[4910-13-P] 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA-2014-0159; Directorate Identifier 2014-NE-01-AD; Amendment 

39-17905; AD 2014-15-03] 

RIN 2120-AA64 

Airworthiness Directives; Pratt & Whitney Canada Corporation Turboprop 

Engines 

AGENCY: Federal Aviation Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new airworthiness directive (AD) for certain serial 

number Pratt & Whitney Canada Corporation (P&WC) model PW150A turboprop 

engines. This AD requires rerouting of the igniter cables and installation of new support 

brackets. This AD was prompted by reports of damage to a high-pressure fuel line, which 

could result in a high-pressure fuel leak into the engine nacelle. We are issuing this AD to 

prevent high-pressure fuel leaks, which could cause engine fire and damage to the engine 

and the airplane. 

DATES: This AD becomes effective [INSERT DATE 35 DAYS AFTER DATE OF 

PUBLICATION IN THE FEDERAL REGISTER]. 

The Director of the Federal Register approved the incorporation by reference of a 

certain publication listed in this AD as of [INSERT DATE 35 DAYS AFTER DATE OF 

PUBLICATION IN THE FEDERAL REGISTER]. 
ADDRESSES: For service information identified in this AD, contact Pratt & Whitney 

Canada Corp., 1000 Marie-Victorin, Longueuil, Quebec, Canada, J4G 1A1 ; phone: (800) 

268-8000; fax: (450) 647-2888; Internet: www.pwc.ca. You may view this service 

information at the FAA, Engine & Propeller Directorate, 12 New England Executive 

Park, Burlington, MA. For information on the availability ofthis material at the FAA, 

call (781) 238-7125. 

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-2014-0159; 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 AD, the mandatory continuing airworthiness 

information (MCAI), the regulatory evaluation, any comments received, and other 

information. The address for the Docket Office (phone: (800) 647-5527) is 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: Wego Wang, Aerospace Engineer, 

Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803 ; phone: (781) 238-7134; fax: (781) 238-7199; 

email: wego.wang@faa.gov. 

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SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by 

adding an AD that would apply to the specified products. The NPRM was published in 

the Federal Register on April 10, 2014 (79 FR 19844). The NPRM proposed to correct 

an unsafe condition for the specified products. The MCAI states: 

Comments 

There have been reports of damage in excess of acceptable criteria 

to the high-pressure fuel line from the P&WC PW150A engine 

flowmeter to the flow divider. Damage has included fretting wear 

through contact with the engine igniter cables. The contact is the 

result of incorrectly routed igniter cables. While there has been no 

report of associated fuel leakage, the fretting wear, if undetected, 

could progress to a point where high-pressure fuel would leak into 

the engine nacelle. 

We gave the public the opportunity to participate in developing this AD. We 

considered the comment received. 

Request to Clarify Definition of Shop Visit 

One commenter requested that we clarify the definition of shop visit because the 

igniter cables are on the exterior of the engine and no disassembly is required to gain 

access to the igniter cables. 

We agree. We changed the definition of shop visit in paragraph (f) ofthis AD to 

be when an engine is inducted into the shop to perform maintenance. 

Conclusion 

We reviewed the available data, including the comment received, and determined 

that air safety and the public interest require adopting this AD with the changes described 

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previously. We determined that these changes will not increase the economic burden on 

any operator or increase the scope of this AD. 

Costs of Compliance 

We estimate that this AD affects 180 engines installed on airplanes ofU.S. 

registry. We also estimate that it would take about 1 hour per engine to comply with this 

AD. The average labor rate is $85 per hour. Required parts cost about $682 per engine. 

Based on these figures, we estimate the cost ofthis AD on U.S. operators to be $138,060. 

Authority for This Rulemaking 

Title 49 ofthe 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 ofthe 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 

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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 to the extent that it justifies 

making a regulatory distinction, 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. 

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 (Amended) 

2. The FAA amends § 39.13 by adding the following new airworthiness directive 

(AD): 

2014-15-03 Pratt & Whitney Canada Corporation: Amendment 39-17905 ; Docket 

No. FAA-2014-0159; Directorate Identifier 2014-NE-01-AD. 

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(a) Effective Date 

This AD becomes effective [INSERT DATE 35 DAYS AFTER DATE OF 

PUBLICATION IN THE FEDERAL REGISTER]. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Pratt & Whitney Canada Corporation (P&WC) model 

PW150A turboprop engines, serial number PCE-FA0916 and earlier. 

(d) Reason 

This AD was prompted by reports of damage to a high-pressure fuel line, which 

could result in a high-pressure fuel leak into the engine nacelle. We are issuing this AD to 

prevent high-pressure fuel leaks, which could cause engine fire and damage to the engine 

and the airplane. 

(e) Actions and Compliance 

Comply with this AD within the compliance times specified, unless already done. 

(1) At the next shop visit, but before 36 months from the effective date of this 

AD, reroute the igniter cables and install new support brackets in accordance with 

paragraph 3.B., Accomplishment Instructions, ofP&WC Service Bulletin (SB) No. 

PW150-72-35274, Revision 1, dated May 3, 2012. 

(2) Reserved. 

(f) Definition 

For the purpose of this AD, a shop visit is when the engine is inducted into the 

shop to perform maintenance. 

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(g) Credit for Previous Action 

If you performed the actions in paragraph (e) of this AD before the effective date 

of this AD using P&WC SB No. PW150-72-35274, Initial Issue, dated March 23 , 20 12, 

you met the requirements of this AD. 

(h) Alternative Methods of Compliance (AMOCs) 

The Manager, Engine Certification Office , FAA, may approve AMOCs to this 

AD. Use the procedures found in 14 CFR 3 9.19 to make your request. 

(i) Related Information 

(1) For more information about this AD, contact Wego Wang, Aerospace 

Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 01803 ; phone: (781) 238-7134; fax: (78 1) 238-

7199; email: wego.wang@faa.gov. 

(2) Refer to MCAI Transport Canada AD CF-2014-09, dated February 12, 20 14, 

for more information. You may examine the MCAI in the AD docket on the Internet at 

http://www.regulations.gov/#!documentDetail;D=FAA-2014-0159-0003. 

(j) 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 I 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) Pratt & Whitney Canada Corporation (P&WC) Service Bulletin No. PW150-

72-35274, Revision 1, dated May 3, 20 12. 

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(ii) Reserved. 

(3) For P&WC service information identified in this AD, contact Pratt & Whitney 

Canada Corp., 1000 Marie-Victorin, Longueuil, Quebec, Canada, J4G 1 A 1; phone: (800) 

268-8000; fax : (450) 647-2888; Internet: www.pwc.ca. 

( 4) You may view this service information at FAA, Engine & Propeller 

Directorate, 12 New England Executive Park, Burlington, MA. For information on the 

availability ofthis material at the FAA, call (781) 238-7125. 

(5) You may view this service information 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-registerlcfr/ibrlocations.html. 

Issued in Burlington, Massachusetts, on July 14, 2014. 

Acting 

f!.s~ Assistant Directorate --Manager, Engine & Propeller Directorate, 

Aircraft Certification Service. 

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