10736 Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations 

(4) For Airbus SAS service information, 

contact Airbus SAS, Airworthiness Office— 

EIAS, Rond-Point Emile Dewoitine No: 2, 

31700 Blagnac Cedex, France; telephone +33 

5 61 93 36 96; fax +33 5 61 93 44 51; email 

account.airworth-eas@airbus.com; internet 

https://www.airbus.com. 

(5) You may view this material 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. This material may be found 

in the AD docket on the internet at https:// 

www.regulations.gov by searching for and 

locating Docket No. FAA–2020–0900. 

(6) You may view this material 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 January 14, 2021. 

Ross Landes, 

Deputy Director for Regulatory Operations, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–03569 Filed 2–22–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–0885; Project 

Identifier MCAI–2020–00997–A; Amendment 

39–21424; AD 2021–04–03] 

RIN 2120–AA64 

Airworthiness Directives; Pilatus 

Aircraft Ltd. Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

Pilatus Aircraft Ltd. (Pilatus) Model PC– 

24 airplanes. 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 

improperly manufactured cockpit and 

cabin evaporator filters installed during 

production on some PC–24 airplanes. 

The FAA is issuing this AD to address 

the unsafe condition on these products. 

DATES: This AD is effective March 30, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of March 30, 2021. 

ADDRESSES: For service information 

identified in this final rule, contact 

Pilatus Aircraft Ltd., CH–6371 Stans, 

Switzerland; phone: +41 848 24 7 365; 

email: techsupport.ch@pilatusaircraft.com; website: https://

www.pilatus-aircraft.com/. You may 

view this service information at the 

FAA, Airworthiness Products Section, 

Operational Safety Branch, 901 Locust, 

Kansas City, Missouri 64106. For 

information on the availability of this 

material at the FAA, call (816) 329– 

4148. It is also available at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2020– 

0885. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2020–0885; 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: 

Doug Rudolph, Aviation Safety 

Engineer, General Aviation & Rotorcraft 

Section, International Validation 

Branch, FAA, 901 Locust, Room 301, 

Kansas City, Missouri 64106; phone: 

(816) 329–4059; fax: (816) 329–4090; 

email: doug.rudolph@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 Pilatus Model PC–24 airplanes 

with certain part-numbered evaporator 

filter assemblies installed. The NPRM 

published in the Federal Register on 

November 23, 2020 (85 FR 74627). The 

NPRM was prompted by MCAI 

originated by the European Union 

Aviation Safety Agency (EASA), which 

is the Technical Agent for the Member 

States of the European Union. EASA has 

issued EASA AD No. 2020–0160, dated 

July 16, 2020 (referred to after this as 

‘‘the MCAI’’), to address the unsafe 

condition on Pilatus Model PC–24 

airplanes. The MCAI states: 

An occurrence was reported where, during 

production, cockpit and cabin evaporator 

filters were installed on some PC–24 

aeroplanes, which were not the proper parts 

for the affected configuration. 

This condition, if not corrected, could 

degrade the fire retardant properties of the 

filters, possibly resulting in an increase in 

smoke in the cockpit/cabin in case of 

electrical heater over-temperature. 

To address this potential unsafe condition, 

Pilatus issued the [service bulletin] SB to 

provide replacement instructions. 

For the reason described above, this AD 

requires replacement of affected parts with 

serviceable parts, as defined in this [EASA] 

AD, and prohibits (re) installation of affected 

parts. 

Due to a quality escape, the fire 

retardant used in the original filters 

installed in production is not sufficient 

for the conditions in this configuration, 

which is close to the heater and 

blowers. 

The MCAI can be found in the AD 

docket at https://www.regulations.gov 

by searching for and locating Docket No. 

FAA–2020–0885. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received no comments on 

the NPRM or on the determination of 

the costs. 

Conclusion 

The FAA reviewed the relevant data 

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 Under 1 

CFR Part 51 

The FAA reviewed Pilatus PC–24 

Service Bulletin No. 21–006, dated 

April 3, 2020. This service information 

specifies procedures replace the cockpit 

and cabin evaporator filters with new 

filters contained in a modification kit. 

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. 

Differences Between This AD and the 

MCAI 

This AD applies to airplanes with a 

defective filter installed, whereas the 

EASA AD applies to airplanes that do 

not have the modification kit, which 

was installed in production. This AD 

identifies the individual part numbers 

(P/Ns) of the defective filters to address 

any airplanes that may have had a 

modification kit filter replaced with a 

defective filter in the field before this 

AD becomes effective. This AD also 

applies to airplanes with a filter where 

the P/N is unknown. Pilatus advises that 

the defective filters can only be 

identified by their packing documents, 

Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations 10737 

as they do not have a permanent P/N 

marked on the actual part. The new 

filters in the modification kit do have a 

permanent marking on the frame of the 

actual part. 

Costs of Compliance 

The FAA estimates that this AD will 

affect 36 airplanes of U.S. registry. The 

FAA also estimates that it would take 

2.5 work-hours per product to comply 

with the requirements of this AD. The 

average labor rate is $85 per work-hour. 

Required parts would cost about $575 

per product, if all 4 filters would need 

to be replaced. 

Based on these figures, the FAA 

estimates the cost of this AD on U.S. 

operators to be $28,350, or $787.50 per 

product. 

The FAA has included all 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. 

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, 

(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: 

2021–04–03 Pilatus Aircraft Ltd.: 

Amendment 39–21424; Docket No. 

FAA–2020–0885; Project Identifier 

MCAI–2020–00997–A. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective March 30, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Pilatus Aircraft Ltd. 

Model PC–24 airplanes, all serial numbers, 

certificated in any category, with any of the 

following evaporator filter assemblies 

installed, or if the part number (P/N) of the 

evaporator filter assembly is unknown: 

(1) Cockpit filter assembly P/N 

959.90.20.291 (PC24EC–6068–1); 

(2) Cabin front filter assembly P/N 

959.90.20.290 (PC24EC–6287–1); 

(3) Cabin bottom filter assembly P/N 

959.90.20.288 (PC24EC–6288–1); or 

(4) Cabin top filter assembly P/N 

959.90.20.289 (PC24EC–6297–1). 

Note 1 to paragraph (c): The P/N in 

parenthesis is an alternative vendor P/N. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 2100, AIR CONDITIONING SYSTEM. 

(e) Unsafe Condition 

This AD was prompted by a reported 

occurrence where, during production, 

cockpit and cabin evaporator filters produced 

with degraded fire retardant properties were 

installed on some Model PC–24 airplanes. 

The FAA is issuing this AD to detect 

improper cockpit and cabin evaporator filters 

installed on Model PC–24 airplanes. The 

unsafe condition, if not addressed, could 

result in filters with degraded fire retardant 

properties, resulting in smoke in the cockpit 

and cabin in the event of electrical heater 

over-temperature. 

(f) Actions and Compliance 

(1) Within 4 months after the effective date 

of this AD, unless already done, remove each 

filter assembly from service and replace with 

a filter assembly as specified in table 1 to 

paragraph (f)(1) of this AD by following the 

Accomplishment Instructions, sections 3A. 

through 3C., of Pilatus PC–24 Service 

Bulletin No. 21–006, dated April 3, 2020. 

TABLE 1 TO PARAGRAPH (f)(1)—EVAPORATOR FILTER ASSEMBLIES

Item Remove filter P/N Replace with filter P/N 

Cockpit filter assembly ....................................... P/N 959.90.20.291 or PC24EC–6068–1 ......... P/N 959.90.20.303 or PC24EC–6068–5. 

Cabin front filter assembly .................................. P/N 959.90.20.290 or PC24EC–6287–1 ......... P/N 959.90.20.304 or PC24EC–6287–5. 

Cabin bottom filter assembly .............................. P/N 959.90.20.288 or PC24EC–6288–1 ......... P/N 959.90.20.305 or PC24EC–6288–5. 

Cabin top filter assembly .................................... P/N 959.90.20.289 or PC24EC–6297–1 ......... P/N 959.90.20.306 or PC24EC–6297–5. 

(2) As of the effective date of this AD, do 

not install an evaporator filter assembly with 

a P/N listed in paragraph (c) of this AD on 

any airplane. 

(g) Alternative Methods of Compliance 

(AMOCs) 

The Manager, General Aviation & 

Rotorcraft 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. Send 

information to Doug Rudolph, Aviation 

Safety Engineer, FAA, General Aviation & 

Rotorcraft Section, International Validation 

Branch, 901 Locust, Room 301, Kansas City, 

Missouri 64106; phone: (816) 329–4059; fax: 

(816) 329–4090; email: doug.rudolph@

faa.gov. 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 

Refer to European Union Aviation Safety 

Agency (EASA) AD No. 2020–0160, dated 

10738 Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations 

July 16, 2020, for more information. You may 

examine the EASA AD at https://

www.regulations.gov by searching for and 

locating Docket No. FAA–2020–0885. 

(i) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 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) Pilatus PC–24 Service Bulletin No. 21– 

006, dated April 3, 2020. 

(ii) [Reserved] 

(3) For Pilatus Aircraft Ltd. service 

information identified in this AD, contact 

Pilatus Aircraft Ltd., CH–6371 Stans, 

Switzerland; phone: +41 848 24 7 365; email: 

techsupport.ch@pilatus-aircraft.com; 

website: https://www.pilatus-aircraft.com/. 

(4) You may view this service information 

at FAA, Airworthiness Products Section, 

Operational Safety Branch, 901 Locust, 

Kansas City, Missouri 64106. For information 

on the availability of this material at the 

FAA, call (816) 329–4148. 

(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 February 1, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–03494 Filed 2–22–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–0976; Product 

Identifier 2020–NM–095–AD; Amendment 

39–21423; AD 2021–04–02] 

RIN 2120–AA64 

Airworthiness Directives; Dassault 

Aviation Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2020–04– 

22, which applied to certain Dassault 

Aviation Model FALCON 2000EX 

airplanes. AD 2020–04–22 required 

revising the existing maintenance or 

inspection program, as applicable, to 

incorporate new or more restrictive 

airworthiness limitations. This AD 

continues to require the actions in AD 

2020–04–22 and also requires revising 

the existing maintenance or inspection 

program, as applicable, to incorporate 

additional new or more restrictive 

airworthiness limitations, as specified 

in a European Union Aviation Safety 

Agency (EASA) AD, which is 

incorporated by reference. This AD was 

prompted by a determination that new 

or more restrictive airworthiness 

limitations are necessary. The FAA is 

issuing this AD to address the unsafe 

condition on these products. 

DATES: This AD is effective March 30, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of March 30, 2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain other publication listed in 

this AD as of May 4, 2020 (85 FR 17487, 

March 30, 2020). 

ADDRESSES: For EASA material 

incorporated by reference (IBR) in this 

AD, contact the EASA, KonradAdenauer-Ufer 3, 50668 Cologne, 

Germany; telephone +49 221 8999 000; 

email ADs@easa.europa.eu; internet 

www.easa.europa.eu. You may find this 

IBR material on the EASA website at 

https://ad.easa.europa.eu. For Dassault 

Aviation service information identified 

in this final rule, contact Dassault 

Falcon Jet Corporation, Teterboro 

Airport, P.O. Box 2000, South 

Hackensack, NJ 07606; telephone 201– 

440–6700; internet https://

www.dassaultfalcon.com. You may 

view this IBR material 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. 

It is also available in the AD docket on 

the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2020– 

0976. 

Examining the AD Docket 

You may examine the AD docket on 

the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2020– 

0976; 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: 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. 

SUPPLEMENTARY INFORMATION: 

Discussion 

The EASA, which is the Technical 

Agent for the Member States of the 

European Union, has issued EASA AD 

2020–0114, dated May 20, 2020 (EASA 

AD 2020–0114) (also referred to as the 

Mandatory Continuing Airworthiness 

Information, or the MCAI), to correct an 

unsafe condition all Dassault Aviation 

Model FALCON 2000EX airplanes. 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2020–04–22, 

Amendment 39–19858 (85 FR 17487, 

March 30, 2020) (AD 2020–04–22). AD 

2020–04–22 applied to certain Dassault 

Aviation Model FALCON 2000EX 

airplanes. The NPRM published in the 

Federal Register on November 3, 2020 

(85 FR 69522). The NPRM was 

prompted by a determination that new 

or more restrictive airworthiness 

limitations are necessary. The NPRM 

proposed to continue to require the 

actions in AD 2020–04–22 and also 

require revising the existing 

maintenance or inspection program, as 

applicable, to incorporate additional 

new or more restrictive airworthiness 

limitations, as specified in EASA AD 

2020–0114. 

The FAA is issuing this AD to address 

reduced structural integrity of the 

airplane. See the MCAI for additional 

background information. 

Comments 

The FAA gave the public the 

opportunity to participate in developing 

this final rule. The FAA received no 

comments on the NPRM or on the 

determination of the cost to the public. 

Conclusion 

The FAA reviewed the relevant data 

and determined that air safety and the 

public interest require adopting this 

final rule as proposed, except for minor 

editorial changes. The FAA has 

determined that these minor changes: 

• Are consistent with the intent that 

was proposed in the NPRM for 

addressing the unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM.