[Federal Register Volume 72, Number 21 (Thursday, February 1, 2007)]
[Proposed Rules]
[Pages 4663-4669]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E7-1604]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2006-26498; Directorate Identifier 2006-CE-83-AD]
RIN 2120-AA64


Airworthiness Directives; The Cessna Aircraft Company Models 208 
and 208B Airplanes

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

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to supersede Airworthiness Directive (AD) 2006-06-
06, which applies to certain Cessna Aircraft Company (Cessna) Models 
208 and 208B airplanes. AD 2006-06-06 currently requires you to 
incorporate information into the applicable section of the Airplane 
Flight Manual (AFM) and Pilot's Operating Handbook (POH) and requires 
installation of placards. Since we issued AD 2006-06-06, Cessna issued 
further revisions to the AFM Supplement S1 ``Known Icing Equipment'' 
and developed a low airspeed awareness system. Consequently, this 
proposed AD would require you to incorporate the AFM Supplement 
revisions, to install the low airspeed awareness system, and to retain 
the requirements of AD 2006-06-06 until the above requirements are 
incorporated. We are proposing this AD to assure that the pilot has 
enough information and the necessary equipment to prevent loss of 
control of the airplane while in flight during icing conditions.

DATES: We must receive comments on this proposed AD by March 5, 2007.

ADDRESSES: Use one of the following addresses to comment on this 
proposed AD:
     DOT Docket Web site: Go to http://dms.dot.gov and follow 
the instructions for sending your comments electronically.
     Government-wide rulemaking Web site: Go to http://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 20590-0001.
     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.
     Federal eRulemaking Portal: http://www.regulations.gov. 
Follow the instructions for submitting comments.
    For service information identified in this proposed AD, contact The 
Cessna Aircraft Company, Product Support, P.O. Box 7706, Wichita, 
Kansas 67277.

FOR FURTHER INFORMATION CONTACT: Robert P. Busto, Aerospace Engineer, 
Wichita Aircraft Certification Office, FAA, 1801 Airport Road, 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 regarding this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include the docket

[[Page 4664]]

number, ``FAA-2006-26498; Directorate Identifier 2006-CE-83-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 http://dms.dot.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

    Several accidents/incidents with Cessna Models 208 and 208B 
airplanes during operations in icing conditions, including six 
accidents in the 2003/2004 icing season and nine accidents in the 2004/
2005 icing season, caused us to issue AD 2005-07-01, Amendment 39-14025 
(70 FR 15223), which required the incorporation of revisions into 
applicable section of the AFM, and AD 2006-01-11, Amendment 39-14450 
(71 FR 16994). AD 2006-01-11 requires the installation of a pilot 
assist handle, pneumatic deicing boots on the cargo pod and landing 
gear struts, and changes to the Limitations Section of the AFM if the 
airplane is to be operated in ground icing conditions and approved for 
flight into known or forecast icing conditions. AD 2005-07-01 was 
superseded by AD 2006-06-06, Amendment 39-14514 (71 FR 13533, March 16, 
2006). AD 2006-06-06 currently requires the following on certain Cessna 
Models 208 and 208B airplanes:
     Incorporation of revisions to the FAA-approved AFM and 
FAA-approved AFM Supplement S1 ``Known Icing Equipment;''
     Incorporation of new text in the Limitations Section of 
the AFM and AFM Supplement; and
     Incorporation of new text in the Performance Section of 
the AFM Supplement and the fabrication and installation of placards.
    AD 2006-06-06 was intended to be an interim action. Cessna has 
since published revisions to the AFM Supplement S1 ``Known Icing 
Equipment,'' which incorporates climb performance data in icing 
conditions. This data is to be used for preflight planning and as an 
in-flight limitation. AD 2006-06-06 included a limitation on autopilot 
use as an interim action until the development of an acceptable low 
speed awareness system. Cessna has issued service information 
introducing this system. Cessna has also developed specific training 
for operation of the Models 208 and 208B airplanes in icing conditions. 
This training is available on-line at: http://www.cessnaelearning.com 
or as part of the Cessna Winter Awareness Seminars.
    If the pilot does not have enough information in the AFM or the 
necessary equipment to conduct safe flight into icing conditions, then 
loss of control could occur.

