Federal Register / Vol. 75, No. 94 / Monday, May 17, 2010 / Proposed Rules 27489 

cause engine malfunction and/or massive 

fuel leakage. 

We are issuing this AD to prevent the 

pump from exceeding the fuel pressure, 

which could result in engine malfunction or 

a massive fuel leak. These conditions could 

cause loss of control of the airplane or a fire. 

Actions and Compliance 

(e) Unless already done, do the following 

actions. 

(1) At the next maintenance, or within the 

next 25 hours of engine operation, whichever 

occurs first, after the effective date of this 

AD, remove affected fuel pumps, P/Ns 

892230, 892232, 892235, 892236, 892540, or 

892545. 

(2) After the effective date of this AD, do 

not install fuel pump, P/Ns 892230, 892232, 

892235, 892236, 892540, or 892545, on any 

engine. 

FAA AD Differences 

(f) This AD differs from the MCAI and/or 

service information as follows: The MCAI 

requires replacing an affected fuel pump with 

fuel pump, P/N 892542 or 892546. This AD 

requires replacement of an affected fuel 

pump with a fuel pump eligible for 

installation on the airplane. 

Other FAA AD Provisions 

(g) Alternative Methods of Compliance 

(AMOCs): The Manager, Engine Certification 

Office, FAA, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. 

Related Information 

(h) Refer to MCAI Airworthiness Directive 

2007—0060R1—E, dated April 20, 2007, and 

Rotax Aircraft Engines Service Bulletin SB– 

912–053, dated April 13, 2007, for related 

information. Contact BRP–Rotax GmbH & Co. 

KG, Welser Strasse 32, A–4623 Gunskirchen, 

Austria, or go to: http://www.rotax-aircraftengines.com/, for a copy of this service 

information. 

(i) Contact Tara Chaidez, Aerospace 

Engineer, Engine Certification Office, FAA, 

Engine and Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; e-mail: tara.chaidez@faa.gov; 

telephone (781) 238–7773; fax (781) 238– 

7199, for more information about this AD. 

Issued in Burlington, Massachusetts, on 

May 10, 2010. 

Peter A. White, 

Assistant Manager, Engine and Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–11643 Filed 5–14–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0245; Directorate 

Identifier 2010–NE–15–AD] 

RIN 2120–AA64 

Airworthiness Directives; Pratt & 

Whitney Canada Corp. PW615F–A 

Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), 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) 

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: 

A PW617F–E engine powered twin 

engined aircraft had recently experienced an 

uncommanded power reduction on one of its 

engines. Investigation showed that the Fuel 

Filter Bypass Valve poppet in the Fuel Oil 

Heat Exchanger (FOHE) on that engine had 

worn through the housing seat, allowing 

unfiltered fuel and debris to contaminate the 

Fuel Metering Unit (FMU), resulting in fuel 

flow drop and subsequent power reduction. 

Pratt & Whitney Canada Corp. has confirmed 

that this is a dormant failure that could result 

in an unsafe condition. 

The PW615F–A engine Fuel Filter Bypass 

Valve is very similar to that of PW617F–E, 

but so far there have been no operational 

abnormalities reported due to subject valve 

failure on PW615F–A engines. However, 

evaluation by Pratt & Whitney Canada Corp. 

has confirmed similar dormant failure of 

worn through poppets of the subject valve on 

some 615F–A engine installations, which 

could affect both engines at the same time on 

an aircraft and may result in an unsafe 

condition. 

We are proposing this AD to prevent 

uncommanded power reduction, which 

could result in the inability to continue 

safe flight and safe landing. 

DATES: We must receive comments on 

this proposed AD by July 1, 2010. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov and follow 

the instructions for sending your 

comments electronically. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 1200 

New Jersey Avenue SE., West Building 

Ground Floor, Room W12–140, 

Washington, DC 20590–0001. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

• Fax: (202) 493–2251. 

Contact Pratt & Whitney Canada 

Corp., 1000 Marie-Victorin, Longueuil, 

Quebec, Canada, J4G 1A1; telephone 

800–268–8000; fax 450–647–2888; Web 

site: www.pwc.ca; for the service 

information identified in this proposed 

AD. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Operations office 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 Operations 

office (telephone (800) 647–5527) is the 

same as the Mail address provided in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: Ian 

Dargin, Aerospace Engineer, Engine 

Certification Office, FAA, Engine and 

Propeller Directorate, 12 New England 

Executive Park; Burlington, MA 01803; 

e-mail: ian.dargin@faa.gov; telephone 

(781) 238–7178; fax (781) 238–7199. 

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–2010–0245; Directorate Identifier 

2010–NE–15–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 based on 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 with FAA 

personnel concerning this proposed AD. 

Using the search function of the Web 

site, anyone can find and read the 

comments in any of our dockets, 

including, if provided, the name of the 

individual who sent the comment (or 

signed the comment on behalf of an 

association, business, labor union, etc.). 

You may review the DOT’s complete 

mstockstill on DSKH9S0YB1PROD with PROPOSALS

27490 Federal Register / Vol. 75, No. 94 / Monday, May 17, 2010 / Proposed Rules 

Privacy Act Statement in the Federal 

Register published on April 11, 2000 

(65 FR 19477–78). 

Discussion 

Transport Canada, which is the 

aviation authority for Canada, has 

issued Canada AD CF–2010–03, dated 

January 20, 2010 (referred to after this 

as ‘‘the MCAI’’), to correct an unsafe 

condition for the specified products. 

The MCAI states: 

A PW617F–E engine powered twin 

engined aircraft had recently experienced an 

uncommanded power reduction on one of its 

engines. Investigation showed that the Fuel 

Filter Bypass Valve poppet in the FOHE on 

that engine had worn through the housing 

seat, allowing unfiltered fuel and debris to 

contaminate the FMU, resulting in fuel flow 

drop and subsequent power reduction. Pratt 

& Whitney Canada Corp. has confirmed that 

this is a dormant failure that could result in 

an unsafe condition. 

The PW615F–A engine Fuel Filter Bypass 

Valve is very similar to that of PW617F–E, 

but so far there have been no operational 

abnormalities reported due to subject valve 

failure on PW615F–A engines. However, 

evaluation by Pratt & Whitney Canada Corp. 

has confirmed similar dormant failure of 

worn through poppets of the subject valve on 

some 615F–A engine installations, which 

could affect both engines at the same time on 

an aircraft and may result in an unsafe 

condition. 

On December 9, 2009, Pratt & Whitney 

Canada Corp. issued an ASB No. PW600–72– 

A63071 that introduced a new Fuel Filter 

Bypass Valve Assembly with an improved 

design poppet to help alleviate the subject 

poppet wear problem. This AD is issued to 

mandate replacement of FOHE Fuel Filter 

Bypass Valve on all PW615F–A engines as 

per the Pratt & Whitney Canada Corp. ASB 

No. PW600–72–A63071 instructions. 

You may obtain further information 

by examining the MCAI in the AD 

docket. 

Relevant Service Information 

Pratt & Whitney Canada Corp. has 

issued ASB No. PW600–72–A63071, 

Revision 1, dated January 7, 2010. The 

actions described in this service 

information are intended to correct the 

unsafe condition identified in the 

MCAI. 

FAA’s Determination and Requirements 

of This Proposed AD 

This product has been approved by 

the aviation authority of Canada and is 

approved for operation in the United 

States. Pursuant to our bilateral 

agreement with Canada, 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 provided by Transport 

Canada and determined the unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. This proposed AD would 

require replacing the FOHE fuel filter 

bypass poppet valve with a larger fuel 

filter bypass poppet valve within 25 

hours of the effective date of the 

proposed AD. 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 378 engines installed on 

airplanes of U.S. registry. We also 

estimate that it would take about 3.5 

work-hours per engine to comply with 

this proposed AD. The average labor 

rate is $85 per work-hour. Required 

parts would cost about $22,582 per 

engine. Based on these figures, we 

estimate the cost of the proposed AD on 

U.S. operators to be $8,648,451. 

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 [Amended] 

2. The FAA amends § 39.13 by adding 

the following new AD: 

Pratt & Whitney Canada Corp. (formerly 

Pratt & Whitney Canada, Inc.): Docket 

No. FAA–2010–0245; Directorate 

Identifier 2010–NE–15–AD. 

Comments Due Date 

(a) We must receive comments by July 1, 

2010. 

Affected Airworthiness Directives (ADs) 

(b) None. 

Applicability 

(c) This AD applies to Pratt & Whitney 

Canada Corp. PW615F–A turbofan engines 

with fuel/oil heat exchanger (FOHE) part 

number (P/N) 35C3778–01 or P/N 35C3778– 

02 installed. These engines are installed on, 

but not limited to, Cessna 510 (Mustang) 

airplanes. 

Reason 

(d) 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: 

A PW617F–E engine powered twin 

engined aircraft had recently experienced an 

uncommanded power reduction on one of its 

engines. Investigation showed that the Fuel 

Filter Bypass Valve poppet in the FOHE on 

that engine had worn through the housing 

seat, allowing unfiltered fuel and debris to 

contaminate the Fuel Metering Unit, 

resulting in fuel flow drop and subsequent 

power reduction. Pratt & Whitney Canada 

Corp. has confirmed that this is a dormant 

failure that could result in an unsafe 

condition. 

The PW615F–A engine Fuel Filter Bypass 

Valve is very similar to that of PW617F–E, 

but so far there have been no operational 

abnormalities reported due to subject valve 

failure on PW615F–A engines. However, 

mstockstill on DSKH9S0YB1PROD with PROPOSALS

Federal Register / Vol. 75, No. 94 / Monday, May 17, 2010 / Proposed Rules 27491 

evaluation by Pratt & Whitney Canada Corp. 

has confirmed similar dormant failure of 

worn through poppets of the subject valve on 

some 615F–A engine installations, which 

could affect both engines at the same time on 

an aircraft and may result in an unsafe 

condition. 

We are issuing this AD to prevent 

uncommanded power reduction, which 

could result in the inability to continue safe 

flight and safe landing. 

Actions and Compliance 

(e) Unless already done, replace the FOHE 

fuel filter bypass poppet valve with a larger 

fuel filter bypass poppet valve within 25 

hours of the effective date of the AD. Use 

paragraph 3.A. of the Accomplishment 

Instructions of Pratt & Whitney Canada Corp. 

ASB No. PW600–72–A63071, Revision 1, 

dated January 7, 2010, to do the replacement. 

Previous Credit 

(f) A fuel filter bypass poppet valve 

replacement performed before the effective 

date of this AD using Pratt & Whitney Canada 

Corp. ASB No. PW600–72–A63071, dated 

December 9, 2009, satisfies the replacement 

requirement of this AD. 

Alternative Methods of Compliance 

(g) The Manager, Engine Certification 

Office, FAA, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. 

Related Information 

(h) Refer to MCAI Transport Canada AD 

CF–2010–03, dated January 20, 2010, and 

Pratt & Whitney Canada Corp. ASB No. 

PW600–72–A63071, Revision 1, dated 

January 7, 2010, for related information. 

Contact Pratt & Whitney Canada Corp., 1000 

Marie-Victorin, Longueuil, Quebec, Canada, 

J4G 1A1; telephone 800–268–8000; fax 450– 

647–2888; Web site: http://www.pwc.ca, for a 

copy of this service information. 

(i) Contact Ian Dargin, Aerospace Engineer, 

Engine Certification Office, FAA, Engine and 

Propeller Directorate, 12 New England 

Executive Park; Burlington, MA 01803; email: ian.dargin@faa.gov; telephone (781) 

238–7178; fax (781) 238–7199, for more 

information about this AD. 

Issued in Burlington, Massachusetts, on 

May 10, 2010. 

Peter A. White, 

Assistant Manager, Engine and Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–11644 Filed 5–14–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0246; Directorate 

Identifier 2010–NE–16–AD] 

RIN 2120–AA64 

Airworthiness Directives; Pratt & 

Whitney Canada Corp. PW617F–E 

Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), 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) 

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: 

A PW617F–E engine powered twin 

engined aircraft had recently experienced an 

uncommanded power reduction on one of its 

engines. Investigation showed that the Fuel 

Filter Bypass Valve poppet in the Fuel Oil 

Heat Exchanger (FOHE) on that engine had 

worn through the housing seat, allowing 

unfiltered fuel and debris to contaminate the 

Fuel Metering Unit (FMU), resulting in fuel 

flow drop and subsequent power reduction. 

Pratt & Whitney Canada Corp. issued an 

Alert Service Bulletin (ASB) No. PW600–72– 

A66019 to inspect and replace any discrepant 

valve with the same type new valve. The 

inspection results confirmed that failure of a 

worn through poppet is dormant and it can 

affect both engines at the same time that 

could result in an unsafe condition on 

PW617F–E powered aircraft. 

We are proposing this AD to prevent 

uncommanded power reduction, which 

could result in the inability to continue 

safe flight and safe landing. 

DATES: We must receive comments on 

this proposed AD by July 1, 2010. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov and follow 

the instructions for sending your 

comments electronically. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 1200 

New Jersey Avenue, SE., West Building 

Ground Floor, Room W12–140, 

Washington, DC 20590–0001. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

• Fax: (202) 493–2251. 

Contact Pratt & Whitney Canada 

Corp., 1000 Marie-Victorin, Longueuil, 

Quebec, Canada, J4G 1A1; telephone 

800–268–8000; fax 450–647–2888; Web 

site: http://www.pwc.ca; for the service 

information identified in this proposed 

AD. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Operations office 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 Operations 

office (telephone (800) 647–5527) is the 

same as the Mail address provided in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: Ian 

Dargin, Aerospace Engineer, Engine 

Certification Office, FAA, Engine and 

Propeller Directorate, 12 New England 

Executive Park; Burlington, MA 01803; 

e-mail: ian.dargin@faa.gov; telephone 

(781) 238–7178; fax (781) 238–7199. 

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–2010–0246; Directorate Identifier 

2010–NE–16–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 based on 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 with FAA 

personnel concerning this proposed AD. 

Using the search function of the Web 

site, anyone can find and read the 

comments in any of our dockets, 

including, if provided, the name of the 

individual who sent the comment (or 

signed the comment on behalf of an 

association, business, labor union, etc.). 

You may review the DOT’s complete 

Privacy Act Statement in the Federal 

Register published on April 11, 2000 

(65 FR 19477–78). 

mstockstill on DSKH9S0YB1PROD with PROPOSALS