Airworthiness Directives; Cirrus Design Corporation Model SR20 Airplanes

[Federal Register Volume 73, Number 106 (Monday, June 2, 2008)]
[Rules and Regulations]
[Pages 31353-31354]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E8-12047]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-0284; Directorate Identifier 2008-CE-006-AD; 
Amendment 39-15541; AD 2008-11-18]
RIN 2120-AA64


Airworthiness Directives; Cirrus Design Corporation Model SR20 
Airplanes

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

ACTION: Final rule.

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SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
Cirrus Design Corporation (CDC) Model SR20 airplanes. This AD requires 
you to perform an inspection and replacement as necessary of the heat 
exchanger. This AD results from the discovery of engine exhaust fumes 
in the cabin of CDC Model SR20 airplanes. We are issuing 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: This AD becomes effective on July 7, 2008.
    On July 7, 2008, the Director of the Federal Register approved the 
incorporation by reference of certain publications listed in this AD.

ADDRESSES: For service information identified 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 
http://www.regulations.gov. The docket number is FAA-2008-0284; 
Directorate Identifier 2008-CE-006-AD.

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

SUPPLEMENTARY INFORMATION: 

Discussion

    On March 4, 2008, we issued a proposal to amend part 39 of the 
Federal Aviation Regulations (14 CFR part 39) to include an AD that 
would apply to SR20 airplanes. This proposal was published in the 
Federal Register as a notice of proposed rulemaking (NPRM) on March 12, 
2008 (73 FR 13157). The NPRM proposed to require an inspection and 
replacement as necessary of the heat exchanger. This AD results from 
the discovery of engine exhaust fumes in the cabin of CDC Model SR20 
airplanes. We are issuing 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.

Comments

    We provided the public the opportunity to participate in developing 
this AD. We received no comments on the proposal or on the 
determination of the cost to the public.

Conclusion

    We have carefully reviewed the available data and determined that 
air safety and the public interest require adopting the AD as proposed 
except for minor editorial corrections. We have determined that these 
minor corrections:
    <bullet> Are consistent with the intent that was proposed in the 
NPRM for correcting the unsafe condition; and
    <bullet> Do not add any additional burden upon the public than was 
already proposed in the NPRM.

Costs of Compliance

    We estimate that this AD affects 713 airplanes in the U.S. 
registry.
    We estimate the following costs to do the 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,

[[Page 31354]]

``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 AD.

Regulatory Findings

    We have determined that this AD will not have federalism 
implications under Executive Order 13132. This AD will 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 this AD:
    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 summary of the costs to comply with this AD (and 
other information as included in the Regulatory Evaluation) and placed 
it in the AD Docket. You may get a copy of this summary by sending a 
request to us at the address listed under ADDRESSES. Include ``Docket 
No. FAA-2008-0284; Directorate Identifier 2008-CE-006-AD'' in your 
request.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

0
Accordingly, under the authority delegated to me by the Administrator, 
the Federal Aviation Administration amends part 39 of the Federal 
Aviation Regulations (14 CFR part 39) as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
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]

0
2. FAA amends Sec.  39.13 by adding the following new AD:

2008-11-18 Cirrus Design Corporation: Amendment 39-15541; Docket No. 
FAA-2008-0284; Directorate Identifier 2008-CE-006-AD.

Effective Date

    (a) This AD becomes effective on July 7, 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 issuing 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
 inspection/check on the       next 25 hours time-   Service Bulletin SB
 exhaust system.               in-service (TIS)      2X-78-07 R1,
                               after July 7, 2008    Revision 1, dated
                               (the effective date   December 18, 2007.
                               of this AD) or
                               within the next 3
                               months after July
                               7, 2008 (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
 inspection/check required     inspection/check in   2X-78-07 R1,
 in paragraph (e)(1) of this   which the exhaust     Revision 1, dated
 AD or an exhaust odor is      system is found       December 18, 2007.
 detected inside the           defective or an
 airplane cabin, replace the   exhaust odor is
 heat exchanger weldment and   detected.
 shroud with new improved
 heat exchanger weldment and
 new shroud.
------------------------------------------------------------------------


    Note: The replacement of the heat exchanger weldment and shroud 
may be done instead of the initial inspection but does not eliminate 
the 100-hour repetitive inspection.

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.

Material Incorporated by Reference

    (g) You must use Cirrus Service Bulletin SB 2X-78-07 R1, 
Revision 1, dated December 18, 2007, to do the actions required by 
this AD, unless the AD specifies otherwise.
    (1) The Director of the Federal Register approved the 
incorporation by reference of this service information under 5 
U.S.C. 552(a) and 1 CFR part 51.
    (2) For service information identified in this AD, contact 
Cirrus Design Corporation, 4515 Taylor Circle, Duluth, Minnesota 
55811, telephone: (218) 788-3000.
    (3) You may review copies at the FAA, Central Region, Office of 
the Regional Counsel, 901 Locust, Kansas City, Missouri 64106; or at 
the National Archives and Records Administration (NARA). For 
information on the availability of this material at NARA, call 202-
741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

    Issued in Kansas City, Missouri, on May 22, 2008.
David R. Showers,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E8-12047 Filed 5-30-08; 8:45 am]
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