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

20818 

Vol. 79, No. 71 

Monday, April 14, 2014 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. FAA–2014–0240; Notice No. 25– 

14–02–SC] 

Special Conditions: Embraer S.A.; 

Model EMB–550 Airplane; Stowage 

Compartment Fire Protection 

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 

when compared to the state of 

technology and design envisioned in the 

airworthiness standards for transport 

category airplanes. This design feature 

is the installation of a stowage 

compartment in the lavatory to store 

passenger belongings. The isolation of 

this stowage compartment from the 

main cabin could hinder the ability of 

the flight crew to detect a fire. 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 May 14, 2014. 

ADDRESSES: Send comments identified 

by docket number FAA–2014–0240 

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 9 

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: 

Robert C. Jones, FAA, Propulsion and 

Mechanical Systems Branch, ANM–112, 

Transport Airplane Directorate, Aircraft 

Certification Service, 1601 Lind Avenue 

SW., Renton, Washington, 98057–3356; 

telephone (425) 227–1234; facsimile 

(425) 227–1149. 

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 May 14, 2009, Embraer S.A. 

applied for a type certificate for its new 

Model EMB–550 airplane. The Model 

EMB–550 airplane is the first of a new 

family of jet airplanes designed for 

corporate flight, fractional, charter, and 

private owner operations. The airplane 

has a configuration with low wing and 

T-tail empennage. The primary structure 

is metal with composite empennage and 

control surfaces. The Model EMB–550 

airplane is designed for 8 passengers, 

with a maximum of 12 passengers. It is 

equipped with two Honeywell AS907– 

3–1E medium bypass ratio turbofan 

engines mounted on aft fuselage pylons. 

Each engine produces approximately 

6,540 pounds of thrust for normal 

takeoff. The primary flight controls 

consist of hydraulically powered fly-bywire elevators, ailerons, and rudders 

controlled by the pilot or copilot 

sidestick. 

Type Certification Basis 

Under the provisions of 14 CFR 21.17, 

Embraer S.A. must show that the Model 

EMB–550 meets the applicable 

provisions of part 25, as amended by 

Amendments 25–1 through 25–127 

thereto. 

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 EMB–550 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 Model EMB–550 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 

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Federal Register / Vol. 79, No. 71 / Monday, April 14, 2014 / Proposed Rules 20819 

the type-certification basis under 

§ 21.17(a)(2). 

Novel or Unusual Design Features 

The Model EMB–550 will incorporate 

the following novel or unusual design 

features: A stowage compartment 

located in the lavatory designed to store 

passenger belongings. The stowage 

compartment may be isolated from the 

main passenger cabin by two doors 

(lavatory and stowage compartment 

doors), which could hinder the ability to 

detect smoke or fire. The installation of 

a stowage compartment in the lavatory 

is a novel and unusual design feature for 

which the applicable airworthiness 

regulations do not contain adequate or 

appropriate safety standards. 

Discussion 

Embraer did not classify the EMB–550 

stowage compartment in the aft part of 

the pressurized area as a Class B cargo 

compartment due to its relatively small 

volume of 37 cubic feet. The 

compartment has a door that is intended 

to be closed in all phases of flight but 

can be opened to allow passenger access 

during flight. The lavatory door must be 

kept open for takeoff and landing but 

will likely be kept closed in all other 

phases of flight. 

Due to the facts that the stowage 

compartment is not classified as a Class 

B cargo compartment and may be 

isolated from the main cabin by two 

doors during flight, and considering that 

it will be used to store passenger 

belongings, existing requirements for 

stowage compartments are not adequate 

to address fire protection concerns. The 

isolation characteristics and the 

possibility of storing items that may 

start a fire create the potential for an 

undetected fire event. 

Additional safety precautions are 

required to avoid a situation where a 

fire condition remains undetected in an 

isolated stowage compartment. The 

proposed additional safety standards in 

the stowage compartment compensate 

for the increased risk of an undetected 

fire. 

Applicability 

As discussed above, these special 

conditions are applicable to the Embraer 

Model EMB–550. Should Embraer S.A. 

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 one model 

of 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 Embraer 

S.A. Model EMB–550. 

1. Stowage Compartment Fire 

Protection. 

a. A means for fire detection that 

meets the provisions of § 25.858 is 

required regardless of the fact that the 

compartment is not classified as a cargo 

compartment per § 25.857 (only a 

‘‘stowage’’ compartment). A visual and 

audible indication of smoke detection 

that clearly identifies that smoke has 

been detected in the stowage 

compartment must be provided to the 

flight or cabin crew. 

b. In addition to the requirements of 

§ 25.851, at least one hand-held or 

manually-activated compartment fire 

extinguisher appropriate to the kinds of 

fires likely to occur and, if applicable, 

associated protective breathing 

equipment must be provided in the 

lavatory. 

c. Sufficient access must be provided 

to enable a crew member to effectively 

reach any part of the stowage 

compartment with the content of a 

hand-held fire extinguisher. 

d. When the access provisions are 

being used, no hazardous quantity of 

smoke, flames, or extinguishing agent 

will enter any compartment occupied by 

the crew or passengers. 

e. A liner must be provided that meets 

the requirements of § 25.855 at 

Amendment 25–60 for a Class B cargo 

compartment unless it can be shown 

that the material used to construct the 

stowage compartment meets the 

flammability requirements by a 60- 

second vertical test in lieu of 12-second 

vertical test and by presenting past test 

results of typical panels that meet the 

45-degree flame penetration test. 

Issued in Renton, Washington, on April 8, 

2014. 

John P. Piccola, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2014–08269 Filed 4–11–14; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2014–0227; Directorate 

Identifier 2013–NM–211–AD] 

RIN 2120–AA64 

Airworthiness Directives; Lockheed 

Martin Corporation/Lockheed Martin 

Aeronautics Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to supersede 

Airworthiness Directive (AD) 95–26–11, 

which applies to all Lockheed Martin 

Corporation/Lockheed Martin 

Aeronautics Company Model L–1011 

series airplanes. AD 95–26–11 currently 

requires inspections to detect cracking 

of the fittings that attach the aft pressure 

bulkhead to the fuselage stringers, 

inspections to detect cracking of the 

fittings and of the splice tab of the aft 

pressure bulkhead, and corrective 

actions if necessary. Since we issued AD 

95–26–11, we have determined that the 

fittings at stringer attachments to the 

upper region of the aft pressure 

bulkhead are subject to widespread 

fatigue damage (WFD), which could 

result in cracking in the aft pressure 

bulkhead. This proposed AD would 

reduce the compliance time; add 

inspections for cracking of certain aft 

fuselage skin panels; add a structural 

modification; and also add a post 

modification inspection program. We 

are proposing this AD to prevent 

simultaneous failure of multiple stringer 

end fittings through fatigue cracking at 

the aft pressure bulkhead, which could 

lead to rapid decompression of the 

airplane. 

DATES: We must receive comments on 

this proposed AD by May 29, 2014. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

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

instructions for submitting comments. 

• Fax: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

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