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[Federal Register Volume 78, Number 207 (Friday, October 25, 2013)]
[Rules and Regulations]
[Pages 63845-63847]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-24987]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 25

[Docket No. FAA-2013-0774; Special Conditions No. 25-497-SC]

Special Conditions: Embraer S.A., Model EMB-550 Airplanes; 
Isolation or Airplane Electronic System Security Protection From 
Unauthorized Internal Access

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final special condition; request for comments.

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SUMMARY: These special conditions are issued for the Embraer S.A. Model 
EMB-550 airplane. This airplane will have a novel or unusual design 
feature 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 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: The effective date of these special conditions is October 25, 
2013. We must receive your comments by December 9, 2013.

ADDRESSES: Send comments identified by docket number FAA-2013-0774 
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 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 
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 
publication.

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 May 14, 2009, Embraer S.A. applied for a type certificate for 
their new Model EMB-550 airplane. The Model EMB-550 airplane is the 
first of a new family of jet airplanes designed for corporate flight, 
fractional, charter, and private owner operations. The aircraft has a 
conventional configuration with low wing and T-tail empennage. The 
primary structure is metal with composite empennage and control 
surfaces. The Model EMB-550 airplane is designed for 8 passengers, with 
a maximum of 12 passengers. It is equipped with two Honeywell HTF7500-E 
medium bypass ratio turbofan engines mounted on aft

[[Page 63846]]

fuselage pylons. Each engine produces approximately 6,540 pounds of 
thrust for normal takeoff. The primary flight controls consist of 
hydraulically powered fly-by-wire elevators, ailerons and rudder, 
controlled by the pilot or copilot sidestick.
    The digital systems architecture for the Embraer EMB-550 series of 
airplanes is composed of several connected networks. This proposed 
network architecture is used for a diverse set of functions, including:
     Flight-safety related control and navigation systems,
     Airline business and administrative support, and
     Passenger entertainment.

Type Certification Basis

    Under the provisions of Title 14, Code of Federal Regulations (14 
CFR) part 21.17, Embraer S.A. must show that the Model EMB-550 airplane 
meets the applicable provisions of part 25, as amended by Amendments 
25-1 through 25-127 thereto.
    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 EMB-550 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, the Model EMB-550 airplane 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 and 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 Embraer S.A. Model EMB-550 airplane will incorporate the 
following novel or unusual design features: the architecture allows 
connections to previously isolated data networks connected to systems 
that perform functions required for the safe operation of the airplane. 
This proposed data network and design integration may result in 
security vulnerabilities from intentional or unintentional corruption 
of data and systems critical to the safety and maintenance of the 
airplane. The existing regulations and guidance material did not 
anticipate this type of system architecture or electronic access to 
airplane systems. Furthermore, 14 CFR part 25 regulations and current 
system safety assessment policy and techniques do not address potential 
security vulnerabilities, which could be caused by unauthorized access 
to airplane data buses and servers. The intent of these special 
conditions are to ensure that security, integrity, and availability of 
airplane systems are not compromised by certain wired or wireless 
electronic connections between airplane data busses and networks.

Discussion

    The Embraer S.A. Model EMB-550 airplane's integrated network 
configuration may allow increased connectivity with external network 
sources and will have more interconnected networks and systems, such as 
passenger entertainment and information services, than previous Embraer 
airplane models. This may allow the exploitation of network security 
vulnerabilities and increase risks potentially resulting in unsafe 
conditions for the airplane and its occupants.
    This potential exploitation of security vulnerabilities may result 
in intentional or unintentional destruction, disruption, degradation, 
or exploitation of data and systems critical to the safety and 
maintenance of the airplane. The existing regulations and guidance 
material did not anticipate these types of 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 networks 
and servers. Therefore, these special conditions and a means of 
compliance are being 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 between airplane systems and networks and the passenger 
entertainment domain.

Applicability

    As discussed above, these special conditions are applicable to the 
Embraer S.A. Model EMB-550 airplane. Should Embraer S.A. apply at a 
later date for a change to the type certificate to include another 
model incorporating the same novel or unusual design feature, the 
special conditions would apply 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.
    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. 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 Embraer S.A. Model EMB-550 airplanes.

Isolation or Airplane Electronic System Security Protection From 
Unauthorized Internal Access

    1. The applicant must ensure that the design provides isolation 
from, or airplane electronic system security protection against, access 
by unauthorized sources internal to the airplane. The design must 
prevent inadvertent and malicious changes to, and all adverse impacts 
upon, airplane equipment, systems, networks, or other assets required 
for safe flight and operations.
    2. The applicant must establish appropriate procedures to allow the 
operator to ensure that continued airworthiness of the airplane is 
maintained, including all post-type-certification modifications that 
may have an impact on the approved electronic system security 
safeguards.

[[Page 63847]]

    Issued in Renton, Washington, on September 6, 2013.
Jeffrey E. Duven,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2013-24987 Filed 10-24-13; 8:45 am]
BILLING CODE 4910-13-P
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