[Federal Register Volume 76, Number 169 (Wednesday, August 31, 2011)]
[Proposed Rules]
[Pages 54141-54143]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2011-22225]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2011-0913; Directorate Identifier 2011-NM-031-AD]
RIN 2120-AA64
Airworthiness Directives; Cessna Aircraft Company Model 680
Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: We propose to adopt a new airworthiness directive (AD) for the
products listed above. This proposed AD would require adding diodes to
the fuel cross-feed wiring, and revising the airplane flight manual to
include procedures to use when the left or right generator is selected
OFF. This proposed AD was prompted by a false cross-feed command to the
right-hand fuel control card, due to the cross-feed inputs on the left-
and right-hand fuel control cards being connected together and causing
an imbalance of fuel between the left and right wing tanks. We are
proposing this AD to prevent lateral imbalance of the airplane, which
can be corrected by deflecting the aileron trim, but which increases
the pilot's workload. Uncontrolled fuel cross-feed results in lateral
imbalance that could exceed the airplane's limitation in a short period
of time. Exceeding the lateral imbalance limit could result in reduced
control of the airplane.
DATES: We must receive comments on this proposed AD by October 17,
2011.
ADDRESSES: You may send comments by any of the following methods:
Federal eRulemaking Portal: Go to http://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: Deliver to Mail address above 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 Co., P.O. Box 7706, Wichita, Kansas 67277; telephone
316-517-6215; fax 316-517-5802; e-mail [email protected];
Internet https://www.cessnasupport.com/newlogin.html. You may review
copies of the referenced service information at the FAA, Transport
Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. For
information on the availability of this material at the FAA, call 425-
227-1221.
Examining the AD Docket
You may examine the AD docket on the Internet at http://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 AD docket contains this proposed AD, the regulatory
evaluation, any comments received, and other information. The street
address for the Docket Office (phone: 800-647-5527) is in the ADDRESSES
section. Comments will be available in the AD docket shortly after
receipt.
FOR FURTHER INFORMATION CONTACT: Nhien Hoang, 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; phone: (316) 946-4190; fax: (316) 946-
4107; e-mail: [email protected].
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under the ADDRESSES section. Include ``Docket No. FAA-2011-0913;
Directorate Identifier 2011-NM-031-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 because of those comments.
We will post all comments we receive, without change, to http://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
We received a report that a Model 680 airplane in flight displayed
a DC EMER BUS L amber crew alerting system (CAS) message. Per the
emergency/abnormal procedures checklist, the flightcrew identified a
fault on the left main electrical bus and selected the left generator
to OFF.
The co-pilot (flying the airplane due to the pilot's primary flight
display being disabled by the left generator OFF, which also disabled
the left fuel quantity indication) observed that an increasing amount
of right aileron control input was required to maintain a wings-level
attitude.
After the airplane safely landed, investigation showed that the
left tank had 5,500 pounds of fuel (full) and the right tank 3,300
pounds. The flightcrew confirmed it had not selected the fuel cross-
feed during flight. During the 20 minutes that elapsed between
selecting the left generator OFF and landing, sufficient fuel had
migrated from the right to the left tank creating an imbalance of 2,200
pounds. The maximum permissible fuel imbalance for this airplane is 400
pounds.
Loss of power on the left main electrical bus results in a false
cross-feed command to the right-hand fuel control card, due to the
cross-feed inputs on the left- and right-hand fuel control cards being
connected together, thereby causing an imbalance of fuel between the
left and right wing tanks.
[[Page 54142]]
This condition, if not corrected, could result in lateral imbalance of
the airplane, which can be corrected by deflecting the aileron trim,
but which increases the pilot's workload. Uncontrolled fuel cross-feed
results in lateral imbalance that will exceed the airplane's limitation
in a short period of time. Exceeding the lateral imbalance limit could
result in reduced control of the airplane.
Relevant Service Information
We reviewed Cessna Service Bulletin SB680-24-11, including Service
Bulletin Supplemental Data, dated December 16, 2010, which describes
procedures for adding diodes to the fuel cross-feed wiring. We have
also reviewed Cessna Temporary FAA Approved Airplane Flight Manual
Change 68FM TC-R09-13, dated October 15, 2010, to the Cessna 680
Citation Sovereign Airplane Flight Manual, which introduces procedures
to use when the left or right generator is selected OFF.
FAA's Determination
We are proposing this AD because we evaluated all the relevant
information and determined the unsafe condition described previously is
likely to exist or develop in other products of this same type design.
Proposed AD Requirements
This proposed AD would require accomplishing the actions specified
in the service information described previously.
Costs of Compliance
We estimate that this proposed AD affects 198 airplanes of U.S.
registry.
We estimate the following costs to comply with this proposed AD:
Estimated Costs
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Cost per Cost on U.S.
Action Labor cost Parts cost product operators
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Installation....................... 4 work-hours x $85 per hour $40 $380 $75,240
= $340.
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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, section 106, describes the
authority of the FAA Administrator. subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
We are issuing this rulemaking under the authority described in
subtitle VII, part A, subpart III, Section 44701: ``General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.
Regulatory Findings
We determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would not
have a substantial direct effect on the States, on the relationship
between the national Government and the States, or on the distribution
of power and responsibilities among the various levels of government.
For the reasons discussed above, I certify this proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979),
(3) Will not affect intrastate aviation in Alaska, and
(4) 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.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, 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
airworthiness directive (AD):
Cessna Aircraft Company: Docket No. FAA-2011-0913; Directorate
Identifier 2011-NM-031-AD.
Comments Due Date
(a) We must receive comments by October 17, 2011.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Cessna Aircraft Company Model 680
airplanes, certificated in any category, serial numbers -0001
through -0289 inclusive, and -0291 through -0296 inclusive.
Subject
(d) Joint Aircraft System Component (JASC)/Air Transport
Association (ATA) of America Code 24: Electrical power.
Unsafe Condition
(e) This AD was prompted by a false cross-feed command to the
right-hand fuel control card, due to the cross-feed inputs on the
left- and right-hand fuel control cards being connected together and
causing an imbalance of fuel between the left and right wing tanks.
We are issuing this AD to prevent lateral imbalance of the airplane,
which can be corrected by deflecting the aileron trim, but which
increases the pilot's workload. Uncontrolled fuel cross-feed results
in lateral imbalance that could exceed the airplane's limitation in
a short period of time and result in reduced controllability of the
airplane.
Compliance
(f) Comply with this AD within the compliance times specified,
unless already done.
Installation
(g) Within 400 flight hours or 12 months after the effective
date of this AD, whichever occurs first: Install a kit, part number
(P/N) SB680-24-11, to the left and right motive flow relays, in
accordance with the Accomplishment Instructions of Cessna Service
Bulletin SB680-24-11, dated December 16, 2010. The kit (P/N SB680-
24-11) contains 2 sleeves, 4 splices, 2 diodes (P/N 1N4006), and
instructions.
(h) Before further flight after accomplishing the actions
required by paragraph (g) of this AD: Revise the Cessna 680 Citation
Sovereign Airplane Flight Manual (AFM) to include the information in
Cessna Temporary FAA Approved Airplane Flight Manual Change 68FM TC-
R09-13, dated October 15, 2010, and remove the Temporary Changes
(TCs)
[[Page 54143]]
identified in table 1 of this AD. Cessna Temporary FAA Approved
Airplane Flight Manual Change 68FM TC-R09-13, dated October 15,
2010, introduces procedures to use when the left or right generator
is selected OFF. Operate the airplane according to the procedures in
Cessna Temporary FAA Approved Airplane Flight Manual Change 68FM TC-
R09-13, dated October 15, 2010.
Table 1--TCs To Remove From the Cessna 680 AFM
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Cessna TCs-- Dated--
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68FM TC-R09-09....................... October 15, 2010.
68FM TC-R09-10....................... October 15, 2010.
68FM TC-R09-11....................... October 15, 2010.
68FM TC-R09-12....................... October 15, 2010.
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Note 1: Updating the Cessna 680 Citation Sovereign AFM may be
done by inserting a copy of Cessna Temporary FAA Approved Airplane
Flight Manual Change 68FM TC-R09-13, dated October 15, 2010, into
the AFM. When this TC has been included in general revisions of the
AFM, the general revisions may be inserted in the AFM, provided the
relevant information in the general revision is identical to that in
Cessna Temporary FAA Approved Airplane Flight Manual Change 68FM TC-
R09-13, and this TC may be removed.
Alternative Methods of Compliance (AMOCs)
(i)(1) The Manager, Wichita Aircraft Certification Office (ACO),
ACE-115W, FAA, has the authority to approve AMOCs for this AD, if
requested using the procedures found in 14 CFR 39.19. In accordance
with 14 CFR 39.19, send your request to your principal inspector or
local Flight Standards District Office, as appropriate. If sending
information directly to the manager of the ACO, send it to the
attention of the person identified in the Related Information
section of this AD.
(2) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the local flight standards district office/certificate holding
district office.
Related Information
(j) For more information about this AD, contact Nhien Hoang,
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; phone: (316)
946-4190; fax: (316) 946-4107; e-mail: [email protected].
(k) For service information identified in this AD, contact
Cessna Aircraft Co., P.O. Box 7706, Wichita, Kansas 67277; telephone
316-517-6215; fax 316-517-5802; e mail
[email protected]; Internet https://www.cessnasupport.com/newlogin.html. You may review copies of the
referenced service information at the FAA, Transport Airplane
Directorate, 1601 Lind Avenue, SW., Renton, Washington. For
information on the availability of this material at the FAA, call
425-227-1221.
Issued in Renton, Washington, on August 25, 2011.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2011-22225 Filed 8-30-11; 8:45 am]
BILLING CODE 4910-13-P