Federal Register / Vol. 78, No. 173 / Friday, September 6, 2013 / Proposed Rules 54791 

telephone (202) 267–9688; email 

Ida.Klepper@faa.gov. 

SUPPLEMENTARY INFORMATION: See the 

‘‘Additional Information’’ section for 

information on how to comment on this 

proposal and how the FAA will handle 

comments received. The ‘‘Additional 

Information’’ section also contains 

related information about the docket. In 

addition, there is information on 

obtaining copies of related rulemaking 

documents. 

Background 

On June 11, 2013, the FAA issued 

Notice No. 1209, entitled ‘‘Revisions to 

Operational Requirements for the Use of 

Enhanced Flight Vision Systems (EFVS) 

and to Pilot Compartment View 

Requirements for Vision Systems’’ (78 

FR 34935). Comments to that document 

were to be received on or before 

September 9, 2013. 

Dassault-Aviation submitted an 

electronic request for an extension of 

the comment period from September 9, 

2013 to October 15, 2013. The petitioner 

requested this extension to allow 

adequate time to evaluate and prepare 

comments for the NPRM and two draft 

Advisory Circulars (ACs) which are 

directly related to the NPRM. On August 

13, 2013, the FAA published a Notice of 

Availability (78 FR 49318) making draft 

AC 90–106A, Enhanced Flight Vision 

Systems, and draft AC 20–167A, 

Airworthiness Approval of Enhanced 

Vision System, Synthetic Vision System, 

Combined Vision System, and 

Enhanced Flight Vision System 

Equipment, available for public 

comment. The comment period for both 

ACs closes on October 15, 2013. The 

petitioner asserted that comments to the 

NPRM should be linked with comments 

to both draft ACs, and that the comment 

period for the NPRM should therefore 

be extended to October 15, 2013 to 

match the comment period closing date 

for the draft ACs. The petitioner further 

asserted that doing so would provide 

them with adequate additional time to 

evaluate and provide comments for all 

three documents. The FAA agrees with 

the petitioner’s position and is granting 

an extension of the comment period to 

October 15, 2013. 

Extension of Comment Period 

In accordance with § 11.47(c) of title 

14, Code of Federal Regulations, the 

FAA has reviewed the petition made by 

Dassault-Aviation for extension of the 

comment period to the NPRM. This 

petitioner has shown a substantive 

interest in the proposed rule and good 

cause for the extension. The FAA has 

determined that extension of the 

comment period is consistent with the 

public interest, and that good cause 

exists for taking this action. 

Accordingly, the comment period for 

the NPRM Notice No. 1209 is extended 

until October 15, 2013. 

Additional Information 

A. Comments Invited 

The FAA invites interested persons to 

participate in this rulemaking by 

submitting written comments, data, or 

views. The agency also invites 

comments relating to the economic, 

environmental, energy, or federalism 

impacts that might result from adopting 

the proposals in this document. The 

most helpful comments reference a 

specific portion of the proposal, explain 

the reason for any recommended 

change, and include supporting data. To 

ensure the docket does not contain 

duplicate comments, commenters 

should send only one copy of written 

comments, or if comments are filed 

electronically, commenters should 

submit only one time. 

The FAA will file in the docket all 

comments it receives, as well as a report 

summarizing each substantive public 

contact with FAA personnel concerning 

this proposed rulemaking. Before acting 

on this proposal, the FAA will consider 

all comments it receives on or before the 

closing date for comments. The FAA 

will consider comments filed after the 

comment period has closed if it is 

possible to do so without incurring 

expense or delay. The agency may 

change this proposal in light of the 

comments it receives. 

B. Availability of Rulemaking 

Documents 

An electronic copy of rulemaking 

documents may be obtained from the 

Internet by— 

1. Searching the Federal eRulemaking 

Portal (http://www.regulations.gov); 

2. Visiting the FAA’s Regulations and 

Policies Web page at http://

www.faa.gov/regulations_policies or 

3. Accessing the Government Printing 

Office’s Web page at http://

www.gpo.gov/fdsys/. 

Copies may also be obtained by 

sending a request to the Federal 

Aviation Administration, Office of 

Rulemaking, ARM–1, 800 Independence 

Avenue SW., Washington, DC 20591, or 

by calling (202) 267–9680. Commenters 

must identify the docket or notice 

number of this rulemaking. 

