Airworthiness Directives; Cessna Aircraft Company Models 525, 525A, and 525B Airplanes, 60790-60793 [E7-21127]
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60790
Proposed Rules
Federal Register
Vol. 72, No. 207
Friday, October 26, 2007
This section of the FEDERAL REGISTER
contains notices to the public of the proposed
issuance of rules and regulations. The
purpose of these notices is to give interested
persons an opportunity to participate in the
rule making prior to the adoption of the final
rules.
DEPARTMENT OF AGRICULTURE
Animal and Plant Health Inspection
Service
7 CFR Part 319
[Docket No. 03–002–5]
RIN 0579–AC55
Importation of Nursery Stock;
Postentry Quarantine Requirements
for Potential Hosts of Chrysanthemum
White Rust and Definition of From
Animal and Plant Health
Inspection Service, USDA.
ACTION: Proposed rule; reopening of
comment period.
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AGENCY:
SUMMARY: We are reopening the
comment period for our proposed rule
that would amend the regulations on
importing nursery stock by providing a
new option for the postentry quarantine
growing period for articles of
Chrysanthemum spp., Leucanthemella
serotina, and Nipponanthemum
nipponicum and amending the
definition of from. This action will
allow interested persons additional time
to prepare and submit comments.
DATES: We will consider all comments
that we receive on or before November
26, 2007.
ADDRESSES: You may submit comments
by either of the following methods:
• Federal eRulemaking Portal: Go to
https://www.regulations.gov, select
‘‘Animal and Plant Health Inspection
Service’’ from the agency drop-down
menu, then click ‘‘Submit.’’ In the
Docket ID column, select APHIS–2005–
0081 to submit or view public
comments and to view supporting and
related materials available
electronically. Information on using
Regulations.gov, including instructions
for accessing documents, submitting
comments, and viewing the docket after
the close of the comment period, is
available through the site’s ‘‘User Tips’’
link.
• Postal Mail/Commercial Delivery:
Please send four copies of your
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comment (an original and three copies)
to Docket No. 03–002–4, Regulatory
Analysis and Development, PPD,
APHIS, Station 3A–03.8, 4700 River
Road Unit 118, Riverdale, MD 20737–
1238. Please state that your comment
refers to Docket No. 03–002–4.
Reading Room: You may read any
comments that we receive on Docket
No. 03–002–4 in our reading room. The
reading room is located in room 1141 of
the USDA South Building, 14th Street
and Independence Avenue, SW.,
Washington, DC. Normal reading room
hours are 8 a.m. to 4:30 p.m., Monday
through Friday, except holidays. To be
sure someone is there to help you,
please call (202) 690–2817 before
coming.
Other Information: Additional
information about APHIS and its
programs is available on the Internet at
https://www.aphis.usda.gov.
FOR FURTHER INFORMATION CONTACT: Dr.
Arnold T. Tschanz, Senior Import
Specialist, Commodity Import Analysis
and Operations, PPQ, APHIS, 4700
River Road Unit 133, Riverdale, MD
20737–1236; (301) 734–5306.
SUPPLEMENTARY INFORMATION: On August
8, 2007, we published in the Federal
Register (72 FR 44425–44433, Docket
No. 03–002–4) a proposed rule that
would amend the regulations on
importing nursery stock by providing an
option in which the postentry
quarantine growing period for articles of
Chrysanthemum spp., Leucanthemella
serotina, and Nipponanthemum
nipponicum that are imported from
certain locations would be reduced from
6 months to 2 months, provided that the
grower of those plants has implemented
a systems approach to prevent the
imported articles from being infected
with chrysanthemum white rust. The
proposed rule would also amend the
definition of from.
Comments on the proposed rule were
required to be received on or before
October 9, 2007. We are reopening the
comment period on Docket No. 03–002–
4 until November 26, 2007. This action
will allow interested persons additional
time to prepare and submit comments.
We will also consider all comments
received between October 9, 2007, and
the date of this notice.
Authority: 7 U.S.C. 450, 7701–7772, and
7781–7786; 21 U.S.C. 136 and 136a; 7 CFR
2.22, 2.80, and 371.3.
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Done in Washington, DC, this 22nd day of
October 2007.
Kevin Shea,
Acting Administrator, Animal and Plant
Health Inspection Service.
[FR Doc. E7–21136 Filed 10–25–07; 8:45 am]
BILLING CODE 3410–34–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2007–28956; Directorate
Identifier 2007–CE–068–AD]
RIN 2120–AA64
Airworthiness Directives; Cessna
Aircraft Company Models 525, 525A,
and 525B Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
SUMMARY: We propose to adopt a new
airworthiness directive (AD) for certain
Cessna Aircraft Company (Cessna)
Models 525, 525A, and 525B airplanes.
This proposed AD would require you to
inspect the lower wing skin structure,
forward wing spar, lower fuselage skin,
fairings, and the external fairing frames
for corrosion; repair any damage found;
apply a corrosion inhibitive sealant to
the fuselage fairings before reinstalling;
and disable the cockpit mounted pilot
relief tube. This proposed AD results
from leaking of the cockpit mounted
pilot relief tube, which caused corrosion
of the airplane structure. We are
proposing this AD to detect and correct
any damage from corrosion of the
airplane structure. Corrosion of the
airplane structure could cause structural
degradation and lead to structural
failure of the airplane with consequent
loss of control.
DATES: We must receive comments on
this proposed AD by December 26,
2007.
Use one of the following
addresses to comment on this proposed
AD:
• Federal eRulemaking Portal: Go to
https://www.regulations.gov. Follow the
instructions for submitting comments.
• Fax: (202) 493–2251.
ADDRESSES:
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• Mail: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue, SE.,
Washington, DC 20590.
• Hand Delivery: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue, SE.,
Washington, DC 20590, between 9 a.m.
and 5 p.m., Monday through Friday,
except Federal holidays.
For service information identified in
this proposed AD, contact Cessna
Aircraft Company, Citation Marketing
Division, P.O. 7706, Wichita, Kansas
67277; telephone: 1–800–835–4090; fax:
1–800–517–8500.
FOR FURTHER INFORMATION CONTACT: T.N.
Baktha, Aerospace Engineer, 1801
Airport Road, Room 100, Wichita,
Kansas 67209; telephone: (316) 946–
4155; fax: (316) 946–4107.
SUPPLEMENTARY INFORMATION:
www.regulations.gov, including any
personal information you provide. We
will also post a report summarizing each
substantive verbal contact we receive
concerning this proposed AD.
Comments Invited
We invite you to send any written
relevant data, views, or arguments
regarding this proposed AD. Send your
comments to an address listed under the
ADDRESSES section. Include the docket
number, ‘‘FAA–2007–28956; Directorate
Identifier 2007–CE–068–AD’’ at the
beginning of your comments. We
specifically invite comments on the
overall regulatory, economic,
environmental, and energy aspects of
the proposed AD. We will consider all
comments received by the closing date
and may amend the proposed AD in
light of those comments.
We will post all comments we
receive, without change, to https://
We have reviewed the following
Cessna service information for this AD:
• Service Bulletin SB525–53–20,
dated April 30, 2007;
• Service Bulletin SB525A–53–01,
dated April 30, 2007;
• Service Bulletin SB525B–53–01,
dated April 30, 2007;
• Alert Service Letter ASL525–53–04,
Revision 2, dated August 19, 2007;
• Alert Service Letter ASL525A–53–
05, Revision 2, dated July 25, 2007; and
• Alert Service Letter ASL525B–53–
02, Revision 2, dated July 25, 2007.
The service information describes
procedures for the following actions:
• Inspecting the lower wing skin
structure, forward wing spars, lower
Discussion
Cessna reported wing skin corrosion
in a Model 525 and belly skin corrosion
in several Model 525A airplanes. Cessna
received information on more than 18
cases of significant corrosion. Cessna
also received information on 42 cases of
some corrosion on Models 525, 525A,
and 525B airplanes. Corrosive fluids
leaked after use of the cockpit mounted
pilot relief tube and caused corrosion of
the fuselage skins, fairings, fairing
support structure, and wing structure.
This condition, if not corrected, could
result in structural degradation and lead
to structural failure of the airplane with
consequent loss of control.
Relevant Service Information
fuselage skin, fairings, and external
fairing frames for corrosion;
• Repairing corrosion by blending
within specified limits or by contacting
the manufacturer to obtain an FAAapproved repair scheme if corrosion
damage can not be repaired within the
limits specified;
• Doing a surface eddy current
inspection or a dye-penetrant inspection
on the repaired blended areas for cracks,
and contacting the manufacturer to
obtain an FAA-approved repair scheme
if cracks are found;
• Applying a corrosion inhibitive
sealant to the fuselage fairings before
reinstalling; and
• Disabling the cockpit mounted
relief tube.
FAA’s Determination and Requirements
of the Proposed AD
We are proposing this AD because we
evaluated all information and
determined the unsafe condition
described previously is likely to exist or
develop on other products of the same
type design. This proposed AD would
require you to inspect the lower wing
skin structure, forward wing spar, lower
fuselage skin, fairings, and the external
fairing frames for corrosion; repair any
damage found; apply a corrosion
inhibitive sealant to the fuselage fairings
before reinstalling; and disable the
cockpit mounted pilot relief tube.
Costs of Compliance
We estimate that this proposed AD
would affect 261 airplanes in the U.S.
registry.
We estimate the following costs to do
the proposed inspection:
Total cost per
airplane
Labor cost
Parts cost
80 work-hours × $80 per hour = $6,400 ...................................................
Not Applicable .................................
We have no way of determining the
number of airplanes that may need
repair or further inspection based on the
results of the proposed inspection, or
the costs associated with such repair or
inspection.
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.5 work-hours × $80 per hour = $40 .........................................................
Not Applicable .................................
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Authority for This Rulemaking
Title 49 of the United States Code
specifies the FAA’s authority to issue
rules on aviation safety. Subtitle I,
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$1,670,400
Total cost per
airplane
Parts cost
ASL525A–53–05, Revision 2, dated July
25, 2007; and Alert Service Letter
ASL525B–53–02, Revision 2, dated July
25, 2007.
$6,400
We estimate the following costs to do
the proposed disabling of the cockpit
mounted pilot relief tube:
Labor cost
Cessna will provide warranty credit to
the extent specified in Cessna Citation
Service Bulletin SB525–53–20, dated
April 30, 2007; Service Bulletin
SB525A–53–01, dated April 30, 2007;
Service Bulletin SB525B–53–01, dated
April 30, 2007; Alert Service Letter
ASL525–53–04, Revision 2, dated
August 19, 2007; Alert Service Letter
Total cost on
U.S. operators
Total cost on
U.S. operators
$40
$10,440
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
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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 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 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.
Examining the AD Docket
You may examine the AD docket that
contains the proposed AD, the
regulatory evaluation, any comments
received, and other information on the
Internet at https://www.regulations.gov;
or in person at the Docket Management
Facility between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal
holidays. The Docket Office (telephone
(800) 647–5527) is located at the street
address stated in the ADDRESSES section.
Comments will be available in the AD
docket shortly after receipt.
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
Cessna Aircraft Company: Docket No. FAA–
2007–28956; Directorate Identifier 2007–
CE–068–AD.
Comments Due Date
(a) We must receive comments on this
airworthiness directive (AD) action by
December 26, 2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to the following
airplane models and serial numbers that have
a cockpit mounted pilot relief tube installed
and are certificated in any category:
Models
Serial Nos.
(1) 525 ......................
(2) 525A ....................
(3) 525B ....................
0001 through 0637.
0001 through 0347.
0001 through 0152.
Unsafe Condition
(d) This AD results from leaking of the
pilot relief tube, which caused corrosion of
the airplane structure. We are issuing this AD
to detect and correct any damage from
corrosion on the airplane structure. Corrosion
of the airplane structure could cause
structural degradation and lead to structural
failure of the airplane with consequent loss
of control.
Compliance
[Amended]
2. The FAA amends § 39.13 by adding
the following new AD:
(e) To address this problem, you must do
the following, unless already done:
Compliance
Procedures
(1) Inspect the lower wing skin structure, forward wing spars, lower fuselage skin, fairings, and external fairing frames for corrosion.
