52600 Federal Register / Vol. 86, No. 181 / Wednesday, September 22, 2021 / Rules and Regulations 

determined that notice and public 

procedures are unnecessary. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

Adoption of the Correction 

Accordingly, pursuant to the 

authority delegated to me by the 

Administrator, the Federal Aviation 

Administration amends part 39 of the 

Federal Aviation Regulations (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 [Corrected] 

■ 2. The FAA corrects § 39.13 by 

correcting the airworthiness directive 

published at (86 FR 50451) (October 14, 

2021) to read: 

2021–17–14 Gulfstream Aerospace LP: 

Amendment 39–21697; Docket No. 

FAA–2021–0459; Project Identifier 

MCAI–2021–00129–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective October 14, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Gulfstream Aerospace 

LP Model Gulfstream G280 airplanes, 

certificated in any category, as identified in 

The Civil Aviation Authority of Israel (CAAI) 

AD ISR–I–57–2020–06–01, dated January 27, 

2021 (CAAI AD ISR–I–57–2020–06–01). 

(d) Subject 

Air Transport Association (ATA) of 

America Code 57, Wings. 

(e) Reason 

This AD was prompted by a report that 

during full-scale fatigue testing, a crack was 

found in the area of the attachment of the 

wing rib 0 to the front spar. The FAA is 

issuing this AD to address any cracking at the 

area of the wing rib 0 to the front spar, which 

could affect the structural integrity of the 

wing. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Requirements 

Except as specified in paragraph (h) of this 

AD: Comply with all required actions and 

compliance times specified in, and in 

accordance with, CAAI AD ISR–I–57–2020– 

06–01. 

(h) Exception to CAAI AD ISR–I–57–2020– 

06–01 

Where CAAI AD ISR–I–57–2020–06–01 

requires compliance ‘‘not later than 5,000 

flight cycles,’’ this AD requires compliance 

before the accumulation of 5,000 total flight 

cycles since the date of issuance of the 

original Israeli airworthiness certificate or the 

date of issuance of the original Israeli export 

certificate of airworthiness. 

(i) No Reporting Requirement 

Although the service information 

referenced in CAAI AD ISR–I–57–2020–06– 

01 specifies to submit certain information to 

the manufacturer, this AD does not include 

that requirement. 

(j) Additional AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, Large Aircraft 

Section, International Validation 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 responsible Flight 

Standards Office, as appropriate. If sending 

information directly to the Large Aircraft 

Section, International Validation Branch, 

send it to the attention of the person 

identified in paragraph (k) of this AD. 

Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov. Before using any 

approved AMOC, notify your appropriate 

principal inspector, or lacking a principal 

inspector, the manager of the responsible 

Flight Standards Office. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain instructions 

from a manufacturer, the instructions must 

be accomplished using a method approved 

by the Manager, Large Aircraft Section, 

International Validation Branch, FAA; or 

CAAI; or CAAI’s authorized Designee. If 

approved by the CAAI Designee, the approval 

must include the Designee’s authorized 

signature. 

(k) Related Information 

For more information about this AD, 

contact Tom Rodriguez, Aerospace Engineer, 

Large Aircraft Section, International 

Validation Branch, FAA, 2200 South 216th 

St., Des Moines, WA 98198; telephone and 

fax 206–231–3226; email Tom.Rodriguez@

faa.gov. 

(l) 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 this AD specifies otherwise. 

(3) The following service information was 

approved for IBR on October 14, 2021 (86 FR 

50451, September 9, 2021). 

(i) Civil Aviation Authority of Israel (CAAI) 

AD ISR–I–57–2020–06–01, dated January 27, 

2021. 

(ii) [Reserved] 

(4) For CAAI AD ISR–I–57–2020–06–01, 

contact CAAI, P.O. Box 1101, Golan Street, 

Airport City, 70100, Israel; telephone 972–3– 

9774665; fax 972–3–9774592; email aip@

mot.gov.il. You may find this CAAI AD on 

the CAAI website at https://www.caa.gov.il. 

(5) You may view this service information 

at the FAA, Airworthiness Products Section, 

Operational Safety Branch, 2200 South 216th 

St., Des Moines, WA. For information on the 

availability of this material at the FAA, call 

206–231–3195. 

(6) 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 fr.inspection@nara.gov, or go to: 

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

ibr-locations.html. 

Issued on September 16, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–20404 Filed 9–21–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0515; Project 

Identifier AD–2021–00191–E; Amendment 

39–21739; AD 2021–20–01] 

RIN 2120–AA64 

Airworthiness Directives; Pratt & 

Whitney Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all Pratt 

& Whitney PW1500G and PW1900G 

series turbofan engines with a certain 

high-pressure turbine (HPT) 1st-stage 

hub or HPT rotor 1st-stage blade 

retaining plate installed. This AD was 

prompted by a report from the 

manufacturer who determined that the 

HPT 1st-stage hub and HPT rotor 1ststage blade retaining plate fail to meet 

the published life-cycle limits for each 

part. This AD requires removal and 

replacement of the HPT 1st-stage hub 

and HPT rotor 1st-stage blade retaining 

plate prior to reaching certain cycle 

limits. The FAA is issuing this AD to 

address the unsafe condition on these 

products. 

DATES: This AD is effective October 27, 

2021. 

ADDRESSES: For service information 

identified in this final rule, contact Pratt 

& Whitney, 400 Main Street, East 

Hartford, CT 06118; phone: (800) 565– 

Federal Register / Vol. 86, No. 181 / Wednesday, September 22, 2021 / Rules and Regulations 52601 

0140; fax: (860) 565–5442; email: 

help24@prattwhitney.com; website: 

https://fleetcare.prattwhitney.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–2021– 

0515. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0515; 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 address for 

Docket Operations is 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: 

Mark Taylor, Aviation Safety Engineer, 

ECO Branch, FAA, 1200 District 

Avenue, Burlington, MA 01803; phone: 

(781) 238–7229; fax: (781) 238–7199; 

email: Mark.Taylor@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to all Pratt & Whitney PW1500G 

and PW1900G series turbofan engines 

with a certain HPT 1st-stage hub or HPT 

rotor 1st-stage blade retaining plate 

installed. The NPRM published in the 

Federal Register on June 29, 2021 (86 

FR 34166). The NPRM was prompted by 

a report from the manufacturer who 

determined that the HPT 1st-stage hub 

and HPT rotor 1st-stage blade retaining 

plate fail to meet the published lifecycle limits for each part. In the NPRM, 

the FAA proposed to require removal 

and replacement of the HPT 1st-stage 

hub and HPT rotor 1st-stage blade 

retaining plate prior to reaching certain 

cycle limits. The FAA is issuing this AD 

to address the unsafe condition on these 

products. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received comments from 

two commenters. The commenters were 

Delta Air Lines, Inc. (DAL) and the Air 

Line Pilots Association, International 

(ALPA). The following presents the 

comments received on the NPRM and 

the FAA’s response to each comment. 

Request To Correct Required Actions 

DAL requested that the FAA change 

paragraph (g)(1)(ii) of this AD from 

removing the affected part and replacing 

with a part eligible for installation ‘‘at 

the next engine shop visit after 

accumulating 4,700 CSN. . .’’ to ‘‘at the 

next engine shop visit after 

accumulating 4,960 CSN. . .’’ to mirror 

the 4,960 CSN listed earlier in the 

paragraph. DAL suggested that ‘‘4,700 

CSN’’ is a typographical error. 

The FAA disagrees that ‘‘4,700 CSN’’ 

is a typographical error. It is the cyclic 

value at which point certain HPT parts 

are to be removed from service. In 

contrast, ‘‘4,960 CSN on the effective 

date of this AD’’ is a calculated point at 

which HPT-part removal requirements 

transition from the requirements of 

paragraph (g)(1)(ii) of this AD to the 

requirements of paragraph (g)(1)(iii) of 

this AD. ‘‘4,960 CSN’’ and ‘‘4,700 CSN’’ 

are different in their function and how 

they are calculated. The FAA did not 

change this AD. 

Support for the AD 

ALPA expressed support for the 

NPRM as written. 

Conclusion 

The FAA reviewed the relevant data, 

considered any comments received, and 

determined that air safety requires 

adopting this AD as proposed. 

Accordingly, the FAA is issuing this AD 

to address the unsafe condition on these 

products. This AD is adopted as 

proposed in the NPRM. 

Related Service Information 

The FAA reviewed Pratt & Whitney 

Service Bulletin (SB) PW1000G–A–72– 

00–0115–00B–930A–D, Issue No. 001, 

dated April 26, 2021, and Pratt & 

Whitney SB PW1000G–A–72–00–0168– 

00A–930A–D, Issue No. 001, dated 

April 26, 2021. These SBs describe 

procedures for removing and replacing 

the HPT 1st-stage hub and HPT rotor 

1st-stage blade retaining plate. 

Costs of Compliance 

The FAA estimates that this AD 

affects 88 engines installed on airplanes 

of U.S. registry. The FAA estimates that 

in most cases the affected HPT 1st-stage 

hub and the affected HPT 1st-stage 

blade retaining plate will both be 

replaced during the same disassembly of 

the engine. This cost estimate therefore 

reflects the cost of replacing both parts 

during the same engine disassembly. 

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 

Replace HPT 1st-stage hub and HPT rotor 

1st-stage blade retaining plate (pro-rated 

part cost).

300 work-hours × $85 per hour = $25,500 .... $86,252 $111,752 $9,834,176 

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 

52602 Federal Register / Vol. 86, No. 181 / Wednesday, September 22, 2021 / Rules and Regulations 

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) Will not affect intrastate aviation 

in Alaska, and 

(3) 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 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: 

2021–20–01 Pratt & Whitney: Amendment 

39–21739; Docket No. FAA–2021–0515; 

Project Identifier AD–2021–00191–E. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective October 27, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Pratt & Whitney 

PW1519G, PW1521G, PW1521G–3, 

PW1521GA, PW1524G, PW1524G–3, 

PW1525G, PW1525G–3, PW1919G, 

PW1921G, PW1922G, PW1923G, and 

PW1923G–A model turbofan engines with a 

high-pressure turbine (HPT) 1st-stage hub, 

part number (P/N) 30G5701, or an HPT rotor 

1st-stage blade retaining plate, P/N 30G1692, 

installed. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7250, Turbine Section. 

(e) Unsafe Condition 

This AD was prompted by a report from 

the manufacturer who determined that the 

HPT 1st-stage hub and HPT rotor 1st-stage 

blade retaining plate fail to meet the 

published life-cycle limits for each part. The 

FAA is issuing this AD to prevent failure of 

the HPT 1st-stage hub or HPT rotor 1st-stage 

blade retaining plate. The unsafe condition, 

if not addressed, could result in the release 

of the HPT 1st-stage hub or HPT rotor 1ststage blade retaining plate, damage to the 

engine, and damage to the aircraft. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

(1) For PW1519G, PW1521G, PW1521G–3, 

PW1521GA, PW1524G, and PW1524G–3 

model turbofan engines: 

(i) For an affected HPT 1st-stage hub and 

an affected HPT rotor 1st-stage blade 

retaining plate with 3,000 cycles since new 

(CSN) or fewer on the effective date of this 

AD, before the affected part exceeds 4,700 

CSN, remove the affected part, as applicable, 

and replace with a part eligible for 

installation. 

(ii) For an affected HPT 1st-stage hub and 

an affected HPT rotor 1st-stage blade 

retaining plate with greater than 3,000 CSN 

but fewer than 4,960 CSN on the effective 

date of the AD, at the next engine shop visit 

after accumulating 4,700 CSN or before the 

affected part exceeds 5,260 CSN, whichever 

occurs first, remove the affected part, as 

applicable, and replace with a part eligible 

for installation. 

(iii) For an affected HPT 1st-stage hub and 

an affected HPT rotor 1st-stage blade 

retaining plate with 4,960 CSN or greater on 

the effective date of the AD, at the next 

engine shop visit or within 300 cycles after 

the effective date of this AD, whichever 

occurs first, remove the affected part, as 

applicable, and replace with a part eligible 

for installation. 

(2) For PW1919G and PW1921G model 

turbofan engines: 

(i) For an affected HPT 1st-stage hub and 

an affected HPT rotor 1st-stage blade 

retaining plate with 3,000 CSN or fewer on 

the effective date of this AD, before the 

affected part exceeds 4,700 CSN, remove the 

affected part, as applicable, and replace with 

a part eligible for installation. 

(ii) For an affected HPT 1st-stage hub and 

an affected HPT rotor 1st-stage blade 

retaining plate with greater than 3,000 CSN 

but fewer than 4,700 CSN on the effective 

date of the AD, at the next engine shop visit 

after the affected part accumulates 4,700 CSN 

or before the affected part exceeds 5,000 

CSN, whichever occurs first, remove the 

affected part, as applicable, and replace with 

a part eligible for installation. 

(iii) For an affected HPT 1st-stage hub and 

an affected HPT rotor 1st-stage blade 

retaining plate with 4,700 CSN or greater on 

the effective date of the AD, at the next 

engine shop visit or within 300 cycles after 

the effective date of this AD, whichever 

occurs first, remove the affected part, as 

applicable, and replace with a part eligible 

for installation. 

(3) For PW1525G and PW1525G–3 model 

turbofan engines: 

(i) Before the affected HPT 1st-stage hub 

and affected HPT rotor 1st-stage blade 

retaining plate exceeds 2,800 CSN, 

respectively, or within 300 cycles after the 

effective date of this AD, whichever occurs 

later, remove the affected part, as applicable, 

and replace with a part eligible for 

installation. 

(ii) [Reserved] 

(4) For PW1922G, PW1923G, and 

PW1923G–A model turbofan engines: 

(i) Before the affected HPT 1st-stage hub 

and affected HPT rotor 1st-stage blade 

retaining plate exceeds 3,000 CSN, 

respectively, or within 300 cycles after the 

effective date of this AD, whichever occurs 

later, remove the affected part, as applicable, 

and replace with a part eligible for 

installation. 

(ii) [Reserved] 

(h) Definitions 

(1) For the purpose of this AD, an ‘‘engine 

shop visit’’ is the induction of an engine into 

the shop for maintenance involving the 

separation of pairs of major mating engine 

case flanges, except for the following, which 

do not constitute an engine shop visit: 

(i) Separation of engine flanges solely for 

the purposes of transportation without 

subsequent maintenance does not constitute 

an engine shop visit. 

(ii) Separation of engine flanges solely for 

the purpose of replacing the fan without 

subsequent maintenance does not constitute 

an engine shop visit. 

(2) For the purpose of this AD, a ‘‘part 

eligible for installation’’ is: 

(i) For PW1519G, PW1521G, PW1521G–3, 

PW1521GA, PW1524G, PW1524G–3, 

PW1919G, and PW1921G model turbofan 

engines: 

(A) Any HPT 1st-stage hub with P/N 

30G5701 with 4,700 CSN or fewer, or with 

a P/N not listed in this AD. 

(B) Any HPT rotor 1st-stage blade retaining 

plate with P/N 30G1692 with 4,700 CSN or 

fewer, or with a P/N not listed in this AD. 

(ii) For PW1525G and PW1525G–3 model 

turbofan engines: 

(A) Any HPT 1st-stage hub with P/N 

30G5701 with 2,800 CSN or fewer, or with 

a P/N not listed in this AD. 

(B) Any HPT rotor 1st-stage blade retaining 

plate with P/N 30G1692 with 2,800 CSN or 

fewer, or with a P/N not listed in this AD. 

(iii) For PW1922G, PW1923G, and 

PW1923G–A model turbofan engines: 

(A) Any HPT 1st-stage hub with P/N 

30G5701 with 3,000 CSN or fewer, or with 

a P/N not listed in this AD. 

(B) Any HPT rotor 1st-stage blade retaining 

plate with P/N 30G1692 with 3,000 CSN or 

fewer, or with a P/N not listed in this AD. 

(i) Alternative Methods of Compliance 

(AMOCs) 

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

the authority to approve AMOCs for this AD, 

if requested using the procedures found in 14 

CFR 39.19. In accordance with 14 CFR 39.19, 

send your request to your principal inspector 

or local Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the certification office, 

send it to the attention of the person 

identified in paragraph (j) 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 

Federal Register / Vol. 86, No. 181 / Wednesday, September 22, 2021 / Rules and Regulations 52603 

of the local flight standards district office/ 

certificate holding district office. 

(j) Related Information 

For more information about this AD, 

contact Mark Taylor, Aviation Safety 

Engineer, ECO Branch, FAA, 1200 District 

Avenue, Burlington, MA 01803; phone: (781) 

238–7229; fax: (781) 238–7199; email: 

Mark.Taylor@faa.gov. 

(k) Material Incorporated by Reference 

None. 

Issued on September 14, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–20365 Filed 9–21–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2021–0518; Airspace 

Docket No. 21–ASW–12] 

RIN 2120–AA66 

Amendment of Class E Airspace; 

Oklahoma City, OK 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: This action amends the Class 

E airspace at Sundance Airport, 

Oklahoma City, OK. This action is the 

result of an airspace review due to the 

decommissioning of the Sundance 

Localizer (LOC). 

DATES: Effective 0901 UTC, December 2, 

2021. The Director of the Federal 

Register approves this incorporation by 

reference action under 1 CFR part 51, 

subject to the annual revision of FAA 

Order JO 7400.11 and publication of 

conforming amendments. 

ADDRESSES: FAA Order JO 7400.11F, 

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 JO 7400.11F at NARA, email: 

fr.inspection@nara.gov or go to https:// 

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

ibr-locations.html. 

FOR FURTHER INFORMATION CONTACT: 

Jeffrey Claypool, Federal Aviation 

Administration, Operations Support 

Group, Central Service Center, 10101 

Hillwood Parkway, Fort Worth, TX 

76177; telephone (817) 222–5711. 

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 amends the 

Class E airspace extending upward from 

700 feet above the surface at Sundance 

Airport, Oklahoma City, OK, to support 

instrument flight rule operations at 

these airports. 

History 

The FAA published a notice of 

proposed rulemaking in the Federal 

Register (86 FR 34168; June 29, 2021) 

for Docket No. FAA–2021–0518 to 

amend the Class E airspace at Sundance 

Airport, Oklahoma City, OK. Interested 

parties were invited to participate in 

this rulemaking effort by submitting 

written comments on the proposal to the 

FAA. No comments were received. 

Class E airspace designations are 

published in paragraph 6005 of FAA 

Order JO 7400.11F, dated August 10, 

2021, and effective September 15, 2021, 

which is incorporated by reference in 14 

CFR 71.1. The Class E airspace 

designations 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 JO 

7400.11F, Airspace Designations and 

Reporting Points, dated August 10, 

2021, and effective September 15, 2021. 

FAA Order JO 7400.11F is publicly 

available as listed in the ADDRESSES

section of this document. FAA Order JO 

7400.11F lists Class A, B, C, D, and E 

airspace areas, air traffic service routes, 

and reporting points. 

The Rule 

This amendment to 14 CFR part 71 

amends the Class E airspace extending 

upward from 700 feet above the surface 

to within a 6.5-mile (decreased from a 

6.8-mile) radius of Sundance Airport, 

Oklahoma City, OK. 

This action is the result of an airspace 

review caused by the decommissioning 

of the Sundance LOC which provided 

guidance to instrument procedures at 

this airport. 

FAA Order JO 7400.11, Airspace 

Designations and Reporting Points, is 

published yearly and effective on 

September 15. 

Regulatory Notices and Analyses 

The FAA has determined that this 

regulation only involves an established 

body of technical regulations for which 

frequent and routine amendments are 

necessary to keep them operationally 

current, is non-controversial and 

unlikely to result in adverse or negative 

comments. It, therefore: (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); and (3) 

does not warrant preparation of a 

regulatory evaluation as the anticipated 

impact is so minimal. Since this is a 

routine matter that only affects air traffic 

procedures and air navigation, it is 

certified that this rule, when 

promulgated, does not have a significant 

economic impact on a substantial 

number of small entities under the 

criteria of the Regulatory Flexibility Act. 

Environmental Review 

The FAA has determined that this 

action qualifies for categorical exclusion 

under the National Environmental 

Policy Act in accordance with FAA 

Order 1050.1F, ‘‘Environmental 

Impacts: Policies and Procedures,’’ 

paragraph 5–6.5.a. This airspace action 

is not expected to cause any potentially 

significant environmental impacts, and 

no extraordinary circumstances exist 

that warrant preparation of an 

environmental assessment. 

Lists of Subjects in 14 CFR Part 71 

Airspace, Incorporation by reference, 

Navigation (air). 

Adoption of the Amendment 

In consideration of the foregoing, the 

Federal Aviation Administration 

amends 14 CFR part 71 as follows: