Airworthiness Directives; Fokker F.28 Mark 0070 and 0100 Airplanes, 64571-64573 [E8-25890]
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Federal Register / Vol. 73, No. 211 / Thursday, October 30, 2008 / Proposed Rules
manufacturer: Before further flight, replace
the discrepant part (e.g., parts with cracking,
yielding, buckling, and wear damage) with a
new or serviceable part, or repair using a
method approved in accordance with the
procedures specified in paragraph (o) of this
AD.
Credit for Actions Done Using Previous
Service Information
(m) Inspections and corrective actions
done before the effective date of this AD in
accordance with a service bulletin listed in
Table 1 of this AD are acceptable for
compliance with the corresponding
requirements of this AD.
TABLE 1—PREVIOUS SERVICE
BULLETINS
Boeing Alert
Service
Bulletin
Revision
Date
737–71A1462 ..
737–71A1462 ..
737–71A1462 ..
Original ..
1 .............
2 .............
Aug. 29, 2002.
Nov. 7, 2002.
May 29, 2003.
Parts Installation
(n) As of the effective date of this AD, no
person may install an engine on any airplane
unless the inspections specified in paragraph
(g) or (j) of this AD are accomplished and the
center link assembly of the aft engine mount
is found to be installed correctly.
pwalker on PROD1PC71 with PROPOSALS
Alternative Methods of Compliance
(AMOCs)
(o)(1) The Manager, Seattle Aircraft
Certification Office (ACO) FAA, ATTN: Allen
Rauschendorfer, Aerospace Engineer,
Airframe Branch, ANM–120S, FAA, Seattle
Aircraft Certification Office, 1601 Lind
Avenue, SW., Renton, Washington 98057–
3356; telephone (425) 917–6432; fax (425)
917–6590; has the authority to approve
AMOCs for this AD, if requested using 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 October
10, 2008.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E8–25903 Filed 10–29–08; 8:45 am]
BILLING CODE 4910–13–P
VerDate Aug<31>2005
16:41 Oct 29, 2008
Jkt 217001
64571
DEPARTMENT OF TRANSPORTATION
Examining the AD Docket
Federal Aviation Administration
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.
14 CFR Part 39
[Docket No. FAA–2008–1119; Directorate
Identifier 2008–NM–112–AD]
RIN 2120–AA64
Airworthiness Directives; Fokker 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 that would
supersede an existing AD. 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:
Several reports have been received about
roll control problems due to frozen moisture
on the aileron pulleys that are located in the
LH [left-hand] and RH [right-hand] Main
Landing Gear (MLG) wheel bays on the
centre wing rear spar, under the wing to
fuselage fairings. Investigation revealed that
improper sealing of the aerodynamic seals of
the Wing-to-Fuselage Fairings can cause rainor washwater and de-icing fluids to leak onto
the affected aileron pulleys. Exposure of the
aileron pulleys to the leaked moisture in
freezing condition can result in restricted
aileron control movement (partly jammed)
and/or higher control forces. This condition,
if not corrected, could lead to partial loss of
control of the aircraft. * * *
*
*
*
*
*
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 December 1, 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.
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Fmt 4702
Sfmt 4702
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–2008–1119; Directorate Identifier
2008–NM–112–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
On February 15, 2008, we issued AD
2008–04–22, Amendment 39–15394 (73
FR 10650, February 28, 2008). That AD
required actions intended to address an
unsafe condition on the products listed
above.
Since we issued AD 2008–04–22, new
reports of problems due to freezing
moisture in the same area addressed by
AD 2008–04–22 have been received.
The European Aviation Safety Agency
(EASA), which is the Technical Agent
for the Member States of the European
Community, has issued EASA
Airworthiness Directive 2008–0079,
dated April 24, 2008 (referred to after
this as ‘‘the MCAI’’), to correct an unsafe
condition for the specified products.
The MCAI states:
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Federal Register / Vol. 73, No. 211 / Thursday, October 30, 2008 / Proposed Rules
pwalker on PROD1PC71 with PROPOSALS
Several reports have been received about
roll control problems due to frozen moisture
on the aileron pulleys that are located in the
LH [left-hand] and RH [right-hand] Main
Landing Gear (MLG) wheel bays on the
centre wing rear spar, under the wing to
fuselage fairings. Investigation revealed that
improper sealing of the aerodynamic seals of
the Wing-to-Fuselage Fairings can cause rainor washwater and de-icing fluids to leak onto
the affected aileron pulleys. Exposure of the
aileron pulleys to the leaked moisture in
freezing condition can result in restricted
aileron control movement (partly jammed)
and/or higher control forces. This condition,
if not corrected, could lead to partial loss of
control of the aircraft. To address this unsafe
condition, Fokker Services originally
introduced SBF100–53–101 which was made
mandatory through CAA Netherlands (CAA–
NL) AD NL–2005–013 [which corresponds to
FAA AD 2008–04–22, amendment 39–15394]
with a compliance time of 12 months after
November 1, 2005.
Following this, new reports of problems
due to freezing moisture in the same area
have been received. This has prompted
Fokker Services to publish SBF100–53–107,
which introduces an additional one-time
inspection [for deviations] of the
aerodynamic seals of the Wing-to-Fuselage
Fairings and the application of an improved
sealing of the aerodynamic seal by means of
a fillet seam between the upper left and right
fairings and the fuselage skin.
For the reasons described above, this EASA
AD supersedes CAA–NL AD NL–2005–013
and requires an additional one-time
inspection [for deviations] and application of
improved sealing.
This action retains the inspection in AD
2008–04–22. Doing the additional
inspection terminates the requirement
to do the inspection required by the
existing AD. The additional inspection
for deviations includes inspecting for fit
between the left-hand and right-hand
wing-to-fuselage fairings and the
fuselage skin; inspecting for damage to
the aerodynamic seal on the fairings;
inspecting for fit of the aerodynamic
seal to the fuselage; and related
investigative and corrective actions if
necessary. The related investigative
actions include inspecting the
aerodynamic seal for damage (including
wear); inspecting the abrasion resistant
coating for damage (including wear);
and re-inspecting for fit. The corrective
actions include installing a new seal,
restoring the protective coating,
correcting the position of the fairing,
and sealing the gaps between the
fairings and the surrounding structure.
You may obtain further information by
examining the MCAI in the AD docket.
Relevant Service Information
Fokker Services B.V. has issued
Fokker Service Bulletin SBF100–53–
107, dated February 26, 2008. The
actions described in this service
VerDate Aug<31>2005
16:41 Oct 29, 2008
Jkt 217001
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 7 products of U.S. registry.
We also estimate that it would take
about 3 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
$1,680, or $240 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
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Fmt 4702
Sfmt 4702
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.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by
removing Amendment 39–15394 (73 FR
10650, February 28, 2008) and adding
the following new AD:
Fokker Services B.V.: Docket No. FAA–
2008–1119; Directorate Identifier 2008–
NM–112–AD.
Comments Due Date
(a) We must receive comments by
December 1, 2008.
Affected ADs
(b) The proposed AD supersedes AD 2008–
04–22, Amendment 39–15394.
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Federal Register / Vol. 73, No. 211 / Thursday, October 30, 2008 / Proposed Rules
Applicability
(c) This AD applies to Fokker F.28 Mark
0070 and 0100 airplanes, certificated in any
category.
Subject
(d) Air Transport Association (ATA) of
America Code 53: Fuselage.
pwalker on PROD1PC71 with PROPOSALS
Reason
(e) The mandatory continuing
airworthiness information (MCAI) states:
Several reports have been received about
roll control problems due to frozen moisture
on the aileron pulleys that are located in the
LH [left-hand] and RH [right-hand] Main
Landing Gear (MLG) wheel bays on the
centre wing rear spar, under the wing to
fuselage fairings. Investigation revealed that
improper sealing of the aerodynamic seals of
the Wing-to-Fuselage Fairings can cause rainor washwater and de-icing fluids to leak onto
the affected aileron pulleys. Exposure of the
aileron pulleys to the leaked moisture in
freezing condition can result in restricted
aileron control movement (partly jammed)
and/or higher control forces. This condition,
if not corrected, could lead to partial loss of
control of the aircraft. To address this unsafe
condition, Fokker Services originally
introduced SBF100–53–101 which was made
mandatory through CAA Netherlands (CAA–
NL) AD NL–2005–013 [which corresponds to
FAA AD 2008–04–22] with a compliance
time of 12 months after November 1, 2005.
Following this, new reports of problems
due to freezing moisture in the same area
have been received. This has prompted
Fokker Services to publish SBF100–53–107,
which introduces an additional one-time
inspection [for deviations] of the
aerodynamic seals of the Wing-to-Fuselage
Fairings and the application of an improved
sealing of the aerodynamic seal by means of
a fillet seam between the upper left and right
fairings and the fuselage skin.