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Actions
Within the next 90 days after the effective
date of this AD.
(2) If corrosion damage is found in the lower
wing skin structure, forward wing spars,
lower fuselage skin, fairings, and external
fairing frames during the inspection required
in paragraph (e)(1) of this AD, repair as
specified in the applicable service information. If the corrosion damage can not be repaired within the limits specified in the applicable service information, contact the manufacturer at 1–800–835–4090 for an FAA-approved repair scheme and incorporate this
repair.
(3) If corrosion on the lower wing skin structure, forward wing spars, and lower fuselage
skin was repaired by blending within the limits specified in the service information, do a
surface eddy current inspection or a dyepenetrant inspection for cracks.
(4) If cracks are found during the surface eddy
current inspection or the dye-penetrant inspection required in paragraph (e)(3) of this
AD, contact the manufacturer for an FAA-approved repair scheme and incorporate this
repair.
Before further flight after the inspection required in paragraph (e)(1) of this AD.
Follow Cessna Citation Alert Service Letter
ASL525–53–04, Revision 2, dated August
19, 2007; Alert Service Letter ASL525A–
53–05, Revision 2, dated July 25, 2007; or
Alert Service Letter ASL525B–53–02, Revision 2, dated July 25, 2007.
Follow Cessna Citation Alert Service Letter
ASL525–53–04, Revision 2, dated August
19, 2007; Alert Service Letter ASL525A–
53–05, Revision 2, dated July 25, 2007; or
Alert Service Letter ASL525B–53–02, Revision 2, dated July 25, 2007.
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Before further flight after the repair by blending was done as specified in paragraph
(e)(2) of this AD.
Before further flight after the inspection required in paragraph (e)(3) of this AD.
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Follow Cessna Citation Alert Service Letter
ASL525–53–04, Revision 2, dated August
19, 2007; Alert Service Letter ASL525A–
53–05, Revision 2, dated July 25, 2007; or
Alert Service Letter ASL525B–53–02, Revision 2, dated July 25, 2007.
Contact Cessna Aircraft Company, Citation
Customer Support at 1–800–835–4090.
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60793
Actions
Compliance
Procedures
(5) Install the fuselage fairings and apply corrosion inhibitive sealant.
Before further flight after the inspection required in paragraph (e)(1) of this AD if no
corrosion was found; or before further flight
after doing the repairs and inspections required in paragraphs (e)(2), (e)(3), and
(e)(4) of this AD if corrosion or cracks were
found.
Within the next 90 days after the effective
date of this AD.
Follow Cessna Citation Alert Service Letter
ASL525–53–04, Revision 2, dated August
19, 2007; Alert Service Letter ASL525A–
53–05, Revision 2, dated July 25, 2007; or
Alert Service Letter ASL525B–53–02, Revision 2, dated July 25, 2007.
SUMMARY: The EPA is proposing to
approve, as part of the Michigan State
Implementation Plan (SIP), Michigan’s
June 29, 2007, request to revise
recordkeeping and reporting
requirements for abnormal conditions,
start-up, shutdown, and malfunction of
a source, process, or process equipment.
The revised rule contains more specific
and complete recordkeeping and
reporting requirements than are
currently approved into the SIP.
DATES: Comments must be received on
or before November 26, 2007.
ADDRESSES: Submit your comments,
identified by Docket ID No. EPA–R05–
OAR–2007–0631, by one of the
following methods:
1. https://www.regulations.gov: Follow
the on line instructions for submitting
comments.
2. E-mail: mooney.john@epa.gov.
3. Fax: (312) 886–5824.
4. Mail: John M. Mooney, Chief,
Criteria Pollutant Section, Air Programs
Branch (AR 18J), U.S. Environmental
Protection Agency, 77 West Jackson
Boulevard, Chicago, Illinois 60604.
5. Hand Delivery: John M. Mooney,
Chief, Criteria Pollutant Section, Air
Programs Branch (AR 18J), U.S.
Environmental Protection Agency, 77
West Jackson Boulevard, Chicago,
Illinois 60604. Such deliveries are only
accepted during the Regional Office
normal hours of operation, and special
arrangements should be made for
deliveries of boxed information. The
Regional Office official hours of
business are Monday through Friday,
8:30 a.m. to 4:30 p.m. excluding Federal
holidays.
Please see the direct final rule which
is located in the Rules section of this
Federal Register for detailed
instructions on how to submit
comments.
FOR FURTHER INFORMATION CONTACT:
Kathleen D’Agostino, Environmental
Engineer, Criteria Pollutant Section, Air
Programs Branch (AR–18J), U.S.
Environmental Protection Agency,
Region 5, 77 West Jackson Boulevard,
Chicago, Illinois 60604, (312) 886–1767,
dagostino.kathleen@epa.gov.
SUPPLEMENTARY INFORMATION: In the
Final Rules section of this Federal
Register, EPA is approving the State’s
SIP submittal as a direct final rule
without prior proposal because the
Agency views this as a noncontroversial
submittal and anticipates no adverse
comments. A detailed rationale for the
approval is set forth in the direct final
rule. If no adverse comments are
received in response to this rule, no
further activity is contemplated. If EPA
receives adverse comments, the direct
final rule will be withdrawn and all
public comments received will be
addressed in a subsequent final rule
based on this proposed rule. EPA will
not institute a second comment period.
Any parties interested in commenting
on this action should do so at this time.
Please note that if EPA receives adverse
comment on an amendment, paragraph,
or section of this rule and if that
provision may be severed from the
remainder of the rule, EPA may adopt
as final those provisions of the rule that
are not the subject of an adverse
comment. For additional information,
see the direct final rule which is located
in the Rules section of this Federal
Register.
(6) Determine the type of installation of the
cockpit mounted pilot relief tube and disable
the relief tube.
Alternative Methods of Compliance
(AMOCs)
(f) The Manager, Wichita Aircraft
Certification Office (ACO), FAA, has the
authority to approve AMOCs for this AD, if
requested using the procedures found in 14
CFR 39.19. Send information to ATTN: T.N.
Baktha, Wichita ACO, Aerospace Engineer,
1801 Airport Road, Room 100, Wichita,
Kansas 67209; telephone: (316) 946–4155;
fax: (316) 946–4107. 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.
Related Information
(g) To get copies of the service information
referenced in this AD, contact Cessna Aircraft
Company, Citation Marketing Division, P.O.
7706, Wichita, Kansas 67277; telephone: 1–
800–835–4090; fax: 1–800–517–8500. To
view the AD docket, go to U.S. Department
of Transportation, Docket Operations, M–30,
West Building Ground Floor, Room W12–
140, 1200 New Jersey Avenue, SE.,
Washington, DC 20590, or on the Internet at
https://www.regulations.gov. The docket
number is Docket No. FAA–2007–28956;
Directorate Identifier 2007–CE–068–AD.
Issued in Kansas City, Missouri, on
October 22, 2007.
James E. Jackson,
Acting Manager, Small Airplane Directorate,
Aircraft Certification Service.
[FR Doc. E7–21127 Filed 10–25–07; 8:45 am]
BILLING CODE 4910–13–P
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 52
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[EPA–R05–OAR–2007–0631; FRL–8486–5]
Approval and Promulgation of
Implementation Plans; Michigan;
Recordkeeping and Reporting
Requirements for Abnormal
Conditions
Environmental Protection
Agency (EPA).
ACTION: Proposed rule.
AGENCY:
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Cessna Citation Service Bulletin SB525–53–
20, dated April 30, 2007; Service Bulletin
SB525A–53–01, dated April 30, 2007; or
Service Bulletin SB525B–53–01, dated April
30, 2007.
Dated: October 10, 2007.
Walter W. Kovalick, Jr.,
Acting Regional Administrator, Region 5.
[FR Doc. E7–20944 Filed 10–25–07; 8:45 am]
BILLING CODE 6560–50–P
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 52
[EPA–R05–OAR–2007–0192; FRL–8486–7]
Approval and Promulgation of Air
Quality Implementation Plans;
Michigan; Consumer Products Rule
Environmental Protection
Agency (EPA).
AGENCY:
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]]>Agencies
[Federal Register Volume 72, Number 207 (Friday, October 26, 2007)]
[Proposed Rules]
[Pages 60790-60793]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E7-21127]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2007-28956; Directorate Identifier 2007-CE-068-AD]
RIN 2120-AA64
Airworthiness Directives; Cessna Aircraft Company Models 525,
525A, and 525B Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: We propose to adopt a new airworthiness directive (AD) for
certain Cessna Aircraft Company (Cessna) Models 525, 525A, and 525B
airplanes. This proposed AD would require you to inspect the lower wing
skin structure, forward wing spar, lower fuselage skin, fairings, and
the external fairing frames for corrosion; repair any damage found;
apply a corrosion inhibitive sealant to the fuselage fairings before
reinstalling; and disable the cockpit mounted pilot relief tube. This
proposed AD results from leaking of the cockpit mounted pilot relief
tube, which caused corrosion of the airplane structure. We are
proposing this AD to detect and correct any damage from corrosion of
the airplane structure. Corrosion of the airplane structure could cause
structural degradation and lead to structural failure of the airplane
with consequent loss of control.
DATES: We must receive comments on this proposed AD by December 26,
2007.
ADDRESSES: Use one of the following addresses to comment on this
proposed AD:
Federal eRulemaking Portal: Go to https://
www.regulations.gov. Follow the instructions for submitting comments.
Fax: (202) 493-2251.
[[Page 60791]]
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590.
Hand Delivery: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays.
For service information identified in this proposed AD, contact
Cessna Aircraft Company, Citation Marketing Division, P.O. 7706,
Wichita, Kansas 67277; telephone: 1-800-835-4090; fax: 1-800-517-8500.
FOR FURTHER INFORMATION CONTACT: T.N. Baktha, Aerospace Engineer, 1801
Airport Road, Room 100, Wichita, Kansas 67209; telephone: (316) 946-
4155; fax: (316) 946-4107.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments regarding this proposed AD. Send your comments to an address
listed under the ADDRESSES section. Include the docket number, ``FAA-
2007-28956; Directorate Identifier 2007-CE-068-AD'' at the beginning of
your comments. We specifically invite comments on the overall
regulatory, economic, environmental, and energy aspects of the proposed
AD. We will consider all comments received by the closing date and may
amend the proposed AD in light of those comments.
We will post all comments we receive, without change, to https://
www.regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive concerning this proposed AD.
Discussion
Cessna reported wing skin corrosion in a Model 525 and belly skin
corrosion in several Model 525A airplanes. Cessna received information
on more than 18 cases of significant corrosion. Cessna also received
information on 42 cases of some corrosion on Models 525, 525A, and 525B
airplanes. Corrosive fluids leaked after use of the cockpit mounted
pilot relief tube and caused corrosion of the fuselage skins, fairings,
fairing support structure, and wing structure.
This condition, if not corrected, could result in structural
degradation and lead to structural failure of the airplane with
consequent loss of control.
Relevant Service Information
We have reviewed the following Cessna service information for this
AD:
Service Bulletin SB525-53-20, dated April 30, 2007;
Service Bulletin SB525A-53-01, dated April 30, 2007;
Service Bulletin SB525B-53-01, dated April 30, 2007;
Alert Service Letter ASL525-53-04, Revision 2, dated
August 19, 2007;
Alert Service Letter ASL525A-53-05, Revision 2, dated July
25, 2007; and
Alert Service Letter ASL525B-53-02, Revision 2, dated July
25, 2007.
The service information describes procedures for the following
actions:
Inspecting the lower wing skin structure, forward wing
spars, lower fuselage skin, fairings, and external fairing frames for
corrosion;
Repairing corrosion by blending within specified limits or
by contacting the manufacturer to obtain an FAA-approved repair scheme
if corrosion damage can not be repaired within the limits specified;
Doing a surface eddy current inspection or a dye-penetrant
inspection on the repaired blended areas for cracks, and contacting the
manufacturer to obtain an FAA-approved repair scheme if cracks are
found;
Applying a corrosion inhibitive sealant to the fuselage
fairings before reinstalling; and
Disabling the cockpit mounted relief tube.
