This section of the FEDERAL REGISTER

contains notices to the public of the proposed

issuance of rules and regulations. The

purpose of these notices is to give interested

persons an opportunity to participate in the

rule making prior to the adoption of the final

rules.

Proposed Rules Federal Register

69568 

Vol. 77, No. 224 

Tuesday, November 20, 2012 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. FAA–2012–1236; Notice No. 25– 

12–14–SC] 

Special Conditions: Bombardier 

Aerospace, Model BD–500–1A10 and 

BD–500–1A11 Airplanes; Sidestick 

Controllers 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed special 

conditions. 

SUMMARY: This action proposes special 

conditions for the Bombardier 

Aerospace Model BD–500–1A10 and 

BD–500–1A11 airplanes. These 

airplanes will have a novel or unusual 

design feature, specifically sidestick 

controllers designed to be operated with 

only one hand. The applicable 

airworthiness regulations do not contain 

adequate or appropriate safety standards 

for this design feature. These proposed 

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: Send your comments on or 

before January 4, 2013. 

ADDRESSES: Send comments identified 

by docket number [FAA–2012–1236] 

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: 

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 

425–227–1232. 

SUPPLEMENTARY INFORMATION: 

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 on or before the closing date for 

comments. We may change these special 

conditions based on the comments we 

receive. 

Background 

On December 10, 2009, Bombardier 

Aerospace applied for a type certificate 

for their new Model BD–500–1A10 and 

BD–500–1A11 airplanes. The Model 

BD–500–1A10 and BD–500–1A11 

airplanes are swept-wing monoplanes 

with pressurized cabins, and they share 

an identical supplier base and 

significant common design elements. 

The fuselages are aluminum alloy 

material, blended double-bubble 

fuselages, sized for nominal five-abreast 

seating. Each airplane’s powerplant 

includes two under-wing Pratt and 

Whitney PW1524G ultra-high bypass, 

geared turbofan engines. The flight 

controls are fly-by-wire flight with two 

passive/uncoupled sidesticks. Avionics 

include five landscape primary cockpit 

displays. The dimension of the aircraft 

encompasses a wingspan of 115 feet; 

height of 37.75 feet; and length of 

114.75 feet for the Model BD–500–1A10 

and length of 127 feet for the Model BD– 

500–1A11. Passenger capacity is 

designated as 110 for the Model BD– 

500–1A10 and 125 for the Model BD– 

500–1A11. Maximum takeoff weight is 

131,000 pounds for the Model BD–500– 

1A10 and 144,000 pounds for the Model 

BD–500–1A11. Maximum takeoff thrust 

is 21,000 pounds for the Model BD– 

500–1A10 and 23,300 pounds for the 

Model BD–500–1A11. The range is 

5,463 kilometres for both model 

airplanes. The maximum operating 

altitude is 41,000 feet for both model 

airplanes. 

Bombardier Model BD–500–1A10 and 

BD–500–1A11 airplanes will be 

equipped with a sidestick controller 

instead of a conventional control 

column and wheel. This kind of 

controller is designed for only one-hand 

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 sidestick 

controller. A special condition is 

necessary to specify the appropriate 

loading conditions for this kind of 

controller. 

Type Certification Basis 

Under the provisions of 14 CFR 21.17, 

Bombardier Aerospace must show that 

the Model BD–500–1A10 and BD–500– 

1A11 airplanes meet the applicable 

provisions of part 25, as amended by 

Amendments 25–1 through 25–129 

thereto. 

If the Administrator finds that the 

applicable airworthiness regulations 

(i.e., 14 CFR part 25) do not contain 

adequate or appropriate safety standards 


wreier-aviles on DSK5TPTVN1PROD with 
Federal Register / Vol. 77, No. 224 / Tuesday, November 20, 2012 / Proposed Rules 69569 

for the Bombardier Aerospace Model 

BD–500–1A10 and BD–500–1A11 

airplanes because of a novel or unusual 

design feature, special conditions are 

prescribed under the provisions of 

§ 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 Bombardier Aerospace 

Model BD–500–1A10 and BD–500– 

1A11 airplanes 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, in accordance 

with § 11.38, and they become part of 

the type-certification basis under 

§ 21.17(a)(2). 

Novel or Unusual Design Features 

The Bombardier Aerospace Model 

BD–500–1A10 and BD–500–1A11 

airplanes will incorporate the following 

novel or unusual design feature: A 

sidestick controller instead of a 

conventional control column and wheel. 

This kind of controller is designed for 

one-hand operation. 

Discussion 

The Bombardier Aerospace Model 

BD–500–1A10 and BD–500–1A11 

airplanes are equipped with a sidestick 

controller instead of a conventional 

wheel or control stick. This kind of 

controller is designed to be operated 

using only one hand. The requirement 

of 14 CFR 25.397(c), which defines limit 

pilot forces and torques for conventional 

wheel or stick controls, is not adequate 

for a sidestick controller, because pilot 

forces are applied to sidestick 

controllers with only the wrist, not 

arms. A special condition is necessary 

to specify the appropriate loading 

conditions for a sidestick controller. 

These proposed 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. 

Applicability 

As discussed above, these special 

conditions are applicable to the 

Bombardier Aerospace Model BD–500– 

1A10 and BD–500–1A11 airplanes. 

Should Bombardier Aerospace 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 

Bombardier Aerospace Model BD–500– 

1A10 and BD–500–1A11 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 Proposed Special Conditions 

Accordingly, the Federal Aviation 

Administration (FAA) proposes the 

following special conditions as part of 

the type certification basis for Model 

BD–500–1A10 and BD–500–1A11 

airplanes by Bombardier Aerospace: 

Limit Pilot Forces for Sidestick Control 

In lieu of the pilot forces specified in 

§ 25.397(c), for the Bombardier Model 

BD–500–1A10 and BD–500–1A11 

airplanes equipped with sidestick 

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 pounds 

force (lbf).

Nose Left 100 lbf. 

Nose down 200 lbf .... Nose Right 100 lbf. 

2. For all other components of the 

sidestick control assembly, 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 

November 14, 2012. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–28131 Filed 11–19–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. FAA–2012–1211; Notice No. 25– 

12–10–SC] 

Special Conditions: Embraer S.A., 

Model EMB–550 Airplanes; Flight 

Envelope Protection: Pitch and Roll 

Limiting Functions 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed special 

conditions. 

SUMMARY: This action proposes special 

conditions for the Embraer S.A. Model 

EMB–550 airplane. This airplane will 

have a novel or unusual design feature 

associated with pitch and roll limiting 

functions, specifically an electronic 

flight control system which contains flyby-wire control laws, including 

envelope protections. The applicable 

airworthiness regulations do not contain 

adequate or appropriate safety standards 

for this design feature. These proposed 

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: Send your comments on or 

before January 4, 2013. 

ADDRESSES: Send comments identified 

by docket number FAA–2012–1211 

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. 


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