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###### Department of Transportation

###### Federal Aviation Administration

          - 14 CFR Part 39
          - [Docket No. FAA-2015-0132; Directorate Identifier 2014-CE-038-AD; Amendment 39-18132; AD 2015-07-04]
          - RIN 2120-AA64

# AGENCY:

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

# ACTION:

Final rule.

# SUMMARY:

We are adopting a new airworthiness directive (AD) for PILATUS Aircraft Ltd. Model PC-7 airplanes. 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 the potential for a spring on the air conditioning compressor clutch plate to shear the oil cooler inlet-hose due to the close routing of these parts without a protective cover. We are issuing this AD to require actions to address the unsafe condition on these products.

# DATES:

This AD is effective May 19, 2015.

The Director of the Federal Register approved the incorporation by reference of a certain publication listed in the AD as of May 19, 2015.

# ADDRESSES:

                        You may examine the AD docket on the Internet at                         *http://www.regulations.gov*                         by searching for and locating Docket No. FAA-2015-0132; 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 service information identified in this AD, contact PILATUS AIRCRAFT LTD., Customer Technical Support (MCC), P.O. Box 992, CH-6371 Stans, Switzerland; phone: +41 (0)41 619 67 74; fax: +41 (0)41 619 67 73; email:                         *Techsupport@pilatus-aircraft.com*; Internet:                         *http://www.pilatus-aircraft.com*. You may view this service information at the FAA, Small Airplane Directorate, 901 Locust, Kansas City, Missouri 64106. For information on the availability of this material at the FAA, call (816) 329-4148. It is also available on the Internet at                         *http://www.regulations.gov*                         by searching for and locating Docket No. FAA-2015-0132.                    

# 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; email:                         *doug.rudolph@faa.gov.*

# SUPPLEMENTARY INFORMATION:

## Discussion

                    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to adding an AD that would apply to PILATUS Aircraft Ltd. Model PC-7 airplanes. The NPRM was published in the                     **Federal Register**                     on January 29, 2015 (80 FR 4810). The NPRM proposed to correct an unsafe condition for the specified products and was based on mandatory continuing airworthiness information (MCAI)                           ( print page 19882)                        originated by an aviation authority of another country. The MCAI states:                

This Airworthiness Directive (AD) is prompted due to an unprotected routing of the oil cooler inlet-hose close to the air conditioning compressor clutch plate.

If a spring on the compressor clutch plate shears it could lead to a damage of the oil hose and the engine oil can spill into the engine bay.

In order to correct and control the situation, this AD requires the installation of a cover assembly which will be mounted on the attachment points of the compressor.

                    The MCAI can be found in the AD docket on the Internet at:                     *http://www.regulations.gov/​#!documentDetail;​D=​FAA-2014-1002-0002.*

## Comments

We gave the public the opportunity to participate in developing this AD. We received no comments on the NPRM (80 FR 4810, January 29, 2015) or on the determination of the cost to the public.

## Conclusion

We reviewed the relevant data and determined that air safety and the public interest require adopting the AD as proposed except for minor editorial changes. We have determined that these minor changes:
    - Are consistent with the intent that was proposed in the NPRM ( 80 FR 4810 , January 29, 2015) for correcting the unsafe condition; and
    - Do not add any additional burden upon the public than was already proposed in the NPRM ( 80 FR 4810 , January 29, 2015).

## Related Service Information Under 1 CFR Part 51

                    We reviewed PILATUS Aircraft Ltd. PILATUS PC-7 Service Bulletin No: 21-012, dated November 4, 2014. The service information describes actions for installation of a cover assembly (between the compressor clutch plate and the oil hose) to protect the oil hose. This information is reasonably available at                     *http://www.regulations.gov*                     by searching for and locating Docket No. FAA-2015-0132, or see                     **ADDRESSES**                     for other ways to access this service information.                

## Costs of Compliance

We estimate that this AD will affect 10 products of U.S. registry. We also estimate that it would take about 6 work-hours per product to comply with the basic requirements of this AD. The average labor rate is $85 per work-hour. Required parts would cost about $1,250 per product.

Based on these figures, we estimate the cost of the AD on U.S. operators to be $17,600, or $1,760 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 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 the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979),

(3) Will not affect intrastate aviation in Alaska, and

(4) 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.

## Examining the AD Docket

                    You may examine the AD docket on the Internet at                     *http://www.regulations.gov*                     by searching for and locating Docket No. FAA-2015-0132; 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.

§ 39.13

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

**2015-07-04 Pilatus Aircraft Ltd.:**                             Amendment 39-18132; Docket No.  FAA-2015-0132; Directorate Identifier 2014-CE-038-AD.                        

## (a) Effective Date

This airworthiness directive (AD) becomes effective May 19, 2015.

## (b) Affected ADs

None.

## (c) Applicability

This AD applies to Pilatus Aircraft Ltd. Model PC-7 airplanes, all serial numbers, that:

(1) have not incorporated the actions of any version of PILATUS PC-7 Service Bulletin No: 21-006, which allows for the installation of a different air conditioning compressor mounted at a different location and makes the unsafe condition nonexistent; and

(2) are certificated in any category.

## (d) Subject

Air Transport Association of America (ATA) Code 21: Air Conditioning.

## (e) Reason

This AD was prompted by 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 the potential for a spring on the air conditioning compressor clutch plate to shear the oil cooler inlet-hose due to the close routing of these parts without a protective cover. We are issuing this AD to correct the unprotected routing of the oil cooler inlet-hose, which could lead to damage of the oil hose resulting in an engine oil spill into the engine bay.

## (f) Actions and Compliance

                            Unless already done, within the next 120 days after May 19, 2015 (the effective date of this AD), install a cover assembly on the attachment points of the compressor following the Accomplishment Instructions                                   ( print page 19883)                                in PILATUS PC-7 Service Bulletin No: 21-012, dated November 4, 2014.                        

## (g) Other FAA AD Provisions

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; email:                             *doug.rudolph@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, a federal agency may not conduct or sponsor, and a person is not required to respond to, nor shall a person be subject to a penalty for failure to comply with a collection of information subject to the requirements of the Paperwork Reduction Act unless that collection of information displays a current valid OMB Control Number. The OMB Control Number for this information collection is 2120-0056. Public reporting for this collection of information is estimated to be approximately 5 minutes per response, including the time for reviewing instructions, completing and reviewing the collection of information. All responses to this collection of information are mandatory. Comments concerning the accuracy of this burden and suggestions for reducing the burden should be directed to the FAA at: 800 Independence Ave. SW., Washington, DC 20591, Attn: Information Collection Clearance Officer, AES-200.                        

## (h) Related Information

                            Refer to MCAI Federal Office of Civil Aviation (FOCA) AD HB-2014-008, dated December 9, 2014; and any version of PILATUS PC-7 Service Bulletin No: 21-006, for related information. The MCAI can be found in the AD docket on the Internet at:                             *http://www.regulations.gov/​#!documentDetail;​D=​FAA-2014-1002-0002.*

## (i) Material Incorporated by Reference

(1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.

(2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise.

(i) Pilatus Aircraft Ltd. Pilatus PC-7 Service Bulletin No: 21-012, dated November 4, 2014.

(ii) Reserved.

                            (3) For Pilatus Aircraft Ltd. service information identified in this AD, contact Pilatus Aircraft Ltd., Customer Technical Support (MCC), P.O. Box 992, CH-6371 Stans, Switzerland; phone: +41 (0)41 619 67 74; fax: +41 (0)41 619 67 73; email:                             *Techsupport@pilatus-aircraft.com;*                             Internet:                             *http://www.pilatus-aircraft.com.*

                            (4) You may view this service information at the FAA, Small Airplane Directorate, 901 Locust, Kansas City, Missouri 64106. For information on the availability of this material at the FAA, call (816) 329-4148. In addition, you can access this service information on the Internet at                             *http://www.regulations.gov*                             by searching for and locating Docket No. FAA-2015-0132.                        

                            (5) You may view this service information that is incorporated by reference 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 March 31, 2015.

Pat Mullen,

Acting Manager, Small Airplane Directorate, Aircraft Certification Service.

[FR Doc. 2015-07858 Filed 4-13-15; 8:45 am]

BILLING CODE 4910-13-P