Federal Register / Vol. 83, No. 134 / Thursday, July 12, 2018 / Rules and Regulations 32203 

(ii) Reserved. 

(3) For Bell Helicopter Textron Canada 

Limited 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/. 

(4) You may view this service information 

at FAA, Office of the Regional Counsel, 

Southwest Region, 10101 Hillwood Pkwy., 

Room 6N–321, Fort Worth, TX 76177. For 

information on the availability of this 

material at the FAA, call (817) 222–5110. 

(5) You may view this service information 

that is incorporated by reference at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, call 

(202) 741–6030, or go to: http://

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued in Fort Worth, Texas, on June 1, 

2018. 

James A. Grigg, 

Acting Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2018–14701 Filed 7–11–18; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2017–1118; Product 

Identifier 2017–NE–40–AD; Amendment 39– 

19313; AD 2018–13–01] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Corporation Turboshaft Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Rolls-Royce Corporation (RRC) model 

250–C turboshaft engines. This AD was 

prompted by several reports of engine 

power loss, one of which resulted in a 

fatal helicopter accident. This AD 

requires removal of the power turbine 

governor (PTG) bearing assembly, part 

number (P/N) 2544198, and its 

replacement with a bearing assembly 

eligible for installation. We are issuing 

this AD to address the unsafe condition 

on these products. 

DATES: This AD is effective August 16, 

2018. 

ADDRESSES: For service information 

identified in this final rule, 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.rollsroyce.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 781–238–7759. 

It is also available on the internet at 

http://www.regulations.gov by searching 

for and locating Docket No. FAA–2018– 

1118. 

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– 

1118; or in person at Docket Operations 

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

through Friday, except Federal holidays. 

The AD docket contains this final rule, 

the regulatory evaluation, any 

comments received, and other 

information. The address for Docket 

Operations (phone: 800–647–5527) is 

Docket Operations, U.S. Department of 

Transportation, Docket Operations, 

M–30, West Building Ground Floor, 

Room W12–140, 1200 New Jersey 

Avenue SE, Washington, DC 20590. 

FOR FURTHER INFORMATION CONTACT: John 

Tallarovic, Aerospace Engineer, Chicago 

ACO Branch, FAA, 2300 E. Devon Ave., 

Des Plaines, IL 60018; phone: 847–294– 

8180; fax: 847–294–7834; email: 

john.m.tallarovic@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to certain Rolls-Royce 

Corporation (RRC) model 250–C 

turboshaft engines. The NPRM 

published in the Federal Register on 

February 1, 2018 (83 FR 4609). The 

NPRM was prompted by several reports 

of loss of engine power on certain RRC 

model 250–C turboshaft engines 

installed on single-engine helicopters. 

One of these instances of power loss 

resulted in a fatal helicopter accident on 

May 4, 2016. The NPRM proposed to 

require removal of the affected PTG 

bearing assembly and replace it with a 

bearing assembly with a new design. We 

are issuing this AD to address the unsafe 

condition on these products. 

Comments 

We gave the public the opportunity to 

participate in developing this final rule. 

The following presents the comments 

received on the NPRM and the FAA’s 

response to each comment. 

Request To Specify the New Bearing 

Assembly 

The NTSB and Honeywell Aerospace 

requested that the AD prohibit the 

installation of bearing assembly, P/N 

2544198, and specify the installation of 

the new bearing assembly, P/N 2526146. 

The NTSB expressed concern that 

differences between the proposed AD 

and the actions described in the 

Honeywell SB and Rolls-Royce CEBs 

could lead to the reinstallation of a 

dual-spool bearing into an affected PTG. 

We partially agree. We agree with the 

request to prohibit the installation of 

another bearing assembly, P/N 2544198, 

because our intent is to remove them 

from service. We disagree with the 

request to specify the installation of the 

new bearing assembly, P/N 2526146, 

because of the possibility of a new 

bearing P/N being introduced or the 

specified P/N being discontinued in the 

future. We added an installation 

prohibition paragraph to this AD to 

prohibit the installation of bearing 

assembly, P/N 2544198. 

Request To Re-Identify the PTG After 

Changing the Bearing Assembly 

The NTSB and Honeywell Aerospace 

requested that the AD require reidentifying the PTG P/N after changing 

the bearing assembly in accordance with 

the related service information. 

Honeywell Aerospace reasoned that 

maintenance personnel and operators 

could easily determine if the service 

bulletin has been accomplished. This 

increases the efficiency of operations 

and reduces the potential for 

misunderstandings about whether the 

bearing assembly has been replaced. 

We disagree. While re-identifying the 

PTG after changing the bearing assembly 

is helpful for maintenance personnel, 

we are not requiring this action within 

this AD. During the replacement of the 

bearing assembly, P/N 2544198, the 

related service information instructs 

personnel to re-identify the PTG. We 

did not change this AD. 

Request To Reduce the Compliance 

Time 

Honeywell Aerospace requested that 

we reduce the compliance time to 50 

hours or within 90 days for PTGs that 

have greater than 750 hours. The 

commenter reasoned that the original 

compliance schedule was established 10 

years ago based on field experience at 

that time. The fatal accident referenced 

in the NPRM occurred on a PTG with 

1,048.7 hours since new. 

We disagree. The compliance time for 

removing the bearing assembly, P/N 

2544198, in this AD is based on RollsVerDate Sep<11>2014 16:03 Jul 11, 2018 Jkt 244001 PO 00000 Frm 00013 Fmt 4700 Sfmt 4700 E:\FR\FM\12JYR1.SGM 12JYR1

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32204 Federal Register / Vol. 83, No. 134 / Thursday, July 12, 2018 / Rules and Regulations 

Royce Corporation Commercial Engine 

Bulletin (CEB) 1402, Revision 2, dated 

February 4, 2009. The failure history 

shows that the number of bearing 

assembly failures fell sharply following 

the initial publication of RRC CEB 1402 

in 2008. The replacement strategy has 

proven successful. As a result, we 

believe that the majority of the fleet has 

replaced the bearing assembly, P/N 

2544198, and only a few remain in 

service. Besides the fatal accident, there 

have not been any other bearing failures 

noted between 2012 and 2018. We, 

therefore, find it unnecessary to reduce 

the compliance time as noted by the 

commenter. We did not change this AD. 

Request To Increase the Number of 

Affected Engines 

Honeywell Aerospace noted that only 

1,200 engines installed on airplanes of 

U.S. registry may be affected, compared 

with the 2,928 mentioned in the NPRM, 

based on a review of modification 

records provided to Honeywell by repair 

stations. 

We disagree. We are estimating the 

total number of engines affected by this 

AD based on the data available to us. 

We did not change this AD. 

Request To Clarify the Affected Engines 

An individual commenter requested 

that we clarify that only those engine 

models that have bearing assembly, P/N 

2544198, installed are affected. 

We agree. We have updated paragraph 

(c) of this AD to clarify that engines 

with bearing assembly, P/N 2544198, 

installed are affected. 

Request To Identify the Model, Brand, 

and P/N of the PTG 

Aircraft Maintenance Netherlands 

requested that this AD identify the 

model, brand, and P/N of the affected 

PTG that must be replaced. The 

commenter reasoned that various PTG 

models can be installed on the affected 

engines. 

We disagree. This AD provides the 

overall engine model applicability. The 

related service information provides 

specific information regarding the PTGs, 

including the manufacturer, model, and 

P/Ns. We did not change this AD. 

Question on Not Issuing the AD Earlier 

An individual commenter asked why 

an AD was not issued in 2009 when 

RRC issued a statement regarding the 

failure of the bearing assembly. 

