Airworthiness Directives; Cessna Aircraft Company Model 525 Airplanes, 13486-13488 [E8-5005]
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13486
Federal Register / Vol. 73, No. 50 / Thursday, March 13, 2008 / Proposed Rules
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2008–0306; Directorate
Identifier 2008–CE–014–AD]
RIN 2120–AA64
Airworthiness Directives; Cessna
Aircraft Company Model 525 Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
rwilkins on PROD1PC63 with PROPOSALS
SUMMARY: We propose to adopt a new
airworthiness directive (AD) for certain
Cessna Aircraft Company (Cessna)
Model 525 airplanes. This proposed AD
would require you to inspect for missing
firewall sealant between the aft firewall
assembly and seal assembly; and, if you
find that firewall sealant is missing, seal
with firewall sealant between the aft
firewall assembly and seal assembly.
This proposed AD results from a report
that firewall sealant may not have been
applied between the aft firewall
assembly and seal assembly during
manufacture of certain Model 525
airplanes. We are proposing this AD to
detect and correct missing firewall
sealant between the aft firewall
assembly and seal assembly, which
could result in failure of the fire
extinguishing system to prevent the
spread of fire through the firewall gap.
This failure could lead to an
uncontrolled fire.
DATES: We must receive comments on
this proposed AD by May 12, 2008.
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.
• 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–
VerDate Aug<31>2005
18:03 Mar 12, 2008
Jkt 214001
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, Product Support,
P.O. Box 7706, Wichita, Kansas 67277;
telephone: (316) 517–5800; fax: (316)
942–9006.
FOR FURTHER INFORMATION CONTACT:
James Galstad, Aerospace Engineer,
Wichita Aircraft Certification Office,
1801 Airport Road, Room 100, Wichita,
Kansas 67209; telephone: (316) 946–
4135; 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–2008–0306; Directorate
Identifier 2008–CE–014–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
We have received a report that
firewall sealant may not have been
applied between the aft firewall
assembly and seal assembly during
manufacture of Model 525 airplanes,
serial numbers 525–0600 through 525–
0662.
A nacelle fire may pass through the
gap where the firewall sealant is
missing. Although the fire detection
system and fire extinguishing system
remain operational, the effectiveness of
the fire extinguishing system has not
been shown to prevent the spread of fire
through the firewall gap. The fire could
PO 00000
Frm 00022
Fmt 4702
Sfmt 4702
pass through the gap in the firewall or
the effectiveness of the fire
extinguishing system be defeated by the
gap.
This condition, if not corrected, could
result in an uncontrolled fire.
Relevant Service Information
We have reviewed Cessna Aircraft
Company Citation Service Letter SL525–
71–05, Revision 1, dated February 6,
2008. The service information describes
procedures for:
• Inspecting for missing firewall
sealant between the aft firewall
assembly and seal assembly; and
• Sealing with firewall sealant
between the aft firewall assembly and
seal assembly.
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 for missing
firewall sealant between the aft firewall
assembly and seal assembly; and, if you
find that firewall sealant is missing, seal
with firewall sealant between the aft
firewall assembly and seal assembly.
Differences Between This Proposed AD
and the Service Information
The service information requires
compliance within 600 hours time-inservice (TIS) or 1 year after the date of
receipt, whichever occurs first. Due to
the severity of the safety issue
(uncontrolled fire), this proposed AD
has a compliance of within the next 60
hours TIS after the effective date of this
AD or 60 days after the effective date of
this AD, whichever occurs first. The
requirements of this proposed AD, if
adopted as a final rule, would take
precedence over the provisions in the
service information.
Costs of Compliance
We estimate that this proposed AD
would affect 45 airplanes in the U.S.
registry.
We estimate the following costs to do
the proposed inspection:
E:\FR\FM\13MRP1.SGM
13MRP1
13487
Federal Register / Vol. 73, No. 50 / Thursday, March 13, 2008 / Proposed Rules
Labor cost
Parts cost
Total cost per
airplane
Total cost on
U.S. operators
1 work-hour × $80 per hour = $80 ...................................................................................
Not Applicable ..........
$80
$3,600
We estimate the following costs to do
any necessary repairs that would be
required based on the results of the
proposed inspection. We have no way of
determining the number of airplanes
that may need this repair:
Labor cost
Parts cost
Total cost per
airplane
4 work-hours × $80 per hour = $320 ......................................................................................................................
