81_FR_23498 81 FR 23421 - Special Conditions: Gulfstream Aerospace Corporation Model GVII-G500 Airplanes, Design Roll Maneuver Requirement

81 FR 23421 - Special Conditions: Gulfstream Aerospace Corporation Model GVII-G500 Airplanes, Design Roll Maneuver Requirement

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 81, Issue 77 (April 21, 2016)

Page Range23421-23422
FR Document2016-09326

These special conditions are issued for the Gulfstream Aerospace Corporation (Gulfstream) Model GVII-G500 airplane. This airplane will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. This design feature is electronic flight controls that affect maneuvering. 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.

Federal Register, Volume 81 Issue 77 (Thursday, April 21, 2016) 
[Federal Register Volume 81, Number 77 (Thursday, April 21, 2016)]
[Rules and Regulations]
[Pages 23421-23422]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-09326]



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Rules and Regulations
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Federal Register / Vol. 81, No. 77 / Thursday, April 21, 2016 / Rules 
and Regulations

[[Page 23421]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 25

[Docket No. FAA-2015-1484; Special Conditions No. 25-617-SC]


Special Conditions: Gulfstream Aerospace Corporation Model GVII-
G500 Airplanes, Design Roll Maneuver Requirement

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final special conditions; request for comments.

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

SUMMARY: These special conditions are issued for the Gulfstream 
Aerospace Corporation (Gulfstream) Model GVII-G500 airplane. This 
airplane will have a novel or unusual design feature when compared to 
the state of technology envisioned in the airworthiness standards for 
transport category airplanes. This design feature is electronic flight 
controls that affect maneuvering. 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: This action is effective on Gulfstream Aerospace Corporation on 
April 21, 2016. We must receive your comments by June 6, 2016.

ADDRESSES: Send comments identified by docket number FAA-2015-1484 
using any of the following methods:
     Federal eRegulations Portal: Go to http://www.regulations.gov/ and follow the online instructions for sending 
your comments electronically.
     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.
     Hand Delivery or 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.
     Fax: Fax comments to Docket Operations at 202-493-2251.
    Privacy: The FAA will post all comments it receives, without 
change, to http://www.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 http://DocketsInfo.dot.gov/.
    Docket: Background documents or comments received may be read at 
http://www.regulations.gov/ at any time. Follow the online instructions 
for accessing the docket or go 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.

FOR FURTHER INFORMATION CONTACT: Walt Sippel, FAA, Airframe and Cabin 
Safety Branch, ANM-115, Transport Airplane Directorate, Aircraft 
Certification Service, 1601 Lind Avenue SW., Renton, Washington 98057-
3356; telephone 425-227-2774; facsimile 425-227-1320.

SUPPLEMENTARY INFORMATION The FAA has determined that notice of, and 
opportunity for prior public comment on, these special conditions is 
impracticable because these procedures would significantly delay 
issuance of the design approval and thus delivery of the affected 
airplane.
    In addition, 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 
publication in the Federal Register.

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 will consider all comments we receive by the closing date for 
comments. We may change these special conditions based on the comments 
we receive.

Background

    On March 29, 2012, Gulfstream Aerospace Corporation applied for a 
type certificate for their new Model GVII-G500 series airplane. The 
Model GVII-G500 series airplane will be a business jet capable of 
accommodating up to 19 passengers. It will incorporate a low, swept-
wing design with winglets and a T-tail. The powerplant will consist of 
two aft-fuselage-mounted Pratt & Whitney turbofan engines.

Type Certification Basis

    Under Title 14, Code of Federal Regulations (14 CFR) 21.17, 
Gulfstream must show that the Model GVII-G500 series airplane meets the 
applicable provisions of 14 CFR part 25, as amended by Amendments 25-1 
through 25-129.
    If the Administrator finds that the applicable airworthiness 
regulations (i.e., 14 CFR part 25) do not contain adequate or 
appropriate safety standards for the Model GVII-G500 series airplane 
because of a novel or unusual design feature, special conditions are 
prescribed under the provisions of Sec.  21.16.
    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 or similar 
novel or unusual design feature, the special conditions would also 
apply to the other model under Sec.  21.101.
    In addition to the applicable airworthiness regulations and special 
conditions, Model GVII-G500 series airplanes must comply with the fuel-
vent and exhaust-emission requirements of 14 CFR part 34, and the 
noise-

[[Page 23422]]

certification requirements of 14 CFR part 36. The FAA must issue a 
finding of regulatory adequacy under Sec.  611 of Public Law 92-574, 
the ``Noise Control Act of 1972.''
    The FAA issues special conditions, as defined in 14 CFR 11.19, in 
accordance with Sec.  11.38, and they become part of the type-
certification basis under Sec.  21.17(a)(2).

Novel or Unusual Design Features

    The Model GVII-G500 series airplane will incorporate the following 
novel or unusual design feature: An electronic flight-control system 
that provides control of the airplane through pilot inputs to the 
flight computer.
    Current 14 CFR part 25 airworthiness regulations account for 
control laws for which aileron deflection is proportional to control-
stick deflection. The regulations do not address nonlinearities or 
other effects on aileron actuation that electronic flight controls may 
cause. Because this type of system may affect flight loads, and 
therefore the structural capability of the airplane, specific 
regulations are needed to address these effects.

Discussion

    The current design roll maneuver requirement for structural loads 
in 14 CFR part 25 is inadequate for addressing airplanes with 
electronic flight controls that affect maneuvering. These special 
conditions adjust the current roll maneuver requirement, Sec.  
25.349(a), to take into account the effects of an electronic flight 
control system.
    These special conditions differ from current requirements in that 
they require roll maneuvers to result from defined movements of the 
flightdeck roll control, as opposed to defined aileron deflections. 
Also, the special conditions require an additional load condition at 
VA, in which the flightdeck roll control is returned to 
neutral following the initial roll input.
    These special conditions are limited to the roll axis only. Special 
conditions are no longer needed for the yaw axis because Sec.  25.351 
was revised at Amendment 25-91 to account for the effects of an 
electronic flight-control system.
    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.

Applicability

    As discussed above, these special conditions are applicable to the 
Gulfstream Model GVII-G500 airplane. Should Gulfstream apply at a later 
date for a change to the type certificate to include another model 
incorporating the same novel or unusual design feature, these special 
conditions would apply to that model as well.

Conclusion

    This action affects only a certain novel or unusual design feature 
on one model series of airplanes. It is not a rule of general 
applicability.
    The substance of these special conditions has been subjected to the 
notice and comment period in several prior instances 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, because a delay would 
significantly affect the certification of the airplane, the FAA has 
determined that prior public notice and comment are unnecessary and 
impracticable, and good cause exists for adopting these special 
conditions upon publication in the Federal Register.
    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 25

    Aircraft, Aviation safety, Reporting and recordkeeping 
requirements.

    The authority citation for these special conditions is as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701, 44702, 44704.

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 Gulfstream Model GVII-G500 airplanes.
    The following conditions, speeds, and flightdeck roll control 
motions (except as the motions may be limited by pilot effort) must be 
considered in combination with an airplane load factor of zero and of 
two-thirds of the positive maneuvering factor used in design. In 
determining the resulting control surface deflections, the torsional 
flexibility of the wing must be considered in accordance with Sec.  
25.301(b):
    1. Conditions corresponding to steady rolling velocities must be 
investigated. In addition, conditions corresponding to maximum angular 
acceleration must be investigated for airplanes with engines or other 
weight concentrations outboard of the fuselage. For the angular 
acceleration conditions, zero rolling velocity may be assumed in the 
absence of a rational time history investigation of the maneuver.
    2. At VA, sudden movement of the flightdeck roll control 
up to the limit is assumed. The position of the flightdeck roll control 
must be maintained until a steady roll rate is achieved and then must 
be returned suddenly to the neutral position.
    3. At VC, the flightdeck roll control must be moved 
suddenly and maintained so as to achieve a roll rate not less than that 
obtained in special condition 2.
    4. At VD, the flightdeck roll control must be moved 
suddenly and maintained so as to achieve a roll rate not less than one-
third of that obtained in special condition 2.

    Issued in Renton, Washington, on April 14, 2016.
Victor Wicklund,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-09326 Filed 4-20-16; 8:45 am]
 BILLING CODE 4910-13-P

23421 Rules and Regulations Federal Register Vol. 81, No. 77 Thursday, April 21, 2016 This section of the FEDERAL REGISTER Avenue SE., Room W12–140, West these special conditions effective upon contains regulatory documents having general Building Ground Floor, Washington, publication in the Federal Register. applicability and legal effect, most of which DC, 20590–0001. are keyed to and codified in the Code of Comments Invited • Hand Delivery or Courier: Take Federal Regulations, which is published under We invite interested people to take 50 titles pursuant to 44 U.S.C. 1510. comments to Docket Operations in Room W12–140 of the West Building part in this rulemaking by sending The Code of Federal Regulations is sold by Ground Floor at 1200 New Jersey written comments, data, or views. The the Superintendent of Documents. Prices of Avenue SE., Washington, DC, between 9 most helpful comments reference a new books are listed in the first FEDERAL a.m. and 5 p.m., Monday through specific portion of the special REGISTER issue of each week. Friday, except Federal holidays. conditions, explain the reason for any • Fax: Fax comments to Docket recommended change, and include supporting data. Operations at 202–493–2251. DEPARTMENT OF TRANSPORTATION We will consider all comments we Privacy: The FAA will post all receive by the closing date for Federal Aviation Administration comments it receives, without change, comments. We may change these special to http://www.regulations.gov/, conditions based on the comments we 14 CFR Part 25 including any personal information the receive. commenter provides. Using the search [Docket No. FAA–2015–1484; Special function of the docket Web site, anyone Background Conditions No. 25–617–SC] can find and read the electronic form of On March 29, 2012, Gulfstream Special Conditions: Gulfstream all comments received into any FAA Aerospace Corporation applied for a Aerospace Corporation Model GVII– docket, including the name of the type certificate for their new Model G500 Airplanes, Design Roll Maneuver individual sending the comment (or GVII–G500 series airplane. The Model Requirement signing the comment for an association, GVII–G500 series airplane will be a business, labor union, etc.). DOT’s business jet capable of accommodating AGENCY: Federal Aviation complete Privacy Act Statement can be up to 19 passengers. It will incorporate Administration (FAA), DOT. found in the Federal Register published a low, swept-wing design with winglets ACTION: Final special conditions; request on April 11, 2000 (65 FR 19477–19478), and a T-tail. The powerplant will for comments. as well as at http://DocketsInfo.dot consist of two aft-fuselage-mounted .gov/. Pratt & Whitney turbofan engines. SUMMARY: These special conditions are Docket: Background documents or issued for the Gulfstream Aerospace comments received may be read at Type Certification Basis Corporation (Gulfstream) Model GVII– http://www.regulations.gov/ at any time. Under Title 14, Code of Federal G500 airplane. This airplane will have Follow the online instructions for Regulations (14 CFR) 21.17, Gulfstream a novel or unusual design feature when accessing the docket or go to Docket must show that the Model GVII–G500 compared to the state of technology Operations in Room W12–140 of the series airplane meets the applicable envisioned in the airworthiness West Building Ground Floor at 1200 provisions of 14 CFR part 25, as standards for transport category New Jersey Avenue SE., Washington, amended by Amendments 25–1 through airplanes. This design feature is DC, between 9 a.m. and 5 p.m., Monday 25–129. electronic flight controls that affect through Friday, except Federal holidays. If the Administrator finds that the maneuvering. The applicable applicable airworthiness regulations airworthiness regulations do not contain FOR FURTHER INFORMATION CONTACT: Walt (i.e., 14 CFR part 25) do not contain adequate or appropriate safety standards Sippel, FAA, Airframe and Cabin Safety adequate or appropriate safety standards for this design feature. These special Branch, ANM–115, Transport Airplane for the Model GVII–G500 series airplane conditions contain the additional safety Directorate, Aircraft Certification because of a novel or unusual design standards that the Administrator Service, 1601 Lind Avenue SW., feature, special conditions are considers necessary to establish a level Renton, Washington 98057–3356; prescribed under the provisions of of safety equivalent to that established telephone 425–227–2774; facsimile § 21.16. by the existing airworthiness standards. 425–227–1320. Special conditions are initially DATES: This action is effective on SUPPLEMENTARY INFORMATION The FAA applicable to the model for which they Gulfstream Aerospace Corporation on has determined that notice of, and are issued. Should the type certificate April 21, 2016. We must receive your opportunity for prior public comment for that model be amended later to comments by June 6, 2016. on, these special conditions is include any other model that ADDRESSES: Send comments identified impracticable because these procedures incorporates the same or similar novel by docket number FAA–2015–1484 would significantly delay issuance of or unusual design feature, the special using any of the following methods: the design approval and thus delivery of conditions would also apply to the other jstallworth on DSK7TPTVN1PROD with RULES • Federal eRegulations Portal: Go to the affected airplane. model under § 21.101. http://www.regulations.gov/ and follow In addition, the substance of these In addition to the applicable the online instructions for sending your special conditions has been subject to airworthiness regulations and special comments electronically. the public comment process in several conditions, Model GVII–G500 series • Mail: Send comments to Docket prior instances with no substantive airplanes must comply with the fuel- Operations, M–30, U.S. Department of comments received. The FAA therefore vent and exhaust-emission requirements Transportation (DOT), 1200 New Jersey finds that good cause exists for making of 14 CFR part 34, and the noise- VerDate Sep<11>2014 13:24 Apr 20, 2016 Jkt 238001 PO 00000 Frm 00001 Fmt 4700 Sfmt 4700 E:\FR\FM\21APR1.SGM 21APR1

23422 Federal Register / Vol. 81, No. 77 / Thursday, April 21, 2016 / Rules and Regulations certification requirements of 14 CFR Should Gulfstream apply at a later date velocity may be assumed in the absence part 36. The FAA must issue a finding for a change to the type certificate to of a rational time history investigation of regulatory adequacy under § 611 of include another model incorporating the of the maneuver. Public Law 92–574, the ‘‘Noise Control same novel or unusual design feature, 2. At VA, sudden movement of the Act of 1972.’’ these special conditions would apply to flightdeck roll control up to the limit is The FAA issues special conditions, as that model as well. assumed. The position of the flightdeck defined in 14 CFR 11.19, in accordance roll control must be maintained until a Conclusion with § 11.38, and they become part of steady roll rate is achieved and then the type-certification basis under This action affects only a certain must be returned suddenly to the § 21.17(a)(2). novel or unusual design feature on one neutral position. model series of airplanes. It is not a rule 3. At VC, the flightdeck roll control Novel or Unusual Design Features of general applicability. must be moved suddenly and The Model GVII–G500 series airplane The substance of these special maintained so as to achieve a roll rate will incorporate the following novel or conditions has been subjected to the not less than that obtained in special unusual design feature: An electronic notice and comment period in several condition 2. flight-control system that provides prior instances and has been derived 4. At VD, the flightdeck roll control control of the airplane through pilot without substantive change from those must be moved suddenly and inputs to the flight computer. previously issued. It is unlikely that maintained so as to achieve a roll rate Current 14 CFR part 25 airworthiness prior public comment would result in a not less than one-third of that obtained regulations account for control laws for significant change from the substance in special condition 2. which aileron deflection is proportional contained herein. Therefore, because a to control-stick deflection. The delay would significantly affect the Issued in Renton, Washington, on April 14, certification of the airplane, the FAA 2016. regulations do not address nonlinearities or other effects on aileron has determined that prior public notice Victor Wicklund, actuation that electronic flight controls and comment are unnecessary and Acting Manager, Transport Airplane may cause. Because this type of system impracticable, and good cause exists for Directorate, Aircraft Certification Service. may affect flight loads, and therefore the adopting these special conditions upon [FR Doc. 2016–09326 Filed 4–20–16; 8:45 am] structural capability of the airplane, publication in the Federal Register. BILLING CODE 4910–13–P specific regulations are needed to The FAA is requesting comments to address these effects. allow interested persons to submit views that may not have been submitted DEPARTMENT OF HOMELAND Discussion in response to the prior opportunities SECURITY The current design roll maneuver for comment described above. requirement for structural loads in 14 Coast Guard List of Subjects in 14 CFR Part 25 CFR part 25 is inadequate for addressing airplanes with electronic flight controls Aircraft, Aviation safety, Reporting 33 CFR Part 100 that affect maneuvering. These special and recordkeeping requirements. [Docket No. USCG–2016–0209] conditions adjust the current roll The authority citation for these maneuver requirement, § 25.349(a), to special conditions is as follows: RIN 1625–AA08 take into account the effects of an Authority: 49 U.S.C. 106(g), 40113, 44701, electronic flight control system. 44702, 44704. Special Local Regulation; Wy-Hi These special conditions differ from Rowing Regatta; Detroit River, Trenton current requirements in that they The Special Conditions Channel; Wyandotte, MI require roll maneuvers to result from Accordingly, pursuant to the AGENCY: Coast Guard, DHS. defined movements of the flightdeck authority delegated to me by the roll control, as opposed to defined Administrator, the following special ACTION: Temporary final rule. aileron deflections. Also, the special conditions are issued as part of the type SUMMARY: The Coast Guard is conditions require an additional load certification basis for Gulfstream Model establishing a temporary special local condition at VA, in which the flightdeck GVII–G500 airplanes. regulation controlling movement of roll control is returned to neutral The following conditions, speeds, and vessels for certain waters of the Detroit following the initial roll input. flightdeck roll control motions (except River, Trenton Channel. This action is These special conditions are limited as the motions may be limited by pilot necessary and is intended to ensure to the roll axis only. Special conditions effort) must be considered in safety of life on navigable waters to be are no longer needed for the yaw axis combination with an airplane load used for a rowing event immediately because § 25.351 was revised at factor of zero and of two-thirds of the prior to, during, and immediately after Amendment 25–91 to account for the positive maneuvering factor used in this event. This regulation requires effects of an electronic flight-control design. In determining the resulting vessels to maintain a minimum speed system. control surface deflections, the torsional for safe navigation and maneuvering. These special conditions contain the flexibility of the wing must be additional safety standards that the considered in accordance with DATES: This temporary final rule is Administrator considers necessary to § 25.301(b): effective from 7:30 a.m. until 4:30 p.m. establish a level of safety equivalent to 1. Conditions corresponding to steady on May 7, 2016. For the purposes of jstallworth on DSK7TPTVN1PROD with RULES that established by the existing rolling velocities must be investigated. enforcement, actual notice will be used airworthiness standards. In addition, conditions corresponding to on May 7, 2016. maximum angular acceleration must be ADDRESSES: To view documents Applicability investigated for airplanes with engines mentioned in this preamble as being As discussed above, these special or other weight concentrations outboard available in the docket, go to http:// conditions are applicable to the of the fuselage. For the angular www.regulations.gov, type USCG–2016– Gulfstream Model GVII–G500 airplane. acceleration conditions, zero rolling 0209 in the ‘‘SEARCH’’ box and click VerDate Sep<11>2014 13:24 Apr 20, 2016 Jkt 238001 PO 00000 Frm 00002 Fmt 4700 Sfmt 4700 E:\FR\FM\21APR1.SGM 21APR1


Document Created: 2016-04-21 01:17:53
Document Modified: 2016-04-21 01:17:53
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionRules and Regulations
ActionFinal special conditions; request for comments.
DatesThis action is effective on Gulfstream Aerospace Corporation on April 21, 2016. We must receive your comments by June 6, 2016.
ContactWalt Sippel, FAA, Airframe and Cabin Safety Branch, ANM-115, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington 98057- 3356; telephone 425-227-2774; facsimile 425-227-1320.
FR Citation81 FR 23421 
CFR AssociatedAircraft; Aviation Safety and Reporting and Recordkeeping Requirements
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