
[Federal Register: August 9, 2010 (Volume 75, Number 152)]
[Proposed Rules]               
[Page 47734-47736]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr09au10-18]                         

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2010-0778; Directorate Identifier 2010-CE-034-AD]
RIN 2120-AA64

 
Airworthiness Directives; Piaggio Aero Industries S.p.A. Model 
PIAGGIO P-180 Airplanes

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

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for the 
products listed above. This proposed AD results from mandatory 
continuing airworthiness information (MCAI) originated 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:

    Some cases of corrosion were detected in the interface between 
the elevator hinges fittings (metallic) and the horizontal 
stabilizer (carbon fibre); investigation identified the cause in 
galvanic corrosion between dissimilar materials.
    If left uncorrected, this situation could lead to a structural 
failure of the elevator, which could result in possible loss of 
control of the aeroplane.

The proposed AD would require actions that are intended to address the 
unsafe condition described in the MCAI.

DATES: We must receive comments on this proposed AD by September 23, 
2010.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Portal: Go to http://
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 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.

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 this proposed AD, 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.

FOR FURTHER INFORMATION CONTACT: Sarjapur Nagarajan, Aerospace 
Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas 
City, Missouri 64106; telephone: (816) 329-4145; fax: (816) 329-4090; 
e-mail: sarjapur.nagarajan@faa.gov.

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2010-0778; 
Directorate Identifier 2010-CE-034-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD because of those comments.
    We will post all comments we receive, without change, to http://
www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this proposed AD.

Discussion

    The European Aviation Safety Agency (EASA), which is the Technical 
Agent for the Member States of the European Community, has issued EASA 
AD No.: 2010-0124 (Correction: June 22, 2010), dated June 22, 2010, 
(referred to after this as ``the MCAI''), to correct an unsafe 
condition for the specified products The MCAI states:

    Some cases of corrosion were detected in the interface between 
the elevator hinges fittings (metallic) and the horizontal 
stabilizer (carbon fibre); investigation identified the cause in 
galvanic corrosion between dissimilar materials.
    If left uncorrected, this situation could lead to a structural 
failure of the elevator, which could result in possible loss of 
control of the aeroplane.
    This AD requires:
    (1) Inspection of the hinges fittings for corrosion and of the 
stabilizer for delamination;
    (2) Repair of the stabilizer, if necessary;
    (3) Replacement of the fittings, if corroded;
    (4) Improvement of fittings installation;
    (5) Installation of aluminum strips in the stabilizer to improve 
bonding, in accordance with Piaggio Aero Industries (PAI) Service 
Bulletin (SB) 80-0262 Revision 2.

You may obtain further information by examining the MCAI in the AD 
docket.

Relevant Service Information

    PIAGGIO AERO INDUSTRIES S.p.A. has issued Service Bulletin 
(MANDATORY) N.: SB-80-0262, Revision 2, dated March 17, 2010. The 
actions described in this service information are intended to correct 
the unsafe condition identified in the MCAI.

FAA's Determination and Requirements of the Proposed AD

    This product has been approved by the aviation authority of another 
country, and is approved for operation in the United States. Pursuant 
to our bilateral agreement with this State of Design Authority, they 
have notified us of the unsafe condition described in the MCAI and 
service information referenced above. We are proposing this AD because 
we evaluated all information and determined the unsafe condition exists 
and is likely to exist or develop on other products of the same type 
design.

Differences Between This Proposed 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

[[Page 47735]]

these changes, we do not intend to differ substantively from the 
information provided in the MCAI and related service information.
    We might also have proposed 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 proposed AD.

Costs of Compliance

    We estimate that this proposed AD will affect 96 products of U.S. 
registry. We also estimate that it would take about 9 work-hours per 
product to comply with the basic requirements of this proposed AD. The 
average labor rate is $85 per work-hour.
    Based on these figures, we estimate the cost of the proposed AD on 
U.S. operators to be $73,440, or $765 per product.
    In addition, we estimate that any necessary follow-on actions would 
take about 32 work-hours and require parts costing $11,000, for a cost 
of $13,720 per product. We have no way of determining the number of 
products that may need these actions.

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 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 this 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.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, 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:

Piaggio Aero Industries S.p.A.: Docket No. FAA-2010-0778; 
Directorate Identifier 2010-CE-034-AD.

Comments Due Date

    (a) We must receive comments by September 23, 2010.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Model PIAGGIO P-180 airplanes, serial 
numbers 1002 and 1004 through 1191, certificated in any category.

Subject

    (d) Air Transport Association of America (ATA) Code 55: 
Stabilizers.

Reason

    (e) The mandatory continuing airworthiness information (MCAI) 
states:

    Some cases of corrosion were detected in the interface between 
the elevator hinges fittings (metallic) and the horizontal 
stabilizer (carbon fibre); investigation identified the cause in 
galvanic corrosion between dissimilar materials.
    If left uncorrected, this situation could lead to a structural 
failure of the elevator, which could result in possible loss of 
control of the aeroplane.

    This AD requires:

    (1) Inspection of the hinges fittings for corrosion and of the 
stabilizer for delamination;
    (2) repair of the stabilizer, if necessary;
    (3) replacement of the fittings, if corroded;
    (4) improvement of fittings installation;
    (5) installation of aluminum strips in the stabilizer to improve 
bonding, in accordance with Piaggio Aero Industries (PAI) Service 
Bulletin (SB) 80-0262 Revision 2.

Actions and Compliance

    (f) Unless already done, do the following actions:
    (1) Within the next 1,500 hours time-in-service (TIS) after the 
effective date of this AD or within 4 years after the effective date 
of this AD, whichever occurs first, do the following:
    (i) Remove the left-hand (LH) and the right-hand (RH) elevators 
and do all of the inspections and corrective actions following the 
Accomplishment Instructions in Parts A, B, C, D, and E of PIAGGIO 
AERO INDUSTRIES S.p.A. Service Bulletin (MANDATORY) N.: SB-80-0262, 
Revision 2, dated March 17, 2010.
    (ii) Reinstall the LH and RH elevators and do the final checks 
following the Accomplishment Instructions, Part F, of PIAGGIO AERO 
INDUSTRIES S.p.A. Service Bulletin (MANDATORY) N.: SB-80-0262 
Revision 2, dated March 17, 2010.
    (2) We will allow ``unless already done'' credit for inspections 
and corrective actions already done, before the effective date of 
this AD, following PIAGGIO AERO INDUSTRIES S.p.A. Service Bulletins 
(MANDATORY) N.: SB-80-0262, original issue dated September 24, 2009; 
or Revision 1 dated December 23, 2009, for compliance with the 
requirements of this AD.

FAA AD Differences

    Note:  This AD differs from the MCAI and/or service information 
as follows: No differences.

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: Sarjapur Nagarajan, Aerospace Engineer, FAA, 
Small Airplane Directorate, 901 Locust, Room 301, Kansas City, 
Missouri 64106; telephone: (816) 329-4145; fax: (816) 329-4090; e-
mail: sarjapur.nagarajan@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.
    (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 47736]]

(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 EASA AD No.: 2010-0124 (Correction: June 22, 
2010), dated June 22, 2010; and PIAGGIO AERO INDUSTRIES S.p.A. 
Service Bulletin (MANDATORY) N.: SB-80-0262, Revision 2, dated March 
17, 2010, for related information.

    Issued in Kansas City, Missouri, on August 2, 2010.
Steven W. Thompson,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2010-19551 Filed 8-6-10; 8:45 am]
BILLING CODE 4910-13-P