For the reasons described above, this EASA
AD supersedes CAA–NL AD NL–2005–013
and requires an additional one-time
inspection [for deviations] and application of
improved sealing.
This action retains the inspection in AD
2008–04–22. Doing the additional inspection
terminates the requirement to do the
inspection required by the existing AD. The
additional inspection for deviations includes
inspecting for fit between the left-hand and
right-hand wing-to-fuselage fairings and the
fuselage skin; inspecting for damage to the
aerodynamic seal on the fairings; inspecting
for fit of the aerodynamic seal to the fuselage;
and related investigative and corrective
actions if necessary. The related investigative
actions include inspecting the aerodynamic
seal for damage (including wear); inspecting
the abrasion resistant coating for damage
(including wear); and re-inspecting for fit.
The corrective actions include installing a
new seal, restoring the protective coating,
correcting the position of the fairing, and
sealing the gaps between the fairings and the
surrounding structure.
VerDate Aug<31>2005
16:41 Oct 29, 2008
Jkt 217001
Restatement of Certain Requirements of AD
2008–04–22
(f) Unless already done: Within 12 months
after April 3, 2008 (the effective date of AD
2008–04–22), inspect the wing-to-fuselage
fairings for indications of incorrect fit,
damage, or wear, in accordance with the
Accomplishment Instructions of Fokker
Service Bulletin SBF100–53–101, dated
September 30, 2005 (‘‘the service bulletin’’).
Doing the inspection required by paragraph
(g) of this AD terminates the actions required
by this paragraph.
(1) If no indications of incorrect fit,
damage, or wear are found, no further action
is required by this paragraph.
(2) If any incorrect fit, damage, or wear is
found, before next flight, do related
investigative actions and applicable
corrective actions in accordance with the
Accomplishment Instructions of the service
bulletin.
New Requirements of This AD: Actions and
Compliance
(g) Unless already done: Within 12 months
after the effective date of this AD, inspect for
deviations of the aerodynamic seal of the
wing-to-fuselage fairings and the fuselage
skin, do all applicable related investigative
and corrective actions, and apply a fillet
seam between the fairings and the fuselage
skin, in accordance with the
Accomplishment Instructions of Fokker
Service Bulletin SBF100–53–107, dated
February 26, 2008. Do all applicable related
investigative and corrective actions before
further flight. Accomplishment of this
inspection terminates the actions required by
paragraph (f) of this AD.
FAA AD Differences
Note: This AD differs from the MCAI and/
or service information as follows: No
differences.
Other FAA AD Provisions
(h) 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, International Branch,
ANM–116, Transport Airplane Directorate,
FAA, 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.
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64573
(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
(i) Refer to MCAI European Aviation Safety
Agency Airworthiness Directive 2008–0079,
dated April 24, 2008; Fokker Service Bulletin
SBF100–53–101, dated September 30, 2005;
and Fokker Service Bulletin SBF100–53–107,
dated February 26, 2008; for related
information.
Issued in Renton, Washington, on October
10, 2008.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E8–25890 Filed 10–29–08; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 71
[Docket No. FAA–2008–0661; Airspace
Docket No. 08–AAL–19]
RIN 2120–AA66
Proposed Establishment of Colored
Federal Airway; Alaska
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
SUMMARY: This action proposes to
establish Colored Federal Airway Blue 7
(B–7), in Alaska. This action would add
to the Instrument Flight Rules (IFR)
airway and route structure in Alaska by
providing IFR connectivity between
Bethel, AK and Cape Newenham, AK.
The FAA is proposing this action to
enhance safety and improve the
management of air traffic operations in
the State of Alaska.
DATES: Comments must be received on
or before December 15, 2008.
ADDRESSES: Send comments on this
proposal to the U.S. Department of
Transportation, Docket Operations, M–
30, 1200 New Jersey Avenue, SE., West
Building Ground Floor, Room W12–140,
Washington, DC 20590–0001; telephone:
(202) 366–9826. You must identify FAA
Docket No. FAA–2008–0661 and
Airspace Docket No. 08–AAL–19 at the
beginning of your comments. You may
also submit comments through the
Internet at https://www.regulations.gov.
