Federal Register / Vol. 86, No. 160 / Monday, August 23, 2021 / Proposed Rules 47043 

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: 

Sikorsky Aircraft Corporation: Docket No. 

FAA–2021–0689; Project Identifier AD– 

2020–01589–R. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by October 7, 

2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Sikorsky Aircraft 

Corporation Model S–92A helicopters, 

certificated in any category, with a main rotor 

stationary swashplate assembly (swashplate 

assembly) part number (P/N) 92104–15011– 

042 or P/N 92104–15011–043 that has 

accumulated 1,600 or more total hours timein-service, installed. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code/Air Transport Association (ATA) of 

America Code 6230, Main Rotor Mast/ 

Swashplate. 

(e) Unsafe Condition 

This AD was prompted by the discovery of 

a crack on the swashplate assembly inner 

ring. This condition, if not detected and 

corrected, could result in fretting wear on the 

shoulder that supports the clamp-up of the 

uniball outer race, failure of the swashplate 

assembly, and subsequent loss of control of 

the helicopter. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

(1) Within 50 hours time-in-service (TIS) 

after the effective date of this AD, and 

thereafter at intervals not to exceed 50 hours 

TIS, visually inspect the swashplate 

assembly for a crack, nick, dent, and scratch, 

by following the Accomplishment 

Instructions, Section 3, paragraph B. (except 

paragraphs B.(2)(a) through (c)) of Sikorsky 

Aircraft Corporation Alert Service Bulletin 

ASB 92–62–009, Basic Issue, dated February 

6, 2019. 

(2) If there is a crack, nick, dent, or scratch 

that exceeds the allowable limits, before 

further flight, remove the swashplate 

assembly from service. 

(h) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Boston ACO, Compliance 

& Airworthiness Division, 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 Related Information. 

(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. 

(i) Related Information 

(1) For more information about this AD, 

contact Jared Hyman, Aerospace Engineer, 

Boston ACO Branch, Compliance & 

Airworthiness Division, FAA, 1200 District 

Avenue, Burlington, Massachusetts 01803; 

telephone 781–238–7799; email: 

Jared.M.Hyman@faa.gov. 

(2) For service information identified in 

this AD, contact your local Sikorsky Field 

Representative or Sikorsky’s Service 

Engineering Group at Sikorsky Aircraft 

Corporation, 124 Quarry Road, Trumbull, CT 

06611; telephone 1–800–946–4337 (1–800– 

Winged–S); email wcs_cust_service_eng.grsik@lmco.com. Operators may also log on to 

the Sikorsky 360 website at https://

www.sikorsky360.com. You may view this 

referenced service information at the FAA, 

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. 

Issued on August 16, 2021. 

Ross Landes, 

Deputy Director for Regulatory Operations, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–17948 Filed 8–20–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

Proposed Amendment of Class C 

Airspace at Chicago Midway 

International Airport, IL; Public 

Meeting 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notification of meeting. 

SUMMARY: This document announces a 

fact-finding informal airspace meeting 

regarding a plan to amend the Class C 

Airspace at Chicago Midway 

International Airport, IL. The purpose of 

the meeting is to solicit aeronautical 

comments on the proposal’s effects on 

local aviation operations. All comments 

received during the meeting, and the 

subsequent comment period, will be 

considered prior to the issuance of a 

notice of proposed rulemaking. 

DATES: The meetings will be held on 

Tuesday, September 28, 2021, beginning 

at 1:00 p.m. (Central Time) and on 

Wednesday, September 29, 2021, 

beginning at 6:00 p.m. (Central Time). 

Comments must be received on or 

before Friday, October 29, 2021. Each 

registered participant that indicated 

they would like to make comments 

during the meeting will be given an 

opportunity to deliver their comments 

or make a presentation, although a time 

limit may be imposed to accommodate 

closing times. 

ADDRESSES:

Format: This will be a virtual 

informal airspace meeting using the 

Zoom teleconferencing tool. The 

meeting will also be available to watch 

on the FAA’s Facebook, Twitter, and 

YouTube social media channels. 

Comments: Send comments on the 

proposal, not later than October 29, 

2021, to: Christopher Southerland, 

Manager, Operations Support Group, 

Central Service Area, Air Traffic 

Organization, Federal Aviation 

Administration, 10101 Hillwood 

Parkway, Fort Worth, TX 76177; or via 

email to: 9-ASW-CSC-OSG-AirspaceComments@faa.gov, please include 

MDW Class C in the email subject line. 

FOR FURTHER INFORMATION CONTACT: Al 

Qualiardi, Support Manager, Chicago 

District, Chicago Terminal Radar 

Approach Control (TRACON), Air 

Traffic Organization, 1100 Bowes Road, 

Elgin, IL, 60123. Telephone: (847) 608– 

5591. 

SUPPLEMENTARY INFORMATION: 

Meeting Procedures: 

The meeting will provide interested 

parties an opportunity to present views, 

recommendations, and comments on the 

proposed airspace amendment. 

(a) Registration: To attend the 

meeting, members of the public are 

asked to register at https://zoom.us/ 

webinar/register/WN_1MpVHlbdRH

S4SeyIMgxcqw for the Tuesday, 

September 28, 2021, meeting and at 

https://zoom.us/webinar/register/WN_

zY2MTFJnQDynDG1-tZS16g for the 

Wednesday, September 29, 2021, 

meeting. When registration is 

confirmed, registrants will be provided 


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47044 Federal Register / Vol. 86, No. 160 / Monday, August 23, 2021 / Proposed Rules 

the virtual meeting weblink 

information/teleconference call-in 

number and passcode. Callers are 

responsible for paying associated longdistance charges (if any). 

(b) The meeting will be open to all 

persons on a space-available basis. 

There will be no admission fee or other 

charge to attend and participate. The 

meeting will be informal in nature and 

will be conducted by one or more 

representatives of the FAA Eastern 

Service Area. A representative from the 

FAA will present a briefing on the 

planned airspace modifications. 

(c) Each participant will be given an 

opportunity to deliver comments or 

make a presentation, although a time 

limit may be imposed to accommodate 

closing times. Only comments 

concerning the plan to amend the 

Chicago Midway Class C airspace area 

will be accepted. 

(d) Each person wishing to make a 

presentation will be asked to note their 

intent when registering for the meeting 

so those time frames can be established. 

This meeting will not be adjourned until 

everyone registered to speak has had an 

opportunity to address the panel. This 

meeting may be adjourned at any time 

if all persons present have had an 

opportunity to speak. 

(e) Position papers or other handout 

material relating to the substance of the 

meeting will be accepted. Participants 

submitting papers or handout materials 

should send them to the mail or email 

address noted in the COMMENTS 

section, above. 

(f) This meeting will not be formally 

recorded. However, a summary of the 

comments made at the meeting will be 

filed in the rulemaking docket. 

Information gathered through this 

meeting will assist the FAA in drafting 

a notice of proposed rulemaking 

(NPRM) that would be published in the 

Federal Register. The public will be 

afforded the opportunity to comment on 

any NPRM published on this matter. 

A graphic depiction of the proposed 

airspace modifications may be viewed at 

the following URL: https://www.faa.gov/ 

air_traffic/community_involvement/ 

mdw/. 

Agenda for the Meeting 

—Presentation of Meeting Procedures 

—Informal Presentation of the planned 

Class C Airspace area 

—Public Presentations and Discussions 

—Closing Comments 

Authority: 49 U.S.C. 106(f), 106(g); 40103, 

40113, 40120; E.O.10854, 24 FR 9565, 3 CFR, 

1959–1963 Comp., p. 389. 

Issued in Washington DC, on August 16, 

2021. 

George Gonzalez, 

Acting Manager, Rules and Regulations 

Group. 

[FR Doc. 2021–17929 Filed 8–20–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF HOMELAND 

SECURITY 

Coast Guard 

33 CFR Part 165 

[Docket Number USCG–2021–0647] 

RIN 1625–AA00 

Safety Zone; CBWTP Outfall Diffuser 

Improvements, Columbia River, 

Portland, OR 

AGENCY: Coast Guard, DHS. 

ACTION: Notice of proposed rulemaking. 

SUMMARY: The Coast Guard is proposing 

to establish a temporary safety zone for 

certain navigable waters of the 

Columbia River. This action is necessary 

to provide for the safety of life on these 

navigable waters near Portland, OR, at 

Columbia River Mile 105.6 from October 

1, 2021, through February 28, 2022. This 

proposed rulemaking would prohibit 

persons and vessels from being in the 

safety zone unless authorized by the 

Captain of the Port Sector Columbia 

River or a designated representative. We 

invite your comments on this proposed 

rulemaking. 

DATES: Comments and related material 

must be received by the Coast Guard on 

or before September 7, 2021. 

ADDRESSES: You may submit comments 

identified by docket number USCG– 

2021–0647 using the Federal 

eRulemaking Portal at https://

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 LCDR Sean 

Morrison, Waterways Management 

Division, Marine Safety Unit Portland, 

U.S. Coast Guard; telephone 503–240– 

9319, email D13-SMBMSUPortlandWWM@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 

U.S.C. United States Code 

II. Background, Purpose, and Legal 

Basis 

On July 20, 2021, Ballard Marine 

Construction notified the Coast Guard 

that it would begin construction for 

their CBWTP Outfall Diffuser 

Improvements Project from 12:01 a.m. 

on October 1, 2021, through 11:59 p.m. 

on February 28, 2022, to remove and 

replace existing pipeline along with 

dredging operations. The construction 

project includes the two Outfall 

easements (001 and 003) being dredged 

with diver assistance to expose existing 

risers and diffusers. The existing risers 

and diffuser valves will be removed and 

disposed of. In their place, longer risers 

will be attached along with new diffuser 

valves. Additionally, the Outfalls will 

be dredged to remove the treated 

effluent that has settled inside the main 

trunk lines if needed. All diver work 

will be supported by a floating crane 

barge approximately 50 feet by 185 feet 

that will be anchored during the 

duration of work upon each of the two 

specified Outfalls and will be moved 

within the zone approximately four 

times. The Captain of the Port Sector 

Columbia River (COTP) has determined 

that potential hazards associated with 

the construction project would be a 

safety concern for anyone within the 

designated area of the CBWTP Outfall 

Diffuser Improvements. 

The purpose of this rulemaking is to 

ensure the safety of vessels and the 

navigable waters within the designated 

area of the CBWTP Outfall Diffuser 

Improvements construction project. The 

Coast Guard is proposing this 

rulemaking under authority in 46 U.S.C. 

70034 (previously 33 U.S.C. 1231). 

III. Discussion of Proposed Rule 

The COTP is proposing to establish a 

safety zone from October 1, 2021, 

through February 28, 2022. The safety 

zone would cover all navigable waters 

of the Columbia River, surface to 

bottom, approximately 300 yards to the 

east and west side of the Burlington 

Northern Railroad Bridge on the Oregon 

side of the Columbia River from the 

shoreline to the outside of the main 

navigational channel; specifically 

beginning at the shoreline at 45°37′26.2′′ 

N, 122°41′46.91′′ W, northeast to 

45°37′33.206′′ N, 122°41′37.699′′ W, 

southeast to 45°37′23.4′′ N, 122°41′18.1′′ 

W, thence southwest to 45°37′16.27′′ N, 

122°41′30.75′′ W, and along the 

shoreline back to the beginning point. 

The duration of the zone is intended to 

ensure the safety of vessels and these 


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