43552 Federal Register / Vol. 77, No. 143 / Wednesday, July 25, 2012 / Proposed Rules 

(a) Comments Due Date 

The FAA must receive comments on this 

AD action by September 24, 2012. 

(b) Affected ADs 

This AD supersedes AD 2003–12–14, 

Amendment 39–13199 (68 FR 36900, June 

20, 2003). 

(c) Applicability 

This AD applies to all Turbomeca S.A. 

Arriel 1A, 1A1, 1A2, 1B, 1C, 1C1, 1C2, 1D, 

1D1, 1E2, 1K1, 1S, and 1S1 turboshaft 

engines that have not incorporated 

Turbomeca S.A. Modification TU360. 

(d) Unsafe Condition 

This AD was prompted by in-service 

experience showing that dust inside the gas 

generator hollow shaft may be found when 

the axial compressor wheel has less erosion 

than initially assessed. We are issuing this 

AD to prevent an unbalance of the gas 

generator rotating assembly, which may lead 

to deterioration of the gas generator rear 

bearing and uncommanded engine 

shutdown. 

(e) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(1) Within 50 engine hours after the 

effective date of this AD, determine the 

engine history and perform the maintenance 

actions at the specified schedules. Use 

paragraphs 1.A. and 2.A. through 2.C. of 

Turbomeca S.A. Alert Mandatory Service 

Bulletin (MSB) No. A292 72 0230 Version C, 

dated February 29, 2012 to perform the 

maintenance actions and to establish the 

cleaning schedule. 

(2) If during any of the cleanings, the dust 

weight collected inside the gas generator 

hollow shaft is more than 8 grams, replace 

the gas generator rear bearing before further 

flight. 

(3) After the effective date of this AD, if 

there are any changes in accordance with 

paragraph 1.A.(1)(a)1.3 of Turbomeca S.A. 

Alert MSB No. A292 72 0230, Version C, 

dated February 29, 2012, within 50 engine 

hours time-in-service after such a change, 

accomplish the actions as specified in 

paragraph (e)(1) and (e)(2) in this AD. 

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

not install any gas generator (module M03) 

on an engine unless it is in compliance with 

this AD. 

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

not install any gas generator rear bearing that 

has operated on an engine with a hollow 

shaft that has been found to have a dust 

weight more than 8 grams. 

(f) Optional Terminating Action 

As optional terminating action to the 

repetitive actions in this AD, modify the 

engine by incorporating Turbomeca S.A. 

Modification TU360. 

(g) Alternative Methods of Compliance 

(AMOCs) 

The Manager, Engine Certification Office, 

may approve AMOCs for this AD. Use the 

procedures found in 14 CFR 39.19 to make 

your request. 

(h) Related Information 

(1) For more information about this AD, 

contact Rose Len, Aerospace Engineer, 

Engine Certification Office, FAA, Engine & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7772; fax: 781–238–7199; 

email: rose.len@faa.gov. 

(2) Refer to European Aviation Safety 

Agency AD 2012–0071, dated April 26, 2012, 

and Turbomeca S.A. Alert MSB No. A292 72 

0230, Version C, dated February 29, 2012, for 

related information. 

(3) For service information identified in 

this AD, contact Turbomeca S.A., 40220 

Tarnos, France; phone: 33 05 59 74 40 00; 

fax: 33 05 59 74 45 15. You may review 

copies of the referenced service information 

at the FAA, Engine & Propeller Directorate, 

12 New England Executive Park, Burlington, 

MA. For information on the availability of 

this material at the FAA, call 781–238–7125. 

Issued in Burlington, Massachusetts, on 

July 20, 2012. 

Peter A. White, 

Manager, Engine & Propeller Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–18155 Filed 7–24–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–0681; Directorate 

Identifier 2008–NE–13–AD] 

RIN 2120–AA64 

Airworthiness Directives; Turbomeca 

S.A. Turboshaft Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to supersede an 

existing airworthiness directive (AD) 

that applies to all Turbomeca S.A. Arriel 

1E2, 1S, and 1S1 turboshaft engines. 

The existing AD currently requires a one 

time inspection and torque check of a 

certain 3-way union plug installed on 

all fuel control units (FCUs). Since we 

issued that AD, the applicability has 

been reduced to certain FCUs and the 

referenced service bulletin has been 

updated with additional detailed 

information to identify the noncompliant ‘‘red disk’’ plug. This 

proposed AD would still require a one 

time inspection and torque check of the 

3-way union plug, would require 

replacement of the plug before further 

flight if it is found to be non-compliant, 

and would prohibit installation of FCUs 

that have not passed the 3-way union 

plug inspection and torque check. We 

are proposing this AD to prevent fuel 

leaks, which could result in a fire and 

damage to the helicopter. 

DATES: We must receive comments on 

this proposed AD by September 24, 

2012. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, 

M–30, West Building Ground Floor, 

Room W12–140, 1200 New Jersey 

Avenue SE., Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 

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

Friday, except Federal holidays. 

For service information identified in 

this AD, contact Turbomeca S.A., 40220 

Tarnos, France; phone: 33 05 59 74 40 

00; fax: 33 05 59 74 45 15. You may 

review copies of the referenced service 

information at the FAA, Engine & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA. For 

information on the availability of this 

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; 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 proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Office 

(phone: 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: Rose 

Len, Aerospace Engineer, Engine 

Certification Office, FAA, Engine & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7772; fax: 781–238– 

7199; email: rose.len@faa.gov. 

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–2008–0681; Directorate Identifier 

2008–NE–13–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 


TKELLEY on DSK3SPTVN1PROD with PROPOSALS
Federal Register / Vol. 77, No. 143 / Wednesday, July 25, 2012 / Proposed Rules 43553 

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 because of 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 we receive 

about this proposed AD. 

Discussion 

On January 21, 2009, we issued AD 

2009–03–04, Amendment 39–15805 (74 

FR 7796, February 20, 2009), for all 

Turbomeca S.A. Arriel 1E2, 1S, and 1S1 

turboshaft engines. That AD requires a 

one time inspection and torque check of 

a certain 3-way union plug installed on 

all FCUs. That AD resulted from 

Turbomeca S.A. informing the European 

Aviation Safety Agency (EASA) of a 

case of a ‘‘red disk’’ plug, adapted for 

bench testing, which was installed on 

the FCU on an engine and released for 

service operation. That engine 

experienced an in-service high pressure 

leak event (at the fuel pump outlet) due 

to cracking of this ‘‘red disk’’ plug. That 

leak could lead to in-flight flame-out 

and/or possibly a fire. We issued that 

AD to prevent fuel leaks, which could 

result in a fire and damage to the 

helicopter. 

Actions Since Existing AD Was Issued 

Since we issued AD 2009–03–04, 

Turbomeca S.A. has identified FCUs 

that are not affected, which are FCUs 

that have a manufacturing date 

indicated on the identification plate 

later than March 31, 2008 and/or that 

have a latest repair/overhaul date 

recorded on the FCU log card later than 

March 31, 2008. 

Relevant Service Information 

We reviewed Turbomeca S.A. 

Mandatory Service Bulletin (MSB) No. 

292 73 0817, Version D, dated February 

29, 2012. The MSB describes procedures 

for performing a one time inspection 

and torque check of a certain 3-way 

union plug installed on certain FCUs. 

FAA’s Determination 

We are proposing this AD because we 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop in a smaller population of 

products of the same type design. 

Proposed AD Requirements 

This proposed AD would retain all of 

the requirements of AD 2009–03–04, (74 

FR 7796, February 20, 2009), including 

those requirements related to a one time 

inspection and torque check. However, 

this proposed AD would reduce the 

affected population of FCU 3-way union 

plugs, require plug replacement before 

further flight if it fails the inspection, 

and would prohibit installation of FCUs 

that have not passed the 3-way union 

plug inspection and torque check. 

Costs of Compliance 

Based on updated service 

information, we estimate that this 

proposed AD would affect about 179 

engines installed on helicopters of U.S. 

registry. We also estimate that it would 

take about 0.5 work-hour per product to 

comply with this proposed AD. The 

average labor rate is $85 per work-hour. 

Required parts would cost about $14 per 

engine. Based on these figures, we 

estimate the cost of the proposed AD on 

U.S. operators to be $10,114. Our cost 

estimate is exclusive of possible 

warranty coverage. 

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 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), 

(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. 

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 

removing airworthiness directive (AD) 

2009–03–04, Amendment 39–15805 (74 

FR 7796, February 20, 2009), and adding 

the following new AD: 

Turbomeca S.A.: Docket No. FAA–2008– 

0681; Directorate Identifier 2008–NE– 

13–AD. 

(a) Comments Due Date 

The FAA must receive comments on this 

AD action by September 24, 2012. 

(b) Affected ADs 

This AD supersedes AD 2009–03–04, 

Amendment 39–15805 (74 FR 7796, February 

20, 2009). This AD was prompted by 

Turbomeca S.A. informing us that FCUs 

manufactured, repaired, or overhauled after 

March 31, 2008, do not require inspection. 

(c) Applicability 

This AD applies to Turbomeca S.A. models 

Arriel 1E2, 1S, and 1S1 turboshaft engines 

with fuel control units (FCUs) manufactured, 

repaired, or overhauled on or before March 

31, 2008. 

(d) Unsafe Condition 

Turbomeca S.A. informed the European 

Aviation Safety Agency (EASA) of a case of 

a ‘‘red disk’’ plug, adapted for bench testing, 

which was installed on the FCU on an engine 

and released for service operation. An engine 

experienced an in-service high pressure leak 

event (at the fuel pump outlet) due to 

cracking of this ‘‘red disk’’ plug. This leak 

could lead to in-flight flame-out and/or 

possibly a fire. This AD was prompted by 

Turbomeca S.A. informing us that FCUs 

manufactured, repaired, or overhauled after 

March 31, 2008, do not require inspection. 

We are issuing this AD to prevent fuel leaks, 

which could result in a fire and damage to 

the helicopter. 


TKELLEY on DSK3SPTVN1PROD with PROPOSALS
43554 Federal Register / Vol. 77, No. 143 / Wednesday, July 25, 2012 / Proposed Rules 

(e) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. Within 100 operating hours from the 

effective date of this AD, perform a one time 

inspection of the plug installed in the FCU 

3-way union, part number 9 932 30 706 0. 

(1) If the FCU 3-way union plug is 

unpainted, verify the plug is torqued to 

between 1.3 and 1.5 daN.m, in accordance 

with Turbomeca S.A. Mandatory Service 

Bulletin (MSB) No. 292 73 0817, Version D, 

dated February 29, 2012, before further flight. 

(2) If the FCU 3-way union plug has any 

red paint on it, replace it with a serviceable 

plug and torque the plug to between 1.3 and 

1.5 daN.m, in accordance with Turbomeca 

S.A. MSB No. 292 73 0817, Version D, dated 

February 29, 2012, before further flight. 

(f) Installation Prohibition 

After the effective date of this AD, do not 

install any FCU manufactured, repaired, or 

overhauled on or before March 31, 2008, onto 

any Turbomeca S.A. model Arriel 1E2, 1S, 

and 1S1 turboshaft engine, unless the FCU 3- 

way union plug has passed the one time 

inspection and torque check required by this 

AD. 

(g) Credit for Previous Actions 

If you performed the inspections and 

corrective actions required by this AD using 

the original issue or any version up to and 

including Version D of Turbomeca S.A. MSB 

No. 292 73 0817 before the effective date of 

this AD, you have met the requirements of 

this AD. 

(h) Alternative Methods of Compliance 

(AMOCs) 

The Manager, Engine Certification Office, 

may approve AMOCs for this AD. Use the 

procedures found in 14 CFR 39.19 to make 

your request. 

(i) Related Information 

(1) For more information about this AD, 

contact Rose Len, Aerospace Engineer, 

Engine Certification Office, FAA, Engine & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

phone: 781–238–7772; fax: 781–238–7199; 

email: rose.len@faa.gov. 

(2) For service information identified in 

this AD, contact Turbomeca S.A., 40220 

Tarnos, France; phone: 33 05 59 74 40 00; 

fax: 33 05 59 74 45 15. You may review 

copies of the referenced service information 

at the FAA, Engine & Propeller Directorate, 

12 New England Executive Park, Burlington, 

MA. For information on the availability of 

this material at the FAA, call 781–238–7125. 

Issued in Burlington, Massachusetts, on 

July 5, 2012. 

Peter A. White, 

Manager, Engine & Propeller Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–18050 Filed 7–24–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF HOMELAND 

SECURITY 

Coast Guard 

33 CFR Part 165 

[Docket No. USCG–2012–0191] 

RIN 1625–AA11 

Regulated Navigation Area; Columbus 

Day Weekend, Biscayne Bay, Miami, 

FL 

AGENCY: Coast Guard, DHS. 

ACTION: Notice of proposed rulemaking. 

SUMMARY: The Coast Guard proposes to 

establish a regulated navigation area on 

Biscayne Bay in Miami, Florida. The 

regulated navigation area will be 

enforced annually from Saturday of the 

second week through Monday of the 

third week in October (Columbus Day 

weekend). The regulated navigation area 

will include certain waters of Biscayne 

Bay between Rickenbacker Causeway 

Bridge and Coon Point on Elliot Key. All 

vessels within the regulated navigation 

area would be: required to transit the 

regulated navigation area at no more 

than 15 knots; subject to control by the 

Coast Guard; and required to follow the 

instructions of all law enforcement 

vessels in the area. This regulated 

navigation area is necessary to ensure 

the safe transit of vessels and to protect 

persons, vessels, and the marine 

environment within the regulated 

navigation area during the Columbus 

Day weekend. 

DATES: Comments and related material 

must be received by the Coast Guard on 

or before August 24, 2012. Requests for 

public meetings must be received by the 

Coast Guard August 14, 2012. 

ADDRESSES: You may submit comments 

identified by docket number USCG– 

2012–0191 using any one of the 

following methods: 

(1) Federal eRulemaking Portal: 

http://www.regulations.gov. 

(2) Fax: (202) 493–2251. 

(3) Mail or Delivery: Docket 

Management Facility (M–30), U.S. 

Department of Transportation, West 

Building Ground Floor, Room W12–140, 

1200 New Jersey Avenue SE., 

Washington, DC 20590–0001. Deliveries 

accepted between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal 

holidays. The telephone number is (202) 

366–9329. 

See the ‘‘Public Participation and 

Request for Comments’’ portion of the 

SUPPLEMENTARY INFORMATION section 

below for further instructions on 

submitting comments. To avoid 

duplication, please use only one of 

these three methods. 

FOR FURTHER INFORMATION CONTACT: If 

you have questions on this proposed 

rule, call or email Lieutenant Jennifer S. 

Makowski, Sector Miami Prevention 

Department, U.S. Coast Guard; 

telephone (305) 535–8724, email 

Jennifer.S.Makowski@uscg.mil. If you 

have questions on viewing or submitting 

material to the docket, call Renee V. 

Wright, Program Manager, Docket 

Operations, telephone (202) 366–9826. 

SUPPLEMENTARY INFORMATION: 

Table of Acronyms 

DHS Department of Homeland Security 

FR Federal Register 

NPRM Notice of Proposed Rulemaking 

A. Public Participation and Request for 

Comments 

We encourage you to participate in 

this rulemaking by submitting 

comments and related materials. All 

comments received will be posted 

without change to http:// 

www.regulations.gov and will include 

any personal information you have 

provided. 

1. Submitting Comments 

If you submit a comment, please 

include the docket number for this 

rulemaking (USCG–2012–0191), 

indicate the specific section of this 

document to which each comment 

applies, and provide a reason for each 

suggestion or recommendation. You 

may submit your comments and 

material online at http:// 

www.regulations.gov, or by fax, mail, or 

hand delivery, but please use only one 

of these means. If you submit a 

comment online, it will be considered 

received by the Coast Guard when you 

successfully transmit the comment. If 

you fax, hand deliver, or mail your 

comment, it will be considered as 

having been received by the Coast 

Guard when it is received at the Docket 

Management Facility. We recommend 

that you include your name and a 

mailing address, an email address, or a 

telephone number in the body of your 

document so that we can contact you if 

we have questions regarding your 

submission. 

To submit your comment online, go to 

http://www.regulations.gov, type the 

docket number (USCG–2012–0191) in 

the ‘‘SEARCH’’ box and click 

‘‘SEARCH.’’ Click on ‘‘Submit a 

Comment’’ on the line associated with 

this rulemaking. 

If you submit your comments by mail 

or hand delivery, submit them in an 

unbound format, no larger than 81⁄2 by 

11 inches, suitable for copying and 


TKELLEY on DSK3SPTVN1PROD with PROPOSALS