FOR FURTHER INFORMATION CONTACT: Ken
McElroy, Airspace and Rules Group,
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]]>Agencies
[Federal Register Volume 73, Number 211 (Thursday, October 30, 2008)]
[Proposed Rules]
[Pages 64571-64573]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-25890]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2008-1119; Directorate Identifier 2008-NM-112-AD]
RIN 2120-AA64
Airworthiness Directives; Fokker 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 that would supersede an existing AD. 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:
Several reports have been received about roll control problems
due to frozen moisture on the aileron pulleys that are located in
the LH [left-hand] and RH [right-hand] Main Landing Gear (MLG) wheel
bays on the centre wing rear spar, under the wing to fuselage
fairings. Investigation revealed that improper sealing of the
aerodynamic seals of the Wing-to-Fuselage Fairings can cause rain-or
washwater and de-icing fluids to leak onto the affected aileron
pulleys. Exposure of the aileron pulleys to the leaked moisture in
freezing condition can result in restricted aileron control movement
(partly jammed) and/or higher control forces. This condition, if not
corrected, could lead to partial loss of control of the aircraft. *
* *
* * * * *
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 December 1,
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-2008-1119;
Directorate Identifier 2008-NM-112-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
On February 15, 2008, we issued AD 2008-04-22, Amendment 39-15394
(73 FR 10650, February 28, 2008). That AD required actions intended to
address an unsafe condition on the products listed above.
Since we issued AD 2008-04-22, new reports of problems due to
freezing moisture in the same area addressed by AD 2008-04-22 have been
received. The European Aviation Safety Agency (EASA), which is the
Technical Agent for the Member States of the European Community, has
issued EASA Airworthiness Directive 2008-0079, dated April 24, 2008
(referred to after this as ``the MCAI''), to correct an unsafe
condition for the specified products. The MCAI states:
[[Page 64572]]
Several reports have been received about roll control problems
due to frozen moisture on the aileron pulleys that are located in
the LH [left-hand] and RH [right-hand] Main Landing Gear (MLG) wheel
bays on the centre wing rear spar, under the wing to fuselage
fairings. Investigation revealed that improper sealing of the
aerodynamic seals of the Wing-to-Fuselage Fairings can cause rain-or
washwater and de-icing fluids to leak onto the affected aileron
pulleys. Exposure of the aileron pulleys to the leaked moisture in
freezing condition can result in restricted aileron control movement
(partly jammed) and/or higher control forces. This condition, if not
corrected, could lead to partial loss of control of the aircraft. To
address this unsafe condition, Fokker Services originally introduced
SBF100-53-101 which was made mandatory through CAA Netherlands (CAA-
NL) AD NL-2005-013 [which corresponds to FAA AD 2008-04-22,
amendment 39-15394] with a compliance time of 12 months after
November 1, 2005.
Following this, new reports of problems due to freezing moisture
in the same area have been received. This has prompted Fokker
Services to publish SBF100-53-107, which introduces an additional
one-time inspection [for deviations] of the aerodynamic seals of the
Wing-to-Fuselage Fairings and the application of an improved sealing
of the aerodynamic seal by means of a fillet seam between the upper
left and right fairings and the fuselage skin.
For the reasons described above, this EASA AD supersedes CAA-NL
AD NL-2005-013 and requires an additional one-time inspection [for
deviations] and application of improved sealing.
This action retains the inspection in AD 2008-04-22. Doing the
additional inspection terminates the requirement to do the inspection
required by the existing AD. The additional inspection for deviations
includes inspecting for fit between the left-hand and right-hand wing-
to-fuselage fairings and the fuselage skin; inspecting for damage to
the aerodynamic seal on the fairings; inspecting for fit of the
aerodynamic seal to the fuselage; and related investigative and
corrective actions if necessary. The related investigative actions
include inspecting the aerodynamic seal for damage (including wear);
inspecting the abrasion resistant coating for damage (including wear);
and re-inspecting for fit. The corrective actions include installing a
new seal, restoring the protective coating, correcting the position of
the fairing, and sealing the gaps between the fairings and the
surrounding structure. You may obtain further information by examining
the MCAI in the AD docket.
Relevant Service Information
Fokker Services B.V. has issued Fokker Service Bulletin SBF100-53-
107, dated February 26, 2008. 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 7 products of U.S. registry. We also estimate that
it would take about 3 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 $1,680, or $240 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 removing Amendment 39-15394 (73 FR
10650, February 28, 2008) and adding the following new AD:
Fokker Services B.V.: Docket No. FAA-2008-1119; Directorate
Identifier 2008-NM-112-AD.
Comments Due Date
(a) We must receive comments by December 1, 2008.
Affected ADs
(b) The proposed AD supersedes AD 2008-04-22, Amendment 39-
15394.
[[Page 64573]]
Applicability
(c) This AD applies to Fokker F.28 Mark 0070 and 0100 airplanes,
certificated in any category.
Subject
(d) Air Transport Association (ATA) of America Code 53:
Fuselage.
Reason
(e) The mandatory continuing airworthiness information (MCAI)
states:
Several reports have been received about roll control problems
due to frozen moisture on the aileron pulleys that are located in
the LH [left-hand] and RH [right-hand] Main Landing Gear (MLG) wheel
bays on the centre wing rear spar, under the wing to fuselage
fairings. Investigation revealed that improper sealing of the
aerodynamic seals of the Wing-to-Fuselage Fairings can cause rain-or
washwater and de-icing fluids to leak onto the affected aileron
pulleys. Exposure of the aileron pulleys to the leaked moisture in
freezing condition can result in restricted aileron control movement
(partly jammed) and/or higher control forces. This condition, if not
corrected, could lead to partial loss of control of the aircraft. To
address this unsafe condition, Fokker Services originally introduced
SBF100-53-101 which was made mandatory through CAA Netherlands (CAA-
NL) AD NL-2005-013 [which corresponds to FAA AD 2008-04-22] with a
compliance time of 12 months after November 1, 2005.
Following this, new reports of problems due to freezing moisture
in the same area have been received. This has prompted Fokker
Services to publish SBF100-53-107, which introduces an additional
one-time inspection [for deviations] of the aerodynamic seals of the
Wing-to-Fuselage Fairings and the application of an improved sealing
of the aerodynamic seal by means of a fillet seam between the upper
left and right fairings and the fuselage skin.
For the reasons described above, this EASA AD supersedes CAA-NL
AD NL-2005-013 and requires an additional one-time inspection [for
deviations] and application of improved sealing.
This action retains the inspection in AD 2008-04-22. Doing the
additional inspection terminates the requirement to do the
inspection required by the existing AD. The additional inspection
for deviations includes inspecting for fit between the left-hand and
right-hand wing-to-fuselage fairings and the fuselage skin;
inspecting for damage to the aerodynamic seal on the fairings;
inspecting for fit of the aerodynamic seal to the fuselage; and
related investigative and corrective actions if necessary. The
related investigative actions include inspecting the aerodynamic
seal for damage (including wear); inspecting the abrasion resistant
coating for damage (including wear); and re-inspecting for fit. The
corrective actions include installing a new seal, restoring the
protective coating, correcting the position of the fairing, and
sealing the gaps between the fairings and the surrounding structure.
Restatement of Certain Requirements of AD 2008-04-22
(f) Unless already done: Within 12 months after April 3, 2008
(the effective date of AD 2008-04-22), inspect the wing-to-fuselage
fairings for indications of incorrect fit, damage, or wear, in
accordance with the Accomplishment Instructions of Fokker Service
Bulletin SBF100-53-101, dated September 30, 2005 (``the service
bulletin''). Doing the inspection required by paragraph (g) of this
AD terminates the actions required by this paragraph.
(1) If no indications of incorrect fit, damage, or wear are
found, no further action is required by this paragraph.
(2) If any incorrect fit, damage, or wear is found, before next
flight, do related investigative actions and applicable corrective
actions in accordance with the Accomplishment Instructions of the
service bulletin.
New Requirements of This AD: Actions and Compliance
(g) Unless already done: Within 12 months after the effective
date of this AD, inspect for deviations of the aerodynamic seal of
the wing-to-fuselage fairings and the fuselage skin, do all
applicable related investigative and corrective actions, and apply a
fillet seam between the fairings and the fuselage skin, in
accordance with the Accomplishment Instructions of Fokker Service
Bulletin SBF100-53-107, dated February 26, 2008. Do all applicable
related investigative and corrective actions before further flight.
Accomplishment of this inspection terminates the actions required by
paragraph (f) of this AD.
FAA AD Differences
Note: This AD differs from the MCAI and/or service information
as follows: No differences.
Other FAA AD Provisions
(h) 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, International Branch, ANM-116,
Transport Airplane Directorate, FAA, 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
(i) Refer to MCAI European Aviation Safety Agency Airworthiness
Directive 2008-0079, dated April 24, 2008; Fokker Service Bulletin
SBF100-53-101, dated September 30, 2005; and Fokker Service Bulletin
SBF100-53-107, dated February 26, 2008; for related information.
Issued in Renton, Washington, on October 10, 2008.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E8-25890 Filed 10-29-08; 8:45 am]
BILLING CODE 4910-13-P
