32460 Federal Register / Vol. 80, No. 110 / Tuesday, June 9, 2015 / Rules and Regulations 

(f) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Safety Management 

Group, FAA, may approve AMOCs for this 

AD. Send your proposal to: James Blyn, 

Aviation Safety Engineer, Regulations and 

Policy Group, Rotorcraft Directorate, FAA, 

2601 Meacham Blvd., Fort Worth, Texas 

76137; telephone (817) 222–5110; email 

james.blyn@faa.gov. 

(2) For operations conducted under a 14 

CFR part 119 operating certificate or under 

14 CFR part 91, subpart K, we suggest that 

you notify your principal inspector, or 

lacking a principal inspector, the manager of 

the local flight standards district office or 

certificate holding district office, before 

operating any aircraft complying with this 

AD through an AMOC. 

(g) Additional Information 

(1) Bell Alert Service Bulletin No. 206L– 

05–134, Revision A, dated April 9, 2007, 

which is not incorporated by reference, 

contains additional information about the 

subject of this AD. For service information 

identified in this AD, contact Bell Helicopter 

Textron Canada Limited, 12,800 Rue de 

l’Avenir, Mirabel, Quebec J7J1R4; telephone 

(450) 437–2862 or (800) 363–8023; fax (450) 

433–0272; or at http://

www.bellcustomer.com/files/. You may 

review a copy of the service information at 

the FAA, Office of the Regional Counsel, 

Southwest Region, 2601 Meacham Blvd., 

Room 663, Fort Worth, Texas 76137. 

(2) STC No. SR00036SE, amended October 

20, 1995; and reissued January 23, 2014, may 

be found on the Internet at http://

www.regulations.gov in Docket No. FAA– 

2013–0489. 

(3) The subject of this AD is addressed in 

Transport Canada Civil Aviation (TCCA) AD 

No. CF–2005–28R1, dated June 14, 2007. You 

may view the TCCA AD on the Internet at 

http://www.regulations.gov in Docket No. 

FAA–2013–0489. 

(h) Subject 

Joint Aircraft Service Component (JASC) 

Code: 7250, Turbine Section. 

Issued in Fort Worth, Texas, on May 29, 

2015. 

Lance T. Gant, 

Acting Directorate Manager, Rotorcraft 

Directorate, Aircraft Certification Service. 

[FR Doc. 2015–13852 Filed 6–8–15; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2014–1020; Directorate 

Identifier 2013–SW–078–AD; Amendment 

39–18172; AD 2015–11–09] 

RIN 2120–AA64 

Airworthiness Directives; Sikorsky 

Aircraft Corporation (Type Certificate 

Previously Held by Schweizer Aircraft 

Corporation) Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for 

Sikorsky Aircraft Corporation (type 

certificate previously held by Schweizer 

Aircraft Corporation) (Sikorsky) Model 

269D and Model 269D Configuration A 

helicopters. This AD requires reducing 

the life limit of the ring gear carrier 

assembly. This AD was prompted by 

cracks in the ring gear carrier assembly. 

The actions are intended to reduce the 

life of the ring gear carrier assembly to 

prevent failure of the main rotor 

transmission, loss of engine power to 

the main rotor, and subsequent loss of 

control of the helicopter. 

DATES: This AD is effective July 14, 

2015. 

ADDRESSES: For service information 

identified in this AD, contact Sikorsky 

Aircraft Corporation, Customer Service 

Engineering, 124 Quarry Road, 

Trumbull, CT 06611; telephone 1–800– 

Winged-S or 203–416–4299; email 

sikorskywcs@sikorsky.com. You may 

review a copy of the referenced service 

information at the FAA, Office of the 

Regional Counsel, Southwest Region, 

2601 Meacham Blvd., Room 663, Fort 

Worth, Texas 76137. 

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 economic 

evaluation, any comments received, and 

other information. The street address for 

the Docket Operations Office (phone: 

800–647–5527) is U.S. Department of 

Transportation, Docket Operations 

Office, M–30, West Building Ground 

Floor, Room W12–140, 1200 New Jersey 

Avenue SE., Washington, DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Norman Perenson, Aviation Safety 

Engineer, New York Aircraft 

Certification Office, Propulsion & 

Services Branch, FAA, 1600 Stewart 

Ave., Westbury, New York; telephone 

(516) 228–7337; email 

Norman.Perenson@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

On December 15, 2014, at 79 FR 

74037, the Federal Register published 

our notice of proposed rulemaking 

(NPRM), which proposed to amend 14 

CFR part 39 by adding an AD that 

would apply to Sikorsky Model 269D 

and Model 269D Configuration A 

helicopters with a certain partnumbered ring carrier assembly 

installed. The NPRM proposed to 

require reducing the life limit of the ring 

carrier assembly from 6,000 hours timein-service (TIS) to 5,000 hours TIS by 

revising the Airworthiness Limitations 

Section of the applicable maintenance 

manual and by removing from service 

any ring carrier assembly that exceeded 

the new life limit. The NPRM was 

prompted by the discovery of a crack in 

the ring gear carrier assembly, which 

extended around the entire 

circumference of the flange and 

intersected some of the bolt holes but 

did not propagate ‘‘bolt hole to bolt 

hole.’’ A metallurgical evaluation 

determined that fretting caused multiple 

origin fatigue cracking on the ring gear 

carrier assembly. The proposed 

requirements were intended to reduce 

the life of the ring gear carrier assembly 

to prevent failure of the main rotor 

transmission, loss of engine power to 

the main rotor, and subsequent loss of 

control of the helicopter. 

Comments 

We gave the public the opportunity to 

participate in developing this AD, but 

we did not receive any comments on the 

NPRM (79 FR 74037, December 15, 

2014). 

FAA’s Determination 

We have reviewed the relevant 

information and determined that an 

unsafe condition exists and is likely to 

exist or develop on other products of 

these same type designs and that air 

safety and the public interest require 

adopting the AD requirements as 

proposed. 

Related Service Information 

Sikorsky issued 269D Helicopter Alert 

Service Bulletin No. ASB DB–040A, 

Revision A, dated December 4, 2012, to 

implement a reduction in service life of 

the ring gear carrier assembly, part 

number 269A5194, from 6,000 flight 

hours to 5,000 flight hours. 


tkelley on DSK3SPTVN1PROD with RULES
Federal Register / Vol. 80, No. 110 / Tuesday, June 9, 2015 / Rules and Regulations 32461 

Costs of Compliance 

We estimate that this AD will affect 

16 helicopters of U.S. Registry. 

We estimate that operators may incur 

the following costs in order to comply 

with this AD. We estimate a minimal 

cost to change the life limit of the ring 

gear. If required, we estimate it would 

take 27.5 hours to replace a ring gear 

carrier assembly at $85 per work hour. 

Required parts would cost $7,591 for a 

total of $9,929 per helicopter. 

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 

This AD will not have federalism 

implications under Executive Order 

13132. This AD will 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 this AD: 

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); 

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. 

We prepared an economic evaluation 

of the estimated costs to comply with 

this 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. 

Adoption of the Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 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): 

2015–11–09 Sikorsky Aircraft Corporation 

(Type Certificate Previously Held By 

Schweizer Aircraft Corporation): 

Amendment 39–18172; Docket No. 

FAA–2014–1020; Directorate Identifier 

2013–SW–078–AD. 

(a) Applicability 

This AD applies to Sikorsky Aircraft 

Corporation Model 269D and Model 269D 

Configuration A helicopters with ring gear 

carrier assembly, part number (P/N) 

269A5194, installed, certificated in any 

category. 

(b) Unsafe Condition 

This AD defines the unsafe condition as a 

fatigue crack in a ring gear carrier assembly. 

This condition could result in failure of the 

main rotor transmission, loss of engine power 

to the main rotor, and subsequent loss of 

control of the helicopter. 

(c) Effective Date 

This AD becomes effective July 14, 2015. 

(d) Compliance 

You are responsible for performing each 

action required by this AD within the 

specified compliance time unless it has 

already been accomplished prior to that time. 

(e) Required Actions 

Before further flight: 

(1) Revise the Airworthiness Limitations 

Section of the applicable maintenance 

manual by reducing the life limit of the ring 

gear carrier assembly, P/N 269A5194, from 

6,000 hours time-in-service (TIS) to 5,000 

hours TIS. 

(2) Remove from service any ring gear 

carrier assembly, P/N 269A5194, with 5,000 

or more hours TIS. 

(f) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, New York Aircraft 

Certification Office, FAA, may approve 

AMOCs for this AD. Send your proposal to: 

Norman Perenson, Aviation Safety Engineer, 

New York Aircraft Certification Office, 

Propulsion & Services Branch, FAA, 1600 

Stewart Ave., Westbury, New York; 

telephone (516) 228–7337; email 

Norman.Perenson@faa.gov. 

(2) For operations conducted under a 14 

CFR part 119 operating certificate or under 

14 CFR part 91, subpart K, we suggest that 

you notify your principal inspector, or 

lacking a principal inspector, the manager of 

the local flight standards district office or 

certificate holding district office before 

operating any aircraft complying with this 

AD through an AMOC. 

(g) Additional Information 

Sikorsky 269D Helicopter Alert Service 

Bulletin No. ASB DB–040A, Revision A, 

dated December 4, 2012, which is not 

incorporated by reference, contains 

additional information about the subject of 

this AD. For service information identified in 

this AD, contact Sikorsky Aircraft 

Corporation, Customer Service Engineering, 

124 Quarry Road, Trumbull, CT 06611; 

telephone 1–800–Winged-S or 203–416– 

4299; email sikorskywcs@sikorsky.com. You 

may review a copy of information at the 

FAA, Office of the Regional Counsel, 

Southwest Region, 2601 Meacham Blvd., 

Room 663, Fort Worth, Texas 76137. 

(h) Subject 

Joint Aircraft Service Component (JASC) 

Code: 6300 Main Rotor Drive System. 

Issued in Fort Worth, Texas, on May 29, 

2015. 

Lance T. Gant, 

Acting Directorate Manager, Rotorcraft 

Directorate, Aircraft Certification Service. 

[FR Doc. 2015–13846 Filed 6–8–15; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2014–0493; Directorate 

Identifier 2013–SW–019–AD; Amendment 

39–18173; AD 2015–11–10] 

RIN 2120–AA64 

Airworthiness Directives; Sikorsky 

Aircraft Corporation (Sikorsky) Model 

Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for 

Sikorsky Model S–92A helicopters. This 

AD requires installing a main gearbox 

(MGB) failed pump sensor and vacuum 

switch wiring, installing an MGB oil 

auto bypass system, activating Aircraft 

Management System (AMS) 7.1 software 

to show a new visual warning, and 

installing updated enhanced ground 

proximity warning system (EGPWS) 

software that includes an aural 


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