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CFR Citation: 14 CFR Part 39

Docket ID: [Docket No. FAA-2007-0294; Directorate Identifier 2007-CE-087-AD]

RIN ID: RIN 2120-AA64

NOTICE: PROPOSED RULES

ACTION: Airworthiness directives:

DOCUMENT ACTION: Notice of proposed rulemaking (NPRM).

SUBJECT CATEGORY: Airworthiness Directives; Piaggio Aero Industries S.p.A. Model P 180 Airplanes

DATES: We must receive comments on this proposed AD by January 14, 2008.

DOCUMENT 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:

Due to pressurization loads, the fuselage frame of the emergency exit door could suffer from fatigue and develop cracks in its corners. The superseded Italian Airworthiness Directive (AD) 1995 059 was issued to require modification of the emergency door frame in accordance with Piaggio (at the time I.A.M. Rinaldo Piaggio S.p.A.) Service Bulletin 800057 original issue.

Parts necessary to carry out the modification were a new door pan assembly and a doubler; Since these parts are no longer available, Piaggio Aero Industries S.p.A. (PAI) designed new suitable part numbers introduced by Revision 1 of Service Bulletin 800057. The present AD mandates modification of the fuselage emergency door frame in accordance with Revision 1 of Service Bulletin 800057 from PAI.
The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

SUMMARY: Piaggio Aero Industries S.p.A.,

SUPPLEMENTAL INFORMATION

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. FAA2007****; Directorate Identifier 2007CE087AD'' 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
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for the Member States of the European Community, has issued AD No.: 20070225, dated August 14, 2007 (referred to after this as ``the MCAI''), to correct an unsafe condition for the specified products.

The MCAI states:

Due to pressurization loads, the fuselage frame of the emergency exit door could suffer from fatigue and develop cracks in its corners. The superseded Italian Airworthiness Directive (AD) 1995 059 was issued to require modification of the emergency door frame in accordance with Piaggio (at the time I.A.M. Rinaldo Piaggio S.p.A.) Service Bulletin 800057 original issue.

Parts necessary to carry out the modification were a new door pan assembly and a doubler; Since these parts are no longer available, Piaggio Aero Industries S.p.A. (PAI) designed new suitable part numbers introduced by Revision 1 of Service Bulletin 800057.

The present AD mandates modification of the fuselage emergency door frame in accordance with Revision 1 of Service Bulletin 800057 from PAI.

The MCAI requires the modification of the fuselage frame of the emergency door, using the newly designed door pan assembly and doubler and following Piaggio Aero Industries S.p.A. Mandatory Service Bulletin N. 800057, Revision 1, dated May 31, 2007.

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

Relevant Service Information

Piaggio Aero Industries S.p.A. has issued Mandatory Service Bulletin N. 800057, Revision 1, dated May 31, 2007. 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 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

Based on the service information, we estimate that this proposed AD would affect about 31 products of U.S. registry. We also estimate that it would take about 70 workhours per product to comply with the basic requirements of this proposed AD. The average labor rate is $80 per workhour. Required parts would cost about $14,105 per product.

Based on these figures, we estimate the cost of the proposed AD on U.S. operators to be $610,855, or $19,705 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, 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, 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 39AIRWORTHINESS 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. FAA20070294;
Directorate Identifier 2007CE087AD.
Comments Due Date
(a) We must receive comments by January 14, 2008.
Affected ADs
(b) None.
Applicability
(c) This AD applies to PIAGGIO P180 airplanes, manufacturer serial numbers (MSN) 1001, 1002, 1004, and MSN 1006 through 1033, that:
(1) are certificated in any category; and
(2) have not been modified in accordance with Piaggio Aero Industries Service Bulletin No. 800057, dated February 7, 1995. Subject
(d) Air Transport Association of America (ATA) Code 53: Fuselage.
Reason
(e) The mandatory continuing airworthiness information (MCAI) states:

Due to pressurization loads, the fuselage frame of the emergency exit door could suffer from fatigue and develop cracks in its corners. The superseded Italian Airworthiness Directive (AD) 1995 059 was issued to require modification of the emergency door frame in accordance with Piaggio (at the time I.A.M. Rinaldo Piaggio S.p.A.) Service Bulletin 800057 original issue.

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Parts necessary to carry out the modification were a new door pan assembly and a doubler; Since these parts are no longer available, Piaggio Aero Industries S.p.A. (PAI) designed new suitable part numbers introduced by Revision 1 of Service Bulletin 800057.

The present AD mandates modification of the fuselage emergency door frame in accordance with Revision 1 of Service Bulletin 800057 from PAI.
The MCAI requires the modification of the fuselage frame of the emergency door, using the newly designed door pan assembly and doubler, following Piaggio Aero Industries S.p.A. SB 800057, Revision 1, dated May 31, 2007.
Actions and Compliance
(f) Unless already done, replace the emergency exit door pan assembly part number (P/N) 80111152401 with a new door pan assembly P/N 80111152405, and a new doubler reinforcement P/N 80 111604001, following Piaggio Aero Industries S.p.A. Mandatory Service Bulletin N. 800057, Revision 1, dated May 31, 2007, at whichever of the following occurs later:
(i) When the airplane reaches 4,500 hours total timeinservice (TIS); or
(ii) Within 6 months after the effective date of this AD or 500 hours TIS after the effective date of this AD, whichever of these occurs first.

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) 3294145; fax: (816) 3294090. 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 FAAapproved. Corrective actions are considered FAAapproved 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 (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 21200056.
Related Information
(h) Refer to MCAI European Aviation Safety Agency AD No.: 2007 0225, dated August 14, 2007; and Piaggio Aero Industries S.p.A. Mandatory Service Bulletin N. 800057, Revision 1, dated May 31, 2007, for related information.

Issued in Kansas City, Missouri, on December 10, 2007. John R. Colomy,
Acting Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. E724216 Filed 121307; 8:45 am]
BILLING CODE 491013P

FOR FURTHER INFORMATION CONTACT Sarjapur Nagarajan, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 3294145; fax: (816) 3294090.