$30
$350
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 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
[Amended]
2. The FAA amends § 39.13 by adding
the following new AD:
Cessna Aircraft Company: Docket No. FAA–
2008–0306; Directorate Identifier 2008–
CE–014–AD.
Comments Due Date
(a) We must receive comments on this
airworthiness directive (AD) action by May
12, 2008.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Model 525 airplanes,
serial numbers 525–0600 through 525–0662,
that are certificated in any category.
Unsafe Condition
(d) This AD results from a report that
firewall sealant may not have been applied
between the aft firewall assembly and seal
assembly during manufacture of certain
Model 525 airplanes. We are issuing this AD
to detect and correct missing firewall sealant
between the aft firewall assembly and seal
assembly, which could result in failure of the
fire extinguishing system to prevent the
spread of fire through the firewall gap. This
failure could lead to an uncontrolled fire.
Compliance
(e) To address this problem, you must do
the following, unless already done:
Compliance
Procedures
(1) Inspect between the 6352225 aft firewall assembly and 6352226 seal assembly for missing firewall sealant.
rwilkins on PROD1PC63 with PROPOSALS
Actions
Within the next 60 hours time-in-service (TIS)
after the effective date of this AD or within
60 days after the effective date of this AD,
whichever occurs first.
Before further flight after the inspection required by paragraph (e)(1) of this AD.
Follow Cessna Aircraft Company Citation
Service Letter SL525–71–05, Revision 1,
dated February 6, 2008.
(2) If, as a result of the inspection required by
paragraph (e)(1) of this AD, you find there is
missing firewall sealant between the 6352225
aft firewall assembly and 6352226 seal assembly, seal with U000117S firewall sealant
in the gap between the 6352225 aft firewall
assembly and 6352226 seal assembly.
VerDate Aug<31>2005
16:23 Mar 12, 2008
Jkt 214001
PO 00000
Frm 00023
Fmt 4702
Sfmt 4702
Follow Cessna Aircraft Company Citation
Service Letter SL525–71–05, Revision 1,
dated February 6, 2008.
E:\FR\FM\13MRP1.SGM
13MRP1
13488
Federal Register / Vol. 73, No. 50 / Thursday, March 13, 2008 / Proposed Rules
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: James
Galstad, Aerospace Engineer, Wichita ACO,
1801 Airport Road, Room 100, Wichita,
Kansas 67209; telephone: (316) 946–4135;
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, Product Support, P.O. Box 7706,
Wichita, Kansas 67277; telephone: (316) 517–
5800; fax: (316) 942–9006. 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.
Issued in Kansas City, Missouri, on March
7, 2008.
Kim Smith,
Manager, Small Airplane Directorate, Aircraft
Certification Service.
[FR Doc. E8–5005 Filed 3–12–08; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2008–0294; Directorate
Identifier 2007–NM–288–AD]
RIN 2120–AA64
Airworthiness Directives; Dassault
Model Falcon 2000EX Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
We propose to adopt a new
airworthiness directive (AD) for the
products listed above. This proposed
AD results from mandatory continuing
airworthiness information (MCAI)
originated by an aviation authority of
another country to identify and correct
an unsafe condition on an aviation
product. The MCAI describes the unsafe
condition as:
rwilkins on PROD1PC63 with PROPOSALS
SUMMARY:
Analyses of in-service reports revealed that
in case of failure of the wings anti-ice valve,
indications of untimely anti-icing with the
wings anti-ice selector on ‘‘OFF’’ or of
insufficient anti-icing with the wings anti-ice
selector on ‘‘AUTO’’ might not be properly
VerDate Aug<31>2005
16:23 Mar 12, 2008
Jkt 214001
displayed to the flight crew. It may result, on
ground, in potential structural damages due
to a leading edge overheat, or in-flight, in an
insufficient anti-ice power.
*
*
*
*
*
The proposed AD would require actions
that are intended to address the unsafe
condition described in the MCAI.
DATES: We must receive comments on
this proposed AD by April 14, 2008.
ADDRESSES: You may send comments by
any of the following methods:
• Federal eRulemaking Portal: Go to
https://www.regulations.gov. Follow the
instructions for submitting comments.
• Fax: (202) 493–2251.
• Mail: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue, SE.,
Washington, DC 20590.
• Hand Delivery: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–40, 1200 New Jersey Avenue, SE.,
Washington, DC, between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays.
Examining the AD Docket
You may examine the AD docket on
the Internet at https://
www.regulations.gov; or in person at the
Docket Operations office between 9 a.m.
and 5 p.m., Monday through Friday,
except Federal holidays. The AD docket
contains this proposed AD, the
regulatory evaluation, any comments
received, and other information. The
street address for the Docket Operations
office (telephone (800) 647–5527) is in
the ADDRESSES section. Comments will
be available in the AD docket shortly
after receipt.
FOR FURTHER INFORMATION CONTACT: 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:
We will post all comments we
receive, without change, to https://
www.regulations.gov, including any
personal information you provide. We
will also post a report summarizing each
substantive verbal contact we receive
about this proposed AD.
Discussion
The European Aviation Safety Agency
(EASA), which is the Technical Agent
for the Member States of the European
Community, has issued EASA
Airworthiness Directive 2007–0137,
dated May 16, 2007 (referred to after
this as ‘‘the MCAI’’), to correct an unsafe
condition for the specified products.
The MCAI states:
Analyses of in-service reports revealed that
in case of failure of the wings anti-ice valve,
indications of untimely anti-icing with the
wings anti-ice selector on ‘‘OFF’’ or of
insufficient anti-icing with the wings anti-ice
selector on ‘‘AUTO’’ might not be properly
displayed to the flight crew. It may result, on
ground, in potential structural damages due
to a leading edge overheat, or in-flight, in an
insufficient anti-ice power.
This Airworthiness Directive (AD)
mandates an upgrade of the wings anti-ice
monitoring circuitry per implementation of
modifications M2814 (Service Bulletin (SB)
F2000EX–116) and M2949 (SB F2000EX–
140) to cover the whole monitoring logic of
the wings anti-ice system.
The modifications include adding a
relay between the bleed air computer
and the wing anti-ice valve; modifying
the aircraft wiring; and rerouting an
existing wire between the right- and lefthand electrical cabinets. You may
obtain further information by examining
the MCAI in the AD docket.
Relevant Service Information
Dassault has issued Service Bulletin
F2000EX–116, dated May 31, 2006, and
Service Bulletin F2000EX–140, dated
February 28, 2007. The actions
described in this service information are
intended to correct the unsafe condition
identified in the MCAI.
Comments Invited
FAA’s Determination and Requirements
of This Proposed AD
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–2008–0294; Directorate Identifier
2007–NM–288–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.
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.
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13MRP1
]]>Agencies
[Federal Register Volume 73, Number 50 (Thursday, March 13, 2008)]
[Proposed Rules]
[Pages 13486-13488]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-5005]
[[Page 13486]]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2008-0306; Directorate Identifier 2008-CE-014-AD]
RIN 2120-AA64
Airworthiness Directives; Cessna Aircraft Company Model 525
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) Model 525 airplanes. This
proposed AD would require you to inspect for missing firewall sealant
between the aft firewall assembly and seal assembly; and, if you find
that firewall sealant is missing, seal with firewall sealant between
the aft firewall assembly and seal assembly. This proposed AD results
from a report that firewall sealant may not have been applied between
the aft firewall assembly and seal assembly during manufacture of
certain Model 525 airplanes. We are proposing this AD to detect and
correct missing firewall sealant between the aft firewall assembly and
seal assembly, which could result in failure of the fire extinguishing
system to prevent the spread of fire through the firewall gap. This
failure could lead to an uncontrolled fire.
DATES: We must receive comments on this proposed AD by May 12, 2008.
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.
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, Product Support, P.O. Box 7706, Wichita,
Kansas 67277; telephone: (316) 517-5800; fax: (316) 942-9006.
FOR FURTHER INFORMATION CONTACT: James Galstad, Aerospace Engineer,
Wichita Aircraft Certification Office, 1801 Airport Road, Room 100,
Wichita, Kansas 67209; telephone: (316) 946-4135; 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-
2008-0306; Directorate Identifier 2008-CE-014-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
We have received a report that firewall sealant may not have been
applied between the aft firewall assembly and seal assembly during
manufacture of Model 525 airplanes, serial numbers 525-0600 through
525-0662.
A nacelle fire may pass through the gap where the firewall sealant
is missing. Although the fire detection system and fire extinguishing
system remain operational, the effectiveness of the fire extinguishing
system has not been shown to prevent the spread of fire through the
firewall gap. The fire could pass through the gap in the firewall or
the effectiveness of the fire extinguishing system be defeated by the
gap.
