Federal Register / Vol. 82, No. 183 / Friday, September 22, 2017 / Proposed Rules 44357 

delegated the authority to issue ADs 

applicable to engines, propellers, and 

appliances to the Manager, Engine and 

Propeller Standards Branch, Policy and 

Innovation Division. 

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): 

GE Aviation Czech s.r.o. (Type Certificate 

previously held by WALTER Engines 

a.s., Walter a.s., and MOTORLET a.s.): 

Docket No. FAA–2017–0658; Product 

Identifier 2017–NE–20–AD. 

(a) Comments Due Date 

We must receive comments by November 

6, 2017. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to certain GE Aviation 

Czech s.r.o. M601D–11, M601E–11, M601E– 

11A, M601E–11AS, M601E–11S, and M601F 

turboprop engines, with power turbine (PT) 

rotor disks, part number (P/N) M601–3220.6 

or P/N M601–3220.7, installed. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7250, Turbine Section. 

(e) Reason 

This AD was prompted by a review that 

determined that PT rotors with certain disks, 

P/N M601–3220.6 or P/N M601–3220.7, have 

less overspeed margin than originally 

declared during product certification. We are 

issuing this AD to prevent failure of the PT 

rotor, uncontained release of the PT rotor 

disk, damage to the engine, and damage to 

the airplane. 

(f) Compliance 

(1) Comply with this AD within the 

compliance times specified, unless already 

done. 

(2) After the effective date of this AD, 

remove the affected PT disk from service 

during the next engine shop visit, or within 

5 years, whichever occurs first. 

(g) Installation Prohibition 

After the effective date of this AD, do not 

install an affected PT disk on any engine. 

(h) Definition 

For the purpose of this AD, an engine shop 

visit is when an engine is overhauled or 

rebuilt. 

(i) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, ECO Branch, FAA, has 

the authority to approve AMOCs for this AD 

if requested using the procedures found in 14 

CFR 39.19. In accordance with 14 CFR 39.19, 

send your request to your principal inspector 

or local Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the certification office, 

send it to the attention of the person 

identified in paragraph (j)(1) of this AD. You 

may email your request to: ANE-AD-AMOC@

faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(j) Related Information 

(1) For more information about this AD, 

contact Robert Green, Aerospace Engineer, 

ECO Branch, FAA, 1200 District Avenue, 

Burlington, MA 01803; phone: 781–238– 

7754; fax: 781–238–7199; email: 

robert.green@faa.gov. 

(2) Refer to MCAI European Aviation 

Safety Agency AD 2017–0100, dated June 8, 

2017, 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–2017–0658. 

(3) GE Aviation Czech s.r.o. Alert Service 

Bulletin No. ASB–M601E–72–50–00–0069, 

ASB–M601D–72–50–00–0052, ASB–M601F– 

72–50–00–0035, ASB–M601T–72–50–00– 

0028, and ASB–M601Z–72–50–00–0038, 

(single document), dated February 21, 2017, 

can be obtained from GE Aviation Czech 

s.r.o, using the contact information in 

paragraph (j)(4) of this proposed AD. 

(4) For service information identified in 

this proposed AD, contact GE Aviation Czech 

s.r.o., Beranovy ́ch 65, 199 02 Praha 9— 

Letnˇ any, Czech Republic; phone: +420–222– 

538–111; fax: +420–222–538–222. 

(5) You may view this service information 

at the FAA, Engine and Propeller Standards 

Branch, 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 

September 13, 2017. 

Robert J. Ganley, 

Manager, Engine and Propeller Standards 

Branch, Aircraft Certification Service. 

[FR Doc. 2017–19969 Filed 9–21–17; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2017–0750; Product 

Identifier 2017–NE–24–AD] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Corporation Turbofan 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 

Rolls-Royce Corporation (RRC) AE 

3007A and AE 3007C model turbofan 

engines. This proposed AD was 

prompted by an updated analysis that 

lowered the life limit of fan wheels 

installed on the affected engines. This 

proposed AD would require removal of 

the affected fan wheel at new, lower life 

limits. We are proposing this AD to 

address the unsafe condition on these 

products. 

