Airworthiness Directives; Cessna Model 500, 501, 550, S550, 551, and 560 Airplanes, 20083-20085 [05-7674]
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20083
Federal Register / Vol. 70, No. 73 / Monday, April 18, 2005 / Proposed Rules
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2005–20970; Directorate
Identifier 2004–NM–53–AD]
RIN 2120–AA64
Airworthiness Directives; Cessna
Model 500, 501, 550, S550, 551, and 560
Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
SUMMARY: The FAA proposes to adopt a
new airworthiness directive (AD) for
certain Cessna Model 500, 501, 550,
S550, 551, and 560 airplanes. This
proposed AD would require revising the
airplane flight manual (AFM) to prohibit
use of the wing fuel boost pumps for
defueling under certain conditions;
installing a placard; doing other
specified investigative and corrective
actions as necessary; and modifying the
boost pumps. This proposed AD also
would require the subsequent removal
of the AFM revision and placard. This
proposed AD is prompted by a report of
a chafed electrical wiring harness,
which was arcing inside the fuel tank.
We are proposing this AD to prevent
potential fuel vapor ignition in a fuel
tank, which could result in explosion
and loss of the airplane.
DATES: We must receive comments on
this proposed AD by June 2, 2005.
ADDRESSES: Use one of the following
addresses to submit comments on this
proposed AD.
• DOT Docket Web site: Go to
https://dms.dot.gov and follow the
instructions for sending your comments
electronically.
• Government-wide rulemaking Web
site: Go to https://www.regulations.gov
and follow the instructions for sending
your comments electronically.
• Mail: Docket Management Facility,
U.S. Department of Transportation, 400
Seventh Street, SW., Nassif Building,
room PL–401, Washington, DC 20590.
• By fax: (202) 493–2251.
• Hand Delivery: Room PL–401 on
the plaza level of the Nassif Building,
400 Seventh Street, SW., Washington,
DC, between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
For the service information identified
in this proposed AD, contact Cessna
Aircraft Co., P.O. Box 7706, Wichita,
Kansas 67277.
You can examine the contents of this
AD docket on the Internet at https://
dms.dot.gov, or at the Docket
Management Facility, U.S. Department
of Transportation, 400 Seventh Street,
SW., room PL–401, on the plaza level of
the Nassif Building, Washington, DC.
This docket number is FAA–2005–
20970; the directorate identifier for this
docket is 2004–NM–53–AD.
FOR FURTHER INFORMATION CONTACT:
Bryan Easterwood, Aerospace Engineer,
Electrical Systems and Avionics Branch,
ACE–119W, FAA, Wichita Aircraft
Certification Office, 1801 Airport Road,
room 100, Mid-Continent Airport,
Wichita, Kansas 67209; telephone (316)
946–4132; fax (316) 946–4107.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to submit any written
relevant data, views, or arguments
regarding this proposed AD. Send your
comments to an address listed under
ADDRESSES. Include ‘‘Docket No. FAA–
2005–20970; Directorate Identifier
2004–NM–53–AD’’ in the subject line 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 submitted 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://
dms.dot.gov, including any personal
information you provide. We will also
post a report summarizing each
substantive verbal contact with FAA
personnel concerning this proposed AD.
Using the search function of that Web
site, anyone can find and read the
comments in any of our dockets,
including the name of the individual
who sent the comment (or signed the
comment on behalf of an association,
business, labor union, etc.). You can
review DOT’s complete Privacy Act
Statement in the Federal Register
published on April 11, 2000 (65 FR
19477–78), or you can visit https://
dms.dot.gov.
Examining the Docket
You can examine the AD docket on
the Internet at https://dms.dot.gov, or in
person at the Docket Management
Facility office between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays. The Docket
Management Facility office (telephone
(800) 647–5227) is on the plaza level of
the Nassif Building at the DOT street
address stated in the ADDRESSES section.
Comments will be available in the AD
docket shortly after the DMS receives
them.
Discussion
We have received a report indicating
that chafing can exist between the
submerged electrical wiring harness on
the wing fuel boost pump and an
aluminum fuel line inside the wing fuel
tank. When troubleshooting a tripped
circuit breaker for the fuel boost pump
on a Cessna Model 550 airplane,
technicians discovered that the
electrical wiring harness of the wing
fuel boost pump had chafed through the
wire bundle insulation and was arcing
on an aluminum fuel line inside the
wing fuel tank. Subsequent inspections
of additional airplanes revealed similar
wire chafing on nearly half the
inspected airplanes. The resulting
potential for arcing and fuel vapor
ignition, if not corrected, could result in
explosion and loss of the airplane.
The design of the wire routing
installation, the type and spacing of
electrical wire clamps or lack of
clamping, and the fuel pump wire type
in the area of the wing fuel boost pump
on Model 550 airplanes are the same on
Cessna Model 500, 501, S550, 551, and
560 airplanes; therefore, the unsafe
condition could exist on all of these
airplanes.
Relevant Service Information
We have reviewed the Cessna service
bulletins listed in the following table:
SERVICE INFORMATION
Service bulletin
Date
Airplane model(s)
SB500–28–12 ..........................................
SBS550–28–08 ........................................
SB550–28–14 ..........................................
SB550–28–15 ..........................................
SB560–28–10 ..........................................
SB560–28–11 ..........................................
June 14, 2004 .........................................
May 7, 2004 ............................................
December 2, 2003 ...................................
January 20, 2004 ....................................
April 23, 2004 ..........................................
March 12, 2004 .......................................
500 and 501 ............................................
S550 ........................................................
550 and 551 ............................................
550 ...........................................................
560 ...........................................................
560 ...........................................................
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16:08 Apr 15, 2005
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Fmt 4702
Sfmt 4702
E:\FR\FM\18APP1.SGM
18APP1
Serial Nos.
0001–0689
0001–0160
0002–0733
0801–1075
0001–0538
0539–0648
20084
Federal Register / Vol. 70, No. 73 / Monday, April 18, 2005 / Proposed Rules
The service bulletins describe
procedures for:
• Revising the Limitations section of
the airplane flight manual (AFM) to
prohibit use of the wing fuel boost
pumps for defueling if the individual
fuel load in each wing is less than a
specified weight;
• Installing a placard that advises the
flightcrew of the minimum fuel weight
requirements; and
• Inspecting the full length of the
wiring of the wing fuel boost pumps to
detect chafing through the outer jackets,
through the wire braid (shielding), and
into the wire insulation.
The service bulletins also describe
procedures for corrective and other
specified actions, depending on the
inspection results, as follows:
• Applying sealant to any damaged
areas of the wing fuel boost pump
wiring;
• Installing spiral wrap on fuel boost
pump wiring; and
• Replacing the fuel boost pump with
a new pump, if the wire conductor is
exposed and chafing is found through
the outer jacket, wire braid, and
insulation.
In addition, the service bulletins
describe procedures for inspecting for
damage of the fuel tube and wing
structure, replacing damaged fuel tubes
with new fuel tubes, and replacing or
repairing damaged wing structure.
The service bulletins also describe
procedures for modifying the wing fuel
boost pumps by installing clamps on
certain tube assemblies and on the boost
pump wiring, and ensuring that the
wires will not contact any fuel lines or
the airplane structure.
The service bulletins specify
removing the AFM revision and placard
after doing the inspection, corrective
and other specified actions, and
modification.
Accomplishing the actions specified
in the service information is intended to
adequately address the unsafe
condition.
FAA’s Determination and Requirements
of the Proposed AD
We have evaluated all pertinent
information and identified an unsafe
condition that is likely to exist or
develop on other airplanes of this same
type design. Therefore, we are
proposing this AD, which would require
the actions specified in the service
information described previously,
except as discussed under ‘‘Differences
Between the Proposed AD and the
Service Information.’’
Differences Between the Proposed AD
and the Service Information
in the service bulletins. We find it
necessary to require this minimum
standard on the placard to ensure its
readability.
The service bulletins specify revising
the AFM immediately (after receipt of
the service bulletin), but this proposed
AD would allow up to 25 flight hours
for this action. In developing an
appropriate compliance time for this
action, we considered the safety
implications and operators’ typical
maintenance schedules and determined
that 25 flight hours will have minimal
effect on operators, and no adverse
effect on safety.
Although the Accomplishment
Instructions of the referenced service
bulletins describe procedures for
submitting a sheet recording compliance
with the service bulletin, this proposed
AD would not require that action. We
do not need this information from
operators.
Costs of Compliance
This proposed AD would affect about
2,397 airplanes worldwide. The
following table provides the estimated
costs for U.S. operators to comply with
this proposed AD.
This proposed AD specifies the
placard text size, which is not provided
ESTIMATED COSTS
Work
hours
Applicable service bulletin
SB500–28–12 ..................................................
SBS550–28–08 ................................................
SB550–28–14 ..................................................
SB550–28–15 ..................................................
SB560–28–10 ..................................................
SB560–28–11 ..................................................
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
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16:08 Apr 15, 2005
Jkt 205001
Average labor
rate per hour
20
12
8
8
12
8
$65
65
65
65
65
65
Parts
$2,229
102
1,992
1,936
1,949
1,052
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:
PO 00000
Frm 00024
Fmt 4702
Sfmt 4702
Cost per
airplane
$3,529
882
2,512
2,456
2,729
1,572
Number of
U.S.-registered
airplanes
444
126
469
194
428
101
Fleet cost
$1,566,876
111,132
1,178,128
476,464
1,168,012
158,772
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. See the ADDRESSES
section for a location to examine the
regulatory evaluation.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Safety.
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18APP1
20085
Federal Register / Vol. 70, No. 73 / Monday, April 18, 2005 / Proposed Rules
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:
Comments Due Date
(a) The Federal Aviation Administration
(FAA) must receive comments on this AD
action by June 2, 2005.
Affected ADs
(b) None.
Applicability
(c) This AD applies to the Cessna airplanes
listed in Table 1 of this AD, certificated in
any category.
TABLE 1.—APPLICABILITY
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive (AD):
Cessna Aircraft Company: Docket No. FAA–
2005–20970; Directorate Identifier 2004–
NM–53–AD.
Unsafe Condition
(d) This AD was prompted by a report of
a chafed electrical wiring harness, which was
arcing inside the fuel tank. We are issuing
this AD to prevent potential fuel vapor
ignition in a fuel tank, which could result in
explosion and loss of the airplane.
Compliance
(e) You are responsible for having the
actions required by this AD performed within
the compliance times specified, unless the
actions have already been done.
Service Information
Airplane
model(s)
Serial numbers
500 and 501 ...
S550 ...............
550 and 551 ...
550 .................
560 .................
0001
0001
0002
0801
0001
through
through
through
through
through
0689
0160
0733
1075
0648
inclusive.
inclusive.
inclusive.
inclusive.
inclusive.
(f) The term ‘‘service bulletin’’ as used in
this AD refers to the applicable service
bulletin listed in Table 2 of this AD.
TABLE 2.—SERVICE INFORMATION
Having serial
numbers—
For Cessna Model—
500 and 501 airplanes ..................................................................................................
S550 airplanes ..............................................................................................................
550 and 551 airplanes ..................................................................................................
550 airplanes ................................................................................................................
560 airplanes ................................................................................................................
560 airplanes ................................................................................................................
AFM Revision
(g) Within 25 flight hours after the effective
date of this AD: Revise the Limitations
section of the applicable Cessna airplane
flight manual (AFM) to prohibit use of the
wing fuel boost pumps for defueling under
certain conditions, by inserting the
applicable temporary change identified in the
service bulletin.
Placard Installation
(h) Within 25 flight hours after the effective
date of this AD: Install a placard close to the
fuel quantity gauge, in accordance with the
Accomplishment Instructions of the service
bulletin. In addition to the specifications in
the service bulletin, the letters on the placard
must be at least 1⁄4-inch tall.
Inspection and Modification
(i) Within 300 flight hours after the
effective date of this AD: Do the actions
specified in paragraphs (i)(1) and (i)(2) of this
AD in accordance with the Accomplishment
Instructions of the service bulletin.
(1) Do a detailed inspection for chafed
wiring of the wing fuel boost pumps, and,
before further flight thereafter, do all
applicable corrective and other specified
actions.
(2) Modify the wing fuel boost pumps.
Note 1: For the purposes of this AD, a
detailed inspection is: ‘‘An intensive
examination of a specific item, installation,
or assembly to detect damage, failure, or
irregularity. Available lighting is normally
supplemented with a direct source of good
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16:08 Apr 15, 2005
Jkt 205001
0001–0689
0001–0160
0002–0733
0801–1075
0001–0538
0539–0648
Use Cessna
Service Bulletin—
SB500–28–12
SBS550–28–08
SB550–28–14
SB550–28–15
SB560–28–10
SB560–28–11
Dated—
June 14, 2004.
May 7, 2004.
December 2, 2003.
January 20, 2004.
April 23, 2004.
March 12, 2004.
lighting at an intensity deemed appropriate.
Inspection aids such as mirror, magnifying
lenses, etc., may be necessary. Surface
cleaning and elaborate procedures may be
required.’’
(j) Before further flight after the inspection
and modification required by paragraph (i) of
this AD, remove the AFM temporary change
and placard required by paragraphs (g) and
(h) of this AD.
DEPARTMENT OF TRANSPORTATION
Reporting Clarification
AGENCY:
(k) Although the service bulletin specifies
to submit certain information to the
manufacturer, this AD does not include that
requirement.
Alternative Methods of Compliance
(AMOCs)
(l) The Manager, Wichita Aircraft
Certification Office (ACO), FAA, has the
authority to approve AMOCs for this AD, if
requested in accordance with the procedures
found in 14 CFR 39.19.
Issued in Renton, Washington, on April 11,
2005.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. 05–7674 Filed 4–15–05; 8:45 am]
BILLING CODE 4910–13–P
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Federal Aviation Administration
14 CFR Part 71
[Docket No. FAA–2005–20555; Airspace
Docket No. 05–AAL–08]
Proposed Revision of Class E
Airspace; Emmonak, AK
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking.
SUMMARY: This action proposes to revise
the Class E airspace at Emmonak, AK.
The Standard Instrument Approach
Procedures (SIAP’s) are being amended
for the Emmonak airport. Additional
Class E airspace is needed to contain
aircraft executing instrument
approaches at Emmonak Airport.
Adoption of this proposal would result
in additional Class E airspace upward
from 700 feet (ft.) above the surface at
Emmonak, AK.
DATES: Comments must be received on
or before June 2, 2005.
ADDRESSES: Send comments on the
proposal to the Docket Management
System, U.S. Department of
Transportation, Room Plaza 401, 400
Seventh Street, SW., Washington, DC
E:\FR\FM\18APP1.SGM
18APP1
]]>Agencies
[Federal Register Volume 70, Number 73 (Monday, April 18, 2005)]
[Proposed Rules]
[Pages 20083-20085]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 05-7674]
[[Page 20083]]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2005-20970; Directorate Identifier 2004-NM-53-AD]
RIN 2120-AA64
Airworthiness Directives; Cessna Model 500, 501, 550, S550, 551,
and 560 Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain Cessna Model 500, 501, 550, S550, 551, and 560 airplanes.
This proposed AD would require revising the airplane flight manual
(AFM) to prohibit use of the wing fuel boost pumps for defueling under
certain conditions; installing a placard; doing other specified
investigative and corrective actions as necessary; and modifying the
boost pumps. This proposed AD also would require the subsequent removal
of the AFM revision and placard. This proposed AD is prompted by a
report of a chafed electrical wiring harness, which was arcing inside
the fuel tank. We are proposing this AD to prevent potential fuel vapor
ignition in a fuel tank, which could result in explosion and loss of
the airplane.
DATES: We must receive comments on this proposed AD by June 2, 2005.
ADDRESSES: Use one of the following addresses to submit comments on
this proposed AD.
DOT Docket Web site: Go to https://dms.dot.gov and follow
the instructions for sending your comments electronically.
Government-wide rulemaking Web site: Go to https://
www.regulations.gov and follow the instructions for sending your
comments electronically.
Mail: Docket Management Facility, U.S. Department of
Transportation, 400 Seventh Street, SW., Nassif Building, room PL-401,
Washington, DC 20590.
By fax: (202) 493-2251.
Hand Delivery: Room PL-401 on the plaza level of the
Nassif Building, 400 Seventh Street, SW., Washington, DC, between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
For the service information identified in this proposed AD, contact
Cessna Aircraft Co., P.O. Box 7706, Wichita, Kansas 67277.
You can examine the contents of this AD docket on the Internet at
https://dms.dot.gov, or at the Docket Management Facility, U.S.
Department of Transportation, 400 Seventh Street, SW., room PL-401, on
the plaza level of the Nassif Building, Washington, DC. This docket
number is FAA-2005-20970; the directorate identifier for this docket is
2004-NM-53-AD.
FOR FURTHER INFORMATION CONTACT: Bryan Easterwood, Aerospace Engineer,
Electrical Systems and Avionics Branch, ACE-119W, FAA, Wichita Aircraft
Certification Office, 1801 Airport Road, room 100, Mid-Continent
Airport, Wichita, Kansas 67209; telephone (316) 946-4132; fax (316)
946-4107.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to submit any written relevant data, views, or
arguments regarding this proposed AD. Send your comments to an address
listed under ADDRESSES. Include ``Docket No. FAA-2005-20970;
Directorate Identifier 2004-NM-53-AD'' in the subject line 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 submitted 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://
dms.dot.gov, including any personal information you provide. We will
also post a report summarizing each substantive verbal contact with FAA
personnel concerning this proposed AD. Using the search function of
that Web site, anyone can find and read the comments in any of our
dockets, including the name of the individual who sent the comment (or
signed the comment on behalf of an association, business, labor union,
etc.). You can review DOT's complete Privacy Act Statement in the
Federal Register published on April 11, 2000 (65 FR 19477-78), or you
can visit https://dms.dot.gov.
Examining the Docket
You can examine the AD docket on the Internet at https://
dms.dot.gov, or in person at the Docket Management Facility office
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The Docket Management Facility office (telephone (800) 647-
5227) is on the plaza level of the Nassif Building at the DOT street
address stated in the ADDRESSES section. Comments will be available in
the AD docket shortly after the DMS receives them.
Discussion
We have received a report indicating that chafing can exist between
the submerged electrical wiring harness on the wing fuel boost pump and
an aluminum fuel line inside the wing fuel tank. When troubleshooting a
tripped circuit breaker for the fuel boost pump on a Cessna Model 550
airplane, technicians discovered that the electrical wiring harness of
the wing fuel boost pump had chafed through the wire bundle insulation
and was arcing on an aluminum fuel line inside the wing fuel tank.
Subsequent inspections of additional airplanes revealed similar wire
chafing on nearly half the inspected airplanes. The resulting potential
for arcing and fuel vapor ignition, if not corrected, could result in
explosion and loss of the airplane.
The design of the wire routing installation, the type and spacing
of electrical wire clamps or lack of clamping, and the fuel pump wire
type in the area of the wing fuel boost pump on Model 550 airplanes are
the same on Cessna Model 500, 501, S550, 551, and 560 airplanes;
therefore, the unsafe condition could exist on all of these airplanes.
Relevant Service Information
We have reviewed the Cessna service bulletins listed in the
following table:
Service Information
----------------------------------------------------------------------------------------------------------------
Service bulletin Date Airplane model(s) Serial Nos.
----------------------------------------------------------------------------------------------------------------
SB500-28-12............................. June 14, 2004............. 500 and 501............... 0001-0689
SBS550-28-08............................ May 7, 2004............... S550...................... 0001-0160
SB550-28-14............................. December 2, 2003.......... 550 and 551............... 0002-0733
SB550-28-15............................. January 20, 2004.......... 550....................... 0801-1075
SB560-28-10............................. April 23, 2004............ 560....................... 0001-0538
SB560-28-11............................. March 12, 2004............ 560....................... 0539-0648
----------------------------------------------------------------------------------------------------------------
[[Page 20084]]
The service bulletins describe procedures for:
Revising the Limitations section of the airplane flight
manual (AFM) to prohibit use of the wing fuel boost pumps for defueling
if the individual fuel load in each wing is less than a specified
weight;
Installing a placard that advises the flightcrew of the
minimum fuel weight requirements; and
Inspecting the full length of the wiring of the wing fuel
boost pumps to detect chafing through the outer jackets, through the
wire braid (shielding), and into the wire insulation.
The service bulletins also describe procedures for corrective and
other specified actions, depending on the inspection results, as
follows:
Applying sealant to any damaged areas of the wing fuel
boost pump wiring;
Installing spiral wrap on fuel boost pump wiring; and
Replacing the fuel boost pump with a new pump, if the wire
conductor is exposed and chafing is found through the outer jacket,
wire braid, and insulation.
In addition, the service bulletins describe procedures for
inspecting for damage of the fuel tube and wing structure, replacing
damaged fuel tubes with new fuel tubes, and replacing or repairing
damaged wing structure.
The service bulletins also describe procedures for modifying the
wing fuel boost pumps by installing clamps on certain tube assemblies
and on the boost pump wiring, and ensuring that the wires will not
contact any fuel lines or the airplane structure.
The service bulletins specify removing the AFM revision and placard
after doing the inspection, corrective and other specified actions, and
modification.
Accomplishing the actions specified in the service information is
intended to adequately address the unsafe condition.
FAA's Determination and Requirements of the Proposed AD
We have evaluated all pertinent information and identified an
unsafe condition that is likely to exist or develop on other airplanes
of this same type design. Therefore, we are proposing this AD, which
would require the actions specified in the service information
described previously, except as discussed under ``Differences Between
the Proposed AD and the Service Information.''
Differences Between the Proposed AD and the Service Information
This proposed AD specifies the placard text size, which is not
provided in the service bulletins. We find it necessary to require this
minimum standard on the placard to ensure its readability.
The service bulletins specify revising the AFM immediately (after
receipt of the service bulletin), but this proposed AD would allow up
to 25 flight hours for this action. In developing an appropriate
compliance time for this action, we considered the safety implications
and operators' typical maintenance schedules and determined that 25
flight hours will have minimal effect on operators, and no adverse
effect on safety.
Although the Accomplishment Instructions of the referenced service
bulletins describe procedures for submitting a sheet recording
compliance with the service bulletin, this proposed AD would not
require that action. We do not need this information from operators.
Costs of Compliance
This proposed AD would affect about 2,397 airplanes worldwide. The
following table provides the estimated costs for U.S. operators to
comply with this proposed AD.
Estimated Costs
--------------------------------------------------------------------------------------------------------------------------------------------------------
Number of U.S.-
Applicable service bulletin Work Average labor Parts Cost per registered Fleet cost
hours rate per hour airplane airplanes
--------------------------------------------------------------------------------------------------------------------------------------------------------
SB500-28-12.................................................. 20 $65 $2,229 $3,529 444 $1,566,876
SBS550-28-08................................................. 12 65 102 882 126 111,132
SB550-28-14.................................................. 8 65 1,992 2,512 469 1,178,128
SB550-28-15.................................................. 8 65 1,936 2,456 194 476,464
SB560-28-10.................................................. 12 65 1,949 2,729 428 1,168,012
SB560-28-11.................................................. 8 65 1,052 1,572 101 158,772
--------------------------------------------------------------------------------------------------------------------------------------------------------
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. See the ADDRESSES section for a location
to examine the regulatory evaluation.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Safety.
[[Page 20085]]
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
airworthiness directive (AD):
Cessna Aircraft Company: Docket No. FAA-2005-20970; Directorate
Identifier 2004-NM-53-AD.
Comments Due Date
(a) The Federal Aviation Administration (FAA) must receive
comments on this AD action by June 2, 2005.
Affected ADs
(b) None.
Applicability
(c) This AD applies to the Cessna airplanes listed in Table 1 of
this AD, certificated in any category.
Table 1.--Applicability
------------------------------------------------------------------------
Airplane model(s) Serial numbers
------------------------------------------------------------------------
500 and 501............................ 0001 through 0689 inclusive.
S550................................... 0001 through 0160 inclusive.
550 and 551............................ 0002 through 0733 inclusive.
550.................................... 0801 through 1075 inclusive.
560.................................... 0001 through 0648 inclusive.
------------------------------------------------------------------------
Unsafe Condition
(d) This AD was prompted by a report of a chafed electrical
wiring harness, which was arcing inside the fuel tank. We are
issuing this AD to prevent potential fuel vapor ignition in a fuel
tank, which could result in explosion and loss of the airplane.
Compliance
(e) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.
Service Information
(f) The term ``service bulletin'' as used in this AD refers to
the applicable service bulletin listed in Table 2 of this AD.
Table 2.--Service Information
----------------------------------------------------------------------------------------------------------------
Having serial Use Cessna Service Bulletin--
For Cessna Model-- numbers-- Dated--
----------------------------------------------------------------------------------------------------------------
500 and 501 airplanes............. 0001-0689 SB500-28-12 June 14, 2004.
S550 airplanes.................... 0001-0160 SBS550-28-08 May 7, 2004.
550 and 551 airplanes............. 0002-0733 SB550-28-14 December 2, 2003.
550 airplanes..................... 0801-1075 SB550-28-15 January 20, 2004.
560 airplanes..................... 0001-0538 SB560-28-10 April 23, 2004.
560 airplanes..................... 0539-0648 SB560-28-11 March 12, 2004.
----------------------------------------------------------------------------------------------------------------
AFM Revision
(g) Within 25 flight hours after the effective date of this AD:
Revise the Limitations section of the applicable Cessna airplane
flight manual (AFM) to prohibit use of the wing fuel boost pumps for
defueling under certain conditions, by inserting the applicable
temporary change identified in the service bulletin.
Placard Installation
(h) Within 25 flight hours after the effective date of this AD:
Install a placard close to the fuel quantity gauge, in accordance
with the Accomplishment Instructions of the service bulletin. In
addition to the specifications in the service bulletin, the letters
on the placard must be at least \1/4\-inch tall.
Inspection and Modification
(i) Within 300 flight hours after the effective date of this AD:
Do the actions specified in paragraphs (i)(1) and (i)(2) of this AD
in accordance with the Accomplishment Instructions of the service
bulletin.
(1) Do a detailed inspection for chafed wiring of the wing fuel
boost pumps, and, before further flight thereafter, do all
applicable corrective and other specified actions.
(2) Modify the wing fuel boost pumps.
Note 1: For the purposes of this AD, a detailed inspection is:
``An intensive examination of a specific item, installation, or
assembly to detect damage, failure, or irregularity. Available
lighting is normally supplemented with a direct source of good
lighting at an intensity deemed appropriate. Inspection aids such as
mirror, magnifying lenses, etc., may be necessary. Surface cleaning
and elaborate procedures may be required.''
(j) Before further flight after the inspection and modification
required by paragraph (i) of this AD, remove the AFM temporary
change and placard required by paragraphs (g) and (h) of this AD.
Reporting Clarification
(k) Although the service bulletin specifies to submit certain
information to the manufacturer, this AD does not include that
requirement.
Alternative Methods of Compliance (AMOCs)
(l) The Manager, Wichita Aircraft Certification Office (ACO),
FAA, has the authority to approve AMOCs for this AD, if requested in
accordance with the procedures found in 14 CFR 39.19.
Issued in Renton, Washington, on April 11, 2005.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-7674 Filed 4-15-05; 8:45 am]
BILLING CODE 4910-13-P
