17084 Federal Register / Vol. 75, No. 64 / Monday, April 5, 2010 / Proposed Rules 

Dated: March 31, 2010. 

Mary Rupp, 

Secretary of the Board. 

[FR Doc. 2010–7655 Filed 4–2–10; 8:45 am] 

BILLING CODE 7535–01–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0308; Directorate 

Identifier 2010–NE–17–AD] 

RIN 2120–AA64 

Airworthiness Directives; Thielert 

Aircraft Engines GmbH (TAE) Model 

TAE 125–01 Reciprocating 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: Service has shown that the 

small outlet of the blow-by oil 

separators, part number 02–7250– 

18100R1; 02–7250–18100R2; 02–7250– 

18100R3; 02–7250–18100R4; 02–7250– 

18300R1; 02–7250–18300R2; 02–7250– 

18300R3; 02–7250–18300R4; or 02– 

7250–18300R5, may cause a blow-by gas 

pressure increase inside the crankcase 

of the engine in excess of the oil seal 

design pressure limits. Leaking engine 

oil may adversely affect the gearbox 

clutch or the engine lubrication system. 

This condition, if not corrected, could 

lead to in-flight cases of engine power 

loss or ultimately, shutdown. We are 

proposing this AD to prevent loss of 

engine power or uncommanded engine 

shutdown during flight due to excessive 

crankcase blow-by gas pressure. 

DATES: We must receive comments on 

this proposed AD by May 20, 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 Thielert Aircraft Engines 

GmbH, Platanenstrasse 14 D–09350, 

Lichtenstein, Germany, telephone: +49– 

37204–696–0; fax: +49–37204–696–55; 

e-mail: info@centurion-engines.com 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 (phone (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: 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. 

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–2010–0308; Directorate Identifier 

2010–NE–17–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). 

Discussion 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, has issued AD 2010–0020, 

dated February 8, 2010 (referred to after 

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

condition for the specified products. 

The MCAI states: 

Service has shown that the small outlet of 

the blow-by separators, part number 02– 

7250–18100R1; 02–7250–18100R2; 02–7250– 

18100R3; 02–7250–18100R4; 02–7250– 

18300R1; 02–7250–18300R2; 02–7250– 

18300R3; 02–7250–18300R4; or 02–7250– 

18300R5, may cause a blow-by gas pressure 

increase inside the crankcase of the engine in 

excess of the oil seal design pressure limits. 

Leaking engine oil may adversely affect the 

gearbox clutch or the engine lubrication 

system. This condition, if not corrected, 

could lead to in-flight cases of engine power 

loss or ultimately, shutdown. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

TAE has issued Service Bulletin No. 

TM TAE 125–0019, Revision 1, dated 

March 5, 2009. 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 Germany and is 

approved for operation in the United 

States. Pursuant to our bilateral 

agreement with Germany, EASA has 

notified us of the unsafe condition 

described in the MCAI. We are 

proposing this AD because we evaluated 

all information provided by EASA 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 removing 

from service certain part number blowby oil separators, within the next 110 

flight hours after the effective date of the 

proposed AD. 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 250 engines installed on 

airplanes of U.S. registry. We also 

estimate that it would take about 1.5 

work-hours per engine to comply with 

this proposed AD. The average labor 

rate is $85 per work-hour. Required 

parts would cost about $1,500 per 

engine. Based on these figures, we 


srobinson on DSKHWCL6B1PROD with PROPOSALS
Federal Register / Vol. 75, No. 64 / Monday, April 5, 2010 / Proposed Rules 17085 

estimate the cost of the proposed AD on 

U.S. operators to be $406,875. 

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: 

Thielert Aircraft Engines GmbH: Docket No. 

FAA–2010–0308; Directorate Identifier 

2010–NE–17–AD. 

Comments Due Date 

(a) We must receive comments by May 20, 

2010. 

Affected Airworthiness Directives (ADs) 

(b) None. 

Applicability 

(c) This AD applies to Thielert Aircraft 

Engines GmbH (TAE) model TAE 125–01 

reciprocating engines with any of the 

following part number blow-by oil separators 

installed: 

TABLE 1—PART NUMBERS OF AFFECTED BLOW-BY OIL SEPARATORS

02–7250–18100R1 02–7250–18100R2 02–7250–18100R3. 

02–7250–18100R4 02–7250–18300R1 02–7250–18300R2. 

02–7250–18300R3 02–7250–18300R4 02–7250–18300R5. 

These engines are installed in, but not 

limited to, Diamond Aircraft Industries 

Model DA 40, Piper PA–28–161 

(Supplemental Type Certificate (STC) No. 

SA03303AT), and Cessna 172 (STC No. 

SA01303WI) airplanes. 

Reason 

(d) Service has shown that the small outlet 

of the blow-by oil separators, part number 

02–7250–18100R1; 02–7250–18100R2; 02– 

7250–18100R3; 02–7250–18100R4; 02–7250– 

18300R1; 02–7250–18300R2; 02–7250– 

18300R3; 02–7250–18300R4; or 02–7250– 

18300R5, may cause a blow-by gas pressure 

increase inside the crankcase of the engine in 

excess of the oil seal design pressure limits. 

Leaking engine oil may adversely affect the 

gearbox clutch or the engine lubrication 

system. This condition, if not corrected, 

could lead to in-flight cases of engine power 

loss or ultimately, shutdown. 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. We are issuing this AD to prevent 

loss of engine power or uncommanded 

engine shutdown during flight due to 

excessive crankcase blow-by gas pressure. 

Actions and Compliance 

(e) Unless already done, do the following 

actions. 

(1) Remove the blow-by oil separators 

listed by part number in Table 1 of this AD 

within the next 110 flight hours after the 

effective date of this AD. 

(2) Use the Measures section of TAE 

Service Bulletin No. TM TAE 125–0019, 

Revision 1, dated March 5, 2009, to do the 

removal from service. 

FAA AD Differences 

(f) None. 

Alternative Methods of Compliance 

(AMOCs) 

(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 European Aviation Safety 

Agency AD 2010–0020, dated February 8, 

2010, and TAE Service Bulletin No. TM TAE 

125–0019, Revision 1, dated March 5, 2009, 

for related information. Contact Thielert 

Aircraft Engines GmbH, Platanenstrasse 14 

D–09350, Lichtenstein, Germany, telephone: 

+49–37204–696–0; fax: +49–37204–696–55; 

e-mail: info@centurion-engines.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 

March 30, 2010. 

Peter A. White, 

Assistant Manager, Engine and Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–7590 Filed 4–2–10; 8:45 am] 

BILLING CODE 4910–13–P 


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