DATES: We must receive comments on 

this proposed AD by November 6, 2017. 

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 

44358 Federal Register / Vol. 82, No. 183 / Friday, September 22, 2017 / Proposed Rules 

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 NPRM, contact Rolls-Royce 

Corporation, 450 South Meridian Street, 

Mail Code NB–02–05, Indianapolis, IN 

46225; phone: 317–230–3774; email: 

indy.pubs.services@rolls-royce.com; 

Internet: www.rolls-royce.com. You may 

view this service information at the 

FAA, Engine and Propeller Standards 

Branch, 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–2017– 

0750; 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 NPRM, 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: Kyri 

Zaroyiannis, Aerospace Engineer, 

Chicago ACO Branch, FAA, 2300 E. 

Devon Ave., Des Plaines, IL 60018; 

phone: 847–294–7836; fax: 847–294– 

7834; email: kyri.zaroyiannis@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposal. Send your comments to 

an address listed under the ADDRESSES

section. Include ‘‘Docket No. FAA– 

2017–0750; Product Identifier 2017– 

NE–24–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 

We learned from RRC that an updated 

stress analysis shows higher stress than 

previously calculated in the aft retainer 

flange scallop of the fan wheel, part 

number (P/N) 23061670. As a result, 

RRC reduced the published life of the 

affected fan wheel. We are proposing 

new life limits to remove this fan wheel 

from service before exceeding this new 

life limit. This condition, if not 

corrected, could result in failure of the 

fan wheel, uncontained release of the 

fan wheel, damage to the engine, and 

damage to the airplane. 

Related Service Information Under 1 

CFR Part 51 

We reviewed RRC Alert Service 

Bulletin (ASB) AE 3007A–A–72–424/ 

ASB AE 3007C–A–72–327 (one 

document), Revision 1, dated April 20, 

2017. The ASB provides updated life 

limits for the affected fan wheels. 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 AD 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 proposed AD would require 

replacement of the affected fan wheels 

at new, lower life limits. 

Costs of Compliance 

We estimate that this proposed AD 

affects 341 engines installed on 

airplanes of U.S. registry. 

We estimate the following costs to 

comply with this proposed AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Replace fan wheel (P/N 23061670) 

at reduced life.

0 work-hours × $85 per hour = $0 $12,357 (pro-rated cost of part) ..... $12,357 $4,213,737 

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. 

This AD is issued in accordance with 

authority delegated by the Executive 

Director, Aircraft Certification Service, 

as authorized by FAA Order 8000.51C. 

In accordance with that order, issuance 

of ADs is normally a function of the 

Compliance and Airworthiness 

Division, but during this transition 

period, the Executive Director has 

delegated the authority to issue ADs 

applicable to engines, propellers, and 

appliances to the Manager, Engine and 

Propeller Standards Branch, Policy and 

Innovation Division. 

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), 

Federal Register / Vol. 82, No. 183 / Friday, September 22, 2017 / Proposed Rules 44359 

(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): 

Roll-Royce Corporation (Type Certificate 

previously held by Allison Engine 

Company): Docket No. FAA–2017–0750; 

Product Identifier 2017–NE–24–AD. 

(a) Comments Due Date 

We must receive comments by November 

6, 2017. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Rolls-Royce 

Corporation (RRC) AE 3007A, AE 3007A1, 

AE 3007A1/1, AE 3007A1/2, AE 3007A1/3, 

AE 3007A1P, AE 3007A1E, AE 3007A3, AE 

3007C and 3007C1 turbofan engines with a 

fan wheel, part number (P/N) 23061670, 

installed. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7250, Turbine/turboprop Engine, 

Turbine Section. 

(e) Unsafe Condition 

This AD was prompted by an updated 

analysis that lowered the life limit of fan 

wheels installed on the affected engines. We 

are issuing this AD to prevent failure of the 

fan wheel. The unsafe condition, if not 

corrected, could result in failure of the fan 

wheel, uncontained release of the fan wheel, 

damage to the engine, and damage to the 

airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(1) For all AE 3007A, AE 3007A1, AE 

3007A1/1, AE 3007A1/2, AE 3007A1/3, AE 

3007A1P, AE 3007A1E, AE 3007A3, AE 

3007C and 3007C1 engines with an installed 

fan wheel, P/N 23061670, after the effective 

date of this AD, remove the affected fan 

wheel before exceeding the new life limits 

identified in Planning Information, paragraph 

1.F., of RRC ASB AE 3007A–A–72–424/ASB 

AE 3007C–A–72–327 (one document), 

Revision 1, dated April 20, 2017. 

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

not return to service any engine with a fan 

wheel, P/N 23061670, with a fan wheel life 

that exceeds the new life limits identified in 

Planning Information, paragraph 1.C., of RRC 

ASB AE 3007A–A–72–424/ASB AE 3007C– 

A–72–327 (one document), Revision 1, dated 

April 20, 2017. 

(g) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Chicago ACO Branch, 

FAA, has the authority to approve AMOCs 

for this AD, if requested using the procedures 

found in 14 CFR 39.19. In accordance with 

14 CFR 39.19, send your request to your 

principal inspector or local Flight Standards 

District Office, as appropriate. If sending 

information directly to the manager of the 

Chicago ACO Branch, send it to the attention 

of the person identified in paragraph (i)(1) of 

this AD. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(h) Related Information 

(1) For more information about this AD, 

contact Kyri Zaroyiannis, Aerospace 

Engineer, Chicago ACO Branch, FAA, 2300 E. 

Devon Ave., Des Plaines, IL 60018; phone: 

847–294–7836; fax: 847–294–7834; email: 

kyri.zaroyiannis@faa.gov. 

(2) For RRC service information identified 

in this AD, contact Rolls-Royce Corporation, 

450 South Meridian Street, Mail Code NB– 

02–05, Indianapolis, IN 46225; phone: 317– 

230–3774; email: indy.pubs.services@rollsroyce.com; Internet: www.rolls-royce.com. 

(3) You may view this service information 

at FAA, Engine and Propeller Standards 

Branch, 1200 District Avenue, Burlington, 

MA 01803. For information on the 

availability of this material at the FAA, call 

781–238–7125. 

Issued in Burlington, Massachusetts, on 

September 13, 2017. 

Robert J. Ganley, 

Manager, Engine and Propeller Standards 

Branch, Aircraft Certification Service. 

[FR Doc. 2017–19962 Filed 9–21–17; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2017–0910; Product 

Identifier 2017–CE–027–AD] 

RIN 2120–AA64 

Airworthiness Directives; Gulfstream 

Aerospace Corporation Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

Gulfstream Aerospace Corporation 

Models GIII (G–1159A), G–IV, and GIV– 

X airplanes. This proposed AD was 

prompted by a report that certain flap 

tracks were manufactured with the 

upper flange thickness less than design 

minimum. This proposed AD would 

require replacing any defective flap 

track. We are proposing this AD to 

address the unsafe condition on these 

products. 

DATES: We must receive comments on 

this proposed AD by November 6, 2017. 

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 NPRM, contact Gulfstream 

Aerospace Corporation, P.O. Box 2206, 

Savannah, Georgia 31404–2206; 

telephone: (912) 965–3000; fax: (912) 

965–3520; email: pubs@gulfstream.com; 

Internet: www.gulfstream.com. You may 

review this referenced service 

information at the FAA, Policy and 

Innovation Division, 901 Locust, Kansas 

City, Missouri 64106. For information 

on the availability of this material at the 

FAA, call (816) 329–4148. 

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–2017–