### 43240 Federal Register / Vol. 79, No. 143 / Friday, July 25, 2014 / Rules and Regulations

for the safe operation of the airplane. This 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, 14CFR regulations, and current systemsafety 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 are to ensure that the security of airplane systems and networks is not compromised by unauthorized wired or wireless internal access.

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.

Discussion of Comments

Notice of proposed special conditions no. 25–13–20–SC for Airbus Model A350–900 airplanes was published in the Federal Register on December 17, 2013 (78 FR 76252). No comments were received, and the special conditions are adopted as proposed. Applicability

As discussed above, these special conditions are applicable to Airbus Model A350–900 airplanes. Should Airbus apply later 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 Airbus Model A350–900 airplanes. It is not a rule of general applicability. 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 specialconditions are issued as part of the typecertification basis for Airbus Model A350–900 airplanes. Isolation of the 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 ismaintained, including all post-typecertification modifications that may have an impact on the approved electronic system security safeguards.

Issued in Renton, Washington, on July 9,
2014. Jeffrey E. Duven, Manager, Transport Airplane Directorate, Aircraft Certification Service.
[FR Doc. 2014–17576 Filed 7–24–14; 8:45 am]

**BILLING CODE 4910–13–P**

**DEPARTMENT OF TRANSPORTATION**

**Federal Aviation Administration**

**14 CFR Part 91**

**[Docket No. FAA–2014–0396]**

**Interpretation of the Special Rule for Model Aircraft** 

**AGENCY :**  Federal Aviation Administration (FAA), DOT.

**ACTION :**  Notice of interpretation with request for comment; Extension of comment period.

**SUMMARY :**  The FAA is extending the comment period on its Interpretation of the Special Rule for Model Aircraft that was published on June 25, 2014.

**DATES :**  The comment period for the notice of interpretation published June 25, 2014 (79 FR 36172), is extended. Comments must be received on or before September 23, 2014.

**ADDRESSES :**  You may send comments identified by docket number FAA– 2014–0396 using any of the following methods:

• Federal eRulemaking 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, 1200 New Jersey Avenue SE., West Building Ground Floor, Room W12–140, West Building Ground Floor, Washington, DC 20590–
0001.

• Hand Delivery: 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: (202) 493–2251.

**FOR FURTHER INFORMATION CONTACT :**  Dean E. Griffith, Attorney, International Law, Legislation, and Regulations Division, Office of the Chief Counsel, Federal Aviation Administration, 800 Independence Avenue SW., Washington, DC 20591; telephone (202) 267–3073; email: dean.griffith@faa.gov.

**SUPPLEMENTARY INFORMATION :**  The FAA published a notice of interpretation with request for comment in the Federal Register on June 25, 2014 (79 FR 36172) that discussed the FAA’s interpretation of the Special Rule for Model Aircraft established in section 336 of the FAA Modernization and Reform Act of 2012. The notice requested that interested parties submit written comments by July 25, 2014.

On July 16, 2014, the Academy of Model Aeronautics submitted a request to extend the comment period by 60 days, citing the need to ‘‘educate the aeromodeling community, clarify the issues, and respond to questions regarding the impact that the interpretive rule has on various aspects of the modeling activity.’’ The FAA agrees that additional time for the submission of comments would be helpful, and therefore has decided to extend the comment period until September 23, 2014. The FAA expects that the additional time for comments will allow the affected community to prepare meaningful comments which will help the FAA to determine what clarifications to the interpretation may be necessary.

Issued in Washington, DC, on July 22,

2014. Mark W. Bury, Assistant Chief Counsel for International Law, Legislation, and Regulations.
[FR Doc. 2014–17528 Filed 7–24–14; 8:45 am]

**BILLING CODE 4910–13–P**