Federal Register / Vol. 81, No. 117 / Friday, June 17, 2016 / Proposed Rules 39601 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2015–3753; Directorate 

Identifier 2015–NE–26–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 

airworthiness directive (AD) 2016–04– 

12 that applies to certain Turbomeca 

S.A. Arriel 2B, 2B1, 2C, 2C1, 2C2, 2D, 

2E, 2S1, and 2S2 turboshaft engines. AD 

2016–04–12 requires spectrometric oil 

analysis (SOA) inspection of the engine 

accessory gearbox (AGB), and, 

depending on the results, removal of the 

engine AGB. Since we issued AD 2016– 

04–12, we determined that wear 

inspections of the engine AGB cover are 

also required. This proposed AD would 

require initial and repetitive inspections 

of the AGB, and wear inspections of the 

engine AGB cover. We are proposing 

this AD to prevent failure of the engine 

AGB, uncommanded in-flight shutdown 

(IFSD), damage to the engine, and 

damage to the helicopter. 

DATES: We must receive comments on 

this proposed AD by August 16, 2016. 

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 proposed AD, contact Turbomeca 

S.A., 40220 Tarnos, France; phone: 33 0 

5 59 74 40 00; fax: 33 0 5 59 74 45 15. 

You may view this service information 

at the FAA, Engine & Propeller 

Directorate, 1200 District Avenue, 

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 by searching for 

and locating Docket No. FAA–2015– 

3753; 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 

mandatory continuing airworthiness 

information, regulatory evaluation, any 

comments received, and other 

information. The 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: 

Philip Haberlen, Aerospace Engineer, 

Engine Certification Office, FAA, Engine 

& Propeller Directorate, 1200 District 

Avenue, Burlington, MA 01803; phone: 

781–238–7770; fax: 781–238–7199; 

email: philip.haberlen@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this NPRM. Send your comments to an 

address listed under the ADDRESSES

section. Include ‘‘Docket No. FAA– 

2015–3753; Directorate Identifier 2015– 

NE–26–AD’’ at the beginning of your 

comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this NPRM. We will consider 

all comments received by the closing 

date and may amend this NPRM 

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 NPRM. 

Discussion 

On February 18, 2016, we issued AD 

2016–04–12, Amendment 39–18406 (81 

FR 12583, March 10, 2016), (‘‘AD 2016– 

04–12’’) for certain Turbomeca S.A. 

Arriel 2B, 2B1, 2C, 2C1, 2C2, 2D, 2E, 

2S1, and 2S2 turboshaft engines. AD 

2016–04–12 requires an SOA 

inspection, and, depending on the 

results, removal of the engine AGB. AD 

2016–04–12 resulted from a report of an 

uncommanded IFSD of an Arriel 2S2 

engine caused by rupture of the 41-tooth 

gear, which forms part of the bevel gear 

in the engine AGB. We issued AD 2016– 

04–12 to prevent failure of the engine 

AGB, uncommanded IFSD, damage to 

the engine, and damage to the 

helicopter. 

Actions Since AD 2016–04–12 Was 

Issued 

Since we issued AD 2016–04–12, 

Turbomeca recommended that an 

engine AGB cover wear inspection be 

performed. Also, the European Aviation 

Safety Agency issued AD 2016–0055, 

dated March 17, 2016, which requires 

initial and repetitive SOA inspections of 

the AGB and initial and repetitive wear 

inspections of the engine AGB cover. 

Related Service Information Under 1 

CFR Part 51 

Turbomeca S.A. has issued 

Mandatory Service Bulletin No. 292 72 

2861, Version C, dated March 9, 2016. 

The service information describes 

procedures for performing periodic SOA 

and wear inspections of the engine 

AGB. This service information is 

reasonably available because the 

interested parties have access to it 

through their normal course of business 

or by the means identified in the 

ADDRESSES section. 

FAA’s Determination 

We are proposing this NPRM because 

we evaluated all the relevant 

information and determined the unsafe 

condition described previously is likely 

to exist or develop in other products of 

the same type design. 

Proposed AD Requirements 

This NPRM would require initial and 

repetitive SOA, wear inspections of the 

engine AGB cover, and AGB 

replacement based on the results of the 

inspections. 

Costs of Compliance 

We estimate that this proposed AD 

affects 250 engines installed on 

helicopters of U.S. registry. We also 

estimate that it would take 0.5 hours per 

engine to perform the SOA and 1 hour 

to perform the engine AGB cover wear 

inspection. The average labor rate is $85 

per hour. Required parts for inspection 

and analysis cost about $3,179 per 

engine. We estimate that 5 engines will 

require AGB replacement at a cost of 

$44,397 per engine. We also estimate 

that it would take about 2 hours to 

replace the engine AGB. Based on these 

figures, we estimate the cost of this 

proposed AD on U.S. operators to be 

$1,049,460. 

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 


sradovich on DSK3TPTVN1PROD with PROPOSALS
39602 Federal Register / Vol. 81, No. 117 / Friday, June 17, 2016 / Proposed Rules 

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 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. 

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) 

2016–04–12, Amendment 39–18406 (81 

FR 12583, March 10, 2016) (‘‘AD 2016– 

04–12’’), and adding the following new 

AD: 

Turbomeca S.A.: Docket No. FAA–2015– 

3753; Directorate Identifier 2015–NE– 

26–AD. 

(a) Comments Due Date 

We must receive comments by August 16, 

2016. 

(b) Affected ADs 

This AD supersedes AD 2016–04–12. 

(c) Applicability 

This AD applies to Turbomeca S.A. Arriel 

2B, 2B1, 2C, 2C1, 2C2, 2D, 2E, 2S1, and 2S2 

turboshaft engines with an engine accessory 

gearbox (AGB), part number 0292120650, 

with a machined front casing. 

(d) Unsafe Condition 

This AD was prompted by a report of an 

uncommanded in-flight shutdown (IFSD) of 

an Arriel 2S2 engine caused by rupture of the 

41-tooth gear, which forms part of the bevel 

gear in the engine AGB. We are issuing this 

AD to prevent failure of the engine AGB, 

uncommanded IFSD, damage to the engine, 

and damage to the helicopter. 

(e) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(1) Initial Spectrometric Oil Analysis (SOA) 

and Engine AGB Cover Wear Inspection 

(i) Perform an SOA and an engine AGB 

cover wear inspection before the engine AGB, 

module M01, exceeds 850 engine hours (EH) 

since new or since last overhaul (SLO), or 

within 50 EH after April 14, 2016, or before 

the next flight after the effective date of this 

AD, whichever occurs later. 

(ii) Reserved. 

(2) Repetitive Inspection Intervals 

(i) Repeat the SOA within every 100 EH 

since the last SOA. 

(A) For all affected engines, if the last SOA 

was performed before the effective date of 

this AD, and the aluminum concentration 

level is 0.8 parts per million (p/m) or greater, 

perform a wear inspection of the engine AGB 

cover within 50 EHs since last SOA or before 

the next flight after the effective date of this 

AD, whichever occurs later. 

(B) For all affected engines, if the last SOA 

was performed after the effective date of this 

AD, and the aluminum concentration level is 

0.8 p/m or greater, perform a wear inspection 

of the engine AGB cover within 20 EH since 

the last SOA. 

(ii) For Arriel 2E engines, repeat the engine 

AGB cover wear inspection within every 800 

EH since last inspection (SLI) if the SOA 

indicated the aluminum concentration level 

is less than 0.8 p/m. 

(iii) For all affected engines, except for 

Arriel 2E engines, repeat the engine AGB 

cover wear inspection within every 600 EH 

SLI if the SOA indicated the aluminum 

concentration level is less than 0.8 p/m. 

(3) Inspection Criteria 

(i) Use paragraph 2.4.2.1 and 2.4.2.2 of 

Turbomeca Mandatory Service Bulletin 

(MSB) No. 292 72 2861, Version C, dated 

March 9, 2016, to do the inspections required 

by paragraphs (e)(1) and (2) of this AD. 

(ii) Reserved. 

(4) Corrective Actions Based on the Results 

of the Most Recent Wear Inspection 

(i) If the wear measured from the most 

recent wear inspection is 0.15 mm or less, no 

further action is required. However, you must 

still comply with the repetitive inspection 

requirements of paragraph (e)(2) of this AD. 

(ii) If the most recent wear inspection was 

performed while the engine was in service, 

and the wear is greater than 0.15 mm, do the 

following: 

(A) If the wear measured from the most 

recent wear inspection is greater than 0.15 

mm, but 0.30 mm or less, remove the engine 

AGB from service within 200 EH SLI and 

replace with a part eligible for installation. 

(B) If the wear measured from the most 

recent wear inspection is greater than 0.30 

mm, but 0.40 mm or less, remove the engine 

AGB from service within 25 EH SLI and 

replace with a part eligible for installation. 

(C) If the wear measured from the most 

recent wear inspection is greater than 0.40 

mm, remove the engine AGB from service 

before further flight and replace with a part 

eligible for installation. 

(iii) If the most recent wear inspection was 

performed on the engine during an engine 

shop visit, and the wear is greater than 0.15 

mm, remove the engine AGB before further 

flight and replace with a part eligible for 

installation. 

(f) Definition 

For the purpose of this AD, an engine shop 

visit is defined as the induction of an engine 

into the shop for maintenance involving the 

separation of any major mating engine 

flanges, except that the separation of engine 

flanges solely for the purposes of 

transportation without subsequent engine 

maintenance does not constitute an engine 

shop visit. 

(g) Alternative Methods of Compliance 

(AMOCs) 

The Manager, Engine Certification Office, 

FAA, may approve AMOCs for this AD. Use 

the procedures found in 14 CFR 39.19 to 

make your request. You may email your 

request to: ANE-AD-AMOC@faa.gov. 

(h) Related Information 

(1) For more information about this AD, 

contact Philip Haberlen, Aerospace Engineer, 

Engine Certification Office, FAA, Engine & 

Propeller Directorate, 1200 District Avenue, 

Burlington, MA 01803; phone: 781–238– 

7770; fax: 781–238–7199; email: 

philip.haberlen@faa.gov. 

(2) Refer to MCAI European Aviation 

Safety Agency AD 2015–0055, dated March 

17, 2016, for more information. You may 

examine the MCAI in the AD docket on the 

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

searching for and locating it in Docket No. 

FAA–2015–3753. 

(3) Turbomeca S.A. MSB No. 292 72 2861, 

Version C, dated March 9, 2016, can be 


sradovich on DSK3TPTVN1PROD with PROPOSALS
Federal Register / Vol. 81, No. 117 / Friday, June 17, 2016 / Proposed Rules 39603 

obtained from Turbomeca S.A., using the 

contact information in paragraph (h)(4) of 

this AD. 

(4) For service information identified in 

this AD, contact Turbomeca S.A., 40220 

Tarnos, France; phone: 33 0 5 59 74 40 00; 

fax: 33 0 5 59 74 45 15. 

(5) You may view this service information 

at the FAA, Engine & Propeller Directorate, 

1200 District Avenue, Burlington, MA. For 

information on the availability of this 

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

Issued in Burlington, Massachusetts, on 

June 8, 2016. 

Colleen M. D’Alessandro, 

Manager, Engine & Propeller Directorate, 

Aircraft Certification Service. 

[FR Doc. 2016–14228 Filed 6–16–16; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2016–7046; Airspace 

Docket No. 16–ANM–3] 

Proposed Amendment of Class E 

Airspace, and Revocation of Class E 

Airspace; Miles City, MT 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This action proposes to 

modify Class E surface airspace, remove 

Class E airspace designated as an 

extension to the Class E surface area, 

and modify Class E airspace extending 

upward from 700 feet above the surface 

at Frank Wiley Field Airport, Miles City, 

MT. The FAA found it necessary to 

account for the rising terrain for the 

safety and management of Standard 

Instrument Approach Procedures for 

Instrument Flight Rules (IFR) operations 

at the airport. 

DATES: Comments must be received on 

or before August 1, 2016. 

ADDRESSES: Send comments on this 

proposal to the U.S. Department of 

Transportation, Docket Operations, 

M–30, West Building, Ground Floor, 

Room W12–140, 1200 New Jersey 

Avenue SE., Washington, DC 20590; 

telephone (202) 366–9826. You must 

identify FAA Docket No. FAA–2016– 

7046; Airspace Docket No. 16–ANM–3, 

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 

9:00 a.m. and 5:00 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. 

FAA Order 7400.9Z, Airspace 

Designations and Reporting Points, and 

subsequent amendments can be viewed 

online at http://www.faa.gov/air_traffic/ 

publications/. For further information, 

you can contact the Airspace Policy 

Group, Federal Aviation 

Administration, 800 Independence 

Avenue SW., Washington, DC 20591; 

telephone: 202–267–8783. The Order is 

also available for inspection at the 

National Archives and Records 

Administration (NARA). For 

information on the availability of FAA 

Order 7400.9Z at NARA, call 202–741– 

6030, or go to http://www.archives.gov/ 

federal_register/code_of_federalregulations/ibr_locations.html. 

FAA Order 7400.9, Airspace 

Designations and Reporting Points, is 

published yearly and effective on 

September 15. 

FOR FURTHER INFORMATION CONTACT: Tom 

Clark, Federal Aviation Administration, 

Operations Support Group, Western 

Service Center, 1601 Lind Avenue SW., 

Renton, WA 98057; telephone (425) 

203–4511. 

SUPPLEMENTARY INFORMATION: 

Authority for This Rulemaking 

The FAA’s authority to issue rules 

regarding aviation safety is found in 

Title 49 of the United States Code. 

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. This rulemaking is 

promulgated under the authority 

described in Subtitle VII, Part, A, 

Subpart I, Section 40103. Under that 

section, the FAA is charged with 

prescribing regulations to assign the use 

of airspace necessary to ensure the 

safety of aircraft and the efficient use of 

airspace. This regulation is within the 

scope of that authority as it would 

amend Class E airspace at Frank Wiley 

Field Airport, Miles City, MT. 

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–2016–7046; Airspace 

Docket No. 16–ANM–3.’’ 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 the 

ADDRESSES section for the address and 

phone number) between 9:00 a.m. and 

5:00 p.m., Monday through Friday, 

except federal holidays. An informal 

docket may also be examined during 

normal business hours at the Northwest 

Mountain Regional Office of the Federal 

Aviation Administration, Air Traffic 

Organization, Western Service Center, 

Operations Support Group, 1601 Lind 

Avenue SW., Renton, WA 98057. 

Persons interested in being placed on 

a mailing list for future NPRMs should 

contact the FAA’s Office of Rulemaking, 

(202) 267–9677, for a copy of Advisory 

Circular No. 11–2A, Notice of Proposed 

Rulemaking Distribution System, which 

describes the application procedure. 

Availability and Summary of 

Documents Proposed for Incorporation 

by Reference 

This document proposes to amend 

FAA Order 7400.9Z, Airspace 

Designations and Reporting Points, 

dated August 6, 2015, and effective 

September 15, 2015. FAA Order 

7400.9Z is publicly available as listed in 

the ADDRESSES section of this document. 

FAA Order 7400.9Z lists Class A, B, C, 

D, and E airspace areas, air traffic 

service routes, and reporting points. 

The Proposal 

The FAA is proposing an amendment 

to Title 14 Code of Federal Regulations 

(14 CFR) Part 71 to modify Class E 

surface airspace, remove Class E 

airspace designated as an extension to 

Class E surface area, and modify Class 


sradovich on DSK3TPTVN1PROD with PROPOSALS