All documents the FAA considered in 

developing this proposed rule, 

including economic analyses and 

technical reports, may be accessed from 

the Internet through the Federal 

eRulemaking Portal referenced in item 

(1) above. 

Issued in Washington, DC, on September 3, 

2013. 

Lirio Liu, 

Director, Office of Rulemaking. 

[FR Doc. 2013–21698 Filed 9–5–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 21 

Proposed Additional Airworthiness 

Design Standards: Advanced Avionics 

Under the Special Class (JAR–VLA) 

Regulations; Aquila Aviation by 

Excellence GmbH, Model AT01–100. 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Request for comments. 

SUMMARY: This document announces the 

issuance of the design criteria for the 

inclusion of advance avionics with 

intergrated electronic displays for the 

Aquila Aviation by Excellence GmbH 

AT01–100. These additional provisions 

are expansions of the existing JAR–VLA 

(Joint Aviation Requirements-Very Light 

Aircraft) and CS–VLA regulations as the 

current regulations do not adequetely 

address these types of systems. The 

current regulations only address 

traditional federated gauges. The 

European Aviation Safety Agency 

(EASA) has not expanded the VLA 

regulations for these types of 

installation on these types of airplanes 

through EASA special conditions or 

new regulations. These Federal Aviation 

Administration (FAA) design criteria are 

being proposed to help initiate 

standards for this type of airplane 

without being overburdensome and to 

encourage EASA to follow suit. 

DATES: Comments must be received on 

or before October 7, 2013. 

ADDRESSES: Send all comments to the 

Federal Aviation Administration (FAA), 

Standards Office, Small Airplane 

Directorate (ACE–112), Aircraft 

Certification Service, 901 Locust Street, 

Room 301, Kansas City, MO 64106. 

FOR FURTHER INFORMATION CONTACT: Mr. 

Doug Rudolph, Aerospace Engineer, 

Standards Office (ACE–112), Small 

Airplane Directorate, Aircraft 

Certification Service, FAA; telephone 

number (816) 329–4059, fax number 

(816) 329–4090, email at doug.rudolph@

faa.gov. 

SUPPLEMENTARY INFORMATION: Any 

person may obtain a copy of this 

information by contacting the person 

named above under FOR FURTHER

INFORMATION CONTACT. 


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54792 Federal Register / Vol. 78, No. 173 / Friday, September 6, 2013 / Proposed Rules 

Background 

The original certification of the 

aircraft was done under the provisions 

of 14 CFR 21.29, as a § 21.17(b), special 

class aircraft, JAR–VLA, using the 

requirements of JAR–VLA Amendment 

VLA/92/01 as developed by the Joint 

Aviation Authority, and under Title 14 

of the Code of Federal Regulations and 

two additional design criteria issued on 

September 2, 2003 (68 FR 56809). 

The regulation applicable to the 

Amended Type Certificate (TC) 

approval is § 21.17(b). This section 

describes the regulatory basis for the 

approval of JAR–VLA and CS–VLA 

aircraft as a special class. Policy on this 

subject includes AC 23–11B and AC 

21.17–3. 

FAA policy expressed in AC 23–11B 

and AC 21.17–3 limits JAR–VLA and 

CS–VLA aircraft approved under 

§ 21.17(b), to Day-VFR operations. 

Additionally, the FAA also published 

design criteria to allow expansion of the 

Aquila AT01–100 airplane to include 

Night-VFR as shown in NPRM 75 FR 

32576. In conjunction with the 

expansion to Night-VFR operations 

intergrated avionic displays are to be 

installed on the Aquila AT01–100 

airplane. 

EASA allowed the applicant to 

comply with CS–23 regulations for the 

intergrated avionic displays installed on 

the Aquila AT01–100 airplane and 

made them part of the EASA 

certification basis, but did not publish 

these additional requirements as Special 

Conditions as they did for the NightVFR expansion. The FAA’s system does 

not allow this type of additional 

requirements, such as 14 CFR part 23 

regulations, to be added to a special 

class, § 21.17(b) airplane without being 

publically noticed either through design 

criteria or expansion of the existing AC 

23–11B. This is the reason for this 

design criteria noticification. 

The FAA has concluded that it is 

acceptable to allow advanced 

intergrated avionic systems for 

certification on the Aquila Model 

AT01–100 under the special class 

amended TC project AT00651CE–A, 

provided the applicant complies with 

the below listed design criteria based on 

existing part 23 regulations at the 

described amendment levels. Revisions 

to AC 23–11B and AC 21.17–3 will be 

made to address future airplanes that 

wish to allow these installations. 

To satisfy the additional required 

design criteria for the Special Class 

(JAR–VLA) Regulations of § 21.17(b), 

Aquila Aviation by Excellence GmbH 

has agreed with the FAA to use the 14 

CFR part 23 regulations for their Model 

AT01–100, as shown on the FAA G–1 

Issue Paper. The applicable criteria for 

the installation of advanced avionic 

displays on the Aquila AT01–100 are as 

follows: 

14 CFR 23.867 at amendment 23–49, 

‘‘Electrical bonding and protection 

against lightning and static 

electricity’’ 

14 CFR 23.1307 at amendment 23–49, 

‘‘Miscellaneous Equipment’’ 

14 CFR 23.1311 at amendment 23–62, 

‘‘Electronic Display Instrument 

Systems’’ 

14 CFR 23.1321 at amendment 23–49, 

‘‘Arrangement and visibility’’ 

14 CFR 23.1359 at amendment 23–49, 

‘‘Electrical System Fire Protection’’. 

In addition to the above five regulations 

that will be used for design criteria, the 

FAA has also developed a methods of 

compliance (MOC) issue paper for VLA– 

1309 for this type of installation. 

Comments Invited 

We invite interested parties to submit 

comments on the proposed 

airworthiness standards to the address 

specified above. Commenters must 

identify the Aquila Model AT01–100 

and submit comments to the address 

specified above. The FAA will consider 

all communications received on or 

before the closing date before issuing 

the final acceptance. The proposed 

airworthiness design standards and 

comments received may be inspected at 

the FAA, Small Airplane Directorate, 

Aircraft Certification Service, Standards 

Office (ACE–110), 901 Locust Street, 

Room 301, Kansas City, MO 64106, 

between the hours of 7:30 a.m. and 4:00 

p.m. weekdays, except Federal holidays. 

Issued in Kansas City, Missouri on August 

5, 2013. 

Earl Lawrence, 

Manager, Small Airplane Directorate, Aircraft 

Certification Service. 

[FR Doc. 2013–20150 Filed 9–5–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2013–0770; Directorate 

Identifier 2011–SW–057–AD] 

RIN 2120–AA64 

Airworthiness Directives; Eurocopter 

France (Eurocopter) Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

Eurocopter Model EC225 LP helicopters. 

This proposed AD would add a new 

operating limitation that would require 

increasing the minimum density 

altitude flight limitation for helicopters 

without certain Eurocopter 

modifications installed. This proposed 

AD is prompted by a report that flights 

below a certain density altitude create 

oscillations in the main rotor which can 

transfer dynamic loads to the structure, 

the main gearbox (MGB), and the main 

servo-control inputs, which could result 

in subsequent loss of control of the 

helicopter. 

DATES: We must receive comments on 

this proposed AD by November 5, 2013. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Docket: Go to 

http://www.regulations.gov. Follow the 

online instructions for sending your 

comments electronically. 

• Fax: 202–493–2251. 

• Mail: Send comments to the U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue SE., Washington, 

DC 20590–0001. 

• Hand Delivery: Deliver to the 

‘‘Mail’’ address between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http://

www.regulations.gov or in person at the 

Docket Operations Office between 9 

a.m. and 5 p.m., Monday through 

Friday, except Federal holidays. The AD 

docket contains this proposed AD, the 

foreign authority’s AD, the economic 

evaluation, any comments received, and 

other information. The street address for 

the Docket Operations Office (telephone 

800–647–5527) is in the ADDRESSES

section. Comments will be available in 

the AD docket shortly after receipt. 

For service information identified in 

this proposed AD, contact American 

Eurocopter Corporation, 2701 N. Forum 

Drive, Grand Prairie, TX 75052; 

telephone (972) 641–0000 or (800) 232– 

0323; fax (972) 641–3775; or at http://

www.eurocopter.com/techpub. You may 

review the referenced service 

information at the FAA, Office of the 

Regional Counsel, Southwest Region, 

2601 Meacham Blvd., Room 663, Fort 

Worth, Texas 76137. 

FOR FURTHER INFORMATION CONTACT: Gary 

Roach, Aviation Safety Engineer, 

Regulations and Policy Group, 

Rotorcraft Directorate, FAA, 2601 


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