution
Rules by Governmental Plans
Internal Revenue Service (IRS),
Treasury.
ACTION: Notice of proposed rulemaking.
AGENCY:
SUMMARY: This document contains
proposed regulations under sections
401(a)(9) and 403(b) of the Internal
Revenue Code (Code) to permit a
governmental plan to comply with the
required minimum distribution rules by
using a reasonable and good faith
interpretation of the statute. These
proposed regulations will affect
administrators of, employers
maintaining, participants in, and
beneficiaries of governmental plans.
DATES: Written or electronic comments
and requests for a public hearing must
be received by October 8, 2008.
ADDRESSES: Send submissions to:
CC:PA:LPD:PR (REG–142040–07), room
5203, Internal Revenue Service, PO Box
7604, Ben Franklin Station, Washington
DC 20044. Submissions may be handdelivered Monday through Friday
between the hours of 8 a.m. and 4 p.m.
to: CC:PA:LPD:PR (REG–142040–07),
E:\FR\FM\10JYP1.SGM
10JYP1
]]>Agencies
[Federal Register Volume 73, Number 133 (Thursday, July 10, 2008)]
[Proposed Rules]
[Pages 39628-39630]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-15714]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2008-0732; Directorate Identifier 2008-NM-053-AD]
RIN 2120-AA64
Airworthiness Directives; Dassault Model Mystere-Falcon 50
Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
[[Page 39629]]
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:
* * * [S]ome aircraft could have experienced wing overpressure
consecutive to the latent failure of both [pressure relief] valve
units. Overpressure although not sufficient to cause static damages
could have impaired the fatigue damage tolerance of the wing
structure. * * *
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 August 11, 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: Tom Rodriguez, Aerospace Engineer,
International Branch, ANM-116, Transport Airplane Directorate, FAA,
1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425)
227-1137; 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-2008-0732;
Directorate Identifier 2008-NM-053-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 European Aviation Safety Agency (EASA), which is the Technical
Agent for the Member States of the European Community, has issued EASA
Airworthiness Directive 2008-0021, dated January 31, 2008 (referred to
after this as ``the MCAI''), to correct an unsafe condition for the
specified products. The MCAI states:
Analysed in-service events revealed that corrosion of pressure
relief valves in wing fuel tanks was likely to occur well before
reaching their Time Between Overhaul (TBO) and could make the valves
stick in the closed position.
Therefore some aircraft could have experienced wing overpressure
consecutive to the latent failure of both valve units. Overpressure
although not sufficient to cause static damages could have impaired
the fatigue damage tolerance of the wing structure. Consequently
this Airworthiness Directive (AD) mandates introduction of a new
repetitive inspection of the wing structure.
The repetitive ultrasonic inspection is intended to detect
incipient cracking on the stiffeners of the right-hand and left-hand
wing lower panels between ribs 13 and 17 (the inspection area extends
to just beyond rib 16). The corrective actions if any cracking is found
include contacting Dassault for repair instructions, and doing the
repair. You may obtain further information by examining the MCAI in the
AD docket.
Relevant Service Information
Dassault has issued Temporary Revision 74, dated November 2007, to
the Dassault Falcon 50 Maintenance Manual, Maintenance Procedure 57-
401, ``Non-Destructive Check of the Wing Lower Panels Stiffeners
between Ribs 13 and 16 (ATA 57-00-21).'' 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 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 247 products of U.S. registry. We also estimate that
it would take about 6 work-hours per product to comply with the basic
requirements of this proposed AD. The average labor rate is $80 per
work-hour. Based on these figures, we estimate the cost of the proposed
AD on U.S. operators to be $118,560, or $480 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
[[Page 39630]]
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:
Dassault Aviation: Docket No. FAA-2008-0732; Directorate Identifier
2008-NM-053-AD.
Comments Due Date
(a) We must receive comments by August 11, 2008.
Affected ADs
(b) None.
Applicability
(c) This AD applies to all Dassault Model Mystere-Falcon 50
airplanes, certificated in any category.
Subject
(d) Air Transport Association (ATA) of America Code 57: Wings.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
Analysed in-service events revealed that corrosion of pressure
relief valves in wing fuel tanks was likely to occur well before
reaching their Time Between Overhaul (TBO) and could make the valves
stick in the closed position.
Therefore some aircraft could have experienced wing overpressure
consecutive to the latent failure of both valve units. Overpressure
although not sufficient to cause static damages could have impaired
the fatigue damage tolerance of the wing structure. Consequently
this Airworthiness Directive (AD) mandates introduction of a new
repetitive inspection of the wing structure.
The repetitive ultrasonic inspection is intended to detect
incipient cracking on the stiffeners of the right-hand and left-hand
wing lower panels between ribs 13 and 17 (the inspection area
extends to just beyond rib 16). The corrective actions if any
cracking is found include contacting Dassault for repair
instructions, and doing the repair.
Actions and Compliance
(f) Unless already accomplished, do the following actions: Prior
to the accumulation of 14,200 total flight cycles, or within 160
flight cycles after the effective date of this AD, whichever occurs
later, do the ultrasonic inspection described in Temporary Revision
74, dated November 2007, to the Dassault Falcon 50 Maintenance
Manual, Maintenance Procedure 57-401, ``Non-Destructive Check of the
Wing Lower Panels Stiffeners between Ribs 13 and 16 (ATA 57-00-
21).'' Do all applicable corrective actions before further flight.
Repeat the inspection thereafter at intervals not to exceed 5,350
flight cycles.
FAA AD Differences
Note: This AD differs from the MCAI and/or service information
as follows: No differences.
Other FAA AD Provisions
(g) The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, ANM-
116, International Branch, Transport Airplane Directorate, 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: Tom
Rodriguez, Aerospace Engineer, 1601 Lind Avenue, SW., Renton,
Washington 98057-3356; telephone (425) 227-1137; 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 European Aviation Safety Agency (EASA)
Airworthiness Directive 2008-0021, dated January 31, 2008, and
Temporary Revision 74, dated November 2007, to the Dassault Falcon
50 Maintenance Manual, Maintenance Procedure 57-401, ``Non-
Destructive Check of the Wing Lower Panels Stiffeners between Ribs
13 and 16 (ATA 57-00-21),'' for related information.
Issued in Renton, Washington, on June 27, 2008.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E8-15714 Filed 7-9-08; 8:45 am]
BILLING CODE 4910-13-P