This condition, if not corrected, could result in an uncontrolled
fire.
Relevant Service Information
We have reviewed Cessna Aircraft Company Citation Service Letter
SL525-71-05, Revision 1, dated February 6, 2008. The service
information describes procedures for:
Inspecting for missing firewall sealant between the aft
firewall assembly and seal assembly; and
Sealing with firewall sealant between the aft firewall
assembly and seal assembly.
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 for missing firewall sealant between the
aft firewall assembly and seal assembly; and, if you find that firewall
sealant is missing, seal with firewall sealant between the aft firewall
assembly and seal assembly.
Differences Between This Proposed AD and the Service Information
The service information requires compliance within 600 hours time-
in-service (TIS) or 1 year after the date of receipt, whichever occurs
first. Due to the severity of the safety issue (uncontrolled fire),
this proposed AD has a compliance of within the next 60 hours TIS after
the effective date of this AD or 60 days after the effective date of
this AD, whichever occurs first. The requirements of this proposed AD,
if adopted as a final rule, would take precedence over the provisions
in the service information.
Costs of Compliance
We estimate that this proposed AD would affect 45 airplanes in the
U.S. registry.
We estimate the following costs to do the proposed inspection:
[[Page 13487]]
----------------------------------------------------------------------------------------------------------------
Total cost per Total cost on
Labor cost Parts cost airplane U.S. operators
----------------------------------------------------------------------------------------------------------------
1 work-hour x $80 per hour = $80............. Not Applicable................. $80 $3,600
----------------------------------------------------------------------------------------------------------------
We estimate the following costs to do any necessary repairs that
would be required based on the results of the proposed inspection. We
have no way of determining the number of airplanes that may need this
repair:
------------------------------------------------------------------------
Total cost per
Labor cost Parts cost airplane
------------------------------------------------------------------------
4 work-hours x $80 per hour = $320.... $30 $350
------------------------------------------------------------------------
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 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-2008-0306; Directorate
Identifier 2008-CE-014-AD.
Comments Due Date
(a) We must receive comments on this airworthiness directive
(AD) action by May 12, 2008.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Model 525 airplanes, serial numbers 525-
0600 through 525-0662, that are certificated in any category.
Unsafe Condition
(d) This AD results from a report that firewall sealant may not
have been applied between the aft firewall assembly and seal
assembly during manufacture of certain Model 525 airplanes. We are
issuing this AD to detect and correct missing firewall sealant
between the aft firewall assembly and seal assembly, which could
result in failure of the fire extinguishing system to prevent the
spread of fire through the firewall gap. This failure could lead to
an uncontrolled fire.
Compliance
(e) To address this problem, you must do the following, unless
already done:
------------------------------------------------------------------------
Actions Compliance Procedures
------------------------------------------------------------------------
(1) Inspect between the Within the next 60 Follow Cessna
6352225 aft firewall hours time-in- Aircraft Company
assembly and 6352226 seal service (TIS) after Citation Service
assembly for missing the effective date Letter SL525-71-05,
firewall sealant. of this AD or Revision 1, dated
within 60 days February 6, 2008.
after the effective
date of this AD,
whichever occurs
first.
(2) If, as a result of the Before further Follow Cessna
inspection required by flight after the Aircraft Company
paragraph (e)(1) of this inspection required Citation Service
AD, you find there is by paragraph (e)(1) Letter SL525-71-05,
missing firewall sealant of this AD. Revision 1, dated
between the 6352225 aft February 6, 2008.
firewall assembly and
6352226 seal assembly, seal
with U000117S firewall
sealant in the gap between
the 6352225 aft firewall
assembly and 6352226 seal
assembly.
------------------------------------------------------------------------
[[Page 13488]]
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: James Galstad, Aerospace Engineer, Wichita ACO, 1801 Airport
Road, Room 100, Wichita, Kansas 67209; telephone: (316) 946-4135;
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, Product Support, P.O. Box 7706,
Wichita, Kansas 67277; telephone: (316) 517-5800; fax: (316) 942-
9006. 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.
Issued in Kansas City, Missouri, on March 7, 2008.
Kim Smith,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. E8-5005 Filed 3-12-08; 8:45 am]
BILLING CODE 4910-13-P
