67324 Federal Register / Vol. 78, No. 218 / Tuesday, November 12, 2013 / Proposed Rules 

series 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 

section 611 of Public Law 92–574, the 

‘‘Noise Control Act of 1972.’’ 

The FAA issues special conditions, as 

defined in 14 CFR 11.19, under § 11.38, 

and they become part of the typecertification basis under § 21.17(a)(2). 

Novel or Unusual Design Features 

The Model A350–900 series airplane 

will incorporate the following novel or 

unusual design features: Engines with 

large, bypass fans capable of producing 

much higher failure loads than previous 

engines. The Model A350–900 will 

therefore require additional dynamic 

loads analyses to assess the most severe 

engine failure events. The loads 

resulting from these conditions would 

be considered as ultimate loads, with an 

additional safety factor applied to the 

airframe supporting structure. 

Discussion 

The size, configuration, and failure 

modes of jet engines has changed 

considerably from those envisioned by 

Title 14 Code of Federal Regulations (14 

CFR) 25.361(b) when the engine seizure 

requirement was first adopted. Engines 

have become larger and are now 

designed with large bypass fans capable 

of producing much higher failure loads. 

Relative to the engine configurations 

that existed when the rule was 

developed in 1957, the present 

generation of engines are sufficiently 

different and novel to justify special 

conditions for Model A350–900 series 

airplanes. Service history has shown 

that the engine failure events that tend 

to cause the most severe loads are fan 

blade failures and these events occur 

much less frequently than the typical 

‘‘limit’’ load condition. 

The regulatory authorities and 

industry developed a standardized 

requirement in the Aviation Rulemaking 

Advisory Committee (ARAC) forum. 

The technical aspects of this 

requirement have been agreed and have 

been accepted by the ARAC Loads and 

Dynamics Harmonization Working 

Group. The proposed special condition 

reflects the ARAC recommendation and 

is essentially harmonized with the 

corresponding EASA Certification 

Specifications (CS) 25. In addition, the 

ARAC recommendation includes 

corresponding advisory material that is 

incorporated in CS–25. This advisory 

material is considered an acceptable 

means of compliance to the proposed 

special conditions. 

Applicability 

As discussed above, these proposed 

special conditions apply to the Airbus 

Model A350–900 series 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 proposed 

special conditions would apply to that 

model as well. 

Conclusion 

This action affects only certain novel 

or unusual design features on the Model 

A350–900 series 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 

proposed special conditions is as 

follows: 

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

44702, 44704. 

The Proposed Special Conditions 

Accordingly, the Federal Aviation 

Administration (FAA) proposes the 

following special conditions as part of 

the type certification basis for Airbus 

Model A350–900 series airplanes. 

In lieu of § 25.361(b) the following 

special condition is proposed: 

1. For turbine engine installations, the 

engine mounts, pylons, and adjacent 

supporting airframe structure must be 

designed to withstand 1g level flight 

loads acting simultaneously with the 

maximum limit torque loads imposed 

by each of the following: 

a. sudden engine deceleration due to 

a malfunction that could result in a 

temporary loss of power or thrust, 

b. the maximum acceleration of the 

engine. 

2. For auxiliary power unit 

installations, the power unit mounts 

and adjacent supporting airframe 

structure must be designed to withstand 

1g level flight loads acting 

simultaneously with the maximum limit 

torque loads imposed by each of the 

following: 

a. sudden auxiliary power unit 

deceleration due to malfunction or 

structural failure; and 

b. the maximum acceleration of the 

power unit. 

3. For engine supporting structure, an 

ultimate loading condition must be 

considered that combines 1g flight loads 

with the transient dynamic loads 

resulting from: 

a. the loss of any fan, compressor, or 

turbine blade; and separately 

b. where applicable to a specific 

engine design, any other engine 

structural failure that results in higher 

loads. 

4. The ultimate loads developed from 

the conditions specified in paragraphs 

3.a. and 3.b. are to be multiplied by a 

factor of 1.0 when applied to engine 

mounts and pylons and multiplied by a 

factor of 1.25 when applied to adjacent 

supporting airframe structure. 

5. The airplane must be capable of 

continued safe flight considering the 

aerodynamic effects on controllability 

due to any permanent deformation that 

results from the conditions specified in 

3. 

Issued in Renton, Washington, on October 

22, 2013. 

Stephen P. Boyd, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2013–26911 Filed 11–8–13; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2013–0174; Airspace 

Docket No. 13–AGL–10] 

Proposed Amendment of Class E 

Airspace; Lapeer, MI 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This action proposes to 

amend Class E airspace at Lapeer, MI. 

Additional controlled airspace is 

necessary to accommodate amended 

Standard Instrument Approach 

Procedures (SIAP) at Dupont—Lapeer 

Airport. The FAA is taking this action 

to enhance the safety and management 

of Instrument Flight Rules (IFR) 

operations for SIAPs at the airport. 

Geographic coordinates would also be 

updated. 

DATES: Comments must be received on 

or before December 27, 2013. 

ADDRESSES: Send comments on this 

proposal to the U.S. Department of 

Transportation, Docket Operations, 1200 

New Jersey Avenue SE., West Building 

Ground Floor, Room W12–140, 

Washington, DC 20590–0001. You must 

identify the docket number FAA–2013– 

0174/Airspace Docket No. 13–AGL–10, 

at the beginning of your comments. You 

may also submit comments through the 

Internet at http://www.regulations.gov. 

You may review the public docket 

containing the proposal, any comments 

received, and any final disposition in 

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Federal Register / Vol. 78, No. 218 / Tuesday, November 12, 2013 / Proposed Rules 67325 

person in the Dockets Office between 

9:00 a.m. and 5:00 p.m., Monday 

through Friday, except Federal holidays. 

The Docket Office (telephone 1–800– 

647–5527), is on the ground floor of the 

building at the above address. 

FOR FURTHER INFORMATION CONTACT: 

Scott Enander, Central Service Center, 

Operations Support Group, Federal 

Aviation Administration, Southwest 

Region, 2601 Meacham Blvd., Fort 

Worth, TX 76137; telephone: 817–321– 

7716. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

Interested parties are invited to 

participate in this proposed rulemaking 

by submitting such written data, views, 

or arguments, as they may desire. 

Comments that provide the factual basis 

supporting the views and suggestions 

presented are particularly helpful in 

developing reasoned regulatory 

decisions on the proposal. Comments 

are specifically invited on the overall 

regulatory, aeronautical, economic, 

environmental, and energy-related 

aspects of the proposal. 

Communications should identify both 

docket numbers and be submitted in 

triplicate to the address listed above. 

Commenters wishing the FAA to 

acknowledge receipt of their comments 

on this notice must submit with those 

comments a self-addressed, stamped 

postcard on which the following 

statement is made: ‘‘Comments to 

Docket No. FAA–2013–0174/Airspace 

Docket No. 13–AGL–10.’’ The postcard 

will be date/time stamped and returned 

to the commenter. 

Availability of NPRMs 

An electronic copy of this document 

may be downloaded through the 

Internet at http://www.regulations.gov. 

Recently published rulemaking 

documents can also be accessed through 

the FAA’s Web page at http://

www.faa.gov/airports_airtraffic/air_

traffic/publications/airspace_

amendments/. 

You may review the public docket 

containing the proposal, any comments 

received and any final disposition in 

person in the Dockets Office (see 

ADDRESSES section for address and 

phone number) between 9:00 a.m. and 

5:00 p.m., Monday through Friday, 

except Federal holidays. An informal 

docket may also be examined during 

normal business hours at the office of 

the Central Service Center, 2601 

Meacham Blvd., Fort Worth, TX 76137. 

Persons interested in being placed on 

a mailing list for future NPRMs should 

contact the FAA’s Office of Rulemaking 

(202) 267–9677, to request a copy of 

Advisory Circular No. 11–2A, Notice of 

Proposed Rulemaking Distribution 

System, which describes the application 

procedure. 

The Proposal 

This action proposes to amend Title 

14, Code of Federal Regulations (14 

CFR), Part 71 by amending Class E 

airspace extending upward from 700 

feet above the surface to accommodate 

amended standard instrument approach 

procedures at Dupont—Lapeer Airport, 

Lapeer, MI. Accordingly, a segment 

would extend from the 6.5-mile radius 

of the airport to 10.9 miles north of the 

airport, to retain the safety and 

management of IFR aircraft in Class E 

airspace to/from the en route 

environment. Geographic coordinates of 

the airport would also be updated to 

coincide with the FAA’s aeronautical 

database. 

Class E airspace areas are published 

in Paragraph 6005 of FAA Order 

7400.9X, dated August 7, 2013 and 

effective September 15, 2013, which is 

incorporated by reference in 14 CFR 

71.1. The Class E airspace designation 

listed in this document would be 

published subsequently in the Order. 

The FAA has determined that this 

proposed regulation only involves an 

established body of technical 

regulations for which frequent and 

routine amendments are necessary to 

keep them operationally current. It, 

therefore, (1) is not a ‘‘significant 

regulatory action’’ under Executive 

Order 12866; (2) is not a ‘‘significant 

rule’’ under DOT Regulatory Policies 

and Procedures (44 FR 11034; February 

26, 1979); and (3) does not warrant 

preparation of a Regulatory Evaluation 

as the anticipated impact is so minimal. 

Since this is a routine matter that will 

only affect air traffic procedures and air 

navigation, it is certified that this rule, 

when promulgated, will not have a 

significant economic impact on a 

substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

The FAA’s authority to issue rules 

regarding aviation safety is found in 

Title 49 of the U.S. Code. Subtitle 1, 

Section 106 describes the authority of 

the FAA Administrator. Subtitle VII, 

Aviation Programs, describes in more 

detail the scope of the agency’s 

authority. This rulemaking is 

promulgated under the authority 

described in Subtitle VII, Part A, 

Subpart I, Section 40103. Under that 

section, the FAA is charged with 

prescribing regulations to assign the use 

of airspace necessary to ensure the 

safety of aircraft and the efficient use of 

airspace. This regulation is within the 

scope of that authority as it would 

amend controlled airspace at Dupont— 

Lapeer Airport, Lapeer, MI. 

Environmental Review 

This proposal will be subject to an 

environmental analysis in accordance 

with FAA Order 1050.1E, 

‘‘Environmental Impacts: Policies and 

Procedures’’ prior to any FAA final 

regulatory action. 

List of Subjects in 14 CFR Part 71 

Airspace, Incorporation by reference, 

Navigation (air). 

The Proposed Amendment 

In consideration of the foregoing, the 

Federal Aviation Administration 

proposes to amend 14 CFR part 71 as 

follows: 

PART 71—DESIGNATION OF CLASS A, 

B, C, D, AND E AIRSPACE AREAS; AIR 

TRAFFIC SERVICE ROUTES; AND 

REPORTING POINTS 

■ 1. The authority citation for part 71 

continues to read as follows: 

Authority: 49 U.S.C. 106(g); 40103, 40113, 

40120; E.O. 10854, 24 FR 9565, 3 CFR, 1959– 

1963 Comp., p. 389. 

§ 71.1 [Amended] 

■ 2. The incorporation by reference in 

14 CFR 71.1 of FAA Order 7400.9X, 

Airspace Designations and Reporting 

Points, dated August 8, 2013, and 

effective September 15, 2013, is 

amended as follows: 

Paragraph 6005 Class E Airspace areas 

extending upward from 700 feet or more 

above the surface of the earth. 

* * * * * 

AGL MI E5 Lapeer, MI [Amended] 

Dupont—Lapeer Airport, MI 

(Lat. 43°03′59′′ N., long. 83°16′18′′ W.) 

That airspace extending upward from 700 

feet above the surface within a 6.5-mile 

radius of Dupont—Lapeer Airport, and 

within 2 miles each side of the 357° bearing 

from the airport extending from the 6.5-mile 

radius to 10.9 miles north of the airport. 

Issued in Fort Worth, TX, on October 25, 

2013. 

David P. Medina, 

Manager, Operations Support Group, ATO 

Central Service Center. 

[FR Doc. 2013–26888 Filed 11–8–13; 8:45 am] 

BILLING CODE 4901–13–P 

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