FAA's Determination and Requirements of the Proposed AD
We are proposing this AD because we evaluated all information and
determined the unsafe condition described previously is likely to exist
or develop on other products of the same type design. This proposed AD
would require you to inspect the lower wing skin structure, forward
wing spar, lower fuselage skin, fairings, and the external fairing
frames for corrosion; repair any damage found; apply a corrosion
inhibitive sealant to the fuselage fairings before reinstalling; and
disable the cockpit mounted pilot relief tube.
Costs of Compliance
We estimate that this proposed AD would affect 261 airplanes in the
U.S. registry.
We estimate the following costs to do the proposed inspection:
----------------------------------------------------------------------------------------------------------------
Total cost per Total cost on
Labor cost Parts cost airplane U.S. operators
----------------------------------------------------------------------------------------------------------------
80 work-hours x $80 per hour = $6,400......... Not Applicable.................. $6,400 $1,670,400
----------------------------------------------------------------------------------------------------------------
We have no way of determining the number of airplanes that may need
repair or further inspection based on the results of the proposed
inspection, or the costs associated with such repair or inspection.
We estimate the following costs to do the proposed disabling of the
cockpit mounted pilot relief tube:
----------------------------------------------------------------------------------------------------------------
Total cost per Total cost on
Labor cost Parts cost airplane U.S. operators
----------------------------------------------------------------------------------------------------------------
.5 work-hours x $80 per hour = $40............ Not Applicable.................. $40 $10,440
----------------------------------------------------------------------------------------------------------------
Cessna will provide warranty credit to the extent specified in
Cessna Citation Service Bulletin SB525-53-20, dated April 30, 2007;
Service Bulletin SB525A-53-01, dated April 30, 2007; Service Bulletin
SB525B-53-01, dated April 30, 2007; Alert Service Letter ASL525-53-04,
Revision 2, dated August 19, 2007; Alert Service Letter ASL525A-53-05,
Revision 2, dated July 25, 2007; and Alert Service Letter ASL525B-53-
02, Revision 2, dated July 25, 2007.
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
[[Page 60792]]
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 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
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.
Examining the AD Docket
You may examine the AD docket that contains the proposed AD, the
regulatory evaluation, any comments received, and other information on
the Internet at https://www.regulations.gov; or in person at the Docket
Management Facility between 9 a.m. and 5 p.m., Monday through Friday,
except Federal holidays. The Docket Office (telephone (800) 647-5527)
is located at the street address stated in the ADDRESSES section.
Comments will be available in the AD docket shortly after receipt.
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:
Cessna Aircraft Company: Docket No. FAA-2007-28956; Directorate
Identifier 2007-CE-068-AD.
Comments Due Date
(a) We must receive comments on this airworthiness directive
(AD) action by December 26, 2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to the following airplane models and serial
numbers that have a cockpit mounted pilot relief tube installed and
are certificated in any category:
------------------------------------------------------------------------
Models Serial Nos.
------------------------------------------------------------------------
(1) 525............................. 0001 through 0637.
(2) 525A............................ 0001 through 0347.
(3) 525B............................ 0001 through 0152.
------------------------------------------------------------------------
Unsafe Condition
(d) This AD results from leaking of the pilot relief tube, which
caused corrosion of the airplane structure. We are issuing this AD
to detect and correct any damage from corrosion on the airplane
structure. Corrosion of the airplane structure could cause
structural degradation and lead to structural failure of the
airplane with consequent loss of control.
Compliance
(e) To address this problem, you must do the following, unless
already done:
------------------------------------------------------------------------
Actions Compliance Procedures
------------------------------------------------------------------------
(1) Inspect the lower wing skin Within the next 90 Follow Cessna
structure, forward wing spars, days after the Citation Alert
lower fuselage skin, fairings, effective date of Service Letter
and external fairing frames for this AD. ASL525-53-04,
corrosion. Revision 2, dated
August 19, 2007;
Alert Service
Letter ASL525A-53-
05, Revision 2,
dated July 25,
2007; or Alert
Service Letter
ASL525B-53-02,
Revision 2, dated
July 25, 2007.
