
[Federal Register: July 29, 2008 (Volume 73, Number 146)]
[Rules and Regulations]               
[Page 43845-43847]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr29jy08-1]                         


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[[Page 43845]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2007-29240; Directorate Identifier 2007-CE-076-AD; 
Amendment 39-15618; AD 2008-15-06]
RIN 2120-AA64

 
Airworthiness Directives; Cessna Aircraft Company Models 175 and 
175A Airplanes

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

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
Cessna Aircraft Company (Cessna) Models 175 and 175A airplanes. This AD 
requires you to check the airplane logbook to determine if the original 
engine mounting brackets have been replaced. If the original engine 
mounting brackets are still installed, this AD requires you to 
repetitively inspect those brackets for cracks and replace any cracked 
engine mounting bracket. After replacing all four original engine 
mounting brackets, no further action will be required by this AD. This 
AD was prompted by a report that the engine became detached from the 
firewall during landing on one of the affected airplanes. We are 
issuing this AD to detect and correct cracks in the engine mounting 
brackets, which could result in failure of the engine mounting bracket. 
This failure could lead to the engine detaching from the firewall.

DATES: This AD becomes effective on September 2, 2008.
    On September 2, 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 
Cessna Aircraft Company, Product Support, P.O. Box 7706, Wichita, 
Kansas 67277; telephone: (316) 517-5800; fax: (316) 942-9006.
    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-2007-29240; 
Directorate Identifier 2007-CE-076-AD.

FOR FURTHER INFORMATION CONTACT: Gary Park, Aerospace Engineer, 1801 
Airport Road, Room 100, Wichita, Kansas 67209; telephone: (316) 946-
4123; fax: (316) 946-4107.

SUPPLEMENTARY INFORMATION:

Discussion

    On March 31, 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 Cessna Models 175 and 175A airplanes. This 
proposal was published in the Federal Register as a notice of proposed 
rulemaking (NPRM) on April 8, 2008 (73 FR 19017). The NPRM proposed to 
require you to check the airplane logbook to determine if the original 
engine mounting brackets have been replaced. If the original engine 
mounting brackets are still installed, the NPRM proposed to require you 
to repetitively inspect those brackets for cracks and replace any 
cracked engine mounting bracket. After replacing all four original 
engine mounting brackets, no further action would be required by the 
NPRM.

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 this AD affects 1,218 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
----------------------------------------------------------------------------------------------------------------
7.5 work-hours x $80 per hour = $600..........  Not applicable..................            $600        $730,800
----------------------------------------------------------------------------------------------------------------

    We estimate the following costs to do any necessary replacements:

------------------------------------------------------------------------
                                                       Total cost per
         Labor cost                Parts cost             airplane
------------------------------------------------------------------------
3 work-hours per bracket x    $200 per bracket. 4   $440 per bracket.
 $80 per hour = $240 per       x $200 = $800 for     $1,760 to replace
 bracket. 4 brackets per       all 4 brackets.       all 4 brackets.
 airplane x $240 per bracket
 = $960.
------------------------------------------------------------------------


[[Page 43846]]

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-2007-29240; Directorate Identifier 2007-CE-076-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:

2008-15-06 Cessna Aircraft Company: Amendment 39-15618; Docket No. 
FAA-2007-29240; Directorate Identifier 2007-CE-076-AD.

Effective Date

    (a) This AD becomes effective on September 2, 2008.

Affected ADs

    (b) None.

Applicability

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

------------------------------------------------------------------------
            Model                Serial Nos.        Year manufactured
------------------------------------------------------------------------
(1) 175......................  55001 through    1958.
                                55703.
(2) 175......................  55704 through    1959.
                                56238.
(3) 175......................  28700A, 626,     1958 and 1959.
                                and 640.
(4) 175A.....................  691, and 56239   1960.
                                through 56777.
------------------------------------------------------------------------

Unsafe Condition

    (d) A report that the engine became unattached from the firewall 
during landing on one of the affected airplanes prompts this AD. We 
are issuing this AD to detect and correct cracks in the engine 
mounting brackets, which could result in failure of the engine 
mounting bracket. This failure could lead to the engine detaching 
from the firewall.

Compliance

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

------------------------------------------------------------------------
           Actions                 Compliance            Procedures
------------------------------------------------------------------------
(1) Check the airplane        Within the next 30    The owner/operator
 logbook to determine if all   days after            holding at least a
 four of the original engine   September 2, 2008     private pilot
 mounting brackets have been   (the effective date   certificate as
 replaced.                     of this AD).          authorized by
                                                     section 43.7 may do
                                                     this action.
(2) If you can positively     Not applicable......  Make an entry into
 determine that all four of                          the aircraft
 the original engine                                 logbook showing
 mounting brackets have been                         compliance with
 replaced, no further action                         this portion of the
 is required.                                        AD in accordance
                                                     with 14 CFR 43.9.
                                                     The owner/operator
                                                     holding at least a
                                                     private pilot
                                                     certificate as
                                                     authorized by
                                                     section 43.7 may do
                                                     this action.
(3) If you cannot positively  Initially inspect     Follow Cessna Single
 determine that all four of    within the next 12    Engine Service
 the original engine           months after          Bulletin SEB07-2,
 mounting brackets have been   September 2, 2008     Revision 2, dated
 replaced, inspect each of     (the effective date   June 18, 2007.
 the upper and lower engine    of this AD). If no
 mounting brackets on both     cracks are found,
 the left and right sides      repetitively
 for cracks as specified in    inspect thereafter
 the service bulletin.         at intervals not to
                               exceed 500 hours
                               time-in-service
                               (TIS) until all
                               four of the
                               original engine
                               mounting brackets
                               are replaced.
(4) If cracks are found in    Before further        Follow Cessna Single
 any of the engine mounting    flight after the      Engine Service
 brackets during any           inspection in which   Bulletin SEB07-2,
 inspection required in        cracks are found.     Revision 2, dated
 paragraph (e)(3) of this      Replacing the         June 18, 2007.
 AD, replace the cracked       cracked engine
 engine mounting bracket(s).   mounting bracket
                               terminates the
                               repetitive
                               inspection required
                               in paragraph (e)(3)
                               of this AD only for
                               the replaced engine
                               mounting bracket.

[[Page 43847]]


(5) To terminate the          At any time before    Follow Cessna Single
 repetitive inspections        or after the          Engine Service
 required in paragraph         initial inspection    Bulletin SEB07-2,
 (e)(3) of this AD, you may    required in           Revision 2, dated
 replace all four original     paragraph (e)(3) of   June 18, 2007.
 engine mounting brackets.     this AD.
(6) Dispose of every          Before further        Not applicable.
 replaced bracket following    flight after the
 14 CFR 43.10, paragraph       engine mounting
 (c)(6), which states the      bracket is removed
 following: ``Mutilation.      for replacement.
 The part may be mutilated
 to deter its installation
 in a type certificated
 product. The mutilation
 must render the part beyond
 repair and incapable of
 being reworked to appear to
 be airworthy''.
------------------------------------------------------------------------

Alternative Methods of Compliance (AMOCs)

    (f) The Manager, Wichita 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: Gary Park, Aerospace Engineer, FAA, Wichita ACO, 1801 Airport 
Road, Room 100, Wichita, Kansas 67209; telephone: 316-946-4123; fax: 
316-946-4107; e-mail address: gary.park@faa.gov. 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 Cessna Single Engine Service Bulletin SEB07-2, 
Revision 2, dated June 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 
Cessna Aircraft Company, Product Support, P.O. Box 7706, Wichita, 
Kansas 67277.
    (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 15, 2008.
Kim Smith,
Manager, Small Airplane Directorate, Aircraft Certification Service.
 [FR Doc. E8-16583 Filed 7-28-08; 8:45 am]

BILLING CODE 4910-13-P
