Federal Register / Vol. 83, No. 157 / Tuesday, August 14, 2018 / Proposed Rules 40161 

Accomplishment Instructions of ASB 737– 

53A1368. 

(h) Exceptions to Service Information 

Specifications 

(1) For purposes of determining 

compliance with the requirements of this AD: 

Where ASB 737–53A1368 uses the phrase 

‘‘the original issue date of this service 

bulletin,’’ this AD requires using ‘‘the 

effective date of this AD.’’ 

(2) Where ASB 737–53A1368 specifies 

contacting Boeing: This AD requires repair 

before further flight using a method approved 

in accordance with the procedures specified 

in paragraph (j) of this AD. 

(i) Optional Terminating Action for 

Repetitive Inspections 

(1) Accomplishment of the repair in 

accordance with PART 4 of the 

Accomplishment Instructions of ASB 737– 

53A1368 terminates the repetitive 

inspections specified in PART 2 of ASB 737– 

53A1368 on the side of the airplane on which 

the repair was done, as required by paragraph 

(g) of this AD. 

(2) Accomplishment of the preventive 

modification in accordance with PART 5 of 

the Accomplishment Instructions of ASB 

737–53A1368 terminates the repetitive 

inspections specified in PART 2 or PART 6, 

as applicable, of ASB 737–53A1368 on the 

side of the airplane on which the preventive 

modification was done, as required by 

paragraph (g) of this AD. 

(j) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Seattle 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 

certification office, send it to the attention of 

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

this AD. Information may be emailed to: 9- 

ANM-Seattle-ACO-AMOC-Requests@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. 

(3) An AMOC that provides an acceptable 

level of safety may be used for any repair, 

modification, or alteration required by this 

AD if it is approved by the Boeing 

Commercial Airplanes Organization 

Designation Authorization (ODA) that has 

been authorized by the Manager, Seattle ACO 

Branch, to make those findings. To be 

approved, the repair method, modification 

deviation, or alteration deviation must meet 

the certification basis of the airplane, and the 

approval must specifically refer to this AD. 

(4) Except as required by paragraph (h) of 

this AD: For service information that 

contains steps that are labeled as RC, the 

provisions of paragraphs (j)(4)(i) and (j)(4)(ii) 

of this AD apply. 

(i) The steps labeled as RC, including 

substeps under an RC step and any figures 

identified in an RC step, must be done to 

comply with the AD. If a step or substep is 

labeled ‘‘RC Exempt,’’ then the RC 

requirement is removed from that step or 

substep. An AMOC is required for any 

deviations to RC steps, including substeps 

and identified figures. 

(ii) Steps not labeled as RC may be 

deviated from using accepted methods in 

accordance with the operator’s maintenance 

or inspection program without obtaining 

approval of an AMOC, provided the RC steps, 

including substeps and identified figures, can 

still be done as specified, and the airplane 

can be put back in an airworthy condition. 

(k) Related Information 

(1) For more information about this AD, 

contact Alan Pohl, Aerospace Engineer, 

Airframe Section, FAA, Seattle ACO Branch, 

2200 South 216th St., Des Moines, WA 

98198; phone and fax: 206–231–3527; email: 

alan.pohl@faa.gov. 

(2) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Contractual & Data 

Services (C&DS), 2600 Westminster Blvd., 

MC 110–SK57, Seal Beach, CA 90740–5600; 

telephone 562–797–1717; internet https://

www.myboeingfleet.com. You may view this 

referenced service information at the FAA, 

Transport Standards Branch, 2200 South 

216th St., Des Moines, WA. For information 

on the availability of this material at the 

FAA, call 206–231–3195. 

Issued in Des Moines, Washington, on 

August 5, 2018. 

Michael Kaszycki, 

Acting Director, System Oversight Division, 

Aircraft Certification Service. 

[FR Doc. 2018–17323 Filed 8–13–18; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2018–0538; Product 

Identifier 2012–NE–47–AD] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

plc Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to supersede 

Airworthiness Directive (AD) 2017–03– 

02, which applies to certain Rolls-Royce 

plc (RR) RB211 Trent 768–60, 772–60, 

and 772B–60 turbofan engines. AD 

2017–03–02 requires initial and 

repetitive ultrasonic inspections (UIs) of 

the affected low-pressure (LP) 

compressor blades. Since we issued AD 

2017–03–02, RR issued revised service 

information to reduce the inspection 

threshold for UIs of the affected blades. 

This proposed AD would retain the UIs 

in AD 2017–03–02 while reducing the 

inspection threshold. We are proposing 

this AD to address the unsafe condition 

on these products. 

DATES: We must receive comments on 

this proposed AD by September 28, 

2018. 

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 Rolls-Royce plc, 

P.O. Box 31, Derby, England, DE24 8BJ; 

phone: 011–44–1332–242424; fax: 011– 

44–1332–249936, or email: http://

www.rolls-royce.com/contact/civil_

team.jsp. You may view this service 

information at the 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– 

7759. 

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–2018– 

0538; 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 NPRM, the 

mandatory continuing airworthiness 

information (MCAI), the regulatory 

evaluation, any comments received, and 

other information. The address for 

Docket Operations (phone: 800–647– 

5527) is listed above. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: 

Kevin M. Clark, Aerospace Engineer, 

ECO Branch, FAA, 1200 District 

Avenue, Burlington, MA 01803; phone: 

781–238–7088; fax: 781–238–7199; 

email: kevin.m.clark@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 


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40162 Federal Register / Vol. 83, No. 157 / Tuesday, August 14, 2018 / Proposed Rules 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2018–0538; Product Identifier 

2012–NE–47–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 proposed AD. 

Discussion 

We issued AD 2017–03–02, 

Amendment 39–18793 (82 FR 10701, 

February 15, 2017), (‘‘AD 2017–03–02’’), 

for certain RR RB211 Trent 768–60, 

772–60, and 772B–60 turbofan engines 

with LP compressor blade, part number 

(P/N) FK23411, FK25441, FK25968, 

FW11901, FW15393, FW23643, 

FW23741, FW23744, KH23403, or 

KH23404, installed. AD 2017–03–02 

requires the UIs of the affected LP 

compressor blades. AD 2017–03–02 

resulted from revised service 

information to reduce the inspection 

threshold of the UI for the LP 

compressor blades. We issued AD 2017– 

03–02 to correct the unsafe condition on 

these products. 

Actions Since AD 2017–03–02 Was 

Issued 

Since we issued AD 2017–03–02, 

further analysis determined that the 

initial and repetitive inspection 

threshold described in Revision 3 of 

Rolls-Royce Alert Non-Modification 

Service Bulletin (NMSB) RB.211–72– 

AH465 must be further reduced from 

2,400 cycles to 1,200 cycles. Therefore, 

RR issued Revision 4 of Alert NMSB 

RB.211–72–AH465, dated October 3, 

2017. Also, since we issued AD 2017– 

03–02, the European Aviation Safety 

Agency (EASA) issued AD 2017–0241, 

dated December 6, 2017, which requires 

ultrasonic inspection of each affected LP 

compressor blade within the 

compliance time specified in Section 

1.D. of RR Alert NMSB RB.211–72– 

AH465. 

Related Service Information Under 1 

CFR Part 51 

We reviewed Rolls-Royce Alert NMSB 

RB.211–72–AH465, Revision 4, dated 

October 3, 2017. The Alert NMSB 

describes procedures for performing 

initial and repetitive UI of the LP 

compressor blades. 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. 

Other Related Service Information 

We also reviewed the following 

service information: RR NMSB RB.211– 

72–G702, dated May 23, 2011; RR 

NMSB RB.211–72–G872, Revision 2, 

dated March 8, 2013, or earlier 

revisions; RR NMSB RB.211–72–H311, 

dated March 8, 2013; RR Engine Manual 

E-Trent-1RR, Task 72–31–11–200–806; 

or Airbus A330 Aircraft Maintenance 

Manual (AMM), Tasks 72–31–41–270– 

801 or 72–31–41–270–802. These 

service documents describe the 

inspection procedures for the UI of the 

Trent 700 LP compressor blades. 

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 retain all 

requirements of AD 2017–03–02. This 

proposed AD would reduce the 

inspection threshold for UI of the LP 

compressor blades from 2,400 cycles to 

1,200 cycles. This proposed AD would 

also require accomplishing the actions 

specified in the service information 

described previously. 

Differences Between the Proposed AD 

and the MCAI or Service Information 

The compliance time of this proposed 

AD differs from EASA AD 2017–0241 in 

that, for blades with 2,400 cycles since 

new or cycles since last inspection on 

the effective date of this AD, this AD 

requires inspection within 30 days after 

the effective date of this AD. EASA AD 

2017–0241 specifies that all blades must 

be inspected before accumulating 2,400 

cycles. 

Costs of Compliance 

We estimate that this proposed AD 

affects 56 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 

Inspection ................................ 44 work-hours × $85 per hour = $3,740 ................................ $0 $3,740 $209,440 

This proposed AD provides updated 

labor cost for completing the UI of the 

LP compressor blades as a correction to 

AD 2017–03–02. 

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 

associated appliances to the Manager, 

Engine and Propeller Standards Branch, 

Policy and Innovation Division. 

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 


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Federal Register / Vol. 83, No. 157 / Tuesday, August 14, 2018 / Proposed Rules 40163 

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, 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) 

2017–03–02, Amendment 39–18793 (82 

FR 10701, February 15, 2017), and 

adding the following new AD: 

Rolls-Royce plc: Docket No. FAA–2018– 

0538; Product Identifier 2012–NE–47– 

AD. 

(a) Comments Due Date 

The FAA must receive comments on this 

AD action by September 28, 2018. 

(b) Affected ADs 

This AD replaces AD 2017–03–02, 

Amendment 39–18793 (82 FR 10701, 

February 15, 2017). 

(c) Applicability 

This AD applies to Rolls-Royce plc (RR) 

RB211 Trent 768–60, 772–60, and 772B–60 

turbofan engines with low-pressure (LP) 

compressor blade, part number (P/N) 

FK23411, FK25441, FK25968, FW11901, 

FW15393, FW23643, FW23741, FW23744, 

KH23403, or KH23404, installed. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7230, Turbine Engine Compressor 

Section. 

(e) Unsafe Condition 

This AD was prompted by LP compressor 

blade partial airfoil release events that 

occurred in-service on RR Trent 700 engines. 

While released sections were contained in 

each case, projection of secondary debris and 

effects could present a potential hazard. We 

are issuing this AD to prevent LP compressor 

blade airfoil separation. The unsafe 

condition, if not addressed, could result in 

damage to the engine and damage to the 

airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

(1) After the effective date of this AD, 

perform an ultrasonic inspection (UI) of each 

LP compressor blade within the compliance 

time specified in Figure 1 to paragraph (g) of 

this AD, and thereafter at intervals not to 

exceed 1,200 cycles since last inspection 

(CSLI). 

(2) Use the Accomplishment Instructions, 

paragraph 3, excluding subparagraphs 

3.C.(2)(b), 3.D.(2), and 3.G.(1), of RR Alert 

Non-Modification Service Bulletin (NMSB) 

RB.211–72–AH465, Revision 4, dated 

October 3, 2017, to perform the inspections 

required by this AD. 

(3) If an LP compressor blade fails the 

inspection required by this AD, replace the 

blade with a part eligible for installation, 

prior to return to service. 

(h) Parts Installation 

After the effective date of this AD, LP 

compressor blade, P/N FK23411, FK25441, 

FK25968, FW11901, FW15393, FW23643, 

FW23741, FW23744, KH23403, or KH23404, 

is eligible for installation if the LP 

compressor blade has not exceeded 1,200 

CSN or CSLI. 

(i) Credit for Previous Actions 

You may take credit for the UIs required 

by paragraph (g) of this AD, if you performed 

the UIs before the effective date of this AD 

using the following service information: RR 

NMSB RB.211–72–AH465, Revision 3, dated 

April 27, 2017, or earlier revisions; RR NMSB 

RB.211–72–G702, dated May 23, 2011; RR 

NMSB RB.211–72–G872, Revision 2, dated 

March 8, 2013, or earlier revisions; RR NMSB 

RB.211–72–H311, dated March 8, 2013; RR 

Engine Manual E-Trent-1RR, Task 72–31–11– 

200–806; or Airbus A330 Aircraft 

Maintenance Manual (AMM), Tasks 72–31– 

41–270–801 or 72–31–41–270–802. 


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(j) 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 (k)(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. 

(k) Related Information 

(1) For more information about this AD, 

contact Kevin M. Clark, Aerospace Engineer, 

ECO Branch, FAA, 1200 District Avenue, 

Burlington, MA 01803; phone: 781–238– 

7088; fax: 781–238–7199; email: 

kevin.m.clark@faa.gov. 

(2) For service information identified in 

this AD, contact Rolls-Royce plc, P.O. Box 

31, Derby, England, DE24 8BJ; phone: 011– 

44–1332–242424; fax: 011–44–1332–249936, 

or email: http://www.rolls-royce.com/ 

contact/civil_team.jsp. You may view this 

referenced service information at the FAA, 

Engine and Propeller Standards Branch, 1200 

District Avenue, Burlington, MA 01803. For 

information on the availability of this 

material at the FAA, call 781–238–7759. 

Issued in Burlington, Massachusetts, on 

August 9, 2018. 

Robert J. Ganley, 

Manager, Engine and Propeller Standards 

Branch, Aircraft Certification Service. 

[FR Doc. 2018–17405 Filed 8–13–18; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF HOMELAND 

SECURITY 

Coast Guard 

33 CFR Part 110 

[Docket Number USCG–2017–0181] 

RIN 1625–AA01 

Anchorage Grounds; Baltimore 

Harbor, Baltimore, MD 

AGENCY: Coast Guard, DHS. 

ACTION: Notice of proposed rulemaking. 

SUMMARY: The Coast Guard proposes to 

amend its Baltimore Harbor anchorage 

grounds regulation. The proposed 

changes would reduce the size of three 

general anchorages, establish one new 

general anchorage, rename two existing 

general anchorages, and change the 

duration a vessel may remain within an 

anchorage for two existing general 

anchorages. This proposed rule would 

ensure that Coast Guard regulations are 

consistent with the U.S. Army Corps of 

Engineers Baltimore District Port of 

Baltimore Anchorages and Channels 

civil works project that widened the 

channel, and provide a higher degree of 

safety to persons, property and the 

environment by accurately depicting the 

anchorage locations. The proposed 

changes to the regulated uses of the 

anchorages would support current and 

future port activity related to the safety 

of post-Panamax commercial cargo 

vessels, and would remove vessel 

security provisions that currently exist 

in these Baltimore Harbor regulations. 

We invite your comments on this 

proposed rulemaking. 

DATES: Comments and related material 

must be received by the Coast Guard on 

or before November 13, 2018. 

ADDRESSES: You may submit comments 

identified by docket number USCG– 

2017–0181 using the Federal 

eRulemaking Portal at http://

www.regulations.gov. See the ‘‘Public 

Participation and Request for 

Comments’’ portion of the 

SUPPLEMENTARY INFORMATION section for 

further instructions on submitting 

comments. 

FOR FURTHER INFORMATION CONTACT: If 

you have questions about this proposed 

rulemaking, call or email Mr. Ronald L. 

Houck, U.S. Coast Guard, Sector 

Maryland-National Capital Region, 

Waterways Management Division, Coast 

Guard; telephone (410) 576–2674, email 

Ronald.L.Houck@uscg.mil. 

SUPPLEMENTARY INFORMATION: 

I. Table of Abbreviations 

CFR Code of Federal Regulations 

DHS Department of Homeland Security 

E.O. Executive order 

FR Federal Register 

NPRM Notice of proposed rulemaking 

Pub. L. Public Law 

§ Section 

U.S.C. United States Code 

II. Background, Purpose, and Legal 

Basis 

Anchorage regulation duties and 

powers were transferred to the Coast 

Guard in 1967 (32 FR 17726, Dec. 12, 

1967). On December 12, 1968, the Fifth 

Coast Guard District published a final 

rule in the Federal Register (33 FR 

18438) establishing an anchorage area in 

Baltimore Harbor, Maryland. The 

anchorage grounds at Baltimore, 

Maryland are described in 33 CFR 

110.158. These anchorage grounds are 

involved in a federal navigation project 

under the jurisdiction of the U.S. Army 

Corps of Engineers Baltimore District. 

Section 101a(22) of the Water Resources 

Development Act of 1999 (Pub. L. 106– 

53, 113 Stat 269 (1999)) authorized 

widening of the Dundalk and Seagirt 

Marine Terminal channels. Widening of 

the Seagirt Marine Terminal channel 

occurred in 2015. This dredging 

widened the limits of existing 

navigation channels which are used to 

access key Maryland Port 

Administration marine terminals 

located immediately adjacent to the 

Baltimore Harbor, Maryland anchorage 

grounds, and put the existing anchorage 

grounds in the way of the newly 

expanded navigation channels. To 

addresses these changes, Sector 

Maryland-National Capital Region, 

Baltimore, Maryland, worked in 

coordination with the Port of Baltimore 

Harbor Safety and Coordination 

Committee to develop proposed 

revisions to the affected anchorage 

boundaries and associated regulations. 

The purpose of this rulemaking is to 

reduce navigational safety risk and 

support port efficiency in Baltimore 

Harbor. This proposed rule would 

designate a new general anchorage 

ground developed from an existing 

anchorage ground that is located outside 

of the established navigation channel in 

order to align with the existing U.S. 

Army Corps of Engineers Baltimore 

District Port of Baltimore Anchorages 

and Channels civil works project. The 

Baltimore Harbor anchorage grounds are 

typically used by deep draft commercial 

cargo vessels. In order to maximize the 

availability and use of these important 

anchorages, this proposed rule would 

also change the duration for which 

vessels may remain in these anchorages. 

This proposed rule would reduce the 

duration a vessel may remain within 

Anchorage No. 3 Lower (proposed to be 

changed to Anchorage No. 3A) and 

Anchorage No. 4, from 72 hours to 24 

hours. Lastly, due to similar provisions 

within the Maritime Transportation 

Security Act of 2002 (MTSA) (Pub. L. 

107–295) and federal regulations (33 

CFR part 104, and 46 CFR chapter 1, 

subchapters N and O), the vessel 

security requirements in § 110.158(d) 

are now redundant and would be 

removed as part of this proposed rule. 

The legal basis for this rule is: 33 

U.S.C. 471, 1221 through 1236, 2071; 33 

CFR 1.05–1; and Department of 

Homeland Security Delegation No. 

0170.1, which collectively authorize the 

Coast Guard to define anchorage 

grounds. 

III. Discussion of Proposed Rule 

The Coast Guard proposes to amend 

the Baltimore Harbor, Maryland 

anchorage grounds as described in 33 


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