Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes, 16509-16511 [2021-06514]

Download as PDF Federal Register / Vol. 86, No. 59 / Tuesday, March 30, 2021 / Rules and Regulations (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Actions (1) Within 24 months after the effective date of this AD, inspect the right butt line 6 floor beam inboard support links at fuselage stations (FS) 499, 531, and 569.5 for corrosion by following the Accomplishment Instructions, steps A through M, of Gulfstream GV Customer Bulletin No. 231, Revision A, dated July 30, 2019 (Gulfstream CB 231A). Where Gulfstream CB 231A specifies contacting Gulfstream for procedures if any corrosion is found, you must replace the support link in accordance with a method approved by the Manager, Atlanta ACO Branch, FAA, before further flight. For a method to be approved by the Manager, Atlanta ACO Branch, as required by this paragraph, the Manager’s approval letter must specifically refer to this AD. (2) Within 24 months after the effective date of this AD, revise the airworthiness limitations section of your maintenance manual or inspection program to incorporate the airworthiness limitations specified in Table 13: Fuselage Inspection Table in Section 05–10–10 of Chapter 5—Time Limits/Maintenance Checks of Gulfstream GV Aircraft Maintenance Manual, Revision 51, dated February 28, 2020. Thereafter, except as provided in paragraph (h) of this AD, no alternative inspection intervals may be approved for the fuselage floor beam and wing link FS 465–FS 576. jbell on DSKJLSW7X2PROD with RULES (h) Alternative Methods of Compliance (AMOCs) (1) The Manager, Atlanta 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 paragraph (i)(1) of this AD. (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) For service information that contains steps that are labeled as Required for Compliance (RC), the following provisions apply. (i) The steps labeled as RC, including substeps under an RC step and any figures identified in an RC step, must be done to comply with the AD. An AMOC is required for any deviations to RC steps, including substeps and identified figures. (ii) Steps not labeled as RC may be deviated from using accepted methods in accordance with the operator’s maintenance or inspection program without obtaining approval of an AMOC, provided the RC steps, including substeps and identified figures, can still be done as specified, and the airplane can be put back in an airworthy condition. VerDate Sep<11>2014 15:52 Mar 29, 2021 Jkt 253001 (i) Related Information For more information about this AD, contact Ronald Wissing, Aviation Safety Engineer, Atlanta ACO Branch, FAA, 1701 Columbia Avenue, College Park, GA 30337; phone: (404) 474–5552; fax: (404) 474–5606; email: ronald.wissing@faa.gov. (j) 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) Gulfstream GV Customer Bulletin Number 231, Revision A, dated July 30, 2019. (ii) Table 13: Fuselage Inspection Table in Section 05–10–10 of Chapter 5—Time Limits/Maintenance Checks of Gulfstream GV Aircraft Maintenance Manual, Revision 51, dated February 28, 2020. (3) For Gulfstream Aerospace Corporation service information identified in this AD, contact Gulfstream Aerospace Corporation, Technical Publications Dept., P.O. Box 2206, Savannah, GA 31402–2206; phone: (800) 810–4853; fax: (912) 965–3520; email: pubs@ gulfstream.com; website: https:// www.gulfstream.com/en/customer-support/. (4) You may view this service information at 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. (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 March 5, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–06500 Filed 3–29–21; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2020–0917; Project Identifier MCAI–2020–00606–A; Amendment 39–21467; AD 2021–06–01] RIN 2120–AA64 Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: The FAA is adopting a new airworthiness directive (AD) for all SUMMARY: PO 00000 Frm 00003 Fmt 4700 Sfmt 4700 16509 Pilatus Aircraft Ltd. (Pilatus) Model PC– 24 airplanes. This AD was prompted by a report that electronic circuit breakers (ECBs) were found in a locked state after maintenance, but before flight. This AD requires revising the airplane flight manual (AFM) to incorporate a procedure to check for the ECB status. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective May 4, 2021. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of May 4, 2021. ADDRESSES: For service information identified in this final rule, contact Pilatus Aircraft Ltd., Customer Technical Support (MCC), P.O. Box 992, CH–6371 Stans, Switzerland; phone: +41 (0)41 619 67 74; fax: +41 (0)41 619 67 73; 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 Street, Kansas City, MO. 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– 0917. Examining the AD Docket You may examine the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA–2020–0917; 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, the mandatory continuing airworthiness information (MCAI), 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, FAA, General Aviation & Rotorcraft Section, International Validation Branch, 901 Locust Street, Room 301, Kansas City, MO 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 all Pilatus Model PC–24 airplanes. The NPRM published in the E:\FR\FM\30MRR1.SGM 30MRR1 16510 Federal Register / Vol. 86, No. 59 / Tuesday, March 30, 2021 / Rules and Regulations Federal Register on October 23, 2020 (85 FR 67465). 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 Community. EASA has issued EASA AD No. 2020–0096, dated April 29, 2020 (referred to after this as ‘‘the MCAI’’), to correct an unsafe condition for Pilatus Model PC–24 airplanes. The MCAI states: An occurrence was reported where, before take-off after maintenance of a PC–24 aeroplane, some electronic circuit breakers (ECB) were found in a ‘‘LOCKED’’ state. This condition, if not corrected, could lead to a loss of power supply to equipment, without indication to the flight crew before take-off. To address this potential unsafe condition, Pilatus issued the AFM [temporary revision] TR, as defined in this [EASA] AD, to provide operators with the necessary preflight check instructions. For the reason described above, this [EASA] AD requires amendment of the AFM. You may examine the MCAI in the AD docket at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020– 0917. In the NPRM, the FAA proposed to require revising the AFM to incorporate a procedure to check for the ECB status. The FAA is issuing this AD to address the unsafe condition on these products. Discussion of the Final Airworthiness Directive Comments The FAA received a comment from Pilatus. The following presents the comment received on the NPRM and the FAA’s response to the comment. Request To Refer to Revised Service Information Pilatus stated that the temporary revision referenced in the NPRM has been incorporated into page 4–3–9, dated October 7, 2020, of the ‘‘Before Engine Start’’ procedure (4–PF–04), in Section 4 of Pilatus PC–24 Airplane Flight Manual, Report No. 02371, Issue 003 Revision 03, dated October 8, 2020 (AFM Revision 03). Pilatus requested that the FAA change the proposed AD to require using AFM Revision 03 instead of the temporary revision. The FAA partially agrees. This AD requires adding the language in the temporary revision. However, the FAA has added wording to paragraph (g) of this AD to still allow compliance if later revisions of the AFM contain language identical to that in the temporary revision, such as the page referenced by the commenter. Conclusion This product has been approved by the aviation authority of another country and is approved for operations in the United States. Pursuant to our bilateral agreement with this state of Design Authority, it has notified the FAA of the unsafe condition described in the MCAI and service information reference above. The FAA reviewed the relevant data, considered the comment 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. Except for the changes described previously, this AD is adopted as proposed in the NPRM. Related Service Information Under 1 CFR Part 51 The FAA reviewed [Pilatus] PC–24 Temporary Revision 02371–016 to PC– 24 Airplane Flight Manual, PC24–A– A15–99–0031–00A–0030A–A, dated November 1, 2019. The service information contains a step to be added to the pilot preflight procedures to check the ECB status. 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. Costs of Compliance The FAA estimates that this AD affects 30 airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD: ESTIMATED COSTS Action Labor cost Parts cost Cost per product Cost on U.S. operators Revise the AFM .............................................. 1 work-hour × $85 per hour = $85 ................. $0 $85 $2,550 jbell on DSKJLSW7X2PROD with RULES 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 VerDate Sep<11>2014 16:21 Mar 29, 2021 Jkt 253001 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 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. PO 00000 Frm 00004 Fmt 4700 Sfmt 4700 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: ■ 2021–06–01 Pilatus Aircraft Ltd.: Amendment 39–21467; Docket No. E:\FR\FM\30MRR1.SGM 30MRR1 Federal Register / Vol. 86, No. 59 / Tuesday, March 30, 2021 / Rules and Regulations FAA–2020–0917; Project Identifier MCAI–2020–00606–A. (a) Effective Date This airworthiness directive (AD) is effective May 4, 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. (d) Subject Air Transport Association (ATA) of America Code 24, Electrical Power. (e) Reason This AD was prompted by a report that electronic circuit breakers (ECBs) were found in a locked state after maintenance, but before flight. ECBs were turned off prior to maintenance and then not reset properly after maintenance was complete. The FAA is issuing this AD to prevent improperly set ECBs, which if not detected, could lead to loss of power supply to equipment without indication to the flightcrew before take-off. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Revision of the Airplane Flight Manual (AFM) Within 30 days after the effective date of this AD, revise Section 4 of the existing AFM for your airplane by replacing the information as specified in [Pilatus] PC–24 Temporary Revision 02371–016 to PC–24 Airplane Flight Manual, PC24–A–A15–99– 0031–00A–0030A–A, dated November 1, 2019 (PC–24 TR 02371–016). Using a different document with information identical to that contained in PC–24 TR 02371–016 is acceptable for compliance with the requirements of this paragraph. (h) Alternative Methods of Compliance (AMOCs) 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. Send information to: Doug Rudolph, Aviation Safety Engineer, FAA, General Aviation & Rotorcraft Section, International Validation Branch, 901 Locust Street, Room 301, Kansas City, MO 64106; phone: (816) 329–4059; fax: (816) 329–4090; email: doug.rudolph@ faa.gov. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. 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. DEPARTMENT OF ENERGY (i) Related Information (1) For more information about this AD, contact Doug Rudolph, Aviation Safety Engineer, FAA, General Aviation & Rotorcraft Section, International Validation Branch, 901 Locust Street, Room 301, Kansas City, MO 64106; phone: (816) 329–4059; fax: (816) 329–4090; email: doug.rudolph@faa.gov. (2) Refer to European Union Aviation Safety Agency (EASA) AD No. 2020–0096, dated April 29, 2020, for more information. You may examine the EASA AD in the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA– 2020–0917. 18 CFR Part 35 (j) 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 Temporary Revision 02371–016 to PC–24 Airplane Flight Manual, PC24–A–A15–99–0031–00A–0030A–A, dated November 1, 2019. (ii) [Reserved] (3) For Pilatus service information identified in this AD, contact Pilatus Aircraft Ltd., Customer Technical Support (MCC), P.O. Box 992, CH–6371 Stans, Switzerland; phone: +41 (0)41 619 67 74; fax: +41 (0)41 619 67 73; email: techsupport.ch@pilatusaircraft.com; website: https://www.pilatusaircraft.com. (4) You may view this service information at FAA, Airworthiness Products Section, Operational Safety Branch, 901 Locust Street, Kansas City, MO. For information on the availability of this material at the FAA, call 7(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 March 1, 2021. Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–06514 Filed 3–29–21; 8:45 am] 16511 Federal Energy Regulatory Commission [Docket No. RM18–9–002; Order No. 2222– A] Participation of Distributed Energy Resource Aggregations in Markets Operated by Regional Transmission Organizations and Independent System Operators Federal Energy Regulatory Commission, Department of Energy. AGENCY: ACTION: Final rule. In this order, the Federal Energy Regulatory Commission (Commission) addresses arguments raised on rehearing, sets aside in part, and clarifies in part its final rule amending its regulations to remove barriers to the participation of distributed energy resource aggregations in the capacity, energy, and ancillary service markets operated by Regional Transmission Organizations and Independent System Operators (RTOs/ ISOs). SUMMARY: DATES: This rule is effective June 1, 2021. FOR FURTHER INFORMATION CONTACT: David Kathan (Technical Information), Office of Energy Policy and Innovation, Federal Energy Regulatory Commission, 888 First Street NE, Washington, DC 20426, (202) 502– 6404 Nicole Businelli (Technical Information), Office of Energy Market Regulation, Federal Energy Regulatory Commission, 888 First Street NE, Washington, DC 20426, (202) 502– 8253 Karin Herzfeld (Legal Information), Office of General Counsel—Energy Markets, Federal Energy Regulatory Commission, 888 First Street NE, Washington, DC 20426, (202) 502– 8459 SUPPLEMENTARY INFORMATION: Table of Contents BILLING CODE 4910–13–P jbell on DSKJLSW7X2PROD with RULES Paragraph Nos. I. Introduction ........................................................................................................................................................................................... II. Discussion ............................................................................................................................................................................................ A. Commission Jurisdiction .............................................................................................................................................................. 1. Exclusive Jurisdiction ............................................................................................................................................................ a. Request for Clarification or Rehearing ........................................................................................................................... b. Commission Determination ............................................................................................................................................ VerDate Sep<11>2014 15:52 Mar 29, 2021 Jkt 253001 PO 00000 Frm 00005 Fmt 4700 Sfmt 4700 E:\FR\FM\30MRR1.SGM 30MRR1 2 7 7 7 9 11

Agencies

[Federal Register Volume 86, Number 59 (Tuesday, March 30, 2021)]
[Rules and Regulations]
[Pages 16509-16511]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-06514]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-0917; Project Identifier MCAI-2020-00606-A; 
Amendment 39-21467; AD 2021-06-01]
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 all 
Pilatus Aircraft Ltd. (Pilatus) Model PC-24 airplanes. This AD was 
prompted by a report that electronic circuit breakers (ECBs) were found 
in a locked state after maintenance, but before flight. This AD 
requires revising the airplane flight manual (AFM) to incorporate a 
procedure to check for the ECB status. The FAA is issuing this AD to 
address the unsafe condition on these products.

DATES: This AD is effective May 4, 2021.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of May 4, 2021.

ADDRESSES: For service information identified in this final rule, 
contact Pilatus Aircraft Ltd., Customer Technical Support (MCC), P.O. 
Box 992, CH-6371 Stans, Switzerland; phone: +41 (0)41 619 67 74; fax: 
+41 (0)41 619 67 73; email: aircraft.com">[email protected]aircraft.com; 
website: https://www.pilatus-aircraft.com/. You may view this service 
information at the FAA, Airworthiness Products Section, Operational 
Safety Branch, 901 Locust Street, Kansas City, MO. 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-2020-0917.

Examining the AD Docket

    You may examine the AD docket at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2020-0917; 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, the 
mandatory continuing airworthiness information (MCAI), 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, FAA, General Aviation & Rotorcraft Section, International 
Validation Branch, 901 Locust Street, Room 301, Kansas City, MO 64106; 
phone: (816) 329-4059; fax: (816) 329-4090; email: 
[email protected].

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 Pilatus Model PC-24 
airplanes. The NPRM published in the

[[Page 16510]]

Federal Register on October 23, 2020 (85 FR 67465). 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 Community. EASA has issued EASA AD No. 2020-0096, dated 
April 29, 2020 (referred to after this as ``the MCAI''), to correct an 
unsafe condition for Pilatus Model PC-24 airplanes. The MCAI states:

    An occurrence was reported where, before take-off after 
maintenance of a PC-24 aeroplane, some electronic circuit breakers 
(ECB) were found in a ``LOCKED'' state.
    This condition, if not corrected, could lead to a loss of power 
supply to equipment, without indication to the flight crew before 
take-off.
    To address this potential unsafe condition, Pilatus issued the 
AFM [temporary revision] TR, as defined in this [EASA] AD, to 
provide operators with the necessary preflight check instructions.
    For the reason described above, this [EASA] AD requires 
amendment of the AFM.

    You may examine the MCAI in the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA-2020-
0917.
    In the NPRM, the FAA proposed to require revising the AFM to 
incorporate a procedure to check for the ECB status. The FAA is issuing 
this AD to address the unsafe condition on these products.

Discussion of the Final Airworthiness Directive Comments

    The FAA received a comment from Pilatus. The following presents the 
comment received on the NPRM and the FAA's response to the comment.

Request To Refer to Revised Service Information

    Pilatus stated that the temporary revision referenced in the NPRM 
has been incorporated into page 4-3-9, dated October 7, 2020, of the 
``Before Engine Start'' procedure (4-PF-04), in Section 4 of Pilatus 
PC-24 Airplane Flight Manual, Report No. 02371, Issue 003 Revision 03, 
dated October 8, 2020 (AFM Revision 03). Pilatus requested that the FAA 
change the proposed AD to require using AFM Revision 03 instead of the 
temporary revision.
    The FAA partially agrees. This AD requires adding the language in 
the temporary revision. However, the FAA has added wording to paragraph 
(g) of this AD to still allow compliance if later revisions of the AFM 
contain language identical to that in the temporary revision, such as 
the page referenced by the commenter.

Conclusion

    This product has been approved by the aviation authority of another 
country and is approved for operations in the United States. Pursuant 
to our bilateral agreement with this state of Design Authority, it has 
notified the FAA of the unsafe condition described in the MCAI and 
service information reference above. The FAA reviewed the relevant 
data, considered the comment 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. Except for 
the changes described previously, this AD is adopted as proposed in the 
NPRM.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed [Pilatus] PC-24 Temporary Revision 02371-016 to 
PC-24 Airplane Flight Manual, PC24-A-A15-99-0031-00A-0030A-A, dated 
November 1, 2019. The service information contains a step to be added 
to the pilot preflight procedures to check the ECB status. 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.

Costs of Compliance

    The FAA estimates that this AD affects 30 airplanes of U.S. 
registry. The FAA estimates the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
               Action                        Labor cost           Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
Revise the AFM......................  1 work-hour x $85 per                $0              $85           $2,550
                                       hour = $85.
----------------------------------------------------------------------------------------------------------------

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 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

0
1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive:

2021-06-01 Pilatus Aircraft Ltd.: Amendment 39-21467; Docket No.

[[Page 16511]]

FAA-2020-0917; Project Identifier MCAI-2020-00606-A.

(a) Effective Date

    This airworthiness directive (AD) is effective May 4, 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.

(d) Subject

    Air Transport Association (ATA) of America Code 24, Electrical 
Power.

(e) Reason

    This AD was prompted by a report that electronic circuit 
breakers (ECBs) were found in a locked state after maintenance, but 
before flight. ECBs were turned off prior to maintenance and then 
not reset properly after maintenance was complete. The FAA is 
issuing this AD to prevent improperly set ECBs, which if not 
detected, could lead to loss of power supply to equipment without 
indication to the flightcrew before take-off.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Revision of the Airplane Flight Manual (AFM)

    Within 30 days after the effective date of this AD, revise 
Section 4 of the existing AFM for your airplane by replacing the 
information as specified in [Pilatus] PC-24 Temporary Revision 
02371-016 to PC-24 Airplane Flight Manual, PC24-A-A15-99-0031-00A-
0030A-A, dated November 1, 2019 (PC-24 TR 02371-016). Using a 
different document with information identical to that contained in 
PC-24 TR 02371-016 is acceptable for compliance with the 
requirements of this paragraph.

(h) Alternative Methods of Compliance (AMOCs)

    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. Send information to: Doug Rudolph, 
Aviation Safety Engineer, FAA, General Aviation & Rotorcraft 
Section, International Validation Branch, 901 Locust Street, Room 
301, Kansas City, MO 64106; phone: (816) 329-4059; fax: (816) 329-
4090; email: [email protected]. In accordance with 14 CFR 39.19, 
send your request to your principal inspector or local Flight 
Standards District Office, as appropriate. 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 Doug Rudolph, 
Aviation Safety Engineer, FAA, General Aviation & Rotorcraft 
Section, International Validation Branch, 901 Locust Street, Room 
301, Kansas City, MO 64106; phone: (816) 329-4059; fax: (816) 329-
4090; email: [email protected].
    (2) Refer to European Union Aviation Safety Agency (EASA) AD No. 
2020-0096, dated April 29, 2020, for more information. You may 
examine the EASA AD in the AD docket at https://www.regulations.gov 
by searching for and locating Docket No. FAA-2020-0917.

(j) 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 Temporary Revision 02371-016 to PC-24 
Airplane Flight Manual, PC24-A-A15-99-0031-00A-0030A-A, dated 
November 1, 2019.
    (ii) [Reserved]
    (3) For Pilatus service information identified in this AD, 
contact Pilatus Aircraft Ltd., Customer Technical Support (MCC), 
P.O. Box 992, CH-6371 Stans, Switzerland; phone: +41 (0)41 619 67 
74; fax: +41 (0)41 619 67 73; email: aircraft.com">[email protected]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 Street, 
Kansas City, MO. For information on the availability of this 
material at the FAA, call 7(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: [email protected], or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued on March 1, 2021.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness 
Division, Aircraft Certification Service.
[FR Doc. 2021-06514 Filed 3-29-21; 8:45 am]
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