Federal Register / Vol. 86, No. 142 / Wednesday, July 28, 2021 / Proposed Rules 40381 

Learjet Inc.: Docket No. FAA–2021–0157; 

Project Identifier AD–2020–00483–T. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by September 

13, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Learjet Inc. Model 45 

(Learjet 40), Model 45 (Learjet 45), Model 45 

(Learjet 70), and Model 45 (Learjet 75) 

airplanes, serial numbers 45–002 through 45– 

596 and 45–2001 through 45–2146, 

certificated in any category. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 5714, Wing, Center Box. 

(e) Unsafe Condition 

This AD was prompted by reports of 

corrosion found on the upper surface of the 

lower center wing mid spar splice plate. The 

FAA is issuing this AD to detect and correct 

corrosion or deterioration of protective 

treatments on the center wing area. The 

unsafe condition, if not addressed, could 

result in failure of the wing centerline joint 

and lead to partial wing separation with 

consequent loss of control of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Applicable Service Bulletins 

Use the following service bulletins, as 

applicable to your airplane model 

configuration, to perform the actions required 

by paragraph (h) of this AD: 

(1) Bombardier Learjet 40 Service Bulletin 

40–57–06, Revision 1, dated October 26, 

2020; 

(2) Bombardier Learjet 45 Service Bulletin 

45–57–13, Revision 1, dated October 26, 

2020; 

(3) Bombardier Learjet 70 Service Bulletin 

70–57–02, Revision 1, dated October 26, 

2020; and 

(4) Bombardier Learjet 75 Service Bulletin 

75–57–01, Revision 2, dated April 19, 2021. 

(h) Wing Center Spar Inspection, Related 

Investigative Inspections, and Corrective 

Actions 

At the applicable initial compliance time 

specified in paragraph (h)(1) or (2) of this AD 

and thereafter at intervals not to exceed 8 

years, inspect the center wing area for 

corrosion and deterioration of protective 

treatments and perform all related corrective 

actions by following the Accomplishment 

Instructions, steps 3.A. and 3.B., of the 

applicable service bulletin listed in 

paragraph (g) of this AD. 

(1) For airplanes with 8 or fewer years 

since the date of issuance of the original 

airworthiness certificate or the date of 

issuance of the original export certificate of 

airworthiness, whichever date is earlier: 

Before or upon accumulating 8 years or 

within 12 months after the effective date of 

this AD, whichever occurs later; or 

(2) For airplanes that have accumulated 

more than 8 years since the date of issuance 

of the original airworthiness certificate or the 

date of issuance of the original export 

certificate of airworthiness, whichever date is 

earlier: Within 12 months after the effective 

date of this AD. 

(i) Service Information Exception 

Where Bombardier Learjet 40 Service 

Bulletin 40–57–06, Revision 1, dated October 

26, 2020, Bombardier Learjet 45 Service 

Bulletin 45–57–13, Revision 1, dated October 

26, 2020, Bombardier Learjet 70 Service 

Bulletin 70–57–02, Revision 1, dated October 

26, 2020, and Bombardier Learjet 75 Service 

Bulletin 75–57–01, Revision 2, dated April 

19, 2021, specify contacting Learjet Inc. for 

appropriate action: Before further flight, 

repair using a method approved in 

accordance with the procedures specified in 

paragraph (l) of this AD. 

(j) Reporting Requirement 

Within 30 days after completing the initial 

inspection required by paragraph (h) of this 

AD or within 30 days after the effective date 

of this AD, whichever occurs later, submit a 

report of the findings (both positive and 

negative) of the inspection to: Wichita-COS@

faa.gov; or Ann Johnson, Wichita ACO 

Branch, 1801 Airport Road, Wichita, KS 

67209. This reporting requirement is limited 

to the initial inspection results only. The 

report must include: The name of the owner; 

the address of the owner; the name of the 

organization doing the actions required by 

this AD; the date the inspection was 

completed; the name of the person 

submitting the report; the address, telephone 

number, and email of the person submitting 

the report; the airplane serial number; the 

date of issuance of the original airworthiness 

certificate, or the date of issuance of the 

original export certificate of airworthiness 

(whichever date is earlier); whether 

protective treatments are deteriorated, and if 

so, the location of deteriorated areas; whether 

corrosion was detected, and if so, the 

location of corrosion; and a list of parts 

replaced if the level of corrosion required 

replacement of parts. 

(k) Credit for Previous Actions 

You may take credit for the initial wing 

spar inspection required by the introductory 

text to paragraph (h) of this AD if you 

performed the visual inspection before the 

effective date of this AD using Bombardier 

Learjet 40 Service Bulletin 40–57–06, Basic 

Issue, dated February 25, 2019; Bombardier 

Learjet 45 Service Bulletin 45–57–13, Basic 

Issue, dated February 25, 2019; Bombardier 

Learjet 70 Service Bulletin 70–57–02, Basic 

Issue, dated February 25, 2019; Bombardier 

Learjet 75 Service Bulletin 75–57–01, Basic 

Issue, dated February 25, 2019; or 

Bombardier Learjet 75 Service Bulletin 75– 

57–01, Revision 1, dated October 26, 2020. 

(1) To take credit for the initial inspection, 

you must comply with paragraph (j) of this 

AD within 30 days after the effective date of 

this AD. 

(2) You cannot take credit for the recurring 

inspections, only the initial inspection. 

(l) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Wichita 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. 

(3) An AMOC that provides an acceptable 

level of safety may be used for any repair, 

modification, or alteration required by this 

AD if it is approved by a Learjet Inc. 

Designated Engineering Representative, or a 

Unit Member of the Learjet Organization 

Designation Authorization, that has been 

authorized by the Manager, Wichita ACO 

Branch, to make those findings. To be 

approved, the repair, modification, or 

alteration method must meet the certification 

basis of the airplane, and the approval must 

specifically refer to this AD. 

(m) Related Information 

(1) For more information about this AD, 

contact Tara Shawn, Aviation Safety 

Engineer, Wichita ACO Branch, FAA, 1801 

Airport Road, Wichita, KS 67209; phone: 

(316) 946–4141; fax: (316) 946–4107; email: 

tara.shawn@faa.gov. 

(2) For service information identified in 

this AD, contact Learjet Inc., One Learjet 

Way, Wichita, KS 67209; phone: (316) 946– 

2000; email: ac.ict@aero.bombardier.com; 

website: businessaircraft.bombardier.com/ 

en/aircraft/Learjet.html. You may view this 

referenced 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. 

Issued on July 21, 2021. 

Gaetano A. Sciortino, 

Deputy Director for Strategic Initiatives, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–15953 Filed 7–27–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0604; Project 

Identifier 2019–CE–007–AD] 

RIN 2120–AA64 

Airworthiness Directives; Pacific 

Aerospace Limited Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 


khammond on DSKJM1Z7X2PROD with PROPOSALS
40382 Federal Register / Vol. 86, No. 142 / Wednesday, July 28, 2021 / Proposed Rules 

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 identifies 

the unsafe condition as insufficient 

clearance between the engine mount, 

the Beta control rod, and the interturbine temperature (ITT) sensing probe 

that could lead to chafing damage. This 

proposed AD would require inspecting 

the engine mount, the temperature 

probe, and the reversing cable for 

damage, and taking any necessary 

corrective actions. 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 September 13, 

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–2021–0604; 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, 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, 

FAA, International Validation Branch, 

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–2021–0604; Project Identifier 

2019–CE–007–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 

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, FAA, International 

Validation Branch, 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 DCA/750XL/35, 

effective date February 7, 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/35 is prompted by a review of 

the engine installation procedures, which 

identified that the clearance between the 

engine mount, the Beta control rod and the 

inter-turbine temperature (ITT) sensing probe 

could be insufficient and result in chafing 

damage. The [CAA] AD is issued to introduce 

the instructions in Pacific Aerospace 

Mandatory Service Bulletin (MSB) PACSB/ 

XL/102 issue 2, dated 5 November 2018. 

You may examine the MCAI in the 

AD docket at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0604. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Pacific Aerospace 

Limited Mandatory Service Bulletin 

PACSB/XL/102, Issue 2, dated 

November 5, 2018. This service 

information specifies procedures for 

removing support clamps if installed by 

following the prior version of the 

service bulletin; inspecting the engine 

mount, the temperature probe, and the 

reversing cable for signs of chafing or 

damage; installing anti-chafing blade 

tape onto the engine mount tube; and 

obtaining further guidance for corrective 

actions. 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. 

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 in the service 

information described above, except as 

discussed under Differences Between 


khammond on DSKJM1Z7X2PROD with PROPOSALS
Federal Register / Vol. 86, No. 142 / Wednesday, July 28, 2021 / Proposed Rules 40383 

this Proposed AD and the Service 

Information. 

Differences Between This Proposed AD 

and the Service Information 

Where the service information states 

to contact Pacific Aerospace Limited if 

chafing or any damage is present on an 

engine mount, temperature probe, or 

reversing cable, this proposed AD 

would require contacting the CAA of 

New Zealand. 

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 2 work-hours per airplane to 

comply with the inspection and install 

anti-chafing blade tape. The average 

labor rate is $85 per work-hour and 

required parts would cost about $10 per 

product for an estimated cost of $4,140 

on U.S. operators, or $180 per airplane. 

The damage found during the 

proposed inspection may vary from 

airplane to airplane. The FAA has no 

way of knowing how much damage each 

airplane may have or the cost to repair 

the damage for each airplane. 

Contacting the CAA of New Zealand, 

if required, would take about 1 workhour for an estimated cost of $85 per 

airplane. 

The FAA has included all known 

costs in this cost estimate. According to 

the manufacturer, however, some of the 

costs of this AD may be covered under 

warranty, thereby reducing the cost 

impact on affected operators. 

Paperwork Reduction Act 

A federal agency may not conduct or 

sponsor, and a person is not required to 

respond to, nor shall a person be subject 

to a penalty for failure to comply with 

a collection of information subject to the 

requirements of the Paperwork 

Reduction Act unless that collection of 

information displays a current valid 

OMB Control Number. The OMB 

Control Number for this information 

collection is 2120–0056. Public 

reporting for this collection of 

information is estimated to take 

approximately 1 hour per response, 

including the time for reviewing 

instructions, searching existing data 

sources, gathering and maintaining the 

data needed, and completing and 

reviewing the collection of information. 

All responses to this collection of 

information are mandatory. Send 

comments regarding this burden 

estimate or any other aspect of this 

collection of information, including 

suggestions for reducing this burden, to: 

Information Collection Clearance 

Officer, Federal Aviation 

Administration, 10101 Hillwood 

Parkway, Fort Worth, TX 76177–1524. 

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: 

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– 

2021–0604; Project Identifier 2019–CE– 

007–AD. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by September 

13, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Pacific Aerospace 

Limited Model 750XL airplanes, serial 

numbers 101 through 215, 220, 8001, and 

8002, certificated in any category. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7100, Power Plant System. 

(e) Unsafe Condition 

This 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 

identifies the unsafe condition as insufficient 

clearance between the engine mount, the 

Beta control rod, and the inter-turbine 

temperature (ITT) sensing probe that could 

lead to chafing damage. The FAA is issuing 

this AD to prevent damage to the engine 

mount, temperature probe, and the reversing 

cable. The unsafe condition, if not addressed, 

could result in chafing damage to the ITT 

system and binding of the Beta control rod. 

(f) Actions and Compliance 

(1) Unless already done, within 165 hours 

time-in-service after the effective date of this 

AD, inspect the engine mount, the 

temperature probe, and the reversing cable 

for damage, and, before further flight, take all 

necessary corrective actions and install antichafing blade tape onto the engine mount 

tube by following the Accomplishment 

Instructions in Pacific Aerospace Limited 

Mandatory Service Bulletin PACSB/XL/102, 

Issue 2, dated November 5, 2018. 

(2) Where the service information states to 

contact Pacific Aerospace Limited if chafing 

or any damage is present on an engine 

mount, temperature probe, or reversing cable, 

this AD requires instead that you contact the 

Civil Aviation Authority (CAA) of New 

Zealand at the contact information in 

paragraph (h)(3) of this AD. 

(g) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, International Validation 

Branch, 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 


khammond on DSKJM1Z7X2PROD with PROPOSALS
40384 Federal Register / Vol. 86, No. 142 / Wednesday, July 28, 2021 / Proposed Rules 

or by email at: 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. 

(h) Related Information 

(1) For more information about this AD, 

contact Mike Kiesov, Aviation Safety 

Engineer, General Aviation & Rotorcraft 

Section, FAA, International Validation 

Branch, 901 Locust, Room 301, Kansas City, 

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

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

(2) Refer to CAA of New Zealand AD DCA/ 

750XL/35, effective date February 7, 2019, for 

more information. You may examine the 

CAA AD in the AD docket at https://

www.regulations.gov by searching for and 

locating Docket No. FAA–2021–0604. 

(3) For service information identified in 

this AD, 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 

referenced 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. 

Issued on July 21, 2021. 

Gaetano A. Sciortino, 

Deputy Director for Strategic Initiatives, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–15951 Filed 7–27–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0603; Project 

Identifier 2019–CE–006–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 damage 

in the port wing skin caused by the fuel 

system finger filters. This proposed AD 

would require inspecting the wing 

internal skin for chafing and taking any 

necessary corrective actions. 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 September 13, 

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 AD, 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–2021–0603; 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. Comments will be 

available in the AD docket shortly after 

receipt. 

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–2021–0603; Project Identifier 

2019–CE–006–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 

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/34, effective date February 7, 

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/34 is prompted by a report of 

finding chafing damage in the port wing skin 

caused by the fuel finger filters. The [CAA] 

AD is issued to introduce inspection and 

repair requirements with the issue of Pacific 

Aerospace Mandatory Service Bulletin (MSB) 


khammond on DSKJM1Z7X2PROD with PROPOSALS