Federal Register / Vol. 76, No. 203 / Thursday, October 20, 2011 / Rules and Regulations 65103 

Rational analysis, comparing an 

installation with another installation 

where TTI data were acquired and 

found acceptable, may also be viable. 

(d) Pelvis. Pelvic lateral acceleration 

must not exceed 130g. Pelvic 

acceleration data must be processed as 

defined in FMVSS Part 571.214, section 

S11.5. 

(e) Shoulder Strap Loads. Where 

upper torso straps (shoulder straps) are 

used for occupants, tension loads in 

individual straps must not exceed 1,750 

pounds. If dual straps are used for 

restraining the upper torso, the total 

strap tension loads must not exceed 

2,000 pounds. 

(f) Compression Loads. The 

compression load measured between the 

pelvis and the lumbar spine of the ATD 

may not exceed 1,500 pounds. 

(g) Emergency Evacuation. The 

airplane configuration must meet the 

emergency evacuation requirements of 

its certification basis with the seat 

occupied. 

(h) Test Requirements in § 23.562 

dynamic loads. The tests in § 23.562(a) 

(b) and (c) must be conducted on the 

side-facing seat. Floor deformation is 

required except for a seat that is 

cantilevered to the bulkhead. 

The following are the agreed to 

methods of compliance and testing 

requirements: 

General Test Guidelines 

(a) One longitudinal test with the SID 

anthropomorphic test dummy (ATD) or 

its equivalent, undeformed floor, no 

yaw, and with all lateral structural 

supports (armrests/walls) must be 

accomplished. 

—Pass/fail injury assessments: TTI and 

pelvic acceleration. 

(b) One longitudinal test with the 

Hybrid II ATD, deformed floor, with 10 

degrees yaw, and with all lateral 

structural supports (armrests/walls) 

must be accomplished. 

—Pass/fail injury assessments: HIC and 

upper torso restraint load, and 

restraint system retention. 

(c) Vertical (15 G’s) test must to be 

conducted with modified Hybrid II 

ATDs with existing pass/fail criteria. 

(d) The ATD can be tethered for the 

floor deformation test. 

(e) The seatbelt is not required to have 

a TSO Authorization but will need to 

comply with the TSO–C22g Minimum 

Performance Standards (MPS). 

Issued in Kansas City, Missouri, on 

October 12, 2011. 

John Colomy, 

Acting Manager, Small Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–27119 Filed 10–19–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. FAA–2011–1141; Special 

Conditions No. 25–451–SC] 

Special Conditions: Gulfstream 

Aerospace Corporation, Model GIV–X 

Airplane; Aircraft Electronic System 

Security Protection From Unauthorized 

External Access 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final special conditions; request 

for comments. 

SUMMARY: These special conditions are 

issued for the Gulfstream Aerospace 

Corporation Model GIV–X airplane. 

This airplane will have novel or 

unusual design features associated with 

the architecture and connectivity 

capabilities of the airplane’s computer 

systems and networks, which may allow 

access by external computer systems 

and networks. Connectivity by external 

systems and networks may result in 

security vulnerabilities to the airplane’s 

systems. The applicable airworthiness 

regulations do not contain adequate or 

appropriate safety standards for these 

design features. 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: The effective date of these 

special conditions is October 13, 2011. 

We must receive your comments by 

December 5, 2011. 

ADDRESSES: Send comments identified 

by docket number FAA–2011–1141 

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 by 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 

8 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 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: 

Varun Khanna, FAA, Airplane and 

Flight Crew Interface Branch, ANM– 

111, Transport Airplane Directorate, 

Aircraft Certification Service, 1601 Lind 

Avenue, SW., Renton, Washington 

98057–3356; telephone 425–227–1298; 

facsimile 425–227–1149. 

SUPPLEMENTARY INFORMATION: The FAA 

has determined that notice of, and 

opportunity for prior public comment 

on, these special conditions are 

impracticable because these procedures 

would significantly delay issuance of 

the design approval and thus delivery of 

the affected aircraft. 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 issuance. 

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 


pmangrum on DSK29S0YB1PROD with RULES
65104 Federal Register / Vol. 76, No. 203 / Thursday, October 20, 2011 / Rules and Regulations 

comments. We may change these special 

conditions based on the comments we 

receive. 

Background 

On April 21, 2011, Gulfstream 

Aerospace Corporation (hereafter 

referred to as ‘‘Gulfstream’’) applied for 

a supplemental type certificate to install 

a new interior design configuration in 

the Gulfstream Model GIV–X passenger 

airplane. The Gulfstream Model GIV–X 

is a two-engine jet transport airplane 

with a maximum takeoff weight of 

47,600 pounds and an interior 

configuration for a maximum of 19 

passengers. 

Type Certification Basis 

Under the provisions of Title 14, Code 

of Federal Regulations (14 CFR) 21.101, 

Gulfstream must show that the 

Gulfstream Model GIV–X airplane 

(hereafter referred to as the ‘‘GIV–X’’), as 

changed, continues to meet the 

applicable provisions of the regulations 

incorporated by reference in Type 

Certificate No. A12EA or the applicable 

regulations in effect on the date of 

application for the change. The 

regulations incorporated by reference in 

the type certificate are commonly 

referred to as the ‘‘original type 

certification basis.’’ The regulations 

incorporated by reference in Type 

Certificate No. A12EA are as follows: 

14 CFR part 25, effective February 1, 

1965, including Amendments 25–1 

through 25–56, except for the following 

sections which are limited to showing 

compliance with the amendments 

indicated: Part 25 effective February 1, 

1965, §§ 25.109, 25.571, and 25.813; 

part 25 Amendment 25–22, § 25.571; 

and part 25 Amendment 25–15, 

§ 25.807(c)(2). In addition, the 

certification basis includes certain 

special conditions, exemptions, and 

equivalent safety findings that are not 

relevant to these special conditions. 

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 GIV–X because of a novel or 

unusual design feature, special 

conditions are prescribed under the 

provisions of § 21.16. 

Special conditions are initially 

applicable to the model for which they 

are issued. Should the applicant apply 

for a supplemental type certificate to 

modify any other model included on the 

same type certificate to incorporate the 

same novel or unusual design feature, 

the special conditions would also apply 

to the other model. 

In addition to the applicable 

airworthiness regulations and special 

conditions, the GIV–X must comply 

with the fuel vent and exhaust emission 

requirements of 14 CFR part 34 and the 

noise certification requirements of 14 

CFR part 36. 

The FAA issues special conditions, as 

defined in 14 CFR 11.19, in accordance 

with § 11.38, and they become part of 

the type certification basis under 

§ 21.101. 

Novel or Unusual Design Features 

The GIV–X will incorporate the 

following novel or unusual design 

features: digital systems architecture 

composed of several connected 

networks. The proposed architecture 

and network configuration may be used 

for, or interfaced with, a diverse set of 

functions, including: 

1. Flight-safety related control, 

communication, and navigation systems 

(aircraft control domain); 

2. Airline business and administrative 

support (airline information domain); 

3. Passenger information and 

entertainment systems (passenger 

entertainment domain), and; 

4. The capability to allow access to or 

by external sources. 

Discussion 

The GIV–X architecture and network 

configuration may allow increased 

connectivity to, and access by, external 

airplane sources, airline operations, and 

maintenance systems to the aircraft 

control domain and airline information 

domain. The aircraft control domain 

and airline information domain perform 

functions required for the safe operation 

and maintenance of the airplane. 

Previously these domains had very 

limited connectivity with external 

sources. The architecture and network 

configuration may allow the 

exploitation of network security 

vulnerabilities resulting in intentional 

or unintentional destruction, disruption, 

degradation, or exploitation of data, 

systems, and networks critical to the 

safety and maintenance of the airplane. 

The existing regulations and guidance 

material did not anticipate these types 

of airplane system architectures. 

Furthermore, 14 CFR regulations and 

current system safety assessment policy 

and techniques do not address potential 

security vulnerabilities, which could be 

exploited by unauthorized access to 

airplane systems, data buses, and 

servers. Therefore, these special 

conditions are issued to ensure that the 

security (i.e., confidentiality, integrity, 

and availability) of airplane systems is 

not compromised by unauthorized 

wired or wireless electronic 

connections. 

Applicability 

As discussed above, these special 

conditions are applicable to the 

Gulfstream Model GIV–X. Should 

Gulfstream apply at a later date for a 

supplemental type certificate to modify 

any other model included on the Type 

Certificate No. A12EA to incorporate the 

same novel or unusual design features, 

these special conditions would apply to 

that model as well. 

Conclusion 

This action affects only certain novel 

or unusual design features on one model 

of airplane. It is not a rule of general 

applicability and 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 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, which is 

imminent, the FAA has determined that 

prior public notice and comment are 

unnecessary and impracticable, and 

good cause exists for adopting these 

special conditions 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 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 

GIV–X airplanes. 

1. The applicant must ensure airplane 

electronic system security protection 

from access by unauthorized sources 

external to the airplane, including those 

possibly caused by maintenance 

activity. 

2. The applicant must ensure that 

electronic system security threats are 

identified and assessed, and that 

effective electronic system security 

protection strategies are implemented to 


pmangrum on DSK29S0YB1PROD with RULES
Federal Register / Vol. 76, No. 203 / Thursday, October 20, 2011 / Rules and Regulations 65105 

protect the airplane from all adverse 

impacts on safety, functionality, and 

continued airworthiness. 

3. The applicant must establish 

appropriate procedures to allow the 

operator to ensure that continued 

airworthiness of the aircraft is 

maintained, including all post Type 

Certification modifications that may 

have an impact on the approved 

electronic system security safeguards. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–27196 Filed 10–19–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. FAA–2011–1140; Special 

Conditions No. 25–450–SC] 

Special Conditions: Gulfstream 

Aerospace Corporation, Model GIV–X 

Airplane; Isolation or Aircraft 

Electronic System Security Protection 

From Unauthorized Internal Access 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final special conditions; request 

for comments. 

SUMMARY: These special conditions are 

issued for the Gulfstream Aerospace 

Corporation Model GIV–X airplane. 

This airplane will have novel or 

unusual design features associated with 

connectivity of the passenger domain 

computer systems to the airplane 

critical systems and data networks. The 

applicable airworthiness regulations do 

not contain adequate or appropriate 

safety standards for these design 

features. 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: The effective date of these 

special conditions is October 13, 2011. 

We must receive your comments by 

December 5, 2011. 

ADDRESSES: Send comments identified 

by docket number FAA–2011–1140 

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 by 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 

8 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 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: 

Varun Khanna, FAA, Airplane and 

Flight Crew Interface Branch, ANM– 

111, Transport Airplane Directorate, 

Aircraft Certification Service, 1601 Lind 

Avenue, SW., Renton, Washington 

98057–3356; telephone 425–227–1298; 

facsimile 425–227–1149. 

SUPPLEMENTARY INFORMATION: The FAA 

has determined that notice of, and 

opportunity for prior public comment 

on, these special conditions are 

impracticable because these procedures 

would significantly delay issuance of 

the design approval and thus delivery of 

the affected aircraft. 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 issuance. 

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 April 21, 2011, Gulfstream 

Aerospace Corporation (hereafter 

referred to as ‘‘Gulfstream’’) applied for 

a supplemental type certificate to install 

a new interior design configuration in 

the Gulfstream Model GIV–X passenger 

airplane. The Gulfstream Model GIV–X 

is a two-engine jet transport airplane 

with a maximum takeoff weight of 

47,600 pounds and an interior 

configuration for a maximum of 19 

passengers. 

Type Certification Basis 

Under the provisions of Title 14, Code 

of Federal Regulations (14 CFR) 21.101, 

Gulfstream must show that the 

Gulfstream Model GIV–X airplane 

(hereafter referred to as the ‘‘GIV–X’’), as 

changed, continues to meet the 

applicable provisions of the regulations 

incorporated by reference in Type 

Certificate No. A12EA or the applicable 

regulations in effect on the date of 

application for the change. The 

regulations incorporated by reference in 

the type certificate are commonly 

referred to as the ‘‘original type 

certification basis.’’ The regulations 

incorporated by reference in Type 

Certificate No. A12EA are as follows: 

14 CFR part 25, effective February 1, 

1965, including Amendments 25–1 

through 25–56, except for the following 

sections which are limited to showing 

compliance with the amendments 

indicated: Part 25 effective February 1, 

1965, §§ 25.109, 25.571, and 25.813; 

part 25 Amendment 25–22, § 25.571; 

and part 25 Amendment 25–15, 

§ 25.807(c)(2). In addition, the 

certification basis includes certain 

special conditions, exemptions, and 

equivalent safety findings that are not 

relevant to these special conditions. 

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 GIV–X because of a novel or 

unusual design feature, special 

conditions are prescribed under the 

provisions of § 21.16. 

Special conditions are initially 

applicable to the model for which they 

are issued. Should the applicant apply 

for a supplemental type certificate to 

modify any other model included on the 


pmangrum on DSK29S0YB1PROD with RULES