Federal Register / Vol. 79, No. 191 / Thursday, October 2, 2014 / Rules and Regulations 59431 

within the fuselage pressure boundary, 

or that form part of the fuselage pressure 

boundary 

K = 1.5 for the inboard and outboard loading 

conditions for those parts of fuel tanks 

outside the fuselage pressure boundary 

K = 6 for the downward loading condition 

K = 3 for the upward loading condition 

(2) For those parts of wing fuel tanks 

near the fuselage or near the engines, 

the greater of the fuel pressures 

resulting from paragraphs (d)(2)(i) or 

(d)(2)(ii) of this section must be used: 

(i) The fuel pressures resulting from 

paragraph (d)(1) of this section, and 

(ii) The lesser of the two following 

conditions: 

(A) Fuel pressures resulting from the 

accelerations specified in § 25.561(b)(3) 

considering the fuel tank full of fuel at 

maximum fuel density. Fuel pressures 

based on the 9.0g forward acceleration 

may be calculated using the fuel static 

head equal to the streamwise local 

chord of the tank. For inboard and 

outboard conditions, an acceleration of 

1.5g may be used in lieu of 3.0g as 

specified in § 25.561(b)(3). 

(B) Fuel pressures resulting from the 

accelerations as specified in 

§ 25.561(b)(3) considering a fuel volume 

beyond 85 percent of the maximum 

permissible volume in each tank using 

the static head associated with the 85 

percent fuel level. A typical density of 

the appropriate fuel may be used. For 

inboard and outboard conditions, an 

acceleration of 1.5g may be used in lieu 

of 3.0g as specified in § 25.561(b)(3). 

(3) Fuel tank internal barriers and 

baffles may be considered as solid 

boundaries if shown to be effective in 

limiting fuel flow. 

(4) For each fuel tank and 

surrounding airframe structure, the 

effects of crushing and scraping actions 

with the ground must not cause the 

spillage of enough fuel, or generate 

temperatures that would constitute a 

fire hazard under the conditions 

specified in § 25.721(b). 

(5) Fuel tank installations must be 

such that the tanks will not rupture as 

a result of the landing gear or an engine 

pylon or engine mount tearing away as 

specified in § 25.721(a) and (c). 

* * * * * 

■ 8. Revise § 25.994 to read as follows: 

§ 25.994 Fuel system components. 

Fuel system components in an engine 

nacelle or in the fuselage must be 

protected from damage that could result 

in spillage of enough fuel to constitute 

a fire hazard as a result of a wheels-up 

landing on a paved runway under each 

of the conditions prescribed in 

§ 25.721(b). 

Issued under authority provided by 49 

U.S.C. 106(f), 44701(a), and 44703 in 

Washington, DC, on September 24, 2014. 

Michael P. Huerta, 

Administrator. 

[FR Doc. 2014–23373 Filed 10–1–14; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. FAA–2014–0366; Special 

Conditions No. 25–564–SC] 

Special Conditions: Embraer S.A.; 

Model EMB–550 Airplane; Flight 

Envelope Protection: High Incidence 

Protection System 

Correction 

In rule document 2014–20893 

appearing on pages 52165 through 

52169 in the issue of Wednesday, 

September 3, 2014, make the following 

corrections: 

1. On page 52169, in the first column, 

the 27th line from the bottom should 

read: ‘‘In lieu of § 25.107(c) and (g) we 

propose the following requirements, 

with additional sections (c’) and (g’):’’ 

2. On page 52169, in the first column, 

the 11th line from the bottom should 

read: ‘‘(c’) In icing conditions with the 

‘‘takeoff ice’’ accretion defined in part 

25, appendix C, V2 may not be less 

than—’’ 

3. On page 52169, in the second 

column, the eighth line from the top 

should read: ‘‘(g’) In icing conditions 

with the ‘‘final takeoff ice’’ accretion 

defined in part 25, appendix C, VFTO, 

may not be less than—’’ 

[FR Doc. C1–2014–20893 Filed 10–1–14; 8:45 am] 

BILLING CODE 1505–01–P 

DEPARTMENT OF HOMELAND 

SECURITY 

Coast Guard 

33 CFR Part 117 

[Docket No. USCG–2014–0848] 

Drawbridge Operation Regulation; 

Sacramento River, Rio Vista, CA 

AGENCY: Coast Guard, DHS. 

ACTION: Notice of deviation from 

drawbridge regulation. 

SUMMARY: The Coast Guard has issued a 

temporary deviation from the operating 

schedule that governs the Rio Vista 

Drawbridge across Sacramento River, 

mile 12.8, at Rio Vista, CA. The 

deviation is necessary to allow the 

bridge owner to make necessary bridge 

maintenance repairs. This deviation 

allows the bridge to open on four hours 

advance notice during the deviation 

period. 

DATES: This deviation is effective 

without actual notice from October 2, 

2014 through 6 a.m. on October 17, 

2014. For the purposes of enforcement, 

actual notice will be used from 9 p.m. 

on September 22, 2014, until October 2, 

2014. 

ADDRESSES: The docket for this 

deviation, [USCG–2014–0848], is 

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

Type the docket number in the 

‘‘SEARCH’’ box and click ‘‘SEARCH.’’ 

Click on Open Docket Folder on the line 

associated with this deviation. You may 

also visit the Docket Management 

Facility in Room W12–140 on the 

ground floor of the Department of 

Transportation West Building, 1200 

New Jersey Avenue SE., Washington, 

DC 20590, between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal 

holidays. 

FOR FURTHER INFORMATION CONTACT: If 

you have questions on this temporary 

deviation, call or email David H. 

Sulouff, Chief, Bridge Section, Eleventh 

Coast Guard District; telephone 510– 

437–3516, email David.H.Sulouff@

uscg.mil. If you have questions on 

viewing the docket, call Cheryl Collins, 

Program Manager, Docket Operations, 

telephone 202–366–9826. 

SUPPLEMENTARY INFORMATION: The 

California Department of Transportation 

has requested a temporary change to the 

operation of the Rio Vista Drawbridge, 

mile 12.8, over Sacramento River, at Rio 

Vista, CA. The drawbridge navigation 

span provides 18 feet vertical clearance 

above Mean High Water in the closedto-navigation position. In accordance 

with 33 CFR 117.5, the draw opens on 

signal. Navigation on the waterway is 

commercial, search and rescue, law 

enforcement, and recreational. 

A four-hour advance notice for 

openings is required from 9 p.m. to 6 

a.m. daily, from September 22, 2014 to 

October 17, 2014, to allow the bridge 

owner to repair the concrete vertical lift 

span deck. This temporary deviation has 

been coordinated with the waterway 

users. No objections to the temporary 

deviation were raised. 

Vessels able to pass through the 

bridge in the closed position may do so 

at any time. The bridge will be able to 

open for emergencies with four hour 

advance notice. No alternative route is 

available for navigation. The Coast 

Guard will inform waterway users of 


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