Special Conditions: Pilatus Aircraft Ltd., PC-24; Pressure Defuel System, 32614-32616 [2017-14937]

Download as PDF 32614 Federal Register / Vol. 82, No. 135 / Monday, July 17, 2017 / Rules and Regulations investigative interest on the part of DHS as well as the recipient agency and present an impediment to law enforcement efforts and/or efforts to preserve national security. This Final Rule replaces a previous Final Rule that was broader and permitted to DHS to exempt this system from more subsections of the Privacy Act’s requirements. The commenter also noted that when an investigation is complete or has been made public, the information should no longer be exempt from the Privacy Act; individuals have a right to know about disclosures of their personal information held by the agency. DHS concurs in part with the comment and has adjusted the Final Rule and SORN accordingly. When an investigation is complete, the agency will make a caseby-case determination whether providing an accounting of disclosures would undermine the investigative process and present an impediment to law enforcement efforts and/or efforts to preserve national security. There may be circumstances in which information will continue to be exempted if the fact that an investigation occurred remains sensitive after completion. Nonetheless, excluding accounting of disclosures, individuals have the ability to request and be granted both access to and amendment of, if legally authorized, categories of records from this system contained on them pursuant to subsection (d) of the Privacy Act. Except as noted above, the Department will implement the rulemaking as proposed. List of Subjects in 6 CFR Part 5 Freedom of information, Privacy. For the reasons stated in the preamble, DHS amends chapter I of title 6, Code of Federal Regulations, as follows: PART 5—DISCLOSURE OF RECORDS AND INFORMATION 1. Revise the authority citation for part 5 to read as follows: ■ Authority: 5 U.S.C. 552; 5 U.S.C. 552a; 5 U.S.C. 301; 6 U.S.C. 101 et seq.; E.O. 13392, 70 FR 75373, 3 CFR, 2005 Comp., p. 216. 2. In appendix C to part 5, revise paragraph 34 to read as follows: jstallworth on DSK7TPTVN1PROD with RULES ■ Appendix C to Part 5—DHS Systems of Records Exempt From the Privacy Act * * * * * 34. The DHS/USCG–029 Notice of Arrival and Departure System of Records consists of electronic and paper records and will be used by DHS and its components. The DHS/ USCG–029 Notice of Arrival and Departure System of Records is a repository of VerDate Sep<11>2014 14:51 Jul 14, 2017 Jkt 241001 information held by DHS in connection with its several and varied missions and functions, including, but not limited to the enforcement of civil and criminal laws; investigations, inquiries, and proceedings there under. The DHS/USCG–029 Notice of Arrival and Departure System of Records contains information that is collected by, on behalf of, in support of, or in cooperation with DHS and its components and may contain personally identifiable information collected by other federal, state, local, tribal, foreign, or international government agencies. The Secretary of Homeland Security, pursuant to 5 U.S.C. 552a(j)(2), exempted this system from the following provisions of the Privacy Act: Sections (c)(3), (e)(8), and (g) of the Privacy Act of 1974, as amended, as is necessary and appropriate to protect this information. Further, DHS has exempted section (c)(3) of the Privacy Act of 1974, as amended, pursuant to 5 U.S.C. 552a(k)(2), as is necessary and appropriate to protect this information. Exemptions from these particular subsections are justified, on a case-by-case basis to be determined at the time a request is made, for the following reasons: (a) From subsection (c)(3) (Accounting for Disclosures) because release of the accounting of disclosures could alert the subject of an investigation of an actual or potential criminal, civil, or regulatory violation to the existence of that investigation and reveal investigative interest on the part of DHS as well as the recipient agency. Disclosure of the accounting would therefore present a serious impediment to law enforcement efforts and/or efforts to preserve national security. Disclosure of the accounting would also permit the individual who is the subject of a record to impede the investigation, to tamper with witnesses or evidence, and to avoid detection or apprehension, which would undermine the entire investigative process. When an investigation has been completed, information on disclosures made may continue to be exempted if the fact that an investigation occurred remains sensitive after completion. (b) From subsection (e)(8) (Notice on Individuals) because compliance would interfere with DHS’s ability to obtain, serve, and issue subpoenas, warrants, and other law enforcement mechanisms that may be filed under seal and could result in disclosure of investigative techniques, procedures, and evidence. (c) From subsection (g)(1) (Civil Remedies) to the extent that the system is exempt from other specific subsections of the Privacy Act. * * * * * Dated: July 10, 2017. Jonathan R. Cantor, Acting Chief Privacy Officer, Department of Homeland Security. [FR Doc. 2017–14845 Filed 7–14–17; 8:45 am] BILLING CODE 9110–10–P PO 00000 Frm 00002 Fmt 4700 Sfmt 4700 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 23 [Docket No. FAA–2017–0704; Special Conditions No. 23–284–SC] Special Conditions: Pilatus Aircraft Ltd., PC–24; Pressure Defuel System Federal Aviation Administration (FAA), DOT. ACTION: Final special conditions; request for comments. AGENCY: These special conditions are issued for the Pilatus Aircraft Ltd. model PC–24 airplane. This airplane will have a novel or unusual design feature associated with installation of a pressure fueling system with defuel capability. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards. DATES: These special conditions are effective July 17, 2017, and are applicable July 6, 2017. ADDRESSES: Send comments identified by docket number FAA–2017–0704 using any of the following methods: b Federal eRegulations Portal: Go to https://www.regulations.gov and follow the online instructions for sending your comments electronically. b Mail: Send comments to Docket Operations, M–30, U.S. Department of Transportation (DOT), 1200 New Jersey Avenue SE., Room W12–140, West Building Ground Floor, Washington, DC 20590–0001. b Hand Delivery of Courier: Take comments to Docket Operations in Room W12–140 of the West Building Ground Floor at 1200 New Jersey Avenue SE., Washington, DC, between 9 a.m., and 5 p.m., Monday through Friday, except Federal holidays. b Fax: Fax comments to Docket Operations at 202–493–2251. Privacy: The FAA will post all comments it receives, without change, to https://regulations.gov, including any personal information the commenter provides. Using the search function of the docket Web site, anyone can find and read the electronic form of all comments received into any FAA docket, including the name of the individual sending the comment (or signing the comment for an association, business, labor union, etc.). DOT’s complete Privacy Act Statement can be SUMMARY: E:\FR\FM\17JYR1.SGM 17JYR1 Federal Register / Vol. 82, No. 135 / Monday, July 17, 2017 / Rules and Regulations found in the Federal Register published on April 11, 2000 (65 FR 19477–19478), as well as at https://DocketsInfo.dot.gov. Docket: Background documents or comments received may be read at https://www.regulations.gov at any time. Follow the online instructions for accessing the docket or go to the Docket Operations in Room W12–140 of the West Building Ground Floor at 1200 New Jersey Avenue SE., Washington, DC, between 9 a.m., and 5 p.m., Monday through Friday, except Federal holidays. FOR FURTHER INFORMATION CONTACT: Jeff Pretz, ACE–111, Federal Aviation Administration, Small Airplane Directorate, Aircraft Certification Service, 901 Locust Street, Kansas City, MO 64106; telephone (816) 329–3239; facsimile (816) 329–4090. SUPPLEMENTARY INFORMATION: The FAA has determined, in accordance with 5 U.S.C. 553(b)(3)(B) and 553(d)(3), that notice and opportunity for prior public comment hereon are unnecessary because the substance of these special conditions has been subject to the public comment process in several prior instances with no substantive comments received. The FAA therefore finds that good cause exists for making these special conditions effective upon issuance. Special condition number 2 Company/airplane model 23–98–03–SC ... Raytheon Aircraft Company/Model 3000. Ayers Corporation/Model LM200. Cessna Aircraft Company/ Model 525C. 23–110–SC ....... 23–234–SC ....... Comments Invited jstallworth on DSK7TPTVN1PROD with RULES We invite interested people to take part in this rulemaking by sending written comments, data, or views. The most helpful comments reference a specific portion of the special conditions, explain the reason for any recommended change, and include supporting data. We ask that you send us two copies of written comments. We will consider all comments we receive on or before the closing date for comments. We will consider comments filed late if it is possible to do so without incurring expense or delay. We may change these special conditions based on the comments we receive. Background On July 9, 2012, Pilatus Aircraft Ltd. applied for a type certificate for their new PC–24 airplane. The PC–24 is an 2 See https://rgl.faa.gov/ to review the listed special conditions. VerDate Sep<11>2014 14:51 Jul 14, 2017 Jkt 241001 aluminum pressurized low-wing business jet with a T-tail configuration and retractable undercarriage designed to meet the commuter category requirements of part 23. Two Williams International FJ44–4A Turbofan engines rated at 3,400 pounds (lbs.) of take-off thrust, situated in nacelles on each side of the rear fuselage power the PC–24. The PC–24 will have a Maximum Takeoff Weight (MTOW) of 17,200 pounds (7,802 kilograms). It has a maximum seating capacity of up to ten passengers and one pilot or two pilots. The airplane will be certificated for day and night Visual Flight Rules, Instrument Flight Rules, and flight into known icing. The PC–24 is equipped with a pressure refuel/defuel system. The applicable regulations do not include requirements for the pressure-defueling portion of the system. Type Certification Basis Under the provisions of 14 CFR 21.17, Pilatus Aircraft Ltd. must show that the PC–24 meets the applicable provisions of 14 CFR part 23, as amended by amendments 23–1 through 23–62 thereto. If the Administrator finds that the applicable airworthiness regulations (i.e., 14 CFR part 23) do not contain adequate or appropriate safety standards for the PC–24 because of a novel or unusual design feature, special conditions are prescribed under the provisions of § 21.16. In addition to the applicable airworthiness regulations and special conditions, the PC–24 must comply with the fuel vent and exhaust emission requirements of 14 CFR part 34, the noise certification requirements of 14 CFR part 36, and the FAA must issue a finding of regulatory adequacy pursuant to section 611 of Public Law 92–574, the ‘‘Noise Control Act of 1972.’’ The FAA issues special conditions, as defined in § 11.19, under § 11.38 and they become part of the type certification basis under § 21.17(a)(2). Special conditions are initially applicable to the model for which they are issued. Should the type certificate for that model be amended later to include any other model that incorporates the same novel or unusual design feature, the FAA would apply these special conditions to the other models under § 21.101. 32615 Discussion As discussed in the ‘‘Background’’ section, the PC–24 will incorporate a pressure refuel/defuel system. The defueling capability is considered a novel design for this type of airplane. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. Mandating additional requirements by adopting 14 CFR 25.979(e)—which is the part 25 pressure defuel requirement—mitigates the concern associated with installation of a pressure defueling system. Applicability As discussed above, these special conditions are applicable to the PC–24. Should Pilatus Aircraft Ltd. apply at a later date for a change to the type certificate to include another model on the same type certificate incorporating the same novel or unusual design feature, the FAA would apply these special conditions to that model as well. Conclusion This action affects only certain novel or unusual design features on one model of airplanes. It is not a rule of general applicability and it affects only the applicant who applied to the FAA for approval of these features on the airplane. The substance of these special conditions has been subjected to the notice and comments period in several prior instances—identified above—and has been derived without substantive change from those previously issued. It is unlikely that prior public comment would result in a significant change from the substance contained herein. Therefore, notice and opportunity for prior public comments hereon are unnecessary and the FAA finds good cause, in accordance with 5 U.S.C. 553(b)(3)(B) and 553(d)(3), making these special conditions effective upon issuance. The FAA is requesting comments to allow interested persons to submit views that may not have been submitted in response to the prior opportunities for comment described above. List of Subjects in 14 CFR Part 23 Aircraft, Aviation safety, Signs and symbols. Novel or Unusual Design Features Citation The PC–24 will incorporate the following novel or unusual design features: Pressure Fueling System with Defuel Capability The authority citation for these special conditions is as follows: PO 00000 Frm 00003 Fmt 4700 Sfmt 4700 Authority: 49 U.S.C. 106(f), 106(g), 40113 and 44701; 14 CFR 21.16; and 14 CFR 11.38 and 11.19. E:\FR\FM\17JYR1.SGM 17JYR1 32616 Federal Register / Vol. 82, No. 135 / Monday, July 17, 2017 / Rules and Regulations The Special Conditions Accordingly, pursuant to the authority delegated to me by the Administrator, the following special conditions are issued as part of the type certification basis for Pilatus Aircraft Ltd. PC–24 airplanes. ■ 1. Pressure Fueling System For pressure fueling systems, in addition to § 23.979, the following applies: The airplane defueling system—not including fuel tanks and fuel tank vents—must withstand an ultimate load that is 2.0 times the load arising from the maximum permissible defueling pressure—positive or negative—at the airplane fueling connection. Issued in Kansas City, Missouri, on July 6, 2017. Kelly Broadway, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 2017–14937 Filed 7–14–17; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 23 [Docket No. FAA–2017–0702; Special Conditions No. 23–282–SC] Special Conditions: Pilatus Aircraft Ltd., PC–24; Electronic Engine Control (EEC) Federal Aviation Administration (FAA), DOT. ACTION: Final special conditions; request for comments. AGENCY: These special conditions are issued for the Pilatus Aircraft Ltd. PC– 24 airplane. This airplane will have a novel or unusual design features associated with installation of an electronic engine control. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards. DATES: These special conditions are effective July 17, 2017 and are applicable beginning July 6, 2017. ADDRESSES: Send comments identified by docket number FAA–2017–0702 using any of the following methods: b Federal eRegulations Portal: Go to https://www.regulations.gov and follow jstallworth on DSK7TPTVN1PROD with RULES SUMMARY: VerDate Sep<11>2014 14:51 Jul 14, 2017 Jkt 241001 the online instructions for sending your comments electronically. b Mail: Send comments to Docket Operations, M–30, U.S. Department of Transportation (DOT), 1200 New Jersey Avenue SE., Room W12–140, West Building Ground Floor, Washington, DC 20590–0001. b Hand Delivery of Courier: Take comments to Docket Operations in Room W12–140 of the West Building Ground Floor at 1200 New Jersey Avenue SE., Washington, DC, between 9 a.m., and 5 p.m., Monday through Friday, except Federal holidays. b Fax: Fax comments to Docket Operations at 202–493–2251. Privacy: The FAA will post all comments it receives, without change, to https://regulations.gov, including any personal information the commenter provides. Using the search function of the docket Web site, anyone can find and read the electronic form of all comments received into any FAA docket, including the name of the individual sending the comment (or signing the comment for an association, business, labor union, etc.). DOT’s complete Privacy Act Statement can be found in the Federal Register published on April 11, 2000 (65 FR 19477–19478), as well as at https://DocketsInfo.dot.gov. Docket: Background documents or comments received may be read at https://www.regulations.gov at any time. Follow the online instructions for accessing the docket or go to the Docket Operations in Room W12–140 of the West Building Ground Floor at 1200 New Jersey Avenue SE., Washington, DC, between 9 a.m., and 5 p.m., Monday through Friday, except Federal holidays. FOR FURTHER INFORMATION CONTACT: Jeff Pretz, ACE–111, Federal Aviation Administration, Small Airplane Directorate, Aircraft Certification Service, 901 Locust Street, Kansas City, MO 64106; telephone (816) 329–3239; facsimile (816) 329–4090. SUPPLEMENTARY INFORMATION: The FAA has determined, in accordance with 5 U.S.C. 553(b)(3)(B) and 553(d)(3), that notice and opportunity for prior public comment hereon are unnecessary because the substance of these special conditions has been subject to the public comment process in several prior instances with no substantive comments received. The FAA therefore finds good cause exists for making these special conditions effective upon issuance. Special condition No.2 23–264–SC ....... PO 00000 Frm 00004 Company/airplane model Honda Aircraft Company/ Model HA–420. Fmt 4700 Sfmt 4700 Special condition No.2 23–267–SC ....... 23–268–SC ....... Company/airplane model Cirrus Design Corporation/ Model SF50. Korean Aircraft Industries/ Model K–100. Comments Invited We invite interested people to take part in this rulemaking by sending written comments, data, or views. The most helpful comments reference a specific portion of the special conditions, explain the reason for any recommended change, and include supporting data. We ask that you send us two copies of written comments. We will consider all comments we receive on or before the closing date for comments. We will consider comments filed late if it is possible to do so without incurring expense or delay. We may change these special conditions based on the comments we receive. Background On July 9th 2012, Pilatus Aircraft Ltd. applied for a type certificate for their new PC–24 airplane. The PC–24 is an aluminum pressurized low-wing business jet with a T-tail configuration and retractable undercarriage designed to meet the commuter category requirements of part 23. Two Williams International FJ44–4A Turbofan engines rated at 3,400 pounds (lbs.) of take-off thrust, situated in nacelles on each side of the rear fuselage power the PC–24. The PC–24 will have a Maximum Takeoff Weight (MTOW) of 17,200 pounds (7,802 kilograms). It has a maximum seating capacity of up to ten passengers and one or two pilots. The airplane will be certificated for day and night Visual Flight Rules and Instrument Flight Rules and approval for flight into known icing. The PC–24 airplane’s two Williams International FJ44–4A turbofan engines each use an electronic engine control system (EEC)—commonly referred to as a Full Authority Digital Engine Control (FADEC)—instead of a traditional mechanical control system. Even though the engine control system will be certificated as part of the engine, the installation of an engine with an electronic control system requires evaluation due to critical environmental effects and possible effects on or by other airplane systems. Examples of critical environmental effects include— • Indirect effects of lightning; • Radio interference with other airplane electronic systems; and 2 See https://rgl.faa.gov/ to view the listed special conditions. E:\FR\FM\17JYR1.SGM 17JYR1

Agencies

[Federal Register Volume 82, Number 135 (Monday, July 17, 2017)]
[Rules and Regulations]
[Pages 32614-32616]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-14937]


=======================================================================
-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 23

[Docket No. FAA-2017-0704; Special Conditions No. 23-284-SC]


Special Conditions: Pilatus Aircraft Ltd., PC-24; Pressure Defuel 
System

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final special conditions; request for comments.

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

SUMMARY: These special conditions are issued for the Pilatus Aircraft 
Ltd. model PC-24 airplane. This airplane will have a novel or unusual 
design feature associated with installation of a pressure fueling 
system with defuel capability. The applicable airworthiness regulations 
do not contain adequate or appropriate safety standards for this design 
feature. These special conditions contain the additional safety 
standards the Administrator considers necessary to establish a level of 
safety equivalent to that established by the existing airworthiness 
standards.

DATES: These special conditions are effective July 17, 2017, and are 
applicable July 6, 2017.

ADDRESSES: Send comments identified by docket number FAA-2017-0704 
using any of the following methods:
    [square] Federal eRegulations Portal: Go to https://www.regulations.gov and follow the online instructions for sending your 
comments electronically.
    [squ] Mail: Send comments to Docket Operations, M-30, U.S. 
Department of Transportation (DOT), 1200 New Jersey Avenue SE., Room 
W12-140, West Building Ground Floor, Washington, DC 20590-0001.
    [squ] Hand Delivery of Courier: Take comments to Docket Operations 
in Room W12-140 of the West Building Ground Floor at 1200 New Jersey 
Avenue SE., Washington, DC, between 9 a.m., and 5 p.m., Monday through 
Friday, except Federal holidays.
    [squ] Fax: Fax comments to Docket Operations at 202-493-2251.
    Privacy: The FAA will post all comments it receives, without 
change, to https://regulations.gov, including any personal information 
the commenter provides. Using the search function of the docket Web 
site, anyone can find and read the electronic form of all comments 
received into any FAA docket, including the name of the individual 
sending the comment (or signing the comment for an association, 
business, labor union, etc.). DOT's complete Privacy Act Statement can 
be

[[Page 32615]]

found in the Federal Register published on April 11, 2000 (65 FR 19477-
19478), as well as at https://DocketsInfo.dot.gov.
    Docket: Background documents or comments received may be read at 
https://www.regulations.gov at any time. Follow the online instructions 
for accessing the docket or go to the Docket Operations in Room W12-140 
of the West Building Ground Floor at 1200 New Jersey Avenue SE., 
Washington, DC, between 9 a.m., and 5 p.m., Monday through Friday, 
except Federal holidays.

FOR FURTHER INFORMATION CONTACT: Jeff Pretz, ACE-111, Federal Aviation 
Administration, Small Airplane Directorate, Aircraft Certification 
Service, 901 Locust Street, Kansas City, MO 64106; telephone (816) 329-
3239; facsimile (816) 329-4090.

SUPPLEMENTARY INFORMATION: The FAA has determined, in accordance with 5 
U.S.C. 553(b)(3)(B) and 553(d)(3), that notice and opportunity for 
prior public comment hereon are unnecessary because the substance of 
these special conditions has been subject to the public comment process 
in several prior instances with no substantive comments received. The 
FAA therefore finds that good cause exists for making these special 
conditions effective upon issuance.

------------------------------------------------------------------------
     Special condition number \2\            Company/airplane model
------------------------------------------------------------------------
23-98-03-SC...........................  Raytheon Aircraft Company/Model
                                         3000.
23-110-SC.............................  Ayers Corporation/Model LM200.
23-234-SC.............................  Cessna Aircraft Company/Model
                                         525C.
------------------------------------------------------------------------

Comments Invited
---------------------------------------------------------------------------

    \2\ See https://rgl.faa.gov/ to review the listed special 
conditions.
---------------------------------------------------------------------------

    We invite interested people to take part in this rulemaking by 
sending written comments, data, or views. The most helpful comments 
reference a specific portion of the special conditions, explain the 
reason for any recommended change, and include supporting data. We ask 
that you send us two copies of written comments.
    We will consider all comments we receive on or before the closing 
date for comments. We will consider comments filed late if it is 
possible to do so without incurring expense or delay. We may change 
these special conditions based on the comments we receive.

Background

    On July 9, 2012, Pilatus Aircraft Ltd. applied for a type 
certificate for their new PC-24 airplane. The PC-24 is an aluminum 
pressurized low-wing business jet with a T-tail configuration and 
retractable undercarriage designed to meet the commuter category 
requirements of part 23. Two Williams International FJ44-4A Turbofan 
engines rated at 3,400 pounds (lbs.) of take-off thrust, situated in 
nacelles on each side of the rear fuselage power the PC-24. The PC-24 
will have a Maximum Take-off Weight (MTOW) of 17,200 pounds (7,802 
kilograms). It has a maximum seating capacity of up to ten passengers 
and one pilot or two pilots. The airplane will be certificated for day 
and night Visual Flight Rules, Instrument Flight Rules, and flight into 
known icing.
    The PC-24 is equipped with a pressure refuel/defuel system. The 
applicable regulations do not include requirements for the pressure-
defueling portion of the system.

Type Certification Basis

    Under the provisions of 14 CFR 21.17, Pilatus Aircraft Ltd. must 
show that the PC-24 meets the applicable provisions of 14 CFR part 23, 
as amended by amendments 23-1 through 23-62 thereto.
    If the Administrator finds that the applicable airworthiness 
regulations (i.e., 14 CFR part 23) do not contain adequate or 
appropriate safety standards for the PC-24 because of a novel or 
unusual design feature, special conditions are prescribed under the 
provisions of Sec.  21.16.
    In addition to the applicable airworthiness regulations and special 
conditions, the PC-24 must comply with the fuel vent and exhaust 
emission requirements of 14 CFR part 34, the noise certification 
requirements of 14 CFR part 36, and the FAA must issue a finding of 
regulatory adequacy pursuant to section 611 of Public Law 92-574, the 
``Noise Control Act of 1972.''
    The FAA issues special conditions, as defined in Sec.  11.19, under 
Sec.  11.38 and they become part of the type certification basis under 
Sec.  21.17(a)(2).
    Special conditions are initially applicable to the model for which 
they are issued. Should the type certificate for that model be amended 
later to include any other model that incorporates the same novel or 
unusual design feature, the FAA would apply these special conditions to 
the other models under Sec.  21.101.

Novel or Unusual Design Features

    The PC-24 will incorporate the following novel or unusual design 
features:

Pressure Fueling System with Defuel Capability

Discussion

    As discussed in the ``Background'' section, the PC-24 will 
incorporate a pressure refuel/defuel system. The defueling capability 
is considered a novel design for this type of airplane. The applicable 
airworthiness regulations do not contain adequate or appropriate safety 
standards for this design feature. Mandating additional requirements by 
adopting 14 CFR 25.979(e)--which is the part 25 pressure defuel 
requirement--mitigates the concern associated with installation of a 
pressure defueling system.

Applicability

    As discussed above, these special conditions are applicable to the 
PC-24. Should Pilatus Aircraft Ltd. apply at a later date for a change 
to the type certificate to include another model on the same type 
certificate incorporating the same novel or unusual design feature, the 
FAA would apply these special conditions to that model as well.

Conclusion

    This action affects only certain novel or unusual design features 
on one model of airplanes. It is not a rule of general applicability 
and it affects only the applicant who applied to the FAA for approval 
of these features on the airplane.
    The substance of these special conditions has been subjected to the 
notice and comments period in several prior instances--identified 
above--and has been derived without substantive change from those 
previously issued. It is unlikely that prior public comment would 
result in a significant change from the substance contained herein. 
Therefore, notice and opportunity for prior public comments hereon are 
unnecessary and the FAA finds good cause, in accordance with 5 U.S.C. 
553(b)(3)(B) and 553(d)(3), making these special conditions effective 
upon issuance. The FAA is requesting comments to allow interested 
persons to submit views that may not have been submitted in response to 
the prior opportunities for comment described above.

List of Subjects in 14 CFR Part 23

    Aircraft, Aviation safety, Signs and symbols.

Citation

    The authority citation for these special conditions is as follows:

    Authority: 49 U.S.C. 106(f), 106(g), 40113 and 44701; 14 CFR 
21.16; and 14 CFR 11.38 and 11.19.

[[Page 32616]]

The Special Conditions

0
Accordingly, pursuant to the authority delegated to me by the 
Administrator, the following special conditions are issued as part of 
the type certification basis for Pilatus Aircraft Ltd. PC-24 airplanes.
1. Pressure Fueling System
    For pressure fueling systems, in addition to Sec.  23.979, the 
following applies:
    The airplane defueling system--not including fuel tanks and fuel 
tank vents--must withstand an ultimate load that is 2.0 times the load 
arising from the maximum permissible defueling pressure--positive or 
negative--at the airplane fueling connection.

    Issued in Kansas City, Missouri, on July 6, 2017.
Kelly Broadway,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2017-14937 Filed 7-14-17; 8:45 am]
BILLING CODE 4910-13-P
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