Relevant Service Information

    We have reviewed Cessna Caravan Service Bulletin (SB) CAB06-8, 
dated September 18, 2006; Cessna Caravan SB CAB06-11, dated October 9, 
2006; and Cessna Caravan Service Kit (SK) 208-171, dated October 9, 
2006.
    The service information includes the following:
     Cessna Caravan SB CAB06-8: revisions to the Pilot's 
Operating Handbook (POH) Supplement S1 ``Known Icing Equipment'' and 
installation instructions for installation of operational placards; and
     Cessna Caravan SB CAB06-11: announces the availability of 
a Service Kit which provides parts and instructions to install a new 
low airspeed awareness system.
     Cessna Caravan SK208-171: instructions for the 
installation of a new icing low speed awareness system.
    In addition, Cessna has developed revisions to the AFM Supplement 
S1 ``Known Icing Equipment'' as follows:

------------------------------------------------------------------------
                Document                             Affects
------------------------------------------------------------------------
Revision 9 of the Model 208 (675 SHP)    Cessna Model 208 airplanes with
 FAA-approved Flight Manual Supplement    a Pratt & Whitney of Canada
 S1 ``Known Icing Equipment,'' Cessna     Ltd., PT6A-114A turboprop
 document D1352-S1-09, dated August 24,   engine installed (675 SHP) or
 2006.                                    FAA-approved engine of
                                          equivalent or higher
                                          horsepower installed, equipped
                                          with airframe deicing
                                          pneumatic boots, that are not
                                          currently prohibited from
                                          flight in known or forecast
                                          icing.
Revision 8 of the Model 208 (600 SHP)    Cessna Model 208 airplanes with
 FAA-approved Flight Manual Supplement    a Pratt & Whitney of Canada
 S1 ``Known Icing Equipment,'' Cessna     Ltd., PT6A-114 turboprop
 document D1307-S1-08, dated August 24,   engine installed (600 SHP) or
 2006.                                    FAA-approved engine of
                                          equivalent horsepower
                                          installed, equipped with
                                          airframe deicing pneumatic
                                          boots, that are not currently
                                          prohibited from flight in
                                          known or forecast icing.
Revision 9 of the 208B (675 SHP) FAA-    Cessna Model 208B airplanes
 approved Flight Manual Supplement S1     with a Pratt & Whitney of
 ``Known Icing Equipment,'' Cessna        Canada Ltd., PT6A-114A
 document D1329-S1-09, dated August 24,   turboprop engine installed
 2006.                                    (675 SHP) or FAA-approved
                                          engine of equivalent or higher
                                          horsepower installed, equipped
                                          with airframe deicing
                                          pneumatic boots, that are not
                                          currently prohibited from
                                          flight in known or forecast
                                          icing.
Revision 9 of the 208B (600 SHP) FAA-    Cessna Model 208B airplanes
 approved Flight Manual Supplement S1     with a Pratt & Whitney of
 ``Known Icing Equipment,'' Cessna        Canada Ltd., PT6A-114
 document D1309-S1-09, dated August 24,   turboprop engine installed
 2006.                                    (600 SHP) or FAA-approved
                                          engine of equivalent
                                          horsepower installed, equipped
                                          with airframe deicing
                                          pneumatic boots, that are not
                                          currently prohibited from
                                          flight in known or forecast
                                          icing.
------------------------------------------------------------------------

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 supersede AD 2006-06-06 with a new AD that would:
     Require the actions in the previously referenced service 
information; and
     Retain the actions of AD 2006-06-06 until the above 
requirements are incorporated.

Costs of Compliance

    We estimate that this proposed AD would affect 765 airplanes in the 
U.S. registry.
    We estimate the following costs to do the proposed actions:

[[Page 4665]]



----------------------------------------------------------------------------------------------------------------
                                                                                 Total cost per   Total cost on
                          Labor cost                              Parts cost        airplane      U.S. operators
----------------------------------------------------------------------------------------------------------------
22 work-hours x $80 per hour = $1,760........................          $6,440           $8,200       $6,273,000
----------------------------------------------------------------------------------------------------------------

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.

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 http://dms.dot.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) 647-5227) 
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 removing Airworthiness Directive 
(AD) 2006-06-06, Amendment 39-14514, (71 FR 13533, March 16, 2006), and 
adding the following new AD:

Cessna Aircraft Company: Docket No. FAA-2006-26498; Directorate 
Identifier 2006-CE-83-AD.

Comments Due Date

    (a) We must receive comments on this airworthiness directive 
(AD) action by March 5, 2007.

Affected ADs

    (b) This AD supersedes AD 2006-06-06, Amendment 39-14514.

Applicability

    (c) This AD applies to Models 208 and 208B, all serial numbers 
that are certificated in any category.

Unsafe Condition

    (d) This AD results from our determination that further 
revisions to the Airplane Flight Manual (AFM) Supplement S1 ``Known 
Icing Equipment'' are necessary, and the installation of a low 
airspeed awareness system is required. We are issuing this AD to 
assure that the pilot has enough information and the necessary 
equipment to prevent loss of control of the airplane while in-flight 
during icing conditions.

New Actions Required by This AD

    (e) Within the next 30 days after the effective date of this AD, 
do the following, unless already done:
    (1) For all Model 208 and 208B aircraft not currently restricted 
from flight into known or forecast icing: Install a low airspeed 
awareness system following the instructions in Cessna Service 
Bulletin CAB06-11 and Service Kit SK 208-171, both dated October 9, 
2006.
    (2) Incorporate the following revisions to the AFM Supplement S1 
``Known Icing Equipment'' as applicable:

------------------------------------------------------------------------
                Document                             Affects
------------------------------------------------------------------------
(i) Revision 9 of the Model 208 (675     Cessna Model 208 airplanes with
 SHP) FAA-approved Flight Manual          a Pratt & Whitney of Canada
 Supplement S1 ``Known Icing              Ltd., PT6A-114A turboprop
 Equipment,'' Cessna document D1352-S1-   engine installed (675 SHP) or
 09, dated August 24, 2006.               FAA-approved engine of
                                          equivalent or higher
                                          horsepower installed, equipped
                                          with airframe deicing
                                          pneumatic boots, that are not
                                          currently prohibited from
                                          flight in known or forecast
                                          icing.
(ii) Revision 8 of the Model 208 (600    Cessna Model 208 airplanes with
 SHP) FAA-approved Flight Manual          a Pratt & Whitney of Canada
 Supplement S1 ``Known Icing              Ltd., PT6A-114 turboprop
 Equipment,'' Cessna document D1307-S1-   engine installed (600 SHP) or
 08, dated August 24, 2006.               FAA-approved engine of
                                          equivalent horsepower
                                          installed, equipped with
                                          airframe deicing pneumatic
                                          boots, that are not currently
                                          prohibited from flight in
                                          known or forecast icing.
(iii) Revision 9 of the Model 208B (675  Cessna Model 208B airplanes
 SHP) FAA-approved Flight Manual          with a Pratt & Whitney of
 Supplement S1 ``Known Icing              Canada Ltd., PT6A-114A
 Equipment,'' Cessna document D1329-S1-   turboprop engine installed
 09, dated August 24, 2006.               (675 SHP) or FAA-approved
                                          engine of equivalent or higher
                                          horsepower installed, equipped
                                          with airframe deicing
                                          pneumatic boots, that are not
                                          currently prohibited from
                                          flight in known or forecast
                                          icing.

[[Page 4666]]

 
(iv) Revision 9 of the Model 208B (600   Cessna Model 208B airplanes
 SHP) FAA-approved Flight Manual          with a Pratt & Whitney of
 Supplement S1 ``Known Icing              Canada Ltd., PT6A-114
 Equipment,'' Cessna document D1309-S1-   turboprop engine installed
 09, dated August 24, 2006.               (600 SHP) or FAA-approved
                                          engine of equivalent
                                          horsepower installed, equipped
                                          with airframe deicing
                                          pneumatic boots, that are not
                                          currently prohibited from
                                          flight in known or forecast
                                          icing.
------------------------------------------------------------------------

    (3) For all Model 208 and 208B aircraft equipped with pneumatic 
deicing boots, and not currently restricted from flight into known 
or forecast icing: incorporate the following information in the 
Limitations Section of the Airplane Flight Manual (AFM) Supplement 
S1 ``Known Icing Equipment'' to require pilot training before 
further flight into known or forecast icing conditions. The owner/
operator holding at least a private pilot certificate as authorized 
by section 43.7 of the Federal Aviation Regulations (14 CFR 43.7) 
may insert the information into the POH specified in paragraphs 
(e)(3)(i) and (e)(3)(ii) of this AD. You may insert a copy of this 
AD into the appropriate sections of the POH to comply with this 
action. Make an entry into the aircraft records showing compliance 
with this portion of the AD in accordance with section 43.9 of the 
Federal Aviation Regulations (14 CFR 43.9):
    (i) ``The pilot-in-command must successfully complete specific 
training for flight into icing conditions provided by Cessna 
Aircraft Company within the 12 calendar months preceding any flight 
into known or forecast icing conditions.
    Completion of either of the following courses will meet this 
training requirement:

Caravan Cold Wx Ops Onsite--C14694--(CAC 14694)
Caravan Cold Wx Ops Online--C14695--(CAC 14695)''

    (ii) ``Note: The three-hour, on-line training course became 
available on October 2, 2006, at: http://www.cessnaelearning.com. 
The three-hour on-site training courses are scheduled annually in 
October at various locations and provided by Cessna Aircraft Company 
at no cost as part of the Cessna Winter Awareness Seminars. 
Confirmation of pilot training completion will be maintained by 
Cessna Aircraft Company. Please note that all operators of the 
affected airplanes must initiate action to notify and ensure that 
flight crewmembers are aware of this requirement.''
    (f) The actions in paragraphs (g) and (h) below are retained in 
this AD from AD 2006-06-06. The new actions required by this AD in 
paragraph (e) above terminates the requirement for the actions in 
paragraphs (g) and (h).
    (g) No later than March 27, 2006 (3 days after March 24, 2006, 
which is the effective date of AD 2006-06-06), incorporate the 
following revisions into the Airplane Flight Manual (AFM), unless 
already accomplished:

------------------------------------------------------------------------
                                          Incorporate the following AFM
           Affected airplanes                   revision document
------------------------------------------------------------------------
(1) Cessna Model 208 airplanes and       Section 2: Limitations and
 Model 208B airplanes, all serial         Section 4: Normal Procedures:
 numbers.                                 Temporary Revision 208PHTR05,
                                          dated June 27, 2005, to the
                                          POH and FAA-approved AFM.
(2) Cessna Model 208 airplanes with a    Section 9: Optional Systems
 Pratt & Whitney of Canada Ltd., PT6A-    Description and Operating
 114A turboprop engine installed (675     Procedures: Revision 6 of the
 SHP) or FAA-approved engine of           208 (675 SHP) POH/FAA-approved
 equivalent horsepower installed,         AFM Supplement S1 ``Known
 equipped with airframe deicing           Icing Equipment,'' Cessna
 pneumatic boots, that are not            document D1352-S1-06, dated
 currently prohibited from flight in      June 27, 2005.
 known or forecast icing.
(3) Cessna Model 208 airplanes with a    Section 9: Optional Systems
 Pratt & Whitney of Canada Ltd., PT6A-    Description and Operating
 114 turboprop engine installed (600      Procedures: Revision 6 of the
 SHP) or FAA-approved engine of           Cessna Model 208 (600 SHP) POH/
 equivalent horsepower installed,         FAA-approved AFM Supplement S1
 equipped with airframe deicing           ``Known Icing Equipment,''
 pneumatic boots, that are not            Cessna document D1307-S1-06,
 currently prohibited from flight in      dated June 27, 2005.
 known or forecast icing.
(4) Cessna Model 208B airplanes with a   Section 9: Optional Systems
 Pratt & Whitney of Canada Ltd., PT6A-    Description and Operating
 114A turboprop engine installed (675     Procedures: Revision 7 of the
 SHP) or FAA-approved engine of           208B (675 SHP) POH/FAA-
 equivalent horsepower installed,         approved AFM Supplement S1
 equipped with airframe deicing           ``Known Icing Equipment,''
 pneumatic boots, that are not            Cessna document D1329-S1-07,
 currently prohibited from flight in      dated June 27, 2005.
 known or forecast icing.
(5) Cessna Model 208B airplanes with a   Section 9: Optional Systems
 Pratt & Whitney of Canada Ltd., PT6A-    Description and Operating
 114 turboprop engine installed (600      Procedures: Revision 6 of the
 SHP) or FAA-approved engine of           208B (600 SHP) POH/FAA-
 equivalent horsepower installed,         approved AFM Supplement S1
 equipped with airframe deicing           ``Known Icing Equipment,''
 pneumatic boots, that are not            Cessna document D1309-S1-06,
 currently prohibited from flight in      dated June 27, 2005.
 known or forecast icing.
------------------------------------------------------------------------

    (h) You must do the following actions, unless already done. 
These changes are to the POH and FAA-approved AFM and to the POH/
FAA-approved AFM Supplement S1 ``Known Icing Equipment'' mandated in 
paragraph (g) of this AD:

------------------------------------------------------------------------
             Actions                  Compliance          Procedures
------------------------------------------------------------------------
(1) For Cessna Model 208          No later than       Not Applicable.
 airplanes and Model 208B          March 27, 2006 (3
 airplanes, all serial numbers,    days after March
 equipped with airframe deicing    24, 2006, which
 pneumatic boots, that are not     is the effective
 currently prohibited from         date of AD 2006-
 flight in known or forecast       06-06).
 icing: You are prohibited from
 continued flight after
 encountering moderate or
 greater icing conditions. The
 airplane can dispatch into
 forecast areas of icing but
 must exit moderate or greater
 icing conditions if encountered.

[[Page 4667]]

 
(2) For Cessna Model 208          No later than       The owner/operator
 airplanes and Model 208B          March 27, 2006 (3   holding at least
 airplanes, all serial numbers,    days after March    a private pilot
 equipped with airframe deicing    24, 2006, which     certificate as
 pneumatic boots, that are not     is the effective    authorized by
 currently prohibited from         date of AD 2006-    section 43.7 of
 flight in known or forecast       06-06).             the Federal
 icing:                                                Aviation
(i) Insert the text in Appendix                        Regulations (14
 1 of this AD preceding the                            CFR 43.7) may
 KINDS OF OPERATION LIMITS                             insert the
 paragraph in the LIMITATIONS                          information into
 section of the Cessna Models                          the POH/AFM as
 208 or 208B POH and FAA-                              specified in
 approved AFM..                                        paragraph (h)(2)
(ii) Insert the text in Appendix                       of this AD. You
 2 of this AD in the LIMITATIONS                       may insert a copy
 section of the Cessna Models                          of this AD into
 208 or 208B POH and FAA-                              the appropriate
 approved AFM KNOWN ICING                              sections of the
 EQUIPMENT SUPPLEMENT S1 at the                        POH/AFM to comply
 beginning of the paragraph                            with this action.
 ``REQUIRED EQUIPMENT.''.                              Make an entry
                                                       into the aircraft
                                                       records showing
                                                       compliance with
                                                       portion of the AD
                                                       in accordance
                                                       with section 43.9
                                                       of the Federal
                                                       Aviation
                                                       Regulations (14
                                                       CFR 43.9).
(3) For Cessna Model 208          No later than       The owner/operator
 airplanes and Model 208B          March 27, 2006 (3   holding at least
 airplanes, all serial numbers,    days after March    a private pilot
 equipped with airframe deicing    24, 2006, which     certificate as
 pneumatic boots, that are not     is the effective    authorized by
 currently prohibited from         date of AD 2006-    section 43.7 of
 flight in known or forecast       06-06).             the Federal
 icing: Install 3 placards with                        Aviation
 black letters on a white                              Regulations (14
 background. The placards shall                        CFR 43.7) may
 be located on the instrument                          install the
 panel in one of the following                         placards as
 areas: under the radio stack,                         specified in
 immediately above the pilot's                         paragraph (h)(3)
 flight instruments, or below                          of this AD. Make
 the pilot's vertical speed                            an entry into the
 indicator. Lettering on the                           aircraft records
 placard shall be a minimum                            showing
 height of \1/8\-inch.                                 compliance with
(i) Placard 1 shall include the                        portion of the AD
 text of Appendix 3 of this AD..                       in accordance
(ii) Placard 2 shall include the                       with section 43.9
 following text: ``120 KIAS                            of the Federal
 Minimum in Icing Flaps Up                             Aviation
 except 110 KIAS if Climbing to                        Regulations (14
 Exit Icing.''.                                        CFR 43.9).
(iii) Placard 3 shall include
 the following text:
 ``Disconnect autopilot at first
 indication of ice accretion.''.
(4) For Cessna Model 208          No later than       The owner/operator
 airplanes and Model 208B          March 27, 2006 (3   holding at least
 airplanes, all serial numbers,    days after March    a private pilot
 equipped with airframe deicing    24, 2006, which     certificate as
 pneumatic boots, that are not     is the effective    authorized by
 currently prohibited from         date of AD 2006-    section 43.7 of
 flight in known or forecast       06-06).             the Federal
 icing:                                                Aviation
(i) Insert the text in Appendix                        Regulations (14
 4 of this AD under the                                CFR 43.7) may
 ``AIRSPEED LIMITATIONS''                              insert the
 paragraph in the LIMITATIONS                          information into
 section of the Cessna Models                          the POH/AFM as
 208 or 208B POH and FAA-                              specified in
 approved AFM..                                        paragraph (h)(4)
(ii) Replace the text in the                           of this AD. You
 KNOWN ICING EQUIPMENT                                 may insert a copy
 SUPPLEMENT S1 under the                               of this AD into
 ``MINIMUM SPEED IN ICING                              the appropriate
 CONDITIONS'' paragraph with the                       sections of the
 text in Appendix 4..                                  POH/AFM to comply
(iii) Insert the following text                        with this action.
 in the LIMITATIONS section of                         Make an entry
 the POH/AFM under the ``OTHER                         into the aircraft
 LIMITATIONS'' paragraph and in                        records showing
 the LIMITATIONS section of the                        compliance with
 KNOWN ICING EQUIPMENT                                 portion of the AD
 SUPPLEMENT S1 under the                               in accordance
 ``AUTOPILOT OPERATION IN ICING                        with section 43.9
 CONDITIONS'' paragraph:                               of the Federal
 ``Disconnect autopilot at first                       Aviation
 indication of ice accretion.''.                       Regulations (14
                                                       CFR 43.9).

[[Page 4668]]

 
(5) For Cessna Model 208          No later than       The owner/operator
 airplanes and Model 208B          March 27, 2006 (3   holding at least
 airplanes, all serial numbers,    days after March    a private pilot
 equipped with airframe deicing    24, 2006, which     certificate as
 pneumatic boots, that are not     is the effective    authorized by
 currently prohibited from         date of AD 2006-    section 43.7 of
 flight in known or forecast       06-06).             the Federal
 icing:                                                Aviation
(i) Replace the text in the                            Regulations (14
 PERFORMANCE section of the                            CFR 43.7) may
 Cessna Models 208 or 208B POH                         insert the
 and FAA-approved AFM KNOWN                            information into
 ICING EQUIPMENT SUPPLEMENT S1                         the POH/AFM as
 under the ``STALL SPEEDS''                            specified in
 paragraph with the text in                            paragraph (h)(5)
 Appendix 5..                                          of this AD. You
(ii) Replace the ``WARNING''                           may insert a copy
 text in the LIMITATIONS section                       of this AD into
 of the Cessna Models 208 or                           the appropriate
 208B POH and FAA-approved AFM                         sections of the
 KNOWN ICING EQUIPMENT                                 POH/AFM to comply
 SUPPLEMENT S1 under                                   with this action.
 ``ENVIRONMENTAL CONDITIONS''                          Make an entry
 with: ``FLIGHT IN THESE                               into the aircraft
 CONDITIONS ARE PROHIBITED.''.                         records showing
(iii) Replace the last two                             compliance with
 sentences in the LIMITATIONS                          portion of the AD
 section of the Cessna Models                          in accordance
 208 or 208B POH and FAA-                              with section 43.9
 approved AFM KNOWN ICING                              of the Federal
 EQUIPMENT SUPPLEMENT S1 under                         Aviation
 ``ENVIRONMENTAL CONDITIONS''                          Regulations (14
 with the following text: ``Exit                       CFR 43.9).
 strategies should be determined
 during pre-flight planning.''.
------------------------------------------------------------------------

Alternative Methods of Compliance (AMOCs)

    (i) The Manager Wichita Aircraft Certification Office (ACO), 
FAA, ATTN: Robert P. Busto, Aerospace Engineer, Wichita Aircraft 
Certification Office, FAA, 1801 Airport Road, 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.

Related Information

    (j) To get copies of the service information referenced in this 
AD, contact: The Cessna Aircraft Company, Product Support, P.O. Box 
7706, Wichita, Kansas 67277. To view the AD docket, go to the Docket 
Management Facility; U.S. Department of Transportation, 400 Seventh 
Street, SW., Nassif Building, Room PL-401, Washington, DC, or on the 
Internet at http://dms.dot.gov. The docket number is Docket No. FAA-
2006-26498; Directorate Identifier 2006-CE-83-AD.

Appendix 1 Retained From AD 2006-06-06

Changes to the Cessna Models 208 or 208B Pilot's Operating Handbook 
(POH) and FAA-Approved Airplane Flight Manual (AFM)

Affected Cessna Models 208 or 208B POH and FAA-Approved AFM

    Insert the following text at the beginning of the KINDS OF 
OPERATION LIMITS paragraph in the LIMITATIONS section of the Cessna 
Models 208 or 208B POH and FAA-approved AFM. This may be done by 
inserting a copy of this AD into the POH/AFM:
    ``Continued flight after encountering moderate or greater icing 
conditions is prohibited. One or more of the following defines 
moderate icing conditions for this airplane:
    Indicated airspeed in level cruise flight at constant power 
decreases by 20 knots. Engine torque required to maintain airspeed 
increases by 400 ft. lbs. Airspeed of 120 KIAS cannot be maintained 
in level flight. An accretion of \1/4\-inch of ice is observed on 
the wing strut.
    Disregard any mention of approval for flight in icing conditions 
within the POH/AFM.''

Appendix 2 Retained From AD 2006-06-06

Changes to the Cessna Models 208 or 208B Pilot's Operating Handbook 
(POH) and FAA-Approved Airplane Flight Manual (AFM)

Affected Cessna Models 208 or 208B POH and FAA-Approved AFM

    Insert the following text in the LIMITATIONS section of the POH 
and FAA-approved AFM KNOWN ICING EQUIPMENT SUPPLEMENT S1, at the 
beginning of the paragraph ``REQUIRED EQUIPMENT.'' This may be done 
by inserting a copy of this AD into the POH/AFM:
    ``Continued flight after encountering moderate or greater icing 
conditions is prohibited. One or more of the following defines 
moderate icing conditions for this airplane:
    Indicated airspeed in level flight at constant power decreases 
by 20 knots. Engine torque required to maintain airspeed increases 
by 400 ft. lbs. Airspeed of 120 KIAS cannot be maintained in level 
flight. An accretion of \1/4\-inch of ice is observed on the wing 
strut.
    Disregard any mention of approval for flight in icing conditions 
within the POH/AFM.''

Appendix 3 Retained From AD 2006-06-06

Cessna Model 208 Airplanes and Model 208B Airplanes, Equipped With 
Airframe Deicing Pneumatic Boots, That Are Not Currently Prohibited 
From Flight in Known or Forecast Icing

    Install a placard with black letters on a white background. The 
placard shall be located on the instrument panel in one of the 
following areas: Under the radio stack, immediately above the 
pilot's flight instruments, or below the pilot's vertical speed 
indicator. Lettering on the placard shall be a minimum \1/8\-inch 
tall and state the following:
    ``Continued flight after encountering moderate or greater icing 
conditions is prohibited. One or more of the following defines 
moderate icing conditions for this airplane:
    Airspeed in level flight at constant power decreases by 20 KIAS. 
Engine torque required to maintain airspeed increases by 400 ft. 
lbs. 120 KIAS cannot be maintained in level flight.
    Ice accretion of \1/4\ inch observed on the wing strut.''

Appendix 4 Retained From AD 2006-06-06

Changes to the Cessna Models 208 or 208B Pilot's Operating Handbook 
(POH) and FAA-Approved Airplane Flight Manual (AFM) Supplement S1

Affected Cessna Models 208 or 208B POH and FAA-Approved AFM and 
FAA-Approved Supplement S1

    Insert the following text into the LIMITATIONS section under the 
``AIRSPEED LIMITATIONS'' paragraph of the Cessna

[[Page 4669]]

Models 208 or 208B POH and FAA-approved AFM, and replace the text in 
the KNOWN ICING EQUIPMENT SUPPLEMENT S1 under the ``MINIMUM SPEED IN 
ICING CONDITIONS'' paragraph with the following text. This may be 
done by inserting a copy of this AD into the POH/AFM:
    ``Minimum airspeed in icing conditions, for all flight phases 
including approach, except takeoff and landing:

Flaps up: 120 KIAS
Flaps 10[deg]: 105 KIAS
Flaps 20[deg]: 95 KIAS

    Exception for flaps up: when climbing to exit icing conditions 
airspeed can be reduced to 110 KIAS minimum.
    Flaps must be extended during all phases (takeoff and landing 
included) at airspeeds below 110 KIAS, except adhere to published 
AFM procedures when operating with ground deicing/anti-icing fluid 
applied.

WARNING

    The aural stall warning system does not function properly in all 
icing conditions and should not be relied upon to provide adequate 
stall warning when in icing conditions.''

    Note: These are minimum speeds for operations in icing 
conditions. Disregard any reference to the original speeds within 
the POH/AFM.

Appendix 5 Retained From AD 2006-06-06

Changes to the Cessna Models 208 or 208B Pilot's Operating Handbook 
(POH) and FAA-Approved Airplane Flight Manual (AFM) Supplement S1

    Replace the text in the PERFORMANCE section of the POH/AFM KNOWN 
ICING EQUIPMENT SUPPLEMENT S1 under the ``STALL SPEEDS'' paragraph 
with the following text:
    ``Ice accumulation on the airframe may result in a 20 KIAS 
increase in stall speed. Either buffet or aural stall warning should 
be treated as an imminent stall.''
    ``WARNING--The aural stall warning system does not function 
properly in all icing conditions and should not be relied upon to 
provide adequate stall warning when in icing conditions.''

    Issued in Kansas City, Missouri, on January 25, 2007.
Kim Smith,
Manager, Small Airplane Directorate, Aircraft Certification Service.

[FR Doc. E7-1604 Filed 1-31-07; 8:45 am]
BILLING CODE 4910-13-P