Federal Register / Vol. 75, No. 54 / Monday, March 22, 2010 / Proposed Rules 13451 

(b) Class 3 (Native) oil—a salable 

quantity of 980,265 pounds and an 

allotment percentage of 43 percent. 

Dated: March 16, 2010. 

David R. Shipman, 

Acting Administrator, Agricultural Marketing 

Service. 

[FR Doc. 2010–6187 Filed 3–19–10; 8:45 am] 

BILLING CODE 3410–02–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–27009; Directorate 

Identifier 2007–NE–02–AD] 

RIN 2120–AA64 

Airworthiness Directives; Turbomeca 

Arriel 2B1 Turboshaft Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to revise 

an existing airworthiness directive (AD) 

for Turbomeca Arriel 2B1 turboshaft 

engines. 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: Since 

the issuance of AD 2007–0126 

Turbome ́ca has released modification 

TU157 which consists in modifying the 

pressure relief valve of the HMU by 

introducing a damping device into the 

valve. Introduction of this device has 

demonstrated to decrease the pressure 

fluctuations in the system, therefore 

reducing significantly the risk of wear of 

the delta-P diaphragm fabric. This will 

delete the need for a periodical 

replacement of the delta-P diaphragm 

before overhaul of the HMU. The 

modification TU157 is therefore 

considered as the terminating action for 

this AD. 

We are proposing this AD to prevent 

the loss of automatic control mode 

coupled with the deteriorated 

performance of the backup mode, which 

can lead to the inability to continue safe 

flight, forced autorotation landing, or an 

accident. 

DATES: We must receive any comments 

on this proposed AD by April 21, 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. 

FOR FURTHER INFORMATION CONTACT: 

Kevin Dickert, Aerospace Engineer, 

Engine Certification Office, FAA, Engine 

& Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

e-mail: kevin.dickert@faa.gov; telephone 

(781) 238–7117; 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–2007–27009; Directorate Identifier 

2007–NE–02–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). 

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 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. 

Discussion 

On September 11, 2007, the FAA 

issued AD 2007–19–09, Amendment 

39–15200 (72 FR 53112, September 18, 

2007). That AD requires initial and 

repetitive replacement of the 

hydromechanical metering unit (HMU) 

with a serviceable HMU every 1,500 

operating hours. The European Aviation 

Safety Agency (EASA), which is the 

Technical Agent for the Member States 

of the European Community, has issued 

EASA Airworthiness Directive 2007– 

0126, dated May 7, 2007, (referred to 

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

unsafe condition for the specified 

products. The MCAI states: 

This AD is prompted by several reported 

cases of rupture of the constant delta 

pressure valve diaphragm on Arriel 2B1 

engines, due to the wear of the delta-P 

diaphragm fabric. Rupture can result in the 

loss of the automatic control mode of the 

helicopter, accompanied with a deterioration 

of the behavior of the auxiliary back-up mode 

(emergency mode). On a single-engine 

helicopter, the result may be an emergency 

landing or, at worst, an accident. 

This AD supersedes AD EASA AD 2007– 

0006 which required the removal from 

service of all the delta pressure valve 

diaphragms logging more than 2,000 hourssince-new. 

Since issuance of EASA AD 2007–0006, no 

further case of rupture of the constant delta 

pressure valve diaphragm has been reported 

on Arriel 2 engines. However, about 40 

additional diaphragms returning from service 

have been inspected by Turbomeca, and 

some signs of wear have been detected on 

diaphragms having logged less than 2,000 

hours. Based on the inspection results, it has 

been decided to decrease this limit from 

2,000 hours to 1,500 hours in order to further 

reduce the probability of delta-P diaphragm 

rupture. 

Actions Since AD 2007–19–09 Was 

Issued 

Since that AD was issued, the EASA 

has issued MCAI AD 2009–0091, dated 

May 4, 2009. The MCAI states: 

Since the issuance of AD 2007–0126 

Turbome ́ca has released modification TU157 

which consists in modifying the pressure 

relief valve of the HMU by introducing a 

damping device into the valve. 

Introduction of this device has 

demonstrated to decrease the pressure 

fluctuations in the system, therefore reducing 

significantly the risk of wear of the delta-P 

diaphragm fabric. This will delete the need 

for a periodical replacement of the delta-P 

diaphragm before overhaul of the HMU. The 

modification TU157 is therefore considered 

as the terminating action for this AD. 

This AD supersedes AD 2007–0126 by 

retaining the same requirements as in AD 

2007–0126 except that: 


emcdonald on DSK2BSOYB1PROD with PROPOSALS
13452 Federal Register / Vol. 75, No. 54 / Monday, March 22, 2010 / Proposed Rules 

• In addition to the ARRIEL 2B1 engines, 

applicability is extended to the ARRIEL 

2B1A engines, which share the same HMU 

design. 

• Applicability is limited to ARRIEL 2B1 

and 2B1A engines that do not incorporate 

modification TU157. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

Turbomeca S.A. has issued 

Mandatory Service Bulletin No. 292 73 

2818, Original Issue, dated October 18, 

2006 and Update 1, dated April 3, 2007. 

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 France, and is 

approved for operation in the United 

States. Pursuant to our bilateral 

agreement with France, they have 

notified us of the unsafe condition 

described in the MCAI referenced 

above. 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 initial and repetitive 

replacement of the HMU with a 

serviceable HMU every 1,500 hourssince-new, hours-since-last-overhaul 

(HSO), or since incorporation of 

Turbomeca Service Bulletin (SB) No. 

292 73 2105, whichever occurs later. 

Differences Between This AD and the 

MCAI or Service Information 

The MCAI applies to the ARRIEL 2B1 

and 2B1A engines. The ARRIEL 2B1A 

engine is not type certificated in the 

United States, so this proposed AD 

applies to the ARRIEL 2B1 engine 

model only. 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 103 products of U.S. 

registry. We also estimate that it would 

take about 0.75 work-hour per product 

to comply with this proposed AD. The 

average labor rate is $85 per work-hour. 

Required parts would cost about 

$10,550 per product. Based on these 

figures, we estimate the cost of the 

proposed AD on U.S. operators to be 

$1,093,216. 

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 have 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 that the proposed 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); and 

3. Would 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. See the ADDRESSES

section for a location to examine the 

regulatory evaluation. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the Federal Aviation Administration 

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 

removing Amendment 39–15200 (72 FR 

53112, September 18, 2007) and by 

adding a new airworthiness directive, to 

read as follows: 

Turbomeca: Docket No. FAA–2007–27009; 

Directorate Identifier 2007–NE–02–AD. 

Comments Due Date 

(a) The Federal Aviation Administration 

(FAA) must receive comments on this 

airworthiness directive (AD) action by April 

21, 2010. 

Affected ADs 

(b) This AD revises AD 2007–19–09. 

Applicability 

(c) This AD applies to Turbomeca ARRIEL 

2B1 turboshaft engines that don’t incorporate 

modification TU157. These engines are 

installed on, but not limited to, Eurocopter 

AS 350 B3 and EC 130 B4 helicopters. 

Reason 

(d) European Aviation Safety Agency 

(EASA) AD No. 2009–0091, dated May 4, 

2009, states: 

Since the issuance of AD 2007–0126 

Turbome ́ca has released modification TU157 

which consists in modifying the pressure 

relief valve of the HMU by introducing a 

damping device into the valve. Introduction 

of this device has demonstrated to decrease 

the pressure fluctuations in the system, 

therefore reducing significantly the risk of 

wear of the delta-P diaphragm fabric. This 

will delete the need for a periodical 

replacement of the delta-P diaphragm before 

overhaul of the HMU. The modification 

TU157 is therefore considered as the 

terminating action for this AD. 

We are issuing this AD to prevent the loss of 

automatic control mode coupled with the 

deteriorated performance of the backup 

mode, which can lead to the inability to 

continue safe flight, forced autorotation 

landing, or an accident. 

Actions and Compliance 

(e) Unless already done, do the following 

actions. 

(1) For ARRIEL 2B1 engines that 

incorporate modification TU157, no further 

action is required. 

(2) For all other ARRIEL 2B1 engines do 

the following: 

(i) Replace the hydromechanical metering 

unit (HMU) with a serviceable HMU before 

the HMU accumulates 1,500 hours-sincenew, hours-since-last-overhaul (HSO), or 

since incorporation of Turbomeca Service 

Bulletin (SB) No. 292 73 2105, whichever 

occurs later. 

(ii) Thereafter, replace the HMU with a 

serviceable HMU at every 1,500 hours-since 

new, since last overhaul, or since 

incorporation of Turbomeca SB No. 292 73 

2105, whichever occurs later. 

(iii) For the purposes of this AD, a 

serviceable HMU is an HMU fitted with a 

new constant delta P diaphragm in 

accordance with Turbomeca Mandatory 

Service Bulletin (MSB) No. 292 73 2818, 


emcdonald on DSK2BSOYB1PROD with PROPOSALS
Federal Register / Vol. 75, No. 54 / Monday, March 22, 2010 / Proposed Rules 13453 

Original Issue, Dated October 18, 2006, or 

Update No. 1, dated April 3, 2007. 

Optional Terminating Action 

(3) Replacing the HMU with an HMU that 

has been modified to TU157 terminates the 

repetitive requirement of paragraph (e)(2)(ii) 

of this AD. 

FAA AD Differences 

(f) This AD differs from the Mandatory 

Continuing Airworthiness Information 

(MCAI) because the MCAI applies to the 

ARRIEL 2B1 and 2B1A engines. The ARRIEL 

2B1A engine is not type certificated in the 

United States, so this proposed AD applies to 

the ARRIEL 2B1 engine model only. 

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) Contact Kevin Dickert, Aerospace 

Engineer, Engine Certification Office, FAA, 

Engine & Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; e-mail: kevin.dickert@faa.gov; 

telephone (781) 238–7117; fax (781) 238– 

7199, for more information about this AD. 

Issued in Burlington, Massachusetts on 

March 15, 2010. 

Francis A. Favara, 

Manager, Engine and Propeller Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–6179 Filed 3–19–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2010–0089; Airspace 

Docket No. 10–ASW–1] 

Proposed Amendment of Class E 

Airspace; Corpus Christi, TX 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This action proposes to 

amend Class E airspace in the Corpus 

Christi, TX area. Additional controlled 

airspace is necessary to accommodate 

new Standard Instrument Approach 

Procedures (SIAPs) at Aransas County 

Airport, Rockport, TX. The FAA is 

taking this action to enhance the safety 

and management of Instrument Flight 

Rules (IFR) operations at the airport. 

DATES: Comments must be received on 

or before May 6, 2010. 

ADDRESSES: Send comments on this 

proposal to the U.S. Department of 

Transportation, Docket Operations, 1200 

New Jersey Avenue, SE., West Building 

Ground Floor, Room W12–140, 

Washington, DC 20590–0001. You must 

identify the docket number FAA–2010– 

0089/Airspace Docket No. 10–ASW–1, 

at the beginning of your comments. You 

may also submit comments through the 

Internet at http://www.regulations.gov. 

You may review the public docket 

containing the proposal, any comments 

received, and any final disposition in 

person in the Dockets Office between 9 

a.m. and 5 p.m., Monday through 

Friday, except Federal holidays. The 

Docket Office (telephone 1–800–647– 

5527), is on the ground floor of the 

building at the above address. 

FOR FURTHER INFORMATION CONTACT: 

Scott Enander, Central Service Center, 

Operations Support Group, Federal 

Aviation Administration, Southwest 

Region, 2601 Meacham Blvd., Fort 

Worth, TX 76137; telephone: 817–321– 

7716. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

Interested parties are invited to 

participate in this proposed rulemaking 

by submitting such written data, views, 

or arguments, as they may desire. 

Comments that provide the factual basis 

supporting the views and suggestions 

presented are particularly helpful in 

developing reasoned regulatory 

decisions on the proposal. Comments 

are specifically invited on the overall 

regulatory, aeronautical, economic, 

environmental, and energy-related 

aspects of the proposal. 

Communications should identify both 

docket numbers and be submitted in 

triplicate to the address listed above. 

Commenters wishing the FAA to 

acknowledge receipt of their comments 

on this notice must submit with those 

comments a self-addressed, stamped 

postcard on which the following 

statement is made: ‘‘Comments to 

Docket No. FAA–2010–0089/Airspace 

Docket No. 10–ASW–1.’’ The postcard 

will be date/time stamped and returned 

to the commenter. 

Availability of NPRMs 

An electronic copy of this document 

may be downloaded through the 

Internet at http://www.regulations.gov. 

Recently published rulemaking 

documents can also be accessed through 

the FAA’s Web page at http:// 

www.faa.gov/airports_airtraffic/ 

air_traffic/publications/ 

airspace_amendments/. 

You may review the public docket 

containing the proposal, any comments 

received, and any final disposition in 

person in the Dockets Office (see 

ADDRESSES section for address and 

phone number) between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. An informal docket 

may also be examined during normal 

business hours at the office of the 

Central Service Center, 2601 Meacham 

Blvd, Fort Worth, TX 76137. 

Persons interested in being placed on 

a mailing list for future NPRMs should 

contact the FAA’s Office of Rulemaking, 

202–267–9677, to request a copy of 

Advisory Circular No. 11–2A, Notice of 

Proposed Rulemaking Distribution 

System, which describes the application 

procedure. 

The Proposal 

This action proposes to amend Title 

14, Code of Federal Regulations (14 

CFR), Part 71 by adding additional Class 

E airspace extending upward from 700 

feet above the surface in the Corpus 

Christi, TX airspace area, adding 

controlled airspace for SIAPs at Aransas 

County Airport, Rockport, TX. The 

addition of the RNAV (GPS) RWY 18 

SIAP at Aransas County Airport has 

created the need to extend Class E 

airspace to the north of the current 

airspace. Controlled airspace is needed 

for the safety and management of IFR 

operations at the airport. 

Class E airspace areas are published 

in Paragraph 6005 of FAA Order 

7400.9T, dated August 27, 2009, and 

effective September 15, 2009, which is 

incorporated by reference in 14 CFR 

71.1. The Class E airspace designation 

listed in this document would be 

published subsequently in the Order. 

The FAA has determined that this 

proposed regulation only involves an 

established body of technical 

regulations for which frequent and 

routine amendments are necessary to 

keep them operationally current. It, 

therefore, (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) does not warrant 

preparation of a Regulatory Evaluation 

as the anticipated impact is so minimal. 

Since this is a routine matter that will 

only affect air traffic procedures and air 

navigation, it is certified that this rule, 

when promulgated, will not have a 

significant economic impact on a 

substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

The FAA’s authority to issue rules 

regarding aviation safety is found in 

Title 49 of the U.S. Code. Subtitle 1, 

Section 106 describes the authority of 

the FAA Administrator. Subtitle VII, 


emcdonald on DSK2BSOYB1PROD with PROPOSALS