Airworthiness Directives; Fokker Model F.28 Mark 0070 and 0100 Airplanes, 53709-53711 [E7-18553]
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Federal Register / Vol. 72, No. 182 / Thursday, September 20, 2007 / Proposed Rules
§ 39.13
[Amended]
2. The Federal Aviation
Administration (FAA) amends § 39.13
by adding the following new
airworthiness directive (AD):
Boeing: Docket No. FAA–2007–29255;
Directorate Identifier 2007–NM–085–AD.
Comments Due Date
(a) The FAA must receive comments on
this AD action by November 5, 2007.
Affected ADs
(b) AD 93–08–04, amendment 39–8551.
Applicability
(c) This AD applies to Boeing Model 737–
100, –200, –200C, –300, –400, and –500
series airplanes, certificated in any category;
as identified in Boeing Service Bulletin 737–
53–1268, dated August 25, 2006.
Unsafe Condition
(d) This AD results from a report of several
cracked stringer tie clips. We are issuing this
AD to prevent multiple cracked stringer tie
clips and damaged skin and frames, which
could lead to the skin and frame structure
developing cracks and consequent
decompression of the airplane.
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.
pwalker on PROD1PC71 with PROPOSALS
Service Bulletin References
(f) The term ‘‘the service bulletin,’’ as used
in this AD, means the Accomplishment
Instructions of Boeing Service Bulletin 737–
53–1268, dated August 25, 2006.
Inspection A: Required Internal Inspections,
Applicable Corrective and Related
Investigative Actions, and Measurement
(g) Do repetitive internal eddy current and
detailed inspections to detect cracked
stringer tie clips; do applicable corrective
and related investigative actions, if
necessary; and measure the fastener spacing
and the edge margin; as applicable. Do all
applicable actions at the applicable
compliance times and repeat intervals
identified in tables 2 through 8 inclusive of
paragraph 1.E., ‘‘Compliance,’’ of the service
bulletin; except as provided by paragraphs
(i), (j), and (k) of this AD. Do all applicable
actions in accordance with the
Accomplishment Instructions of the service
bulletin, except as provided by paragraph (m)
of this AD.
Note 1: The service bulletin refers to
Boeing Service Bulletin 737–53A1177,
Revision 6, dated May 31, 2001, as an
additional source of service information for
doing an internal eddy current inspection of
the lap joint for certain airplane
configurations.
Inspection B: Temporary Alternative
External Inspections and Corrective Actions
(h) As a temporary alternative to doing the
actions required by paragraph (g) of this AD,
do repetitive external general visual
inspections of the skin and lap joints for
VerDate Aug<31>2005
17:12 Sep 19, 2007
Jkt 211001
cracks and evidence of overload resulting
from cracked stringer tie clips, and
applicable corrective actions if necessary. Do
all applicable actions at the applicable
compliance times and repeat intervals
identified in tables 9 through 12 inclusive of
paragraph 1.E., ‘‘Compliance,’’ of the service
bulletin, but not to exceed the flight cycles
in the ‘‘Inspection Period Allowed’’ column
of the tables; except as provided by
paragraphs (i) and (l) of this AD. Do all
applicable actions in accordance with the
Accomplishment Instructions of the service
bulletin, except as provided by paragraph (m)
of this AD.
Note 2: The eddy current inspection along
the stringer tie clip radius to detect damage
and replacement, as applicable, specified in
paragraph 3.B.5. of the Accomplishment
Instructions of the service bulletin are not
required by this AD. The actions are optional
and can be done in addition to and at the
same time as the actions required by
paragraph (g) of this AD.
Exceptions to Service Information
(i) Where the service bulletin specifies a
compliance time after the date of the service
bulletin, this AD requires compliance within
the specified compliance time after the
effective date of this AD.
(j) For Model 737–100, –200, and –200C
series airplanes, on which Boeing Service
Bulletin 737–53–1085, Revision 1, dated May
10, 1990, has not been done in accordance
with AD 93–08–04: As of the effective date
of this AD, do the applicable inspections
from STA 559 to STA 887 in accordance with
paragraph (g) of this AD, at the applicable
compliance times specified in paragraph (b)
of AD 93–08–04.
(k) In the first row of tables 5 and 6 of
paragraph 1.E., ‘‘Compliance,’’ of the service
bulletin, where the service bulletin specifies
a compliance time of before 25,000 total
airplane flight cycles, this AD requires a
compliance time of before the accumulation
of 25,000 total flight cycles, or within 2 years
after the effective date of this AD, whichever
occurs later.
(l) Where the service bulletin specifies no
starting point (e.g., ‘‘after the date on the
service bulletin’’) for a grace period, this AD
requires compliance within the specified
grace period after the effective date of this
AD.
(m) Where the service bulletin specifies to
contact Boeing for appropriate action: Before
further flight, repair the discrepancy using a
method approved in accordance with the
procedures specified in paragraph (o) of this
AD.
Certain Actions End Certain Requirements of
AD 93–08–04
(n) Accomplishment of the internal eddy
current and detailed inspections for STA 559
to STA 887 in accordance with paragraph (g)
of this AD constitutes compliance with the
inspections required by paragraph (a) of AD
93–08–04, as it pertains to Boeing Service
Bulletin 737–53–1085, Revision 1, dated May
10, 1990. Accomplishment of the internal
eddy current and detailed inspections does
not terminate the remaining requirements of
AD 93–08–04, as it applies to other service
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Frm 00011
Fmt 4702
Sfmt 4702
53709
bulletins. Operators are required to continue
to inspect and/or modify per the other
service bulletins listed in that AD.
Alternative Methods of Compliance
(AMOCs)
(o)(1) The Manager, Seattle Aircraft
Certification Office (ACO), FAA, has the
authority to approve AMOCs for this AD, if
requested in accordance with the procedures
found in 14 CFR 39.19.
(2) To request a different method of
compliance or a different compliance time
for this AD, follow the procedures in 14 CFR
39.19. 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.
(3) An AMOC that provides an acceptable
level of safety may be used for any repair
required by this AD, if it is approved by an
Authorized Representative for the Boeing
Commercial Airplanes Delegation Option
Authorization Organization who has been
authorized by the Manager, Seattle ACO, to
make those findings. For a repair method to
be approved, the repair must meet the
certification basis of the airplane, and the
approval must specifically refer to this AD.
Issued in Renton, Washington, on
September 12, 2007.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E7–18554 Filed 9–19–07; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2007–29256; Directorate
Identifier 2007–NM–137–AD]
RIN 2120–AA64
Airworthiness Directives; Fokker
Model F.28 Mark 0070 and 0100
Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
SUMMARY: We propose to adopt a new
airworthiness directive (AD) for the
products listed above. This proposed
AD results from mandatory continuing
airworthiness information (MCAI)
originated by an aviation authority of
another country to identify and correct
an unsafe condition on an aviation
product. The MCAI describes the unsafe
condition as:
Two events have been reported of Fokker
100 (F.28 Mk.0100) aircraft, where the Nose
Landing Gear (NLG) failed to extend in the
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53710
Federal Register / Vol. 72, No. 182 / Thursday, September 20, 2007 / Proposed Rules
normal mode and problems were
experienced to open the NLG doors, almost
preventing extension of the NLG in the
emergency (alternate) mode. Subsequent
investigation and tests have shown that the
friction of the bearing in the roller of the NLG
Door Uplock Bracket Assembly is high,
causing increased resistance in the
mechanical system that unlocks the NLG
doors. This condition, if not corrected, may
result in a NLG up landing, which is
considered a hazardous event.
The proposed AD would require
actions that are intended to address the
unsafe condition described in the MCAI.
DATES: We must receive comments on
this proposed AD by October 22, 2007.
ADDRESSES: You may send comments by
any of the following methods:
• DOT Docket Web Site: Go to
https://dms.dot.gov and follow the
instructions for sending your comments
electronically.
• Fax: (202) 493–2251.
• Mail: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue, SE.,
Washington, DC 20590.
• Hand Delivery: Room W12–140 on
the ground floor of the West Building,
1200 New Jersey Avenue, SE.,
Washington, DC, between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays.
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the
instructions for submitting comments.
pwalker on PROD1PC71 with PROPOSALS
Examining the AD Docket
You may examine the AD docket on
the Internet at https://dms.dot.gov; or in
person at the Docket Operations office
between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
The AD docket contains this proposed
AD, the regulatory evaluation, any
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, FAA,
Transport Airplane Directorate, 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–2007–29256; Directorate Identifier
VerDate Aug<31>2005
17:12 Sep 19, 2007
Jkt 211001
2007–NM–137–AD’’ at the beginning of
your comments. We specifically invite
comments on the overall regulatory,
economic, environmental, and energy
aspects of this proposed AD. We will
consider all comments received by the
closing date and may amend this
proposed AD based on those comments.
We will post all comments we
receive, without change, to https://
dms.dot.gov, including any personal
information you provide. We will also
post a report summarizing each
substantive verbal contact we receive
about this proposed AD.
Discussion
The Civil Aviation Authority—The
Netherlands (CAA–NL), which is the
aviation authority for the Netherlands,
has issued Dutch Airworthiness
Directive NL–2006–004, dated February
28, 2006 (referred to after this as ‘‘the
MCAI’’), to correct an unsafe condition
for the specified products. The MCAI
states:
Two events have been reported of Fokker
100 (F.28 Mk.0100) aircraft, where the Nose
Landing Gear (NLG) failed to extend in the
normal mode and problems were
experienced to open the NLG doors, almost
preventing extension of the NLG in the
emergency (alternate) mode. Subsequent
investigation and tests have shown that the
friction of the bearing in the roller of the NLG
Door Uplock Bracket Assembly is high,
causing increased resistance in the
mechanical system that unlocks the NLG
doors. This condition, if not corrected, may
result in a NLG up landing, which is
considered a hazardous event. Since a
potentially unsafe condition has been
identified that may exist or develop on
aircraft of the same type design, this
Airworthiness Directive requires the
introduction of an improved roller in the
NLG Door Uplock Bracket Assembly.
You may obtain further information by
examining the MCAI in the AD docket.
Relevant Service Information
Fokker Services B.V. has issued
Service Bulletin SBF100–32–143, dated
February 15, 2006, and Component
Service Bulletin D76501–32–17, dated
February 15, 2006. The actions
described in this service information
(replacing the roller in the uplock
bracket) 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
PO 00000
Frm 00012
Fmt 4702
Sfmt 4702
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 13 products of U.S. registry.
We also estimate that it would take
about 5 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 $135 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
$6,955, or $535 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
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Federal Register / Vol. 72, No. 182 / Thursday, September 20, 2007 / Proposed Rules
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.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new AD:
Fokker Services B.V.: Docket No. FAA–
2007–29256; Directorate Identifier 2007–
NM–137–AD.
pwalker on PROD1PC71 with PROPOSALS
Comments Due Date
(a) We must receive comments by October
22, 2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Fokker Model F.28
Mark 0070 and 0100 airplanes, certificated in
any category, all serial numbers.
VerDate Aug<31>2005
17:12 Sep 19, 2007
Jkt 211001
Subject
(d) Air Transport Association (ATA) of
America Code 32: Landing gear.
Reason
(e) The mandatory continuing
airworthiness information (MCAI) states:
Two events have been reported of Fokker
100 (F.28 Mk.0100) aircraft, where the Nose
Landing Gear (NLG) failed to extend in the
normal mode and problems were
experienced to open the NLG doors, almost
preventing extension of the NLG in the
emergency (alternate) mode. Subsequent
investigation and tests have shown that the
friction of the bearing in the roller of the NLG
Door Uplock Bracket Assembly is high,
causing increased resistance in the
mechanical system that unlocks the NLG
doors. This condition, if not corrected, may
result in a NLG up landing, which is
considered a hazardous event. Since a
potentially unsafe condition has been
identified that may exist or develop on
aircraft of the same type design, this
Airworthiness Directive requires the
introduction of an improved roller in the
NLG Door Uplock Bracket Assembly.
Actions and Compliance
(f) Unless already done, do the following
actions.
(1) Within 4,000 flight hours after the
effective date of this AD, modify the NLG
Door Uplock Bracket Assembly, in
accordance with the Accomplishment
Instructions of Fokker Service Bulletin
SBF100–32–143, dated February 15, 2006.
(2) As of 18 months after the effective date
of this AD, no spare NLG Door Uplock
Bracket Assembly may be installed as a
replacement part unless it has been modified
in accordance with the Accomplishment
Instructions of Fokker Component Service
Bulletin D76501–32–17, dated February 15,
2006.
Note: This AD differs from the MCAI and/
or service information as follows: No
difference.
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: 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
PO 00000
Frm 00013
Fmt 4702
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 Dutch Airworthiness
Directive NL–2006–004, dated February 28,
2006, Fokker Service Bulletin SBF100–32–
143, dated February 15, 2006, and Fokker
Component Service Bulletin D76501–32–17,
dated February 15, 2006, for related
information.
Issued in Renton, Washington, on
September 12, 2007.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E7–18553 Filed 9–19–07; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF HEALTH AND
HUMAN SERVICES
Food and Drug Administration
21 CFR Part 2
[Docket No. 2007N–0262]
RIN 0910–AF92
Use of Ozone-Depleting Substances;
Removal of Essential-Use Designation
(Epinephrine)
AGENCY:
Sfmt 4702
Food and Drug Administration,
HHS.
ACTION:
FAA AD Differences
53711
Proposed rule.
SUMMARY: The Food and Drug
Administration (FDA), after
consultation with the Environmental
Protection Agency (EPA), is proposing
to amend FDA’s regulation on the use of
ozone-depleting substances (ODSs) in
self-pressurized containers to remove
the essential-use designation for
epinephrine used in oral pressurized
metered-dose inhalers (MDIs). FDA has
tentatively concluded that there are no
substantial technical barriers to
formulating epinephrine as a product
that does not release ODSs, and
therefore epinephrine would no longer
be an essential use of ODSs. If the
essential-use designation is removed,
epinephrine MDIs containing an ODS
could not be marketed after a suitable
transition period. We will hold an open
public meeting on the essential use of
epinephrine on a date to be announced
later.
DATES: Submit written or electronic
comments by November 19, 2007.
E:\FR\FM\20SEP1.SGM
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]]>Agencies
[Federal Register Volume 72, Number 182 (Thursday, September 20, 2007)]
[Proposed Rules]
[Pages 53709-53711]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E7-18553]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2007-29256; Directorate Identifier 2007-NM-137-AD]
RIN 2120-AA64
Airworthiness Directives; Fokker Model F.28 Mark 0070 and 0100
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:
Two events have been reported of Fokker 100 (F.28 Mk.0100)
aircraft, where the Nose Landing Gear (NLG) failed to extend in the
[[Page 53710]]
normal mode and problems were experienced to open the NLG doors,
almost preventing extension of the NLG in the emergency (alternate)
mode. Subsequent investigation and tests have shown that the
friction of the bearing in the roller of the NLG Door Uplock Bracket
Assembly is high, causing increased resistance in the mechanical
system that unlocks the NLG doors. This condition, if not corrected,
may result in a NLG up landing, which is considered a hazardous
event.
The proposed AD would require actions that are intended to address
the unsafe condition described in the MCAI.
DATES: We must receive comments on this proposed AD by October 22,
2007.
ADDRESSES: You may send comments by any of the following methods:
DOT Docket Web Site: Go to https://dms.dot.gov and follow
the instructions for sending your comments electronically.
Fax: (202) 493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590.
Hand Delivery: Room W12-140 on the ground floor of the
West Building, 1200 New Jersey Avenue, SE., Washington, DC, between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
Federal eRulemaking Portal: https://www.regulations.gov.
Follow the instructions for submitting comments.
Examining the AD Docket
You may examine the AD docket on the Internet at https://
dms.dot.gov; or in person at the Docket Operations office 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, FAA, Transport Airplane Directorate,
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-2007-
29256; Directorate Identifier 2007-NM-137-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this proposed AD. We
will consider all comments received by the closing date and may amend
this proposed AD based on those comments.
We will post all comments we receive, without change, to https://
dms.dot.gov, including any personal information you provide. We will
also post a report summarizing each substantive verbal contact we
receive about this proposed AD.
Discussion
The Civil Aviation Authority--The Netherlands (CAA-NL), which is
the aviation authority for the Netherlands, has issued Dutch
Airworthiness Directive NL-2006-004, dated February 28, 2006 (referred
to after this as ``the MCAI''), to correct an unsafe condition for the
specified products. The MCAI states:
Two events have been reported of Fokker 100 (F.28 Mk.0100)
aircraft, where the Nose Landing Gear (NLG) failed to extend in the
normal mode and problems were experienced to open the NLG doors,
almost preventing extension of the NLG in the emergency (alternate)
mode. Subsequent investigation and tests have shown that the
friction of the bearing in the roller of the NLG Door Uplock Bracket
Assembly is high, causing increased resistance in the mechanical
system that unlocks the NLG doors. This condition, if not corrected,
may result in a NLG up landing, which is considered a hazardous
event. Since a potentially unsafe condition has been identified that
may exist or develop on aircraft of the same type design, this
Airworthiness Directive requires the introduction of an improved
roller in the NLG Door Uplock Bracket Assembly.
You may obtain further information by examining the MCAI in the AD
docket.
Relevant Service Information
Fokker Services B.V. has issued Service Bulletin SBF100-32-143,
dated February 15, 2006, and Component Service Bulletin D76501-32-17,
dated February 15, 2006. The actions described in this service
information (replacing the roller in the uplock bracket) 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 13 products of U.S. registry. We also estimate that
it would take about 5 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 $135 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 $6,955, or $535 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
[[Page 53711]]
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:
Fokker Services B.V.: Docket No. FAA-2007-29256; Directorate
Identifier 2007-NM-137-AD.
Comments Due Date
(a) We must receive comments by October 22, 2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Fokker Model F.28 Mark 0070 and 0100
airplanes, certificated in any category, all serial numbers.
Subject
(d) Air Transport Association (ATA) of America Code 32: Landing
gear.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
Two events have been reported of Fokker 100 (F.28 Mk.0100)
aircraft, where the Nose Landing Gear (NLG) failed to extend in the
normal mode and problems were experienced to open the NLG doors,
almost preventing extension of the NLG in the emergency (alternate)
mode. Subsequent investigation and tests have shown that the
friction of the bearing in the roller of the NLG Door Uplock Bracket
Assembly is high, causing increased resistance in the mechanical
system that unlocks the NLG doors. This condition, if not corrected,
may result in a NLG up landing, which is considered a hazardous
event. Since a potentially unsafe condition has been identified that
may exist or develop on aircraft of the same type design, this
Airworthiness Directive requires the introduction of an improved
roller in the NLG Door Uplock Bracket Assembly.
Actions and Compliance
(f) Unless already done, do the following actions.
(1) Within 4,000 flight hours after the effective date of this
AD, modify the NLG Door Uplock Bracket Assembly, in accordance with
the Accomplishment Instructions of Fokker Service Bulletin SBF100-
32-143, dated February 15, 2006.
(2) As of 18 months after the effective date of this AD, no
spare NLG Door Uplock Bracket Assembly may be installed as a
replacement part unless it has been modified in accordance with the
Accomplishment Instructions of Fokker Component Service Bulletin
D76501-32-17, dated February 15, 2006.
FAA AD Differences
Note: This AD differs from the MCAI and/or service information
as follows: No difference.
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: 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 Dutch Airworthiness Directive NL-2006-004,
dated February 28, 2006, Fokker Service Bulletin SBF100-32-143,
dated February 15, 2006, and Fokker Component Service Bulletin
D76501-32-17, dated February 15, 2006, for related information.
Issued in Renton, Washington, on September 12, 2007.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E7-18553 Filed 9-19-07; 8:45 am]
BILLING CODE 4910-13-P
