
[Federal Register: July 10, 2008 (Volume 73, Number 133)]
[Rules and Regulations]               
[Page 39583-39585]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr10jy08-8]                         

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2007-28245; Directorate Identifier 2007-CE-047-AD; 
Amendment 39-15608; AD 2008-14-13]
RIN 2120-AA64

 
Airworthiness Directives; Cirrus Design Corporation Model SR20 
and SR22 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) Models SR20 and SR22 airplanes. This AD 
requires you to replace the cabin door rod ends with new parts 
including a redesigned non-binding hinge pin that replaces the existing 
pin at the upper door hinge. This AD results from two known occurrences 
of in-flight cabin door separation (one total separation and one 
retained by the door strut). The rod ends, a component of the door 
hinges, may fail and result in a door separation from the airplane 
while in flight. We are issuing this AD to prevent in-flight failure of 
the cabin door, which

[[Page 39584]]

could result in door separation from the airplane.

DATES: This AD becomes effective on August 14, 2008.
    On August 14, 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) 727-2737; Internet address: www.cirrusdesign.com.
    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-2007-28245; 
Directorate Identifier 2007-CE-047-AD.

FOR FURTHER INFORMATION CONTACT: Wess Rouse, Aerospace Engineer, 
Chicago Aircraft Certification Office (ACO), 2300 East Devon Avenue, 
Room 107, Des Plaines, Illinois 60018; telephone: (847) 294-8113; fax: 
(847) 294-7834.

SUPPLEMENTARY INFORMATION:

Discussion

    On March 26, 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 certain SR20 and SR22 airplanes. This proposal was 
published in the Federal Register as a supplemental notice of proposed 
rulemaking (NPRM) on April 2, 2008 (73 FR 17935). The NPRM proposed to 
replace the cabin door rod ends with new parts including a redesigned 
non-binding hinge pin that replaces the existing pin at the upper door 
hinge.

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:
     Are consistent with the intent that was proposed in the 
NPRM for correcting the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.

Costs of Compliance

    We estimate that the AD affects 2,308 airplanes in the U.S. 
registry.
    The costs vary from 3.5 work-hours to incorporate Cirrus Kit 70186-
004 and 2.5 work-hours to incorporate Cirrus Kit 70186-005. Parts cost 
for either kit is $270. For the purposes of this AD, we will use 3.5 
work-hours for all airplanes. Based on this, the cost of this AD is:

------------------------------------------------------------------------
                                                 Total cost
              Labor cost                Parts       per      Total fleet
                                         cost     airplane       cost
------------------------------------------------------------------------
3.5 work-hours x $80 per hour = $280.     $270         $550   $1,269,400
------------------------------------------------------------------------


    Note: CDC will provide warranty credit to the extent noted in 
CDC Service Bulletin 2X-52-07 R4, dated January 24, 2008.

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 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-2007-28245; Directorate Identifier 2007-CE-047-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:

2008-14-13 Cirrus Design Corporation: Amendment 39-15608; Docket No. 
FAA-2007-28245; Directorate Identifier 2007-CE-047-AD.

Effective Date

    (a) This AD becomes effective on August 14, 2008.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to the following airplane models and serial 
numbers that are certificated in any category:

------------------------------------------------------------------------
                  Models                             Serial Nos.
------------------------------------------------------------------------
SR20......................................  1423 through 1906.
SR22......................................  0795 and 0820 through 2912.
------------------------------------------------------------------------


[[Page 39585]]

Unsafe Condition

    (d) This AD results from two known occurrences of in-flight 
cabin door separation (one total separation and one retained by the 
door strut). We are issuing this AD to prevent in-flight failure of 
the cabin door, which could result in door separation from the 
airplane.

Compliance

    (e) Unless already done, within the next 50 hours time-in-
service (TIS) after August 14, 2008 (the effective date of this AD) 
or within 180 days after August 14, 2008 (the effective date of this 
AD), whichever occurs first, following Cirrus Design Corporation 
Service Bulletin SB 2X-52-07 R4, dated January 24, 2008, do one of 
the following:
    (1) If threaded sleeve is installed at the cabin door rod end, 
install cabin door rod end Kit 70186-004.
    (2) If threaded sleeve is not installed at the cabin door rod 
end, install cabin door rod end Kit 70186-005.

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: Wess Rouse, Aerospace Engineer, Chicago ACO, 2300 East Devon 
Avenue, Room 107, Des Plaines, Illinois 60018; telephone: (847) 294-
8113; 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 the 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://
dms.dot.gov. The docket number is Docket No. FAA-2007-28245; 
Directorate Identifier 2007-CE-047-AD.

Material Incorporated by Reference

    (h) You must use Cirrus Design Corporation Service Bulletin SB 
2X-52-07 R4, dated January 24, 2008, 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) 727-2737; Internet address: 
www.cirrusdesign.com.
    (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 July 1, 2008.
John Colomy,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
 [FR Doc. E8-15474 Filed 7-9-08; 8:45 am]

BILLING CODE 4910-13-P