The FAA uses a risk-based approach 

to make continued operational safety 

decisions. When RRC issued CEB 1402, 

Revision 2, in 2009, our evaluation of 

the fleet risk did not support an AD. We 

update our fleet risk evaluation 

periodically as new information 

becomes available and have now 

determined that an AD is justified. We 

did not change this AD. 

Question if Replacement Part 

Verification Testing Was Completed 

An individual commenter asked if 

tests or procedures were completed to 

verify that the replacement bearing 

assembly resolves the failure of bearing 

assembly, P/N 2544198, due to the lack 

of lubrication. 

We note that replacement parts, such 

as this replacement bearing assembly, 

undergo design analysis and testing 

before being approved for use by the 

FAA. No change is requested. We did 

not change this AD. 

Request for Clarification on the Number 

of Affected Engines 

An individual commenter noted that 

the NPRM estimates that 2,928 model 

250–C turboshaft engines are affected, 

however, the RRC website estimates that 

there are an estimated 16,000 model 

250–C engines currently in service. 

This AD applies to all RRC model 

250–C turboshaft engines that could 

have the bearing assembly, P/N 

2544198, installed. Many of those 

engines have already had the bearing 

assembly, P/N 2544198, replaced when 

new parts became available. Based on 

the available data, we estimate that 

2,928 engines may still have the bearing 

assembly, P/N 2544198, installed. We 

did not change this AD. 

Question on the Availability of a 

Replacement Bearing Assembly 

An individual commenter asked if 

RRC still needs to design a new bearing 

assembly or if a replacement bearing 

assembly is already available. 

A replacement bearing assembly, P/N 

2526146, is available for installation. 

We did not change this AD. 

Support for the AD 

An individual commenter expressed 

support for the NPRM as written. 

Conclusion 

We reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 

public interest require adopting this 

final rule with the changes described 

previously. We have determined that 

these minor changes: 

• Are consistent with the intent that 

was proposed in the NPRM for 

addressing the unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM. 

We also determined that these 

changes will not increase the economic 

burden on any operator or increase the 

scope of this final rule. 

Related Service Information 

We reviewed Rolls-Royce Corporation 

Commercial Engine Bulletin (CEB) 1402, 

Revision 2, dated February 4, 2009. The 

CEB provides guidance on replacing the 

PTG bearing assembly, P/N 2544198, 

with a bearing assembly eligible for 

installation. 

Costs of Compliance 

We estimate that this AD affects 2,928 

engines installed on airplanes of U.S. 

registry. 

We estimate the following costs to 

comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Remove and replace PTG bearing assembly 8 work-hours × $85 per hour = $680 ............. $1,700 $2,380 $6,968,640 

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 


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Federal Register / Vol. 83, No. 134 / Thursday, July 12, 2018 / Rules and Regulations 32205 

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 

associated appliances to the Manager, 

Engine and Propeller Standards Branch, 

Policy and Innovation Division. 

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, 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. 

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): 

2018–13–01 Roll-Royce Corporation (Type 

Certificate previously held by Allison 

Engine Company): Amendment 39– 

19313; Docket No. FAA–2017–1118; 

Product Identifier 2017–NE–40–AD. 

(a) Effective Date 

This AD is effective August 16, 2018. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Rolls-Royce 

Corporation (RRC) model 250–C10D, 250– 

C18, 250–C18A, 250–C18B, 250–C18C, 250– 

C19, 250–C20, 250–C20B, 250–C20C, 250– 

C20F, 250–C20J, 250–C20R, 250–C20R/1, 

250–C20R/2, 250–C20R/4, 250–C20S, 250– 

C20W, 250–C28, 250–C28B, 250–C28C, 250– 

C30, 250–C30G, 250–C30G/2, 250–C30M, 

250–C30P, 250–C30S, and 250–C30U 

turboshaft engines with power turbine 

governor (PTG) bearing assembly, part 

number (P/N) 2544198, installed. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7323, Turbine Governor. 

(e) Unsafe Condition 

This AD was prompted by several reports 

of loss of power, one of which resulted in a 

fatal helicopter accident. We are issuing this 

AD to prevent failure of the PTG bearing 

assembly. The unsafe condition, if not 

addressed, could result in failure of the PTG, 

failure of the engine, in-flight shutdown, and 

forced autorotation landing or accident. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

(1) Remove the bearing assembly, P/N 

2544198, from the PTG in accordance with 

the compliance times in Figure 1 to 

paragraph (g) of this AD, or within 90 days 

after the effective date of this AD, whichever 

occurs later. 

(2) After such removal, replace the affected 

PTG bearing assembly with a part eligible for 

installation before further flight. 

(h) Installation Prohibition 

After the effective date of this AD, do not 

install PTG bearing assembly, P/N 2544198, 

on any engine. 

(i) 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 (j) 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. 

(j) Related Information 

For more information about this AD, 

contact John Tallarovic, Aerospace Engineer, 


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32206 Federal Register / Vol. 83, No. 134 / Thursday, July 12, 2018 / Rules and Regulations 

Chicago ACO Branch, FAA, 2300 E Devon 

Ave., Des Plaines, IL 60018; phone: 847–294– 

8180; fax: 847–294–7834; email: 

john.m.tallarovic@faa.gov. 

(k) Material Incorporated by Reference 

None. 

Issued in Burlington, Massachusetts, on 

July 6, 2018. 

Karen M. Grant, 

Acting Manager, Engine and Propeller 

Standards Branch, Aircraft Certification 

Service. 

[FR Doc. 2018–14801 Filed 7–11–18; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF HOMELAND 

SECURITY 

Coast Guard 

33 CFR Part 100 

[Docket No. USCG–2018–0662] 

RIN 1625–AA08 

Special Local Regulation; Marine City 

Water Ski Show, St. Clair River, Marine 

City, MI 

AGENCY: Coast Guard, DHS. 

ACTION: Temporary final rule. 

SUMMARY: The Coast Guard is 

establishing a special local regulation 

for certain navigable waters of the St. 

Clair River, Marine City, MI. This action 

is necessary and is intended to ensure 

safety of life on navigable waters 

immediately prior to, during, and 

immediately after the Marine City Water 

Ski Show. 

DATES: This temporary final rule is 

effective from 1 p.m. though 5 p.m. on 

August 4, 2018. 

ADDRESSES: To view documents 

mentioned in this preamble as being 

available in the docket, go to http://

www.regulations.gov, type USCG–2018– 

0662 in the ‘‘SEARCH’’ box and click 

‘‘SEARCH.’’ Click on Open Docket 

Folder on the line associated with this 

rule. 

FOR FURTHER INFORMATION CONTACT: If 

you have questions on this temporary 

rule, call or email Tracy Girard, 

Prevention Department, Sector Detroit, 

Coast Guard; telephone (313) 568–9564, 

or email Tracy.M.Girard@uscg.mil. 

SUPPLEMENTARY INFORMATION: 

I. Table of Abbreviations 

CFR Code of Federal Regulations 

DHS Department of Homeland Security 

FR Federal Register 

NPRM Notice of Proposed Rulemaking 

§ Section 

COTP Captain of the Port 

U.S.C. United States Code 

II. Background Information and 

Regulatory History 

The Coast Guard is issuing this 

temporary rule without prior notice and 

opportunity to comment pursuant to 

authority under section 4(a) of the 

Administrative Procedure Act (APA) (5 

U.S.C. 553(b)). This provision 

authorizes an agency to issue a rule 

without prior notice and opportunity to 

comment when the agency for good 

cause finds that those procedures are 

‘‘impracticable, unnecessary, or contrary 

to the public interest.’’ Under 5 U.S.C. 

553(b)(B), the Coast Guard finds that 

good cause exists for not publishing a 

notice of proposed rulemaking (NPRM) 

with respect to this rule because doing 

so would be impracticable. The Coast 

Guard just recently received the final 

details of this water ski show, which 

does not provide sufficient time to 

publish an NPRM prior to the event. 

