Document ID: FAA-2008-0426-0004
Agency: faa
Document Type: Rule
Title: Airworthiness Directives; MORAVAN a.s. Model Z-143L Airplanes
Posted Date: 2008-06-11T04:00Z

[Federal Register: June 11, 2008 (Volume 73, Number 113)]
[Rules and Regulations]               
[Page 33000-33002]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr11jn08-8]                         

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-0426 Directorate Identifier 2008-CE-016-AD; 
Amendment 39-15549; AD 2008-12-06]
RIN 2120-AA64

 
Airworthiness Directives; MORAVAN a.s. Model Z-143L 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 the 
products listed above. This AD results from mandatory continuing 
airworthiness information (MCAI) issued by an aviation authority of 
another country to identify and correct an unsafe condition on an 
aviation product. The MCAI describes the unsafe condition as:

    Vortex inserts are used inside the heat exchanger of the 
carburettor heating system. Up to serial number (s/n) 0044 inclusive 
those inserts have been produced from aluminium alloy which has been 
found to be susceptible of cracks. As a consequence, if left 
uncorrected some loose parts could migrate in the induction system, 
reduce the air flow through the carburettor's venturi and lead to a 
loss of engine power.
    From s/n 0045 onwards vortex inserts have been produced from 
stainless steel.

We are issuing this AD to require actions to correct the unsafe 
condition on these products.

DATES: This AD becomes effective July 16, 2008.
    On July 16, 2008, the Director of the Federal Register approved the 
incorporation by reference of certain publications listed in this AD.

ADDRESSES: You may examine the AD docket on the Internet at http://
www.regulations.gov or in person at Document Management Facility, U.S. 
Department of Transportation, Docket Operations, M-30, West Building 
Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 
20590.

FOR FURTHER INFORMATION CONTACT: Doug Rudolph, Aerospace Engineer, FAA, 
Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 
64106; telephone: (816) 329-4059; fax: (816) 329-4090.

SUPPLEMENTARY INFORMATION: 

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to include an AD that would apply to the specified products. 
That NPRM was published in the Federal Register on April 11, 2008 (73 
FR 19766). That NPRM proposed to correct an unsafe condition for the 
specified products. The MCAI states:

    Vortex inserts are used inside the heat exchanger of the 
carburettor heating system. Up to serial number (s/n) 0044 inclusive 
those inserts have been produced from aluminium alloy which has been 
found to be susceptible of cracks. As a consequence, if left 
uncorrected some loose parts could migrate in the induction system, 
reduce the air flow through the carburettor's venturi and lead to a 
loss of engine power.
    From s/n 0045 onwards vortex inserts have been produced from 
stainless steel.

Comments

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

Conclusion

    We reviewed the available data and determined that air safety and 
the public interest require adopting the AD as proposed.

Differences Between This AD and the MCAI or Service Information

    We have reviewed the MCAI and related service information and, in 
general, agree with their substance. But we might have found it 
necessary to use different words from those in the MCAI to ensure the 
AD is clear for U.S. operators and is enforceable. In making these 
changes, we do not intend to differ substantively from the information 
provided in the MCAI and related service information.
    We might also have required different actions in this AD from those 
in the MCAI in order to follow FAA policies. Any such differences are 
highlighted in a Note within the AD.

Costs of Compliance

    Based on the service information, we estimate that this AD will 
affect 7 products of U.S. registry. We also estimate that it will take 
about 6 work-hours per product to comply with basic requirements of 
this AD. The average labor rate is $80 per work-hour. Required parts 
will cost about $100 per product.
    Based on these figures, we estimate the cost of this AD to the U.S. 
operators to be $4,060 or $580 per product.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I,

[[Page 33001]]

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 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 this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866;
    (2) Is not a ``significant rule'' under 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 AD and placed it in the AD Docket.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://
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 AD docket contains the NPRM, the regulatory evaluation, 
any comments received, and other information. The street address for 
the Docket Office (telephone (800) 647-5527) is 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, Incorporation by 
reference, Safety.

Adoption of the Amendment

0
Accordingly, under the authority delegated to me by the Administrator, 
the FAA amends 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. The FAA amends Sec.  39.13 by adding the following new AD:

2008-12-06 Moravan a.s.: Amendment 39-15549; Docket No. FAA-2008-
0426; Directorate Identifier 2008-CE-016-AD.

Effective Date

    (a) This airworthiness directive (AD) becomes effective July 16, 
2008.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Model Z-143L airplanes, all serial 
numbers (SNs), certificated in any category.

Subject

    (d) Air Transport Association of America (ATA) Code 75: Engine 
Air.

Reason

    (e) The mandatory continuing airworthiness information (MCAI) 
states:
    Vortex inserts are used inside the heat exchanger of the 
carburetor heating system. Up to serial number (s/n) 0044 inclusive 
those inserts have been produced from aluminium alloy which has been 
found to be susceptible of cracks. As a consequence, if left 
uncorrected some loose parts could migrate in the induction system, 
reduce the air flow through the carburetor's venturi and lead to a 
loss of engine power.
    From s/n 0045 onwards vortex inserts have been produced from 
stainless steel.
    To address this unsafe condition, this Airworthiness Directive 
(AD) mandates initial inspections of the heat exchanger vortex 
inserts and replacement of the aluminium inserts by stainless steel 
ones if any damage is found; and recurrent inspections to be done as 
incorporated in the Revision of Airplane Maintenance Manual.

Actions and Compliance

    (f) Unless already done, do the following actions:
    (1) For all serial numbers (SNs) through SN 0044:
    (i) Before further flight after July 16, 2008 (the effective 
date of this AD), inspect the vortex inserts inside the carburetor 
heating system heat exchanger for cracks and/or loose or missing 
rivets following paragraph 8 of Moravan Aviation s.r.o. Mandatory 
Service Bulletin Z143L/31a, dated June 8, 2007.
    (ii) Before further flight, if as a result of the inspection 
required by paragraph (f)(1)(i) of this AD, you find any cracks and/
or loose or missing rivets for the vortex inserts, replace all 
vortex inserts with new vortex inserts made from stainless steel 
following paragraph 8 of Moravan Aviation s.r.o. Mandatory Service 
Bulletin Z143L/31a, dated June 8, 2007.
    (2) For SN 0045 and greater: Within 110 hours time-in-service 
(TIS) after July 16, 2008 (the effective date of this AD) or within 
60 days after July 16, 2008 (the effective date of this AD), 
whichever occurs first, inspect the vortex inserts inside the 
carburetor heating system heat exchanger following new instructions 
introduced by new pages 05-28, 75-7, 75-7A, and 75-8 of ZLIN Z 143 L 
Airplane Maintenance Manual, Revision No. 9, dated: June 8, 2007, 
and replace with new vortex inserts made from stainless steel, if 
cracks and/or loose or missing rivets for the vortex inserts are 
found.
    (3) For all SNs: Within 60 days after July 16, 2008 (the 
effective date of this AD), incorporate new pages 01-11, 01-12, 01-
24, 01-35, 05-28, 75-7, 75-7A, 75-7B, and 75-8 of ZLIN Z 143 L 
Airplane Maintenance Manual, Revision No. 9, dated: June 8, 2007, 
into your maintenance program. These pages include compliance times 
and procedures for repetitive inspections and corrective actions.

FAA AD Differences

    Note: This AD differs from the MCAI and/or service information 
as follows: The MCAI requires compliance for the inspection of SN 
0045 and greater at the next shop visit or within 110 hours TIS 
after the effective date of the MCAI. To assure the AD is clear for 
U.S. operators and all airplanes have the inspection done in a 
timely manner, this AD requires compliance for the inspection of SN 
0045 and greater within 110 hours TIS after July 16, 2008 (the 
effective date of this AD) or within 60 days after July 16, 2008 
(the effective date of this AD), whichever occurs first.

Other FAA AD Provisions

    (g) The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, 
Standards Office, 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: Doug Rudolph, Aerospace Engineer, FAA, Small 
Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 
64106; telephone: (816) 329-4059; fax: (816) 329-4090. 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.
    (2) Airworthy Product: For any requirement in this AD to obtain 
corrective actions from a manufacturer or other source, use these 
actions if they are FAA-approved. Corrective actions are considered 
FAA-approved if they are approved by the State of Design Authority 
(or their delegated agent). You are required to assure the product 
is airworthy before it is returned to service.
    (3) Reporting Requirements: For any reporting requirement in 
this AD, under the provisions of the Paperwork Reduction Act

[[Page 33002]]

(44 U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) 
has approved the information collection requirements and has 
assigned OMB Control Number 2120-0056.

Related Information

    (h) Refer to MCAI European Aviation Safety Agency (EASA) AD No. 
2008-0038, dated February 27, 2008; Moravan Aviation s.r.o. 
Mandatory Service Bulletin Z143L/31a, dated June 8, 2007; and new 
pages 01-11, 01-12, 01-24, 01-35, 05-28, 75-7, 75-7A, 75-7B, and 75-
8 of ZLIN Z 143 L Airplane Maintenance Manual, Revision No. 9, 
dated: June 8, 2007, for related information.

Material Incorporated by Reference

    (i) You must use Moravan Aviation s.r.o. Mandatory Service 
Bulletin Z143L/31a, dated June 8, 2007; and new pages 01-11, 01-12, 
01-24, 01-35, 05-28, 75-7, 75-7A, 75-7B, and 75-8 of ZLIN Z 143 L 
Airplane Maintenance Manual, Revision No. 9, dated: June 8, 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 
Moravan Aviation s.r.o., ZLIN Service, 765 81 Otrokovice, Czech 
Republic.
    (3) You may review copies at the FAA, Central Region, Office of 
the Regional Counsel, 901 Locust, Room 506, 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/cfr/ibr-locations.html.

    Issued in Kansas City, Missouri, on May 29, 2008.
David R. Showers,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
 [FR Doc. E8-12754 Filed 6-10-08; 8:45 am]

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