78702 Federal Register / Vol. 85, No. 235 / Monday, December 7, 2020 / Rules and Regulations 

(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, 

email: fedreg.legal@nara.gov or go to: https:// 

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

Issued on November 23, 2020. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2020–26773 Filed 12–4–20; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–1104; Project 

Identifier MCAI–2020–01421–P; Amendment 

39–21347; AD 2020–25–05] 

RIN 2120–AA64 

Airworthiness Directives; Hoffmann 

GmbH & Co. KG Propellers 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all 

Hoffmann GmbH & Co. KG (Hoffmann) 

model HO–V 72 propellers. This AD 

was prompted by reports of cracks at 

different positions on two affected 

propeller hubs. This AD requires 

amending the existing aircraft flight 

manual (AFM) with abnormal propeller 

vibration instructions. This AD requires 

visual inspection and non-destructive 

test (NDT) inspection of the propeller 

hub and, depending on the results of the 

inspections, replacement of the 

propeller hub with a part eligible for 

installation. This AD also requires 

replacement of the propeller hub before 

exceeding 30 years since the date of 

manufacture or within 30 days after the 

effective date of this AD, whichever 

occurs later. The FAA is issuing this AD 

to address the unsafe condition on these 

products. 

DATES: This AD is effective December 

22, 2020. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of December 22, 2020. 

The FAA must receive comments on 

this AD by January 21, 2021. 

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 

https://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 final rule, contact Hoffmann 

Propeller GmbH & Co. KG, Sales and 

Service, Ku ̈pferlingstrasse 9, 83022, 

Rosenheim, Germany; phone: +49 (0) 

8031 1878 0; fax: +49 (0) 8031 1878 78; 

email: info@hoffmann-prop.com; 

website: https://hoffmann-prop.com/. 

You may view this service information 

at the FAA, Airworthiness Products 

Section, Operational Safety Branch, 

1200 District Avenue, Burlington, MA 

01803. For information on the 

availability of this material at the FAA, 

call (781) 238–7759. It is also available 

at https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2020–1104. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2020–1104; 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, any comments received, and 

other information. The street address for 

the Docket Operations is listed above. 

FOR FURTHER INFORMATION CONTACT: 

Michael Schwetz, Aviation Safety 

Engineer, Boston ACO Branch, FAA, 

1200 District Avenue, Burlington, MA 

01803; phone: (781) 238–7761; fax: (781) 

238–7199; email: michael.schwetz@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The European Union Aviation Safety 

Agency (EASA), which is the Technical 

Agent for the Member States of the 

European Community, has issued EASA 

AD 2020–0226–E, dated October 16, 

2020 (referred to after this as ‘‘the 

MCAI’’), to address an unsafe condition 

for the specified products. The MCAI 

states: 

Cracks have been reported at different 

positions on two affected parts, both installed 

on Slingsby T67 ‘‘Firefly’’ aeroplanes. One 

crack was found during scheduled 

inspection, the other crack during an 

unscheduled inspection after abnormal 

vibrations occurred. Both cases are under 

investigation by Hoffmann Propeller. 

This condition, if not detected and 

corrected, could lead to in-flight propeller 

detachment, possibly resulting in damage to 

the airplane and/or injury to persons on the 

ground. 

To address this potential unsafe condition, 

Hoffmann issued the SB [service bulletin], 

providing applicable instructions. 

For the reasons described above, this 

[EASA] AD requires inspections of affected 

parts and, depending on findings, 

replacement, and introduces a life limit for 

affected parts. This [EASA] AD also requires, 

for certain aeroplanes, amendment of the 

applicable Aircraft Flight Manual (AFM). 

You may obtain further information 

by examining the MCAI in the AD 

docket at https://www.regulations.gov 

by searching for and locating Docket No. 

FAA–2020–1104. 

FAA’s Determination 

The FAA is issuing this AD because 

the agency has determined the unsafe 

condition described previously is likely 

to exist or develop in other products of 

the same type design. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Hoffmann 

Propeller GmbH & Co. KG Service 

Bulletin SB E53, Rev. B, dated October 

14, 2020. This service information 

specifies procedures for visual and NDT 

inspections of the propeller hub for 

cracks. 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 

ADDRESSES. 

AD Requirements 

This AD requires amending the 

existing AFM with abnormal propeller 

vibration instructions. This AD also 

requires visual inspection and NDT 

inspection of the propeller hub and, 

depending on the results of the 

inspections, replacement of the 

propeller hub with a part eligible for 

installation. This AD also requires 

replacement of the propeller hub before 

exceeding 30 years since the date of 

manufacture or within 30 days after the 

effective date of this AD, whichever 

occurs later. 

Differences Between the AD and the 

MCAI 

EASA AD 2020–0226–E, dated 

October 16, 2020, applies to Hoffmann 

HO–V 72 propellers with propeller hub 

HO–V 72 ( ) ( )–( )–( ) that have been used 

or are expected to be used for aerobatic 

maneuvers. This AD applies to all 

Hoffmann model HO–V 72 propellers 

regardless of their use. 


khammond on DSKJM1Z7X2PROD with RULES
Federal Register / Vol. 85, No. 235 / Monday, December 7, 2020 / Rules and Regulations 78703 

EASA AD 2020–0226–E, dated 

October 16, 2020, defines the life of the 

propeller hub as 30 years since the first 

installation on the airplane. This AD 

defines the life of the propeller hub as 

30 years since the date of manufacture 

because the installation history of the 

propeller might be unknown. 

Interim Action 

The FAA considers this AD interim 

action. This unsafe condition is still 

under investigation by the manufacturer 

and, depending on the results of that 

investigation, the FAA may consider 

further rulemaking action. 

Justification for Immediate Adoption 

and Determination of the Effective Date 

Section 553(b)(3)(B) of the 

Administrative Procedure Act (APA) (5 

U.S.C. 551 et seq.) authorizes agencies 

to dispense with notice and comment 

procedures for rules when the agency, 

for ‘‘good cause,’’ finds that those 

procedures are ‘‘impracticable, 

unnecessary, or contrary to the public 

interest.’’ Under this section, an agency, 

upon finding good cause, may issue a 

final rule without providing notice and 

seeking comment prior to issuance. 

Further, section 553(d) of the APA 

authorizes agencies to make rules 

effective in less than thirty days, upon 

a finding of good cause. 

An unsafe condition exists that 

requires the immediate adoption of this 

AD without providing an opportunity 

for public comments prior to adoption. 

The FAA has found that the risk to the 

flying public justifies foregoing notice 

and comment prior to adoption of this 

rule. During a scheduled inspection, a 

crack was found by an operator on a 

propeller hub. A second crack was 

found on another propeller hub during 

an unscheduled inspection by an 

operator after abnormal vibrations 

occurred in-flight. Hoffmann Propeller 

immediately issued service information 

instructing operators to visually inspect 

the hub for cracks before the next flight 

while the cause of the cracks are under 

investigation. 

A crack in the propeller hub can 

result in the loss of a propeller blade, 

resulting in an imbalance in the entire 

engine which can render the aircraft 

uncontrollable. The FAA considers a 

crack in the propeller hub an urgent 

safety issue that requires an immediate 

action to avoid potential loss of the 

airplane. Accordingly, notice and 

opportunity for prior public comment 

are impracticable and contrary to the 

public interest pursuant to 5 U.S.C. 

553(b)(3)(B). In addition, the FAA finds 

that good cause exists pursuant to 5 

U.S.C. 553(d) for making this 

amendment effective in less than 30 

days, for the same reasons the FAA 

found good cause to forego notice and 

comment. 

Comments Invited 

The FAA invites you to send any 

written data, views, or arguments about 

this final rule. Send your comments to 

an address listed under ADDRESSES. 

Include the docket number FAA–2020– 

1104 and Project Identifier MCAI–2020– 

01421–P at the beginning of your 

comments. The most helpful comments 

reference a specific portion of the final 

rule, explain the reason for any 

recommended change, and include 

supporting data. The FAA will consider 

all comments received by the closing 

date and may amend this final rule 

because of those comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to https://

www.regulations.gov, including any 

personal information you provide. The 

agency will also post a report 

summarizing each substantive verbal 

contact received about this final rule. 

Confidential Business Information 

CBI is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

(FOIA) (5 U.S.C. 552), CBI is exempt 

from public disclosure. If your 

comments responsive to this AD contain 

commercial or financial information 

that is customarily treated as private, 

that you actually treat as private, and 

that is relevant or responsive to this AD, 

it is important that you clearly designate 

the submitted comments as CBI. Please 

mark each page of your submission 

containing CBI as ‘‘PROPIN.’’ The FAA 

will treat such marked submissions as 

confidential under the FOIA, and they 

will not be placed in the public docket 

of this AD. Submissions containing CBI 

should be sent to Michael Schwetz, 

Aviation Safety Engineer, Boston ACO 

Branch, FAA, 1200 District Avenue, 

Burlington, MA 01803. Any 

commentary that the FAA receives 

which is not specifically designated as 

CBI will be placed in the public docket 

for this rulemaking. 

Regulatory Flexibility Act 

The requirements of the Regulatory 

Flexibility Act (RFA) do not apply when 

an agency finds good cause pursuant to 

5 U.S.C. 553 to adopt a rule without 

prior notice and comment. Because FAA 

has determined that it has good cause to 

adopt this rule without prior notice and 

comment, RFA analysis is not required. 

Costs of Compliance 

The FAA estimates that this AD 

affects 35 propellers installed on 

airplanes of U.S. registry. 

The FAA estimates the following 

costs to comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Amend AFM ............................ 1 work-hour × $85 per hour = $85 ......................................... $0 $85 $2,975 

Visually inspect propeller hub 1 work-hour × $85 per hour = $85 ......................................... 0 85 2,975 

NDT inspect propeller hub ...... 8 work-hours × $85 per hour = $680 ..................................... 0 680 23,800 

The FAA estimates the following 

costs to do any necessary replacement 

that would be required based on the 

results of the inspections. The agency 

has no way of determining the number 

of aircraft that might need this 

replacement: 


khammond on DSKJM1Z7X2PROD with RULES
78704 Federal Register / Vol. 85, No. 235 / Monday, December 7, 2020 / Rules and Regulations 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Replace propeller hub .................................................. 5 work-hours × $85 per hour = $425 ........................... $1,600 $2,025 

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. 

The FAA is 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, 

and 

(2) Will not affect intrastate aviation 

in Alaska. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

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: 

2020–25–05 Hoffmann GmbH & Co. KG: 

Amendment 39–21347; Docket No. 

FAA–2020–1104; Project Identifier 

MCAI–2020–01421–P. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective December 22, 2020. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to all Hoffmann GmbH & 

Co. KG (Hoffmann) model HO–V 72 

propellers. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 6114, Propeller Hub Section. 

(e) Unsafe Condition 

This AD was prompted by reports of cracks 

at different positions on two affected 

propeller hubs. The FAA is issuing this AD 

to prevent failure of the propeller hub. The 

unsafe condition, if not addressed, could 

result in release of the propeller, damage to 

the airplane, and injury to persons on the 

ground. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

(1) Before the next flight after the effective 

date of this AD, amend the existing aircraft 

flight manual by inserting the procedure: 

‘‘Abnormal propeller vibrations: As 

applicable, reduce engine RPM.’’ 

(2) Before the next flight after the effective 

date of this AD, and thereafter, before the 

next flight after any flight where abnormal 

propeller vibrations have been experienced, 

visually inspect propeller hub HO–V 72 ( ) 

( )–( )–( ) for cracks using paragraph 2.1 of 

Hoffmann Propeller GmbH & Co. KG Service 

Bulletin SB E53, Rev. B, dated October 14, 

2020 (the SB). 

(3) Within 20 flight hours after the effective 

date of this AD, perform a non-destructive 

test (NDT) inspection of propeller hub HO– 

V 72 ( ) ( )–( )–( ) using paragraph 2.3 of the 

SB. 

(4) If, during any inspection required by 

paragraph (g)(2) or (3) of this AD, any crack 

is detected, replace propeller hub HO–V 72 

( ) ( )–( )–( ) with a part eligible for installation. 

(5) During each overhaul of propeller hub 

HO–V 72 ( ) ( )–( )–( ) after the effective date 

of this AD, perform an NDT inspection using 

paragraph 2.3 of the SB. 

(6) Before exceeding 30 years since the date 

of manufacture, or within 30 days after the 

effective date of this AD, whichever occurs 

later, replace propeller hub HO–V 72 ( ) ( )– 

( )–( ) with a part eligible for installation. 

(h) Definition 

For the purpose of this AD, a ‘‘part eligible 

for installation’’ is a propeller hub HO–V 72 

( ) ( )–( )–( ) with zero hours time since new or 

a propeller hub HO–V 72 ( ) ( )–( )–( ) that has 

accumulated fewer than 30 years since the 

date of manufacture and has passed an NDT 

inspection using paragraph 2.3 of the SB. 

(i) Non-Required Actions 

(1) Sending the propeller to Hoffmann for 

investigation, as contained in paragraph 2.1 

of the SB, is not required by this AD. 

(2) Reporting propeller hubs with cracks to 

Hoffmann, as contained in paragraph 2.3 of 

the SB, is not required by this AD. 

(j) Credit for Previous Actions 

You may take credit for the initial visual 

inspection and NDT inspection of the 

propeller hub required by paragraphs (g)(2), 

(3), and (5) of this AD if you performed any 

of these actions before the effective date of 

this AD using Hoffmann Propeller GmbH & 

Co. KG SB E53 Rev. A, dated October 9, 2020. 

(k) Special Flight Permit 

A special flight permit may be issued in 

accordance with 14 CFR 21.197 and 21.199 

to operate the airplane to a service facility to 

perform the NDT inspection. Special flight 

permits are prohibited to perform the visual 

inspection of the propeller hub. 

(l) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Boston 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 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. 

(m) Related Information 

(1) For more information about this AD, 

contact Michael Schwetz, Aviation Safety 

Engineer, Boston ACO Branch, FAA, 1200 

District Avenue, Burlington, MA 01803; 

phone: (781) 238–7761; fax: (781) 238–7199; 

email: michael.schwetz@faa.gov. 

(2) Refer to European Union Aviation 

Safety Agency (EASA) AD 2020–0226–E, 

dated October 16, 2020, for more 


khammond on DSKJM1Z7X2PROD with RULES
Federal Register / Vol. 85, No. 235 / Monday, December 7, 2020 / Rules and Regulations 78705 

information. You may examine the EASA AD 

in the AD docket at https://

www.regulations.gov by searching for and 

locating it in Docket No. FAA–2020–1104. 

(n) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(i) Hoffmann Propeller GmbH & Co. KG 

(Hoffmann) Service Bulletin SB E53, Rev. B, 

dated October 14, 2020. 

(ii) [Reserved] 

(3) For Hoffmann service information 

identified in this AD, contact Hoffmann 

Propeller GmbH & Co. KG, Sales and Service, 

Ku ̈pferlingstrasse 9, 83022, Rosenheim, 

Germany; phone: +49 (0) 8031 1878 0; fax: 

+49 (0) 8031 1878 78; email: info@hoffmannprop.com; website: https://hoffmannprop.com/. 

(4) You may view this service information 

at FAA, Airworthiness Products Section, 

Operational Safety Branch, 1200 District 

Avenue, Burlington, MA 01803. For 

information on the availability of this 

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

(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, 

email: fedreg.legal@nara.gov, or go to: 

https://www.archives.gov/federal-register/cfr/ 

ibr-locations.html. 

Issued on November 30, 2020. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2020–26765 Filed 12–4–20; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2020–0810; Airspace 

Docket No. 19–ANM–101] 

RIN 2120–AA66 

Amendment of Class D and Class E 

Airspace; Helena, MT 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: This action modifies the Class 

D airspace at Helena Regional Airport. 

This action also modifies the Class E 

airspace, designated as a surface area. 

Additionally, this action establishes 

Class E airspace, designated as an 

extension to a Class D or Class E surface 

area. Further, this action modifies the 

Class E airspace, extending upward 

from 700 feet above the surface. Also, 

this action modifies the Class E airspace 

extending upward from 1,200 feet above 

the surface. This action removes the 

Helena VORTAC from the airspace legal 

descriptions. Lastly, this action 

implements administrative corrections 

to the airspaces’ legal descriptions. 

DATES: Effective 0901 UTC, February 25, 

2021. The Director of the Federal 

Register approves this incorporation by 

reference action under Title 1 Code of 

Federal Regulations part 51, subject to 

the annual revision of FAA Order 

7400.11 and publication of conforming 

amendments. 

ADDRESSES: FAA Order 7400.11E, 

Airspace Designations and Reporting 

Points, and subsequent amendments can 

be viewed online at https://

www.faa.gov//air_traffic/publications/. 

For further information, you can contact 

the Airspace Policy Group, Federal 

Aviation Administration, 800 

Independence Avenue SW, Washington, 

DC 20591; telephone: (202) 267–8783. 

The Order is also available for 

inspection at the National Archives and 

Records Administration (NARA). For 

information on the availability of FAA 

Order 7400.11E at NARA, email 

fedreg.legal@nara.gov or go to https://

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

ibr-locations.html. 

FOR FURTHER INFORMATION CONTACT: 

Matthew Van Der Wal, Federal Aviation 

Administration, Western Service Center, 

Operations Support Group, 2200 S. 

216th Street, Des Moines, WA 98198; 

telephone (206) 231–3695. 

SUPPLEMENTARY INFORMATION: 

Authority for This Rulemaking 

The FAA’s authority to issue rules 

regarding aviation safety is found in 

Title 49 of the United States Code. 

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. This rulemaking is 

promulgated under the authority 

described in Subtitle VII, Part A, 

Subpart I, Section 40103. Under that 

section, the FAA is charged with 

prescribing regulations to assign the use 

of airspace necessary to ensure the 

safety of aircraft and the efficient use of 

airspace. This regulation is within the 

scope of that authority as it modifies 

Class D and Class E airspace at Helena 

Regional Airport, Helena, MT, to ensure 

the safety and management of 

Instrument Flight Rules (IFR) operations 

at the airport. 

History 

The FAA published a notice of 

proposed rulemaking in the Federal 

Register (85 FR 59700; September 23, 

2020) for Docket No. FAA–2020–00810 

to modify Class D and Class E airspace 

at Helena Regional Airport, Helena, MT. 

Interested parties were invited to 

participate in this rulemaking effort by 

submitting written comments on the 

proposal to the FAA. One comment, that 

is not germane to the proposed airspace 

action, was received. 

Class D, E2, E4, and E5 airspace 

designations are published in 

paragraphs 5000, 6002, 6004, and 6005, 

respectively, of FAA Order 7400.11E, 

dated July 21, 2020, and effective 

September 15, 2020, which is 

incorporated by reference in 14 CFR 

71.1. The Class E airspace designation 

listed in this document will be 

published subsequently in the Order. 

Availability and Summary of 

Documents for Incorporation by 

Reference 

This document amends FAA Order 

7400.11E, Airspace Designations and 

Reporting Points, dated July 21, 2020, 

and effective September 15, 2020. FAA 

Order 7400.11E is publicly available as 

listed in the ADDRESSES section of this 

document. FAA Order 7400.11E lists 

Class A, B, C, D, and E airspace areas, 

air traffic service routes, and reporting 

points. 

The Rule 

This amendment to Title 14 Code of 

Federal Regulations part 71 modifies the 

Class D airspace at Helena Regional 

Airport, Helena, MT. The action 

modifies the Class D airspace by adding 

extensions to the east and west of the 

airport, to properly contain IFR 

departures to 700 feet above the surface. 

The airspace area is described as 

follows: That airspace extending 

upward from the surface to and 

including 6,400 feet within a 4.4-mile 

radius of the airport, and within 2 miles 

each side of the 091° bearing from the 

airport, extending from the 4.4-mile 

radius to 5.2 miles east of the airport, 

and within 2 miles each side of 292° 

bearing from the airport, extending from 

the 4.4-mile radius to 5.8 miles west of 

Helena Regional Airport. This Class D 

airspace area is effective during the 

specific dates and times established in 

advance by a Notice to Airmen. The 

effective date and time will thereafter be 

continuously published in the Chart 

Supplement. This action also modifies 

the Class E airspace, designated as a 

surface area, to be coincident with the 

new Class D dimensions. The airspace 


khammond on DSKJM1Z7X2PROD with RULES