Thus, delaying the effective date of this 

rule to wait for a comment period to run 

would be contrary to public interest 

because it would inhibit the Coast 

Guard’s ability to protect participants, 

mariners and vessels from the hazards 

associated with this event. It is 

impracticable to publish an NPRM 

because we lack sufficient time to 

provide a reasonable comment period 

and then consider those comments 

before issuing this rule. 

Under 5 U.S.C. 553(d)(3), the Coast 

Guard finds that good cause exists for 

making this rule effective less than 30 

days after publication in the Federal 

Register. Delaying the effective date of 

this rule would inhibit the Coast 

Guard’s ability to protect participants, 

mariners and vessels from the hazards 

associated with this event. 

III. Legal Authority and Need for Rule 

The Coast Guard is issuing this rule 

under authority in 33 U.S.C. 1233. The 

Captain of the Port Detroit (COTP) has 

determined that the likely combination 

of recreation vessels, commercial 

vessels, and an unknown number of 

spectators in close proximity to a water 

ski show along the water pose extra and 

unusual hazards to public safety and 

property. Therefore, the COTP is 

establishing a special local regulation 

around the event location to help 

minimize risks to safety of life and 

property during this event. 

IV. Discussion of the Rule 

This rule establishes a special local 

regulation from 1 p.m. though 5 p.m. on 

August 4, 2018. The special local 

regulation will encompass all U.S. 

navigable waters of the St. Clair River, 

Marine City, MI, bound by: 200 feet 

seaward of latitude position 42°43.382′ 

N and 200 feet seaward of latitude 

position 42°42.983′ N (NAD 83). The 

special local regulation will be enforced 

from 1 p.m. to 1:45 p.m. and from 4 p.m. 

to 4:45 p.m. on August 4, 2018. No 

vessel or person will be permitted to 

enter the special local regulation 

without obtaining permission from the 

COTP or his designated representative. 

V. Regulatory Analyses 

We developed this rule after 

considering numerous statutes and 

Executive orders related to rulemaking. 

Below we summarize our analyses 

based on a number of these statutes and 

Executive orders, and we discuss First 

Amendment rights of protestors. 

A. Regulatory Planning and Review 

Executive Orders 12866 and 13563 

direct agencies to assess the costs and 

benefits of available regulatory 

alternatives and, if regulation is 

necessary, to select regulatory 

approaches that maximize net benefits. 

Executive Order 13771 directs agencies 

to control regulatory costs through a 

budgeting process. This rule has not 

been designated a ‘‘significant 

regulatory action,’’ under Executive 

Order 12866. Accordingly, this rule has 

not been reviewed by the Office of 

Management and Budget (OMB), and 

pursuant to OMB guidance it is exempt 

from the requirements of Executive 

Order 13771. 

This regulatory action determination 

is based on the size, location, duration, 

and time-of-year of the special local 

regulation. Vessel traffic will be able to 

safely transit around this special local 

regulation zone which will impact a 

small designated area of the St. Clair 

River from 1 p.m. until 5 p.m. on 

August 4, 2018. Moreover, the Coast 

Guard will issue Broadcast Notice to 

Mariners via VHF–FM marine channel 

16 about the special local regulation and 

the rule allows vessels to seek 

permission to enter the area. 

B. Impact on Small Entities 

The Regulatory Flexibility Act of 

1980, 5 U.S.C. 601–612, as amended, 

requires Federal agencies to consider 

the potential impact of regulations on 

small entities during rulemaking. The 

term ‘‘small entities’’ comprises small 

businesses, not-for-profit organizations 

that are independently owned and 

operated and are not dominant in their 

fields, and governmental jurisdictions 

with populations of less than 50,000. 

The Coast Guard certifies under 5 U.S.C. 

605(b) that this rule will not have a 


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