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2010-03-04	PIAGGIO AERO INDUSTRIES S.P.A.: Amendment 39-16187; Docket No. FAA-2009-1081; Directorate Identifier 2009-CE-058-AD.

EFFECTIVE DATE

(a) This airworthiness directive (AD) becomes effective March 11, 2010.

AFFECTED ADS

(b) None.

APPLICABILITY

(c) This AD applies to  Model PIAGGIO P-180 airplanes, all  serial numbers
    through 1180, certificated in any category.

SUBJECT

(d) Air Transport Association of America (ATA) Code 24: Electric Power.

REASON

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

    An operator reported a short  circuit between a generator power  cable
    and an anti-ice shutoff valve, which was caused by chafing between the
    cable  and the  valve; the  insulation  of  the cable  and surrounding
    sleeve were worn off.

    An investigation revealed that  a scarce clearance between  the cables
    and adjacent parts, together with vibrations of generator power cables
    favoured by insufficient clamping, was the root cause of the damage.

    If left uncorrected, this situation could lead to short circuits  with
    possible fire and/or loss of important aircraft systems.

    This Airworthiness  Directive (AD)  requires an  inspection to  detect
    damaged  cables/sleeves,  and  replacement/repair  as  necessary;   in
    addition,  this  AD  requires   to  ensure  that  acceptable   minimum
    clearances between cables and parts exist, and to improve clamping  to
    minimize vibrations of the cables.

ACTIONS AND COMPLIANCE

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

(1) Within 3 months after March 11, 2010 (the effective date of this  AD),
    inspect for minimum clearance  and insulation damage to  the generator
    power  cables  in  accordance  with   Part A   of  the  ACCOMPLISHMENT
    INSTRUCTIONS  of  PIAGGIO  AERO  INDUSTRIES  S.p.A.  Service  Bulletin
    (Mandatory) N.: 80-0271, dated May 18, 2009.

(2) If, as a result of the inspection required by paragraph (f)(1) of this
    AD, any  discrepancy (inadequate  clearance or  insulation damage)  is
    found, before further flight,  do all necessary corrective  actions in
    accordance with Part B  of the ACCOMPLISHMENT INSTRUCTIONS  of PIAGGIO
    AERO INDUSTRIES S.p.A. Service Bulletin (Mandatory) N.: 80-0271, dated
    May 18, 2009.

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  European Aviation  Safety Agency  AD No.:  2009-0212,
    dated  October 6,  2009; and  PIAGGIO AERO  INDUSTRIES S.p.A.  Service
    Bulletin  (Mandatory) N.:  80-0271, dated  May 18,  2009, for  related
    information.

MATERIAL INCORPORATED BY REFERENCE

(i) You  must  use  PIAGGIO  AERO  INDUSTRIES  S.p.A.   Service   Bulletin
    (Mandatory)  N.:  80-0271,  dated  May 18, 2009,  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  Piaggio Aero
    Industries S.p.a., Via Cibrario, 4--16154 Genoa, Italy; telephone  +39
    010    06481    741;    fax:    +39    010    6481    309;   Internet:
    http://www.piaggioaero.com, or e-mail: MMicheli@piaggioaero.it.

(3) You may  review copies  of  the  service information  incorporated  by
    reference  for this  AD at  the FAA,  Central Region,  Office  of  the
    Regional  Counsel,  901  Locust,  Kansas  City,  Missouri  64106.  For
    information  on  the  availability of  this  material  at the  Central
    Region, call (816) 329-3768.

(4) You may also review copies of the service information incorporated  by
    reference  for  this   AD  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/i
    br_locations.html.

Issued in Kansas  City, Missouri, on  January 21, 2010.  James E. Jackson,
Acting  Manager,  Small   Airplane  Directorate,  Aircraft   Certification
Service.

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.

PREAMBLE

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

ACTION: Final rule.

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:

An operator reported a short circuit between a generator power cable and an anti-ice shutoff valve, which was caused by chafing between the cable and the valve; the insulation of the cable and surrounding sleeve were worn off.
An investigation revealed that a scarce clearance between the cables and adjacent parts, together with vibrations of generator power cables favoured by insufficient clamping, was the root cause of the damage.
If left uncorrected, this situation could lead to short circuits with possible fire and/or loss of important aircraft systems.

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

DATES: This AD becomes effective March 11, 2010.
On March 11, 2010, 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: 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:

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 November 19, 2009 (74 FR 59941). That NPRM proposed to correct an unsafe condition for the specified products. The MCAI states:

An operator reported a short circuit between a generator power cable and an anti-ice shutoff valve, which was caused by chafing between the cable and the valve; the insulation of the cable and surrounding sleeve were worn off.
An investigation revealed that a scarce clearance between the cables and adjacent parts, together with vibrations of generator power cables favoured by insufficient clamping, was the root cause of the damage.
If left uncorrected, this situation could lead to short circuits with possible fire and/or loss of important aircraft systems.
This Airworthiness Directive (AD) requires an inspection to detect damaged cables/sleeves, and replacement/repair as necessary; in addition, this AD requires to ensure that acceptable minimum clearances between cables and parts exist, and to improve clamping to minimize vibrations of the cables.

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

We estimate that this AD will affect 63 products of U.S. registry. We also estimate that it will take about 2 work-hours per product to comply with the basic requirements of this AD. The average labor rate is $85 per work-hour.
Based on these figures, we estimate the cost of this AD to the U.S. operators to be $10,710 or $170 per product.
In addition, we estimate that any necessary follow-on actions would take about 6 work-hours and require parts costing $10, for a cost of $520 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 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

Accordingly, under the authority delegated to me by the Administrator, the FAA amends 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: