Federal Register / Vol. 79, No. 113 / Thursday, June 12, 2014 / Rules and Regulations 33673 

system in the shoulder belt does not 

have to be considered. 

10. It must be shown that the airbag 

system in the shoulder belt will not 

release hazardous quantities of gas or 

particulate matter into the cabin. 

11. The airbag system in the shoulderbelt installation must be protected from 

the effects of fire such that no hazard to 

occupants will result. 

12. A means must be available for a 

crewmember to verify the integrity of 

the airbag system in the shoulder-belt 

activation system prior to each flight, or 

it must be demonstrated to reliably 

operate between inspection intervals. 

The FAA considers that the loss of the 

airbag-system deployment function 

alone (i.e., independent of the 

conditional event that requires the 

airbag-system deployment) is a majorfailure condition. 

13. The inflatable material may not 

have an average burn rate of greater than 

2.5 inches per minute when tested, 

using the horizontal flammability test 

defined in part 25, appendix F, part I, 

paragraph (b)(5). 

14. The airbag system in the shoulder 

belt, once deployed, must not adversely 

affect the emergency-lighting system 

(i.e., block floor proximity lights to the 

extent that the lights no longer meet 

their intended function). 

Issued in Renton, Washington, on May 12, 

2014. 

Jeffrey E. Duven, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2014–13663 Filed 6–11–14; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. FAA–2013–0896; Special 

Conditions No. 25–529–SC] 

Special Conditions: Airbus Model 

A350–900 Series, Limit Pilot Force 

Because of Side Stick Controller 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final special conditions. 

SUMMARY: These special conditions are 

issued for Airbus Model A350–900 

series airplanes. These airplanes will 

have a novel or unusual design feature 

associated with side stick controllers 

which require limited pilot force 

because they are operated by only one 

hand. 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: Effective July 14, 2014. 

FOR FURTHER INFORMATION CONTACT: 

Todd Martin, FAA, Airframe and Cabin 

Safety Branch, ANM–115, Transport 

Airplane Directorate, Aircraft 

Certification Service, 1601 Lind Avenue 

SW., Renton, Washington, 98057–3356; 

telephone (425) 227–1178; facsimile 

(425) 227–1320. 

SUPPLEMENTARY INFORMATION: 

Background 

On August 25, 2008, Airbus applied 

for a type certificate for their new Model 

A350–900 series airplane. Later, Airbus 

requested and the FAA approved an 

extension to the application for FAA 

type certification to June 28, 2009. The 

Model A350–900 series airplane has a 

conventional layout with twin wingmounted Rolls-Royce Trent XWB 

engines. It features a twin aisle 9-abreast 

economy class layout, and 

accommodates side-by-side placement 

of LD–3 containers in the cargo 

compartment. The basic Model A350– 

900 series configuration will 

accommodate 315 passengers in a 

standard two-class arrangement. The 

design cruise speed is Mach 0.85 with 

a Maximum Take-Off Weight of 602,000 

lbs. 

The Airbus Model A350–900 series 

airplane is equipped with two side stick 

controllers instead of the conventional 

control columns and wheels. This kind 

of controller is designed for only onehand operation. The requirement of 

Title 14, Code of Federal Regulations 

(14 CFR) 25.397(c), which defines limit 

pilot forces and torques for conventional 

wheel or stick controls, is not adequate 

for a side stick controller. Special 

conditions are necessary to specify the 

appropriate loading conditions for this 

kind of controller. 

Type Certification Basis 

Under Title 14, Code of Federal 

Regulations (14 CFR) 21.17, Airbus must 

show that the Model A350–900 series 

meets the applicable provisions of 14 

CFR part 25, as amended by 

Amendments 25–1 through 25–129. 

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 A350–900 series because 

of a novel or unusual design feature, 

special conditions are prescribed under 

§ 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 § 21.101. 

In addition to the applicable 

airworthiness regulations and special 

conditions, the Model A350–900 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. The 

FAA must issue a finding of regulatory 

adequacy under § 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 Airbus Model A350–900 series 

airplane will incorporate the following 

novel or unusual design feature: a side 

stick controller for only one-hand 

operation by wrist and not by arms. 

Discussion 

Special conditions for Airbus side 

stick controllers have been developed 

and applied during previous Airbus 

certification programs. These special 

conditions are also appropriate for the 

Model A350–900 series side stick 

controller. 

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. 25–13–27–SC for Airbus Model 

A350–900 series airplanes was 

published in the Federal Register on 

December 17, 2013 (78 FR 76248). No 

comments were received, and the 

special conditions are adopted as 

proposed. 

Applicability 

As discussed above, these special 

conditions apply to 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 special 

conditions would apply to that model as 

well. 


rmajette on DSK2TPTVN1PROD with RULES
33674 Federal Register / Vol. 79, No. 113 / Thursday, June 12, 2014 / Rules and Regulations 

Conclusion 

This action affects only certain novel 

or unusual design features on the Airbus 

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 

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 Airbus Model 

A350–900 series airplanes in lieu of 

§ 25.397(c), which are identical to A320, 

A340, and A380 special conditions on 

the same subject: 

For the Airbus Model A350–900 

series airplane equipped with stick 

controls designed for forces to be 

applied by one wrist and not arms, the 

limit pilot forces are as follows: 

1. For all components between and 

including the handle and its control 

stops. 

Pitch Roll 

Nose up 200 lbf. ....... Nose left 100 lbf. 

2. For all other components of the 

side stick control assembly, but 

excluding the internal components of 

the electrical sensor assemblies, to avoid 

damage as a result of an in-flight jam. 

Pitch Roll 

Nose up 125 lbf. ....... Nose left 50 lbf. 

Nose down 125 lbf. ... Nose right 50 lbf. 

Issued in Renton, Washington, on: April 

22, 2014. 

Jeffrey E. Duven, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2014–13666 Filed 6–11–14; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. FAA–2013–0890; Special 

Conditions No. 25–524–SC] 

Special Conditions: Airbus Model 

A350–900 Series Airplane; Ground 

Pivoting Loads 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final special conditions. 

SUMMARY: These special conditions are 

issued for Airbus Model A350–900 

Series airplanes. These airplanes will 

have a novel or unusual design 

feature(s) associated with a braking 

system that affects the airplane’s 

pivoting behavior. 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: Effective July 14, 2014. 

FOR FURTHER INFORMATION CONTACT: 

Todd Martin, FAA, Airframe/Cabin 

Safety, ANM–115, Transport Airplane 

Directorate, Aircraft Certification 

Service, 1601 Lind Avenue SW., 

Renton, Washington, 98057–3356; 

telephone (425) 227–1178; facsimile 

(425) 227–1320. 

SUPPLEMENTARY INFORMATION: 

Background 

On August 25, 2008, Airbus applied 

for a type certificate for their new Model 

A350–900 series airplane. Later, Airbus 

requested and the FAA approved an 

extension to the application for FAA 

type certification to June 28, 2009. The 

Model A350–900 series airplane has a 

conventional layout with twin wingmounted Rolls-Royce Trent engines. It 

features a twin aisle 9-abreast economy 

class layout, and accommodates side-byside placement of LD–3 containers in 

the cargo compartment. The basic 

Model A350–900 series configuration 

will accommodate 315 passengers in a 

standard two-class arrangement. The 

design cruise speed is Mach 0.85 with 

a Maximum Take-Off Weight of 602,000 

lbs. Airbus proposes the Model A350– 

900 series airplane to be certified for 

extended operations (ETOPS) beyond 

180 minutes at entry into service for up 

to a 420-minute maximum diversion 

time. 

The Airbus Model A350–900 series 

airplane is equipped with a braking 

system that affects the airplane’s 

pivoting behavior. During pivoting the 

braking system inhibits braking on some 

wheels. Title 14 Code of Federal 

Regulations (14 CFR) 25.503 and 

European Aviation Safety Agency 

(EASA) Certification Specification (CS) 

section 25.503, each specify limit loads 

due to pivoting, however, system effects 

are not taken into account. 

Type Certification Basis 

Under Title 14, Code of Federal 

Regulations (14 CFR) 21.17, Airbus must 

show that the Model A350–900 series 

meets the applicable provisions of 14 

CFR part 25, as amended by 

Amendments 25–1 through 25–129. 

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 A350–900 series because 

of a novel or unusual design feature, 

special conditions are prescribed under 

§ 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 § 21.101. 

In addition to the applicable 

airworthiness regulations and special 

conditions, the Model A350–900 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 § 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 Airbus Model A350–900 series 

airplane will incorporate the following 

novel or unusual design features: a 

braking system that affects the airplane’s 

pivoting behavior. 

Discussion 

Within the Aviation Rulemaking 

Advisory Committee, the Loads and 

Dynamics Harmonization Working 

Group developed criteria for 

determining pivoting loads. The group 

recommended, for airplanes with more 

than two main landing gear units, a 

rational pivoting maneuver that takes 

into account the effects of the braking 

system and tire characteristics, in lieu of 

the current requirement. Although the 


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