Airworthiness Directives; Cirrus Design Corporation Model SR20 Airplanes, 13157-13159 [E8-4864]

Download as PDF 13157 Proposed Rules Federal Register Vol. 73, No. 49 Wednesday, March 12, 2008 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. NUCLEAR REGULATORY COMMISSION 10 CFR Part 50 RIN 3150–AI10 Enhancements to Emergency Preparedness Regulations Nuclear Regulatory Commission. ACTION: Availability of preliminary draft rule language. rmajette on PROD1PC64 with PROPOSALS AGENCY: SUMMARY: The Nuclear Regulatory Commission (NRC) staff is making available preliminary draft rule language that would constitute amendments to its regulations on emergency preparedness (EP). The release of the preliminary draft requirements is intended to inform stakeholders of the current status of the NRC’s activities on its EP rulemaking. The goal of this rulemaking is to enhance EP regulations based on operating experience and the postSeptember 11, 2001, threat environment. The Commission has not reviewed the preliminary draft rule language, and this preliminary draft rule language may be subject to significant revisions during the rulemaking process. DATES: The NRC is not soliciting formal public comments on the preliminary draft rule language at this time. Comments can be submitted for NRC consideration in the development of the proposed rule through the www.regulations.gov Web site until July 1st, 2008. There will be an opportunity for formal public comment on the proposed rule when the notice of proposed rulemaking is published in the Federal Register. ADDRESSES: The preliminary draft rule language can be viewed and downloaded electronically via the Federal rulemaking Web site at www.regulations.gov and can be found by searching under Docket ID no. NRC– 2008–0122. Along with any publicly available documents related to this VerDate Aug<31>2005 15:18 Mar 11, 2008 Jkt 214001 rulemaking, the draft information may be viewed electronically on public computers in the NRC’s Public Document Room (PDR), located at One White Flint North, 11555 Rockville Pike, Rockville, Maryland 20852, Room O–1 F21, and open to the public on Federal workdays from 7:45 a.m. until 4:15 p.m. The PDR reproduction contractor will make copies of documents for a fee. FOR FURTHER INFORMATION CONTACT: Lauren Quinones-Navarro, Office of Nuclear Reactor Regulation, U.S. Nuclear Regulatory Commission, Washington, DC 20555–0001, telephone (301) 415–2007, e-mail, lqn@nrc.gov; or Kathryn Brock, Office of Nuclear Security and Incident Response, U.S. Nuclear Regulatory Commission, Washington, DC 20555–0001, telephone (301) 415–2015, e-mail, kmb3@nrc.gov. SUPPLEMENTARY INFORMATION: The NRC staff is making a preliminary version of the draft proposed rule language available to inform stakeholders of the current status of the NRC’s EP rulemaking effort. The staff recognizes that security-based events differ from accidental events at nuclear power plants and that EP regulations and guidance could be enhanced to better reflect the security elements in these regulations. Additionally, the NRC staff has determined that other aspects of the EP regulations could be enhanced based on years of EP inspection program implementation and stakeholder input. The rulemaking would codify securitybased response elements of NRC Bulletin 2005–02, ‘‘Emergency Preparedness and Response Actions for Security-Based Events.’’ It would also enhance other key EP regulations in the areas of NRC-evaluated biennial exercises, emergency response organization staffing, emergency response facilities and equipment, and emergency plan maintenance and implementation. The Commission paper (SECY–06– 0200) which provided the results of the NRC staff review of the NRC’s EP program and its recommendations regarding proposed enhancements to the EP regulations and guidance may be found at the NRC public Web site at https://www.nrc.gov/reading-rm/doccollections/commission/secys/2006/ secy2006-0200/2006-0200scy.pdf. The Rulemaking Plan concerning the revision of EP regulations and guidance PO 00000 Frm 00001 Fmt 4702 Sfmt 4702 may be found at https://www.nrc.gov/ about-nrc/regulatory/rulemaking/ rulemaking-plans.html. Dated at Rockville, Maryland, this 29th day of February, 2008. For the Nuclear Regulatory Commission. Arlon Costa, Chief, Financial Policy and Rulemaking Branch, Division of Policy and Rulemaking, Office of Nuclear Reactor Regulation. [FR Doc. E8–4899 Filed 3–11–08; 8:45 am] BILLING CODE 7590–01–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2008–0284; Directorate Identifier 2008–CE–006–AD] RIN 2120–AA64 Airworthiness Directives; Cirrus Design Corporation Model SR20 Airplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Notice of proposed rulemaking (NPRM). AGENCY: SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Cirrus Design Corporation (CDC) Model SR20 airplanes. This proposed AD would require an inspection and replacement as necessary of the heat exchanger. This proposed AD results from the discovery of engine exhaust fumes in the cabin of CDC Model SR20 airplanes. We are proposing this AD to detect and correct leaks in the exhaust system, which could result in exhaust gases leaking into the cabin heating system. This condition could lead to carbon monoxide in the cabin and incapacitation of the pilot. DATES: We must receive comments on this proposed AD by May 12, 2008. ADDRESSES: Use one of the following addresses to comment on this proposed AD: • Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments. • Fax: (202) 493–2251. • Mail: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room E:\FR\FM\12MRP1.SGM 12MRP1 13158 Federal Register / Vol. 73, No. 49 / Wednesday, March 12, 2008 / Proposed Rules W12–140, 1200 New Jersey Avenue, SE., Washington, DC 20590. • Hand Delivery: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this proposed AD, contact Cirrus Design Corporation, 4515 Taylor Circle, Duluth, Minnesota 55811, telephone: (218) 788– 3000. FOR FURTHER INFORMATION CONTACT: Michael Downs, Aerospace Engineer, 2300 East Devon Avenue, Room 107, Des Plaines, Illinois 60018; telephone: (847) 294–7870; fax: (847) 294–7834. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments regarding this proposed AD. Send your comments to an address listed under the ADDRESSES section. Include the docket number, ‘‘FAA–2008–0284; Directorate Identifier 2008–CE–006–AD’’ at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of the proposed AD. We will consider all comments received by the closing date and may amend the proposed AD in light of those comments. We will post all comments we receive, without change, to https:// www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive concerning this proposed AD. Relevant Service Information We have reviewed Cirrus Service Bulletin SB 2X–78–07 R1, Revision 1, dated December 18, 2007. The service information describes procedures for: • Pressurization check of the heat exchanger; • Installation of an improved heat exchanger if broken welds or exhaust leaks are found; and • Repetitive 100-hour pressurization checks. FAA’s Determination and Requirements of the Proposed AD Discussion We received a report from the operator of a fleet of CDC Model SR20 airplanes that an exhaust leak was discovered in the cabin on one of the fleet airplanes. Failure of a spot weld that secures the heater shroud to the muffler caused the exhaust leak. Inspection of the operator’s total fleet of 40 airplanes found 24 more airplanes with defective spot welds. One of these defective welds was leaking exhaust into the cabin heating system. This condition, if not corrected, could lead to carbon monoxide in the cabin and incapacitation of the pilot. We are proposing this AD because we evaluated all information and determined the unsafe condition described previously is likely to exist or develop on other products of the same type design. This proposed AD would require an inspection and replacement as necessary of the exhaust system. Costs of Compliance We estimate that this proposed AD would affect 713 airplanes in the U.S. registry. We estimate the following costs to do the proposed inspection: Labor cost Parts cost Total cost per airplane Total cost on U.S. operators 1 work-hour × $80 per hour = $80 .............................................................................................. $0 $80 $57,040 We estimate the following costs to do any necessary replacement that would be required based on the results of the proposed inspection. We have no way of determining the number of airplanes that may need this replacement: Labor cost Parts cost Total cost per airplane 1 work-hour × $80 per hour = $80 .......................................................................................................................... $848 $928 Warranty credit will be given to the extent specified in Cirrus Service Bulletin SB 2X–78–07 R1, Revision 1, dated December 18, 2007. rmajette on PROD1PC64 with PROPOSALS 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 VerDate Aug<31>2005 15:18 Mar 11, 2008 Jkt 214001 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. PO 00000 Frm 00002 Fmt 4702 Sfmt 4702 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 E:\FR\FM\12MRP1.SGM 12MRP1 Federal Register / Vol. 73, No. 49 / Wednesday, March 12, 2008 / Proposed Rules received, and other information on the Internet at https://www.regulations.gov; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The Docket Office (telephone (800) 647–5527) is located at the street address stated in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Safety. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 14 CFR part 39 as follows: Applicability PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 13159 [Amended] 2. The FAA amends § 39.13 by adding the following new AD: Cirrus Design Corporation: Docket No. FAA– 2008–0284; Directorate Identifier 2008– CE–006–AD. Comments Due Date (a) We must receive comments on this airworthiness directive (AD) action by May 12, 2008. Affected ADs (b) None. (c) This AD applies to Model SR20 airplanes, serial numbers 1005 through 1815, that are certificated in any category. Unsafe Condition (d) This AD results from the discovery of engine exhaust fumes in the cabin of Cirrus Design Corporation Model SR20 airplanes. We are proposing this AD to detect and correct leaks in the exhaust system, which could result in exhaust gases leaking into the cabin heating system. This condition could lead to carbon monoxide in the cabin and incapacitation of the pilot. Compliance (e) To address this problem, you must do the following, unless already done: Actions Compliance Procedures (1) Perform a pressurization check on the exhaust system. Initially within the next 25 hours time-in-service (TIS) after the effective date of this AD or within the next 3 months after the effective date of this AD, whichever occurs first. Repetitively thereafter at intervals not to exceed every 100 hours TIS. Before further flight after the effective date of this AD. Follow Cirrus Service Bulletin SB 2X–78–07 R1, Revision 1, dated December 18, 2007. (2) If the exhaust system is found defective during any check required in paragraph (e)(1) of this AD or an exhaust odor is detected inside the airplane cabin, replace the heat exchanger weldment and shroud with new improved heat exchanger weldment and new shroud. Alternative Methods of Compliance (AMOCs) (f) The Manager, Chicago Aircraft Certification Office (ACO), FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Michael Downs, Aerospace Engineer, Chicago ACO, 2300 East Devon Avenue, Room 107, Des Plaines, Illinois 60018; telephone: (847) 294–7870; fax: (847) 294– 7834. 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. rmajette on PROD1PC64 with PROPOSALS Related Information (g) To get copies of the service information referenced in this AD, contact Cirrus Design Corporation, 4515 Taylor Circle, Duluth, Minnesota 55811, telephone: (218) 788–3000. To view the AD docket, go to U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue, SE., Washington, DC 20590, or on the Internet at https://www.regulations.gov. VerDate Aug<31>2005 15:18 Mar 11, 2008 Jkt 214001 Issued in Kansas City, Missouri, on March 4, 2008. David R. Showers, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. E8–4864 Filed 3–11–08; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 71 [Docket No. FAA–2008–0111; Airspace Docket No. 08–AAL–6] Proposed Revocation of Area Navigation Jet Routes J–889R and J– 996R; Alaska Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: SUMMARY: The FAA is proposing to remove two Area Navigation (RNAV) Jet Routes designated as Jet Route J–888R and J–996R in Alaska. These routes transiting between Anchorage, and Bethel, AK, and Cape Newenham, and Anchorage, AK, respectively, are no PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 Follow Cirrus Service Bulletin SB 2X–78–07 R1, Revision 1, dated December 18, 2007. longer required for routings provided by the Anchorage Air Route Traffic Control Center (ARTCC). DATES: Comments must be received on or before April 28, 2008. ADDRESSES: Send comments on this proposal to the, U.S. Department of Transportation, Docket Operations, M– 30, 1200 New Jersey Avenue, SE., West Building Ground Floor, Room W12–140, Washington, DC 20590–0001; telephone: (202) 366–9826. You must identify FAA Docket No. FAA–2008–0111 and Airspace Docket No. 08–AAL–6 at the beginning of your comments. You may also submit comments through the Internet at https://www.regulations.gov. FOR FURTHER INFORMATION CONTACT: Ken McElroy, Airspace and Rules Group, Office of System Operations Airspace and AIM, Federal Aviation Administration, 800 Independence Avenue, SW., Washington, DC 20591; telephone: (202) 267–8783. SUPPLEMENTARY INFORMATION: Comments Invited Interested parties are invited to participate in this proposed rulemaking by submitting such written data, views, or arguments, as they may desire. E:\FR\FM\12MRP1.SGM 12MRP1

Agencies

[Federal Register Volume 73, Number 49 (Wednesday, March 12, 2008)]
[Proposed Rules]
[Pages 13157-13159]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-4864]


=======================================================================
-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-0284; Directorate Identifier 2008-CE-006-AD]
RIN 2120-AA64


Airworthiness Directives; Cirrus Design Corporation Model SR20 
Airplanes

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

ACTION: Notice of proposed rulemaking (NPRM).

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

SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain Cirrus Design Corporation (CDC) Model SR20 airplanes. This 
proposed AD would require an inspection and replacement as necessary of 
the heat exchanger. This proposed AD results from the discovery of 
engine exhaust fumes in the cabin of CDC Model SR20 airplanes. We are 
proposing this AD to detect and correct leaks in the exhaust system, 
which could result in exhaust gases leaking into the cabin heating 
system. This condition could lead to carbon monoxide in the cabin and 
incapacitation of the pilot.

DATES: We must receive comments on this proposed AD by May 12, 2008.

ADDRESSES: Use one of the following addresses to comment on this 
proposed AD:
     Federal eRulemaking Portal: Go to https://
www.regulations.gov. Follow the instructions for submitting comments.
     Fax: (202) 493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room

[[Page 13158]]

W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590.
     Hand Delivery: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays.
    For service information identified in this proposed AD, contact 
Cirrus Design Corporation, 4515 Taylor Circle, Duluth, Minnesota 55811, 
telephone: (218) 788-3000.

FOR FURTHER INFORMATION CONTACT: Michael Downs, Aerospace Engineer, 
2300 East Devon Avenue, Room 107, Des Plaines, Illinois 60018; 
telephone: (847) 294-7870; fax: (847) 294-7834.

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments regarding this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include the docket number, ``FAA-
2008-0284; Directorate Identifier 2008-CE-006-AD'' at the beginning of 
your comments. We specifically invite comments on the overall 
regulatory, economic, environmental, and energy aspects of the proposed 
AD. We will consider all comments received by the closing date and may 
amend the proposed AD in light of those comments.
    We will post all comments we receive, without change, to https://
www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive concerning this proposed AD.

Discussion

    We received a report from the operator of a fleet of CDC Model SR20 
airplanes that an exhaust leak was discovered in the cabin on one of 
the fleet airplanes. Failure of a spot weld that secures the heater 
shroud to the muffler caused the exhaust leak. Inspection of the 
operator's total fleet of 40 airplanes found 24 more airplanes with 
defective spot welds. One of these defective welds was leaking exhaust 
into the cabin heating system.
    This condition, if not corrected, could lead to carbon monoxide in 
the cabin and incapacitation of the pilot.

Relevant Service Information

    We have reviewed Cirrus Service Bulletin SB 2X-78-07 R1, Revision 
1, dated December 18, 2007. The service information describes 
procedures for:
     Pressurization check of the heat exchanger;
     Installation of an improved heat exchanger if broken welds 
or exhaust leaks are found; and
     Repetitive 100-hour pressurization checks.

FAA's Determination and Requirements of the Proposed AD

    We are proposing this AD because we evaluated all information and 
determined the unsafe condition described previously is likely to exist 
or develop on other products of the same type design. This proposed AD 
would require an inspection and replacement as necessary of the exhaust 
system.

Costs of Compliance

    We estimate that this proposed AD would affect 713 airplanes in the 
U.S. registry.
    We estimate the following costs to do the proposed inspection:

----------------------------------------------------------------------------------------------------------------
                                                                                 Total cost per   Total cost on
                          Labor cost                              Parts cost        airplane     U.S.  operators
----------------------------------------------------------------------------------------------------------------
1 work-hour x $80 per hour = $80.............................              $0              $80          $57,040
----------------------------------------------------------------------------------------------------------------

    We estimate the following costs to do any necessary replacement 
that would be required based on the results of the proposed inspection. 
We have no way of determining the number of airplanes that may need 
this replacement:

------------------------------------------------------------------------
                                                          Total cost per
              Labor cost                   Parts cost        airplane
------------------------------------------------------------------------
1 work-hour x $80 per hour = $80......            $848             $928
------------------------------------------------------------------------

    Warranty credit will be given to the extent specified in Cirrus 
Service Bulletin SB 2X-78-07 R1, Revision 1, dated December 18, 2007.

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

[[Page 13159]]

received, and other information on the Internet at https://
www.regulations.gov; or in person at the Docket Management Facility 
between 9 a.m. and 5 p.m., Monday through Friday, except Federal 
holidays. The Docket Office (telephone (800) 647-5527) is located at 
the street address stated in the ADDRESSES section. Comments will be 
available in the AD docket shortly after receipt.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

    1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

    2. The FAA amends Sec.  39.13 by adding the following new AD:

Cirrus Design Corporation: Docket No. FAA-2008-0284; Directorate 
Identifier 2008-CE-006-AD.

Comments Due Date

    (a) We must receive comments on this airworthiness directive 
(AD) action by May 12, 2008.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Model SR20 airplanes, serial numbers 1005 
through 1815, that are certificated in any category.

Unsafe Condition

    (d) This AD results from the discovery of engine exhaust fumes 
in the cabin of Cirrus Design Corporation Model SR20 airplanes. We 
are proposing this AD to detect and correct leaks in the exhaust 
system, which could result in exhaust gases leaking into the cabin 
heating system. This condition could lead to carbon monoxide in the 
cabin and incapacitation of the pilot.

Compliance

    (e) To address this problem, you must do the following, unless 
already done:

------------------------------------------------------------------------
           Actions                 Compliance            Procedures
------------------------------------------------------------------------
(1) Perform a pressurization  Initially within the  Follow Cirrus
 check on the exhaust system.  next 25 hours time-   Service Bulletin SB
                               in-service (TIS)      2X-78-07 R1,
                               after the effective   Revision 1, dated
                               date of this AD or    December 18, 2007.
                               within the next 3
                               months after the
                               effective date of
                               this AD, whichever
                               occurs first.
                               Repetitively
                               thereafter at
                               intervals not to
                               exceed every 100
                               hours TIS.
(2) If the exhaust system is  Before further        Follow Cirrus
 found defective during any    flight after the      Service Bulletin SB
 check required in paragraph   effective date of     2X-78-07 R1,
 (e)(1) of this AD or an       this AD.              Revision 1, dated
 exhaust odor is detected                            December 18, 2007.
 inside the airplane cabin,
 replace the heat exchanger
 weldment and shroud with
 new improved heat exchanger
 weldment and new shroud.
------------------------------------------------------------------------

Alternative Methods of Compliance (AMOCs)

    (f) The Manager, Chicago Aircraft Certification Office (ACO), 
FAA, has the authority to approve AMOCs for this AD, if requested 
using the procedures found in 14 CFR 39.19. Send information to 
ATTN: Michael Downs, Aerospace Engineer, Chicago ACO, 2300 East 
Devon Avenue, Room 107, Des Plaines, Illinois 60018; telephone: 
(847) 294-7870; fax: (847) 294-7834. Before using any approved AMOC 
on any airplane to which the AMOC applies, notify your appropriate 
principal inspector (PI) in the FAA Flight Standards District Office 
(FSDO), or lacking a PI, your local FSDO.

Related Information

    (g) To get copies of the service information referenced in this 
AD, contact Cirrus Design Corporation, 4515 Taylor Circle, Duluth, 
Minnesota 55811, telephone: (218) 788-3000. To view the AD docket, 
go to U.S. Department of Transportation, Docket Operations, M-30, 
West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue, 
SE., Washington, DC 20590, or on the Internet at https://
www.regulations.gov.

    Issued in Kansas City, Missouri, on March 4, 2008.
David R. Showers,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E8-4864 Filed 3-11-08; 8:45 am]
BILLING CODE 4910-13-P
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