(2) If corrosion damage is found Before further Follow Cessna
in the lower wing skin flight after the Citation Alert
structure, forward wing spars, inspection Service Letter
lower fuselage skin, fairings, required in ASL525-53-04,
and external fairing frames paragraph (e)(1) Revision 2, dated
during the inspection required of this AD. August 19, 2007;
in paragraph (e)(1) of this AD, Alert Service
repair as specified in the Letter ASL525A-53-
applicable service information. 05, Revision 2,
If the corrosion damage can not dated July 25,
be repaired within the limits 2007; or Alert
specified in the applicable Service Letter
service information, contact ASL525B-53-02,
the manufacturer at 1-800-835- Revision 2, dated
4090 for an FAA-approved repair July 25, 2007.
scheme and incorporate this
repair.
(3) If corrosion on the lower Before further Follow Cessna
wing skin structure, forward flight after the Citation Alert
wing spars, and lower fuselage repair by Service Letter
skin was repaired by blending blending was done ASL525-53-04,
within the limits specified in as specified in Revision 2, dated
the service information, do a paragraph (e)(2) August 19, 2007;
surface eddy current inspection of this AD. Alert Service
or a dye-penetrant inspection Letter ASL525A-53-
for cracks. 05, Revision 2,
dated July 25,
2007; or Alert
Service Letter
ASL525B-53-02,
Revision 2, dated
July 25, 2007.
(4) If cracks are found during Before further Contact Cessna
the surface eddy current flight after the Aircraft Company,
inspection or the dye-penetrant inspection Citation Customer
inspection required in required in Support at 1-800-
paragraph (e)(3) of this AD, paragraph (e)(3) 835-4090.
contact the manufacturer for an of this AD.
FAA-approved repair scheme and
incorporate this repair.
[[Page 60793]]
(5) Install the fuselage Before further Follow Cessna
fairings and apply corrosion flight after the Citation Alert
inhibitive sealant. inspection Service Letter
required in ASL525-53-04,
paragraph (e)(1) Revision 2, dated
of this AD if no August 19, 2007;
corrosion was Alert Service
found; or before Letter ASL525A-53-
further flight 05, Revision 2,
after doing the dated July 25,
repairs and 2007; or Alert
inspections Service Letter
required in ASL525B-53-02,
paragraphs Revision 2, dated
(e)(2), (e)(3), July 25, 2007.
and (e)(4) of
this AD if
corrosion or
cracks were found.
(6) Determine the type of Within the next 90 Cessna Citation
installation of the cockpit days after the Service Bulletin
mounted pilot relief tube and effective date of SB525-53-20,
disable the relief tube. this AD. dated April 30,
2007; Service
Bulletin SB525A-
53-01, dated
April 30, 2007;
or Service
Bulletin SB525B-
53-01, dated
April 30, 2007.
------------------------------------------------------------------------
Alternative Methods of Compliance (AMOCs)
(f) The Manager, Wichita Aircraft Certification Office (ACO),
FAA, has the authority to approve AMOCs for this AD, if requested
using the procedures found in 14 CFR 39.19. Send information to
ATTN: T.N. Baktha, Wichita ACO, Aerospace Engineer, 1801 Airport
Road, Room 100, Wichita, Kansas 67209; telephone: (316) 946-4155;
fax: (316) 946-4107. 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.
Related Information
(g) To get copies of the service information referenced in this
AD, contact Cessna Aircraft Company, Citation Marketing Division,
P.O. 7706, Wichita, Kansas 67277; telephone: 1-800-835-4090; fax: 1-
800-517-8500. To view the AD docket, go to U.S. Department of
Transportation, Docket Operations, M-30, West Building Ground Floor,
Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590, or
on the Internet at https://www.regulations.gov. The docket number is
Docket No. FAA-2007-28956; Directorate Identifier 2007-CE-068-AD.
Issued in Kansas City, Missouri, on October 22, 2007.
James E. Jackson,
Acting Manager, Small Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E7-21127 Filed 10-25-07; 8:45 am]
BILLING CODE 4910-13-P
