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###### Department of Transportation

###### Federal Aviation Administration

          - 14 CFR Part 39
          - [Docket No. FAA-2009-0699; Directorate Identifier 2009-CE-042-AD]
          - RIN 2120-AA64

# AGENCY:

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

# ACTION:

Notice of proposed rulemaking (NPRM).

# 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 uncommanded steering action were observed, while the steering system was switched off.

A leakage in the Steering Select/Bypass Valve, installed in the Steering Manifold, when closed, is suspected to have caused the uncommanded steering.

If left uncorrected, this condition could lead to a potentially dangerous veer along the runway; in fact, according to the Aircraft Flight Manual limitations, the steering system must be in `off' position during landing and takeoff (in this case when airspeed is higher than 60 knots). 

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 21, 2009.

# 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.

# 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-2009-0699; Directorate Identifier 2009-CE-042-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 AD 2009-0129, dated June 19, 2009 (referred to after this as “the MCAI”), to correct an unsafe condition for the specified products. The MCAI states:

Some cases of uncommanded steering action were observed, while the steering system was switched off.

A leakage in the Steering Select/Bypass Valve, installed in the Steering Manifold, when closed, is suspected to have caused the uncommanded steering.

                        If left uncorrected, this condition could lead to a potentially dangerous veer along the runway; in fact, according to the Aircraft Flight Manual limitations, the steering system must be in `off' position during                               ( print page 38992)                            landing and takeoff (in this case when airspeed is higher than 60 knots).                    

For the reasons stated above, this new AD mandates repetitive inspections for leakage of the Nose Landing Gear steering manifold.

The MCAI requires, if any inspection finds leakage of the steering manifold, the replacement of the steering manifold.

## Relevant Service Information

Piaggio Aero Industries S.p.A. has issued:
    - Service Bulletin (Mandatory) N. 80-0249, rev. 1, dated May 27, 2009;
    - (for S/N 1004 through 1104) Piaggio Aero Piaggio P.180 Avanti Maintenance Manual, Report No. 9066, 32-50-00, revised June 16, 2008; and
    - (for S/N 1105 and greater) Piaggio Aero Piaggio P.180 Avanti II Maintenance Manual, Report No. 180-MAN-0200-01105, 32-50-00, revised December 19, 2008.

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

We estimate that this proposed AD will affect 63 products of U.S. registry. We also estimate that it would take about 8 work-hours per product to comply with the basic requirements of this proposed AD. The average labor rate is $80 per work-hour.

Based on these figures, we estimate the cost of the proposed AD on U.S. operators to be $40,320, or $640 per product.

In addition, we estimate that any necessary follow-on actions would take about 16 work-hours and require parts costing $0, for a cost of $1,280 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.

§ 39.13 

2. The FAA amends § 39.13 by adding the following new AD:

**Piaggio Aero Industries S.p.A.:**                                 Docket No. FAA-2009-0699; Directorate Identifier 2009-CE-042-AD.                            

## Comments Due Date

(a) We must receive comments by September 21, 2009.

## Affected ADs

(b) None.

## Applicability

(c) This AD applies to Model P-180 airplanes, all serial numbers (S/N), certificated in any category.

## Subject

(d) Air Transport Association of America (ATA) Code 32: Landing Gear.

## Reason

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

Some cases of uncommanded steering action were observed, while the steering system was switched off.

A leakage in the Steering Select/Bypass Valve, installed in the Steering Manifold, when closed, is suspected to have caused the uncommanded steering.

If left uncorrected, this condition could lead to a potentially dangerous veer along the runway; in fact, according to the Aircraft Flight Manual limitations, the steering system must be in `off' position during landing and takeoff (in this case when airspeed is higher than 60 knots).

For the reasons stated above, this new AD mandates repetitive inspections for leakage of the Nose Landing Gear steering manifold.

The MCAI requires, if any inspection finds leakage of the steering manifold, the replacement of the steering manifold.

## Actions and Compliance

(f) Unless already done, do the following actions:

                                (1) Within the next 6 months after the effective date of this AD or within the next 100 hours time-in-service (TIS) after the effective date of this AD, whichever occurs first, and repetitively thereafter at intervals not to exceed every 165 hours TIS, do a                                       ( print page 38993)                                    functional check of the nose landing gear (NLG) steering manifold. Follow the accomplishment instructions of Piaggio Aero Industries S.p.A. Service Bulletin (Mandatory) N. 80-0249, rev. 1, dated May 27, 2009.                            

(2) Upon installation of a NLG steering manifold on any airplane, do a functional check of the NLG steering manifold. Repetitively thereafter at intervals not to exceed every 165 hours TIS, do a functional check of the NLG steering manifold. Follow the accomplishment instructions of Piaggio Aero Industries S.p.A. Service Bulletin (Mandatory) N. 80-0249, rev. 1, dated May 27, 2009.

(3) If during any inspection required in paragraphs (f)(1) and (f)(2) of this AD a NLG steering manifold does not pass the functional tests, using the compliance times in the accomplishment instructions of Piaggio Aero Industries S.p.A. Service Bulletin (Mandatory) N. 80-0249, rev. 1, dated May 27, 2009, replace the NLG steering manifold following (for S/N 1004 through 1104) pages 1 through 8; 201 through 216; and 501 through 506, of Piaggio Aero Piaggio P.180 Avanti Maintenance Manual, Report No. 9066, 32-50-00, revised June 16, 2008; or (for S/N 1105 and greater) pages 1 through 8; 201 through 216; and 501 through 506, of Piaggio Aero Piaggio P.180 Avanti II Maintenance Manual, Report No. 180-MAN-0200-01105, 32-50-00, revised December 19, 2008.

## 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. 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 (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 2009-0129, dated June 19, 2009; and Piaggio Aero Industries S.p.A. Service Bulletin (Mandatory) N. 80-0249, rev. 1, dated May 27, 2009, for related information. 

Issued in Kansas City, Missouri, on July 30, 2009.

James E. Jackson,

Acting Manager, Small Airplane Directorate, Aircraft Certification Service.

[FR Doc. E9-18685 Filed 8-4-09; 8:45 am]

BILLING CODE 4910-13-P