48086 Federal Register / Vol. 86, No. 164 / Friday, August 27, 2021 / Proposed Rules 

following the Accomplishment Instructions, 

Part A or Part AA, in ASI Aviation Service 

Bulletin No. F406–104, Revision 1, dated 

December 14, 2018. 

(2) Within 100 hours TIS after the effective 

date of this AD, and thereafter at intervals not 

to exceed 2,400 hours TIS, do a magnetic 

particle inspection for cracks of the LH and 

RH rudder control pedal torque tubes by 

following the Accomplishment Instructions, 

Part B, in ASI Aviation Service Bulletin No. 

F406–104, Revision 1, dated December 14, 

2018. 

(3) If, during any inspection required by 

paragraph (h)(1) or (2) of this AD, any crack 

is detected on a rudder control pedal torque 

tube, you are not required to contact ASI 

Aviation as specified in steps A.16, AA.5, 

and B.4 of ASI Aviation Service Bulletin No. 

F406–104, Revision 1, dated December 14, 

2018. Instead, before further flight, replace 

the rudder control pedal torque tube with a 

serviceable part as defined by this AD. 

(i) Installation Limitation 

As of the effective date of this AD, do not 

install a rudder control pedal torque tube P/ 

N 5115260–1 (LH) or P/N 5115260–2 (RH) on 

any airplane unless it is a serviceable part as 

defined by this AD. 

(j) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, 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 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 or email: 9- 

AVS-AIR-730-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 Gregory Johnson, Aviation Safety 

Engineer, FAA, General Aviation & Rotorcraft 

Section, International Validation Branch, 901 

Locust, Room 301, Kansas City, MO 64106; 

phone: (720) 626–5462; fax: (816) 329–4090; 

email: gregory.johnson@faa.gov. 

(2) Refer to European Aviation Safety 

Agency (EASA) AD 2019–0016, dated 

January 29, 2019, for more 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–2021– 

0712. 

(3) For service information identified in 

this AD, contact ASI Aviation, Ae ́rodrome de 

Reims Prunay, 51360 Prunay, France; 

telephone: +33 3 26 48 46 84; fax: +33 3 26 

49 18 57; email: contact@asi-aviation.fr; 

website: https://asi-aviation.fr/pageAccueil.html. You may view this service 

information at the Airworthiness Products 

Section, Operational Safety Branch, FAA, 

901 Locust, Kansas City, MO 64106. For 

information on the availability of this 

material at the FAA, call (816) 329–4148. 

Issued on August 20, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–18384 Filed 8–26–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0711; Project 

Identifier 2019–CE–024–AD] 

RIN 2120–AA64 

Airworthiness Directives; Pacific 

Aerospace Limited Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain Pacific Aerospace Limited 

Model 750XL airplanes. This proposed 

AD was prompted by mandatory 

continuing airworthiness information 

(MCAI) originated by an aviation 

authority of another country to identify 

and correct an unsafe condition on an 

aviation product. The MCAI describes 

the unsafe condition as chafing of the 

engine fuel feed line hoses. This 

proposed AD would require inspecting 

the engine fuel feed line hoses and the 

electrical wiring and rerouting all fuel 

lines. The FAA is proposing this AD to 

address the unsafe condition on these 

products. 

DATES: The FAA must receive comments 

on this proposed AD by October 12, 

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 NPRM, contact the Civil Aviation 

Authority of New Zealand, Level 15, 

Asteron Centre, 55 Featherston Street, 

Wellington 6011; phone: + 64 4 560 

9400; fax: + 64 4 569 2024; email: info@

caa.govt.nz. You may view this service 

information at the FAA, Airworthiness 

Products Section, Operational Safety 

Branch, 901 Locust, Kansas City, MO 

64106. For information on the 

availability of this material at the FAA, 

call (816) 329–4148. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0711; 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 MCAI, any comments 

received, and other information. The 

street address for Docket Operations is 

listed above. 

FOR FURTHER INFORMATION CONTACT: 

Mike Kiesov, Aviation Safety Engineer, 

General Aviation & Rotorcraft Section, 

International Validation Branch, FAA, 

901 Locust, Room 301, Kansas City, MO 

64106; phone: (816) 329–4144; fax: (816) 

329–4090; email: mike.kiesov@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this proposal. Send 

your comments to an address listed 

under ADDRESSES. Include ‘‘Docket No. 

FAA–2021–0711; Project Identifier 

2019–CE–024–AD’’ at the beginning of 

your comments. The most helpful 

comments reference a specific portion of 

the proposal, 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 proposal 

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 NPRM. 

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 NPRM 


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Federal Register / Vol. 86, No. 164 / Friday, August 27, 2021 / Proposed Rules 48087 

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 NPRM, 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 

NPRM. Submissions containing CBI 

should be sent to Mike Kiesov, Aviation 

Safety Engineer, General Aviation & 

Rotorcraft Section, International 

Validation Branch, FAA, 901 Locust, 

Room 301, Kansas City, MO 64106. Any 

commentary that the FAA receives 

which is not specifically designated as 

CBI will be placed in the public docket 

for this rulemaking. 

Background 

The Civil Aviation Authority (CAA), 

which is the aviation authority for New 

Zealand, has issued AD No. DCA/ 

750XL/37, effective April 25, 2019 

(referred to after this as ‘‘the MCAI’’), to 

correct an unsafe condition for certain 

Pacific Aerospace Limited Model 750XL 

airplanes. The MCAI states: 

DCA/750XL/37 is prompted by a review of 

the installation of the engine fuel lines and 

the electrical installation forward of the 

engine firewall on aircraft fitted with an air 

conditioner and/or a standby alternator, 

including those aircraft configured for the 

installation of an air conditioner and/or a 

standby alternator. It was found that the 

engine fuel feed lines hoses could possibly 

chafe against the adjacent electrical wiring 

and the ignition exciter, which could result 

in a fuel leak and possible fire. The [CAA] 

AD is issued to introduce the corrective 

actions in Pacific Aerospace Mandatory 

Service Bulletin (MSB) PACSB/XL/113 issue 

2, dated 8 March 2019. 

You may examine the MCAI in the 

AD docket at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0711. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Pacific Aerospace 

Mandatory Service Bulletin PACSB/XL/ 

113, Issue 2, dated March 8, 2019. The 

service information contains procedures 

for inspecting the engine fuel feed line 

hoses and the electrical wiring for 

chafing or damage, rerouting all fuel 

lines and the fuel transducer and 

pressure switch wiring (including 

installing P clips), and inspecting the 

fuel hose for chafing and replacing 

chafed fire sleeves or fuel hoses if 

necessary. 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. 

FAA’s Determination 

This product has been approved by 

the aviation authority of another 

country and is approved for operation in 

the United States. Pursuant to the FAA’s 

bilateral agreement with this State of 

Design Authority, it has notified the 

FAA of the unsafe condition described 

in the MCAI and service information 

referenced above. The FAA is issuing 

this NPRM after determining the unsafe 

condition described previously is likely 

to exist or develop on other products of 

the same type design. 

Proposed AD Requirements in This 

NPRM 

This proposed AD would require 

accomplishing the actions specified in 

the service information described 

previously, except as discussed under 

‘‘Differences Between this Proposed AD 

and the MCAI.’’ 

Differences Between This Proposed AD 

and the MCAI 

The MCAI requires an inspection at 

the next 150 hour maintenance 

inspection or within the next 50 hours 

time-in-service (TIS), whichever occurs 

later, while this proposed AD would 

require those actions within 50 hours 

TIS or at the next annual inspection 

after the effective date of this AD, 

whichever occurs later. If there is no 

chafing and damage found during the 

inspection, the MCAI requires certain 

follow-on actions at the next 300 hour 

maintenance inspection or within the 

next 50 hours TIS, whichever is later. 

This proposed AD would require those 

actions within 50 hours TIS or at the 

next annual inspection, whichever 

occurs later, because there is no 

regulatory requirement for operators in 

the U.S. to have 150-hour or 300-hour 

maintenance inspections. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 23 

airplanes of U.S. registry. The FAA also 

estimates that it would take about 5 

work-hours per airplane and require 

parts costing $20 per airplane to comply 

with the inspection and re-routing that 

would be required by this proposed AD. 

The average labor rate is $85 per workhour. 

Based on these figures, the FAA 

estimates the inspection and re-routing 

cost of this proposed AD on U.S. 

operators to be $10,235, or $445 per 

airplane. 

The FAA has included all known 

costs in its cost estimate. According to 

the manufacturer, however, some of the 

costs of this proposed AD may be 

covered under warranty, thereby 

reducing the cost impact on affected 

operators. 

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 

The FAA 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 

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 this proposed regulation: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Would not affect intrastate 

aviation in Alaska, and 

(3) Would 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: 


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48088 Federal Register / Vol. 86, No. 164 / Friday, August 27, 2021 / Proposed Rules 

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: 

Pacific Aerospace Limited: Docket No. FAA– 

2021–0711; Project Identifier 2019–CE– 

024–AD. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by October 12, 

2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Pacific Aerospace 

Limited Model 750XL airplanes, serial 

numbers 101 through 215 inclusive, 220, 

8001, and 8002, certificated in any category, 

that are fitted with an air conditioner and/or 

a standby alternator, including airplanes 

configured for the installation of an air 

conditioner and/or a standby alternator, as 

shown in Figure 1 of Part A in Pacific 

Aerospace Mandatory Service Bulletin 

PACSB/XL/113, Issue 2, dated March 8, 2019 

(MSB PACSB/XL/113, Issue 2). 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 2820, Aircraft Fuel Distribution, and 

2497, Electrical Power System Wiring. 

(e) Unsafe Condition 

This AD was prompted by mandatory 

continuing airworthiness information (MCAI) 

originated by an aviation authority of another 

country to identify and address an unsafe 

condition on an aviation product. The MCAI 

describes the unsafe condition as chafing of 

the engine fuel feed line hoses. The FAA is 

issuing this AD to prevent chafing of the 

engine fuel feed line hoses with electrical 

wiring and the ignition exciter located 

forward of the engine firewall. The unsafe 

condition, if not addressed, could result in a 

fuel leak and fire. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Within 50 hours time-in-service (TIS) or at 

the next annual inspection after the effective 

date of this AD, whichever occurs later, 

inspect the engine fuel feed line hoses and 

the electrical wiring for chafing and damage 

in accordance with the Accomplishment 

Instructions, Part A steps 3) and 4), in MSB 

PACSB/XL/113, Issue 2. 

(1) If there is any chafing or damage that 

penetrates the orange outer covering of the 

fuel line fire sleeve or if there is any chafed 

or damaged electrical wiring, before further 

flight, inspect the fuel hose for chafing, 

replace any chafed fire sleeve or fuel hose, 

and reroute all fuel lines in accordance with 

the Accomplishment Instructions, Part B, in 

MSB PACSB/XL/113, Issue 2. 

(2) If there are no chafed or damaged 

engine fuel feed line hoses and no chafed or 

damaged electrical wiring, within 50 hours 

TIS or at the next annual inspection, 

whichever occurs later, reroute all fuel lines 

in accordance with the Accomplishment 

Instructions, Part B, in MSB PACSB/XL/113, 

Issue 2. 

(h) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, 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 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 or email: 9- 

AVS-AIR-730-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. 

(i) Related Information 

(1) For more information about this AD, 

contact Mike Kiesov, Aviation Safety 

Engineer, General Aviation & Rotorcraft 

Section, International Validation Branch, 

FAA, 901 Locust, Room 301, Kansas City, 

MO 64106; phone: (816) 329–4144; fax: (816) 

329–4090; email: mike.kiesov@faa.gov. 

(2) Refer to Civil Aviation Authority (CAA) 

of New Zealand AD DCA/750XL/37, effective 

April 25, 2019, for more information. You 

may examine the CAA AD in the AD docket 

at https://www.regulations.gov by searching 

for and locating it in Docket No. FAA–2021– 

0711. 

(3) For service information identified in 

this AD, contact the CAA of New Zealand, 

Level 15, Asteron Centre, 55 Featherston 

Street, Wellington 6011; phone: + 64 4 560 

9400; fax: + 64 4 569 2024; email: info@

caa.govt.nz. You may view this service 

information at the Airworthiness Products 

Section, Operational Safety Branch, FAA, 

901 Locust, Kansas City, MO 64106. For 

information on the availability of this 

material at the FAA, call (816) 329–4148. 

Issued on August 23, 2021. 

Gaetano A. Sciortino, 

Deputy Director for Strategic Initiatives, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–18444 Filed 8–26–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2021–0674; Airspace 

Docket No. 21–ASW–14] 

RIN 2120–AA66 

Proposed Amendment Class D and 

Class E Airspace; Ardmore, OK 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This action proposes to 

amend the Class D and Class E airspace 

at Ardmore, OK. The FAA is proposing 

this action as the result of airspace 

reviews due to the decommissioning of 

the Arbuckle non-directional beacon 

(NDB). The geographic coordinates of 

the airport would also be updated to 

coincide with the FAA’s aeronautical 

database. 

DATES: Comments must be received on 

or before October 12, 2021. 

ADDRESSES: Send comments on this 

proposal to the U.S. Department of 

Transportation, Docket Operations, 

West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590; telephone (202) 

366–9826, or (800) 647–5527. You must 

identify FAA Docket No. FAA–2021– 

0674/Airspace Docket No. 21–ASW–14, 

at the beginning of your comments. You 

may also submit comments through the 

internet at https://www.regulations.gov. 

You may review the public docket 

containing the proposal, any comments 

received, and any final disposition in 

person in the Dockets Office between 

9:00 a.m. and 5:00 p.m., Monday 

through Friday, except federal holidays. 

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: 

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 


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