This section of the FEDERAL REGISTER

contains notices to the public of the proposed

issuance of rules and regulations. The

purpose of these notices is to give interested

persons an opportunity to participate in the

rule making prior to the adoption of the final

rules.

Proposed Rules Federal Register

73147 

Vol. 80, No. 226 

Tuesday, November 24, 2015 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2015–4070; Directorate 

Identifier 2015–NE–31–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 adopt a new 

airworthiness directive (AD) for certain 

Turbomeca S.A. Arriel 1E2 turboshaft 

engines. This proposed AD was 

prompted by reports of uncommanded 

in-flight shutdowns (IFSDs). This 

proposed AD would require removing 

the tachometer box on affected engines. 

We are proposing this AD to prevent 

failure of the tachometer box, which 

could lead to failure of the engine, IFSD, 

and loss of control of the helicopter. 

DATES: We must receive comments on 

this proposed AD by January 25, 2016. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

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

instructions for submitting comments. 

• 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 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, 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 by searching for 

and locating Docket No. FAA–2015– 

4070; 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 

mandatory continuing airworthiness 

information (MCAI), the 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, 12 New England 

Executive Park, 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 proposed AD. Send your comments 

to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2015–4070; Directorate Identifier 

2015–NE–31–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 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 NPRM. 

Discussion 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, has issued EASA AD 2015– 

0175, dated August 24, 2015 (referred to 

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

unsafe condition for the specified 

products. The MCAI states: 

There have been reports of Arriel 1E2 

engines having experienced an 

uncommanded in-flight shut-down (IFSD) 

due to an untimely activation of the 

tachometer box shut-off system which was 

activated by the power turbine monitoring 

function of the tachometer box. 

This condition, if not corrected, could 

potentially lead to further cases of IFSD, 

possibly resulting in a forced landing. 

You may obtain further information 

by examining the MCAI in the AD 

docket on the Internet at http://

www.regulations.gov by searching for 

and locating Docket No. FAA–2015– 

4070. 

Related Service Information 

Turbomeca S.A. has issued 

Mandatory Service Bulletin No. 292 77 

0844, Version B, dated July 6, 2015. The 

service information describes 

procedures for removing pre-TU 369 

tachometer boxes. 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 of this NPRM. 

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 the European 

Community, EASA has 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 EASA and 

determined the unsafe condition exists 

and is likely to exist or develop on other 

products of the same type design. This 

NPRM would require removing the preTU 369 tachometer box from the engine. 

Costs of Compliance 

We estimate that this proposed AD 

affects 200 engines installed on 

helicopters of U.S. registry. We also 

estimate that it would take about 3 

hours per engine to comply with this 

proposed AD. The average labor rate is 

$85 per hour. Based on these figures, we 

estimate the cost of this proposed AD on 

U.S. operators to be $51,000. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

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73148 Federal Register / Vol. 80, No. 226 / Tuesday, November 24, 2015 / Proposed Rules 

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), 

(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 adding 

the following new airworthiness 

directive (AD): 

Turbomeca S.A.: Docket No. FAA–2015– 

4070; Directorate Identifier 2015–NE– 

31–AD. 

(a) Comments Due Date 

We must receive comments by January 25, 

2016. 

(b) Affected ADs 

None. 

(c) Applicability 

(1) This AD applies to Turbomeca S.A. 

Arriel 1E2 turboshaft engines with 

tachometer boxes with the following part 

number (P/N) and serial number (S/N) 

combinations: 

(i) P/N 9580116170—all S/Ns 

(ii) P/N 9580116260—all S/Ns 

(iii) P/N 9580116900—all S/Ns 

(iv) P/N 9580117110—all S/Ns 

(v) P/N 9580117550—all S/Ns 1499 and 

below with or without suffix letters and all 

S/Ns 1500 and above that do not contain the 

suffix letters EL. 

(2) This AD applies only to Turbomeca 

S.A. Arriel 1E2 turboshaft engines with 

tachometer boxes identified in paragraph 

(c)(1) of this AD that also have installed 

electrical connectors labeled as P10106, 

P10098, and P10108 or P11F, P13F, and 

P15F. 

(d) Reason 

This AD was prompted by reports of 

uncommanded in-flight shutdowns (IFSDs). 

We are issuing this AD to prevent failure of 

the tachometer box, which could lead to 

failure of the engine, IFSD, and loss of 

control of the helicopter. 

(e) Actions and Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(1) Within 1,600 flight hours after the 

effective date of this AD, remove the affected 

tachometer box from the engine. 

(2) Reserved. 

(f) Credit for Previous Action 

You may take credit for the action required 

by paragraph (e) of this AD if you performed 

the action before the effective date of this AD 

in accordance with Turbomeca S.A. MSB 292 

77 0844, Version A, dated March 4, 2015 or 

earlier version. 

(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, 12 New England 

Executive Park, 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 2015–0175, dated August 

24, 2015, which includes Mandatory Service 

Bulletin No. 292 77 0844, Version B, dated 

July 6, 2015, for related 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–2015–4070. 

(3) You may view this 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 

November 12, 2015. 

Colleen M. D’Alessandro, 

Directorate Manager, Engine & Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2015–29748 Filed 11–23–15; 8:45 am] 

BILLING CODE 4910–13–P 

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 adopt a new 

airworthiness directive (AD) for certain 

Turbomeca S.A. Arriel 2B, 2B1, 2C, 2C1, 

2C2, 2D, 2E, 2S1, and 2S2 turboshaft 

engines. This proposed AD was 

prompted by a report of an 

uncommanded in-flight shutdown of an 

Arriel 2 engine caused by rupture of the 

41-tooth gear, which forms part of the 

bevel gear in the engine accessory 

gearbox (AGB). This proposed AD 

would require inspection, and, 

depending on the results, removal of the 

engine AGB. We are proposing this AD 

to prevent failure of the engine AGB, 

which could lead to in-flight shutdown, 

damage to the engine, and damage to the 

aircraft. 

DATES: We must receive comments on 

this proposed AD by January 25, 2016. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

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

instructions for submitting comments. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 1200 

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