
[Federal Register: August 21, 2008 (Volume 73, Number 163)]
[Proposed Rules]               
[Page 49359-49362]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr21au08-13]                         

========================================================================
Proposed Rules
                                                Federal Register
________________________________________________________________________

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.

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[[Page 49359]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-0903; Directorate Identifier 2008-NM-123-AD]
RIN 2120-AA64

 
Airworthiness Directives; Cessna Model 560 Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: The FAA proposes to supersede an existing airworthiness 
directive (AD) that applies to certain Cessna Model 560 airplanes. The 
existing AD currently requires installing new minimum airspeed placards 
to notify the flightcrew of the proper airspeeds for operating in both 
normal and icing conditions. The existing AD also requires revising the 
airplane flight manual to provide limitations and procedures for 
operating in icing conditions, for operating with anti-ice systems 
selected ``on'' independent of icing conditions, and for recognizing 
and recovering from inadvertent stall. The existing AD also provides an 
optional terminating action for the placard installation. This proposed 
AD would require the previously optional terminating action. This 
proposed AD results from an evaluation of in-service airplanes 
following an accident. The evaluation indicated that some airplanes 
might have an improperly adjusted stall warning system. We are 
proposing this AD to prevent an inadvertent stall due to the inadequate 
stall warning margin provided by an improperly adjusted stall warning 
system, which could result in loss of controllability of the airplane.

DATES: We must receive comments on this proposed AD by October 6, 2008.

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: 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 AD, contact Cessna 
Aircraft Co., P.O. Box 7706, Wichita, Kansas 67277.

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 (telephone 800-647-5527) is in the 
ADDRESSES section. Comments will be available in the AD docket shortly 
after receipt.

FOR FURTHER INFORMATION CONTACT: Bob Busto, Aerospace Engineer, Systems 
and Propulsion Branch, ACE-116W, FAA, Wichita Aircraft Certification 
Office, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, 
Kansas 67209; telephone (316) 946-4157; fax (316) 946-4107.

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2008-0903; 
Directorate Identifier 2008-NM-123-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

    On November 5, 2007, we issued AD 2007-23-13, amendment 39-15259 
(72 FR 64135, November 15, 2007), for certain Cessna Model 560 
airplanes. That AD requires installing new minimum airspeed placards to 
notify the flightcrew of the proper airspeeds for operating in both 
normal and icing conditions. That AD also requires revising the 
airplane flight manual to provide limitations and procedures for 
operating in icing conditions, for operating with anti-ice systems 
selected ``on'' independent of icing conditions, and for recognizing 
and recovering from inadvertent stall. That AD also provides an 
optional terminating action for the placard installation. That AD 
resulted from an evaluation of in-service airplanes following an 
accident. The evaluation indicated that some airplanes may have an 
improperly adjusted stall warning system. We issued that AD to prevent 
an inadvertent stall due to the inadequate stall warning margin 
provided by an improperly adjusted stall warning system, which could 
result in loss of controllability of the airplane.

Actions Since Existing AD Was Issued

    The preamble to AD 2007-23-13 explains that we consider the 
requirements ``interim action'' and were considering further rulemaking 
to require a functional test of the angle-of-attack (AOA) system to 
adjust the calibration settings of the AOA system, which, in addition 
to the AFM revisions, would constitute terminating action for the 
placard installation required by this AD. The interim action was 
intended to heighten flight crew awareness as to the proper operational 
airspeeds, aircraft characteristics, and stall recovery techniques. We 
now have determined that further rulemaking is indeed necessary, and 
this proposed AD follows from that determination.

Relevant Service Information

    We have reviewed Cessna Alert Service Letters ASL560-34-34 (for 
airplanes equipped with a single AOA system) and ASL560-34-35 (for 
airplanes equipped with a dual AOA system), both Revision 3, both dated

[[Page 49360]]

March 6, 2008, both including Attachments. We referred to Revision 1 of 
the alert service letters as the appropriate source of service 
information for doing the optional terminating action (i.e., doing a 
functional test of the AOA system) specified in AD 2007-23-13. Revision 
3 contains essentially the same procedures as Revision 1. Revision 3 
includes changes to the cruise configuration tolerance and to the 
approach configuration, and standardizes certain nomenclature.
    We have also reviewed Cessna Service Bulletin SB560-34-143, 
Revision 1, dated November 21, 2007. We referred to the original issue, 
dated September 7, 2007, as the appropriate source of service 
information for doing the placard installation specified in AD 2007-23-
13. Revision 1 contains essentially the same procedures as the original 
issue and adds references to certain temporary changes (which are 
already specified in AD 2007-23-13).
    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 develop on other airplanes of the 
same type design. For this reason, we are proposing this AD, which 
would supersede AD 2007-23-13 and would retain the requirements of the 
existing AD. This proposed AD would also require accomplishing the 
terminating action specified in the alert service letters described 
previously. This proposed AD would also require sending the functional 
test results to the manufacturer.

Costs of Compliance

    There are about 538 airplanes of the affected design in the 
worldwide fleet. The following table provides the estimated costs for 
U.S. operators to comply with this proposed AD. There are about 400 
U.S. registered airplanes.

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                             Average
                           Action                              Work hours   labor rate    Cost per    Fleet cost
                                                                             per hour     airplane
----------------------------------------------------------------------------------------------------------------
AFM Revision (required by AD 2007-23-13)....................            1          $80          $80      $32,000
Placard Installation (required by AD 2007-23-13)............            1           80           80       32,000
Functional Test (new proposed action).......................            8           80          640      256,000
----------------------------------------------------------------------------------------------------------------

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. 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.

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 Federal Aviation Administration (FAA) amends Sec.  39.13 by 
removing amendment 39-15259 (72 FR 64135, November 15, 2007) and adding 
the following new airworthiness directive (AD):

Cessna Aircraft Company: Docket No. FAA-2008-0903; Directorate 
Identifier 2008-NM-123-AD.

Comments Due Date

    (a) The FAA must receive comments on this AD action by October 
6, 2008.

Affected ADs

    (b) This AD supersedes AD 2007-23-13.

Applicability

    (c) This AD applies to Cessna Model 560 airplanes, certificated 
in any category, serial numbers (S/Ns) 560-0001 through 0538 
inclusive.

Unsafe Condition

    (d) This AD results from an evaluation of in-service airplanes 
following an accident. The evaluation indicated that some airplanes 
may have an improperly adjusted stall warning system. We are issuing 
this AD to prevent an inadvertent stall due to the inadequate stall 
warning margin provided by an improperly adjusted stall warning 
system, which could result in loss of controllability 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.

Restatement of Requirements of AD 2007-23-13

Airplane Flight Manual (AFM) Revision

    (f) Within 14 days after November 30, 2007 (the effective date 
of AD 2007-23-13), revise

[[Page 49361]]

the Operating Limitations, Normal Procedures, Emergency Procedures, 
and the Approach and Landing sections of the AFM to include the 
information in the temporary changes (TCs) identified in Table 1 of 
this AD, as applicable, except as required by paragraph (k) of this 
AD. These TCs provide limitations and procedures for operating in 
icing conditions, for operating with anti-ice systems selected 
``on'' independent of icing conditions, and for recognizing and 
recovering from inadvertent stall. Operate the airplane according to 
the limitations and procedures in the applicable TCs.

    Note 1: This may be done by inserting a copy of the applicable 
TCs into the applicable AFM. When these TCs have been included in 
the general revisions of the AFM, the general revisions may be 
inserted into the AFM (in lieu of the applicable TCs), provided the 
relevant information in the general revision is identical to that in 
the applicable TCs.


                      Table 1--Cessna Model 560 TCs
------------------------------------------------------------------------
          Airplanes                          Applicable TC
------------------------------------------------------------------------
Model 560 airplanes, S/Ns 560- 560FM TC-R13-08, dated August 31, 2007,
 0001 through -0259 inclusive.  to the Cessna Model 560 Citation V AFM.
                               560FM TC-R13-09, dated August 31, 2007,
                                to the Cessna Model 560 Citation V AFM.
                               560FM TC-R13-10, dated August 31, 2007,
                                to the Cessna Model 560 Citation V AFM.
                               560FM TC-R13-12, dated August 31, 2007,
                                to the Cessna Model 560 Citation V AFM.
                               560FM TC-R13-13, dated August 31, 2007,
                                to the Cessna Model 560 Citation V AFM.
                               560FM TC-R13-14, dated October 2, 2007,
                                to the Cessna Model 560 Citation V AFM.
                               560FM TC-R13-15, dated October 2, 2007,
                                to the Cessna Model 560 Citation V AFM.
                               560FM TC-R13-16, dated October 2, 2007,
                                to the Cessna Model 560 Citation V AFM.
                               560FM TC-R13-17, dated October 2, 2007,
                                to the Cessna Model 560 Citation V AFM.
                               560FM TC-R13-18, dated October 2, 2007,
                                to the Cessna Model 560 Citation V AFM.
                               560FM TC-R13-19, dated October 2, 2007,
                                to the Cessna Model 560 Citation V AFM.
                               560FM TC-R13-20, dated October 2, 2007,
                                to the Cessna Model 560 Citation V AFM.
Model 560 airplanes, S/Ns 560- 56FMA TC-R11-16, dated August 31, 2007,
 0260 through -0538 inclusive.  to the Cessna Model 560 Citation Ultra
                                AFM.
                               56FMA TC-R11-17, dated August 31, 2007,
                                to the Cessna Model 560 Citation Ultra
                                AFM.
                               56FMA TC-R11-19, dated August 31, 2007,
                                to the Cessna Model 560 Citation Ultra
                                AFM.
                               56FMA TC-R11-20, dated August 31, 2007,
                                to the Cessna Model 560 Citation Ultra
                                AFM.
                               56FMA TC-R11-21, dated August 31, 2007,
                                to the Cessna Model 560 Citation Ultra
                                AFM.
                               56FMA TC-R11-23, dated October 2, 2007,
                                to the Cessna Model 560 Citation Ultra
                                AFM.
                               56FMA TC-R11-24, dated October 2, 2007,
                                to the Cessna Model 560 Citation Ultra
                                AFM.
                               56FMA TC-R11-25, dated October 2, 2007,
                                to the Cessna Model 560 Citation Ultra
                                AFM.
                               56FMA TC-R11-26, dated October 2, 2007,
                                to the Cessna Model 560 Citation Ultra
                                AFM.
                               56FMA TC-R11-27, dated October 2, 2007,
                                to the Cessna Model 560 Citation Ultra
                                AFM.
                               56FMA TC-R11-28, dated October 2, 2007,
                                to the Cessna Model 560 Citation Ultra
                                AFM.
                               56FMA TC-R11-29, dated October 2, 2007,
                                to the Cessna Model 560 Citation Ultra
                                AFM.
                               56FMA TC-R11-30, dated October 2, 2007,
                                to the Cessna Model 560 Citation Ultra
                                AFM.
------------------------------------------------------------------------

Placard Installation

    (g) Within 30 days after November 30, 2007, install new minimum 
airspeed placards to notify the flightcrew of the proper airspeeds 
for operating in normal and icing conditions, in accordance with the 
Accomplishment Instructions of Cessna Service Bulletin SB560-34-143, 
dated September 7, 2007, including Attachment and Service Bulletin 
Supplemental Data; or Cessna Service Bulletin SB560-34-143, Revision 
1, dated November 21, 2007. As of the effective date of this AD, 
only Revision 1 may be used. The placards must be installed above or 
near the pilot and copilot attitude indicators or primary flight 
displays and must be in clear view of the pilot and copilot. The 
placards may be removed when the actions specified in paragraphs (i) 
and (j) of this AD have been accomplished.

No Maintenance Transaction Report Required for Cessna Service Bulletin

    (h) Although Cessna Service Bulletin SB560-34-143, dated 
September 7, 2007, including Attachment and Service Bulletin 
Supplemental Data; and Cessna Service Bulletin SB560-34-143, 
Revision 1, dated November 21, 2007; referred to in paragraph (g) of 
this AD, specify to submit a maintenance transaction report to the 
manufacturer, this AD does not include that requirement.

New Requirements of This AD

Terminating Action

    (i) Within 6 months after the effective date of this AD, do a 
functional test of the angle-of-attack (AOA) system, and adjust the 
calibration settings of the AOA system as applicable, in accordance 
with Cessna Alert Service Letter ASL560-34-34 (for airplanes 
equipped with a single AOA system) or ASL560-34-35 (for airplanes 
equipped with a dual AOA system), both Revision 1, both dated 
October 2, 2007, both including Attachments, as applicable; or 
Cessna Alert Service Letter ASL560-34-34 or ASL560-34-35, both 
Revision 3, both dated March 6, 2008, both including Attachments, as 
applicable. As of the effective date of this AD, only Revision 3 may 
be used. Doing the functional test of the AOA system, adjusting the 
calibration settings of the AOA system as applicable, and submitting 
the AOA system test data as specified in paragraph (j) of this AD, 
terminates the placard installation required by paragraph (g) of 
this AD.

    Note 2: Maintenance Manual Revision 24 of Cessna 560 Maintenance 
Manual 56MM has been changed to reflect the intent of the ASLs for 
the maintenance actions and periodic inspections of the AOA/Stall 
Warning System.

Reporting AOA System Test Data

    (j) Submit the AOA system test data report for the functional 
test specified in paragraph (i) of this AD to Glenn Todd, Citation 
Customer Support Engineer, Department 572, P.O. Box 7706, Wichita, 
KS 67277-7706, e-mail: gatodd@cessna.textron.com, fax: 1-316-517-
8500 or 1-316-206-2337. Submit the report at the applicable time 
specified in paragraph (j)(1) or (j)(2) of this AD. The report must 
include the AOA test data, the airplane serial number and 
registration number, and the number of landings and flight hours on 
the airplane. Under the provisions of the Paperwork Reduction Act 
(44 U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) 
has approved the information collection requirements contained in 
this AD and has assigned OMB Control Number 2120-0056.
    (1) If the functional test was done after November 30, 2007: 
Submit the report within 30 days after doing the functional test.
    (2) If the inspection was accomplished prior to November 30, 
2007: Submit the report within 30 days after November 30, 2007.

Removal of Warning From the Limitations Section of the AFM

    (k) For airplanes on which the actions required by paragraph (i) 
of this AD have been done: Within 30 days after doing the actions 
required by paragraph (i) of this AD or within 30 days after the 
effective date of this AD, whichever occurs later, revise the 
Limitations Section of the AFM by removing the following Warning 
statement:


[[Page 49362]]


    ``Warning: Stick Shaker May Not Activate Prior to Buffet/Roll-
Off If Airspeed Is Reduced Below the Appropriate Minimum Speed.''

No Maintenance Transaction Report Required for Cessna Service Letters

    (l) Cessna Alert Service Letters ASL560-34-34 and ASL560-34-35, 
both Revision 1, both dated October 2, 2007, both including 
Attachments; and Cessna Alert Service Letters ASL560-34-34 and 
ASL560-34-35, both Revision 3, both dated March 6, 2008, both 
including Attachments; specify to submit a maintenance transaction 
report to the manufacturer. This AD does not include that 
requirement.

Actions Accomplished According to Previous Issue of Service Bulletin

    (m) Actions accomplished before the effective date of this AD in 
accordance with Cessna Alert Service Letter ASL560-34-34 or ASL560-
34-35, both Revision 2, both dated January 11, 2008, both including 
Attachments, are considered acceptable for compliance with the 
corresponding action specified in paragraph (i) of this AD.

Alternative Methods of Compliance (AMOCs)

    (n)(1) The Manager, Wichita Aircraft Certification Office (ACO), 
FAA, ATTN: Bob Busto, Aerospace Engineer, Systems and Propulsion 
Branch, ACE-116W, FAA, Wichita ACO, 1801 Airport Road, Room 100, 
Mid-Continent Airport, Wichita, Kansas 67209; telephone (316) 946-
4157; fax (316) 946-4107; has the authority to approve AMOCs for 
this AD, if requested using the procedures found in 14 CFR 39.19.
    (2) To request a different method of compliance or a different 
compliance time for this AD, follow the procedures in 14 CFR 39.19. 
Before using any approved AMOC on any airplane to which the AMOC 
applies, notify your appropriate principal inspector (PI) in the FAA 
Flight Standards District Office (FSDO), or lacking a PI, your local 
FSDO.

    Issued in Renton, Washington, on August 12, 2008.
Michael J. Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E8-19386 Filed 8-20-08; 8:45 am]

BILLING CODE 4910-13-P
