Federal Register / Vol. 73, No. 172 / Thursday, September 4, 2008 / Proposed Rules 51605 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in Subtitle VII, 

Part A, Subpart III, Section 44701, 

‘‘General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

We have determined that this 

proposed AD would not have federalism 

implications under Executive Order 

13132. This proposed AD would not 

have a substantial direct effect on the 

States, on the relationship between the 

national Government and the States, or 

on the distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that the proposed AD: 

1. Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866; 

2. Is not a ‘‘significant rule’’ under the 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979); and 

3. Would not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this proposed AD. You may get a copy 

of this summary at the address listed 

under ADDRESSES. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Safety. 

The Proposed Amendment 

Under the authority delegated to me 

by the Administrator, the Federal 

Aviation Administration proposes to 

amend 14 CFR part 39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

1. The authority citation for part 39 

continues to read as follows: 

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

§ 39.13 [Amended] 

2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

General Electric Company: Docket No. FAA–

2008–0827; Directorate Identifier 2008–

NE–26–AD. 

Comments Due Date 

(a) The Federal Aviation Administration 

(FAA) must receive comments on this 

airworthiness directive (AD) action by 

November 3, 2008. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to General Electric 

Company (GE) CF6–80A series turbofan 

engines with any of the following stage 1 

high-pressure turbine (HPT) rotor disk part 

numbers (P/Ns), installed: 

(1) 1380M69G01; 1380M69G02; 

1380M69G04; 1380M69G05; or 1380M69G06; 

or 

(2) 9234M67G12; 9234M67G13; 

9234M67G14; 9234M67G15; or 9234M67G16; 

or 

(3) 9362M58G04; or 

(4) 9367M45G01; 9367M45G03; 

9367M45G05; 9367M45G06; 9367M45G07; or 

9367M45G08. 

(d) These CF6–80A series turbofan engines 

are installed on, but not limited to, Airbus 

A310–200 series and Boeing 767–200 series 

airplanes. 

Unsafe Condition 

(e) This AD results from the FAA learning 

that those discs are susceptible to cracks 

developing in the bottoms of the dovetail 

slots. We are issuing this AD to prevent 

cracks developing in the bottoms of the 

dovetail slots that could propagate to a 

failure of the disk and cause an uncontained 

engine failure and damage to the airplane. 

Compliance 

(f) You are responsible for having the 

actions required by this AD performed within 

30 days after the effective date of this AD, 

unless the actions have already been done. 

(g) Remove from service HPT stage 1 rotor 

disks identified by P/N in paragraph (c) of 

this AD. 

Prohibition of HPT Stage 1 Rotor Disks 

(h) After the effective date of this AD, do 

not install any of the HPT stage 1 rotor disks, 

listed by P/N in paragraph (c) of this AD into 

any engine. 

Alternative Methods of Compliance 

(i) The Manager, Engine Certification 

Office, has the authority to approve 

alternative methods of compliance for this 

AD, if requested using the procedures found 

in 14 CFR 39.19. 

Related Information 

(j) Contact Tara Chaidez, Aerospace 

Engineer, Engine Certification Office, FAA, 

Engine and Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; e-mail: tara.chaidez@faa.gov; 

telephone: (781) 238–7773, fax: (781) 238–

7199, for more information about this AD. 

Issued in Burlington, Massachusetts, on 

August 28, 2008. 

Marc J. Bouthillier, 

Acting Manager, Engine and Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. E8–20497 Filed 9–3–08; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

Proposed Modification of the Chicago, 

IL, Class B Airspace Area; Public 

Meetings 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Supplemental notice of 

meetings. 

SUMMARY: On July 30, 2008, a notice to 

conduct informal airspace meetings for 

the Chicago Class B airspace project was 

published in the Federal Register (73 

FR 44311). Subsequent to publication, 

the FAA has had to change the venue of 

meetings 1 and 3, being held on 

September 23, 2008, and September 25, 

2008, respectively. The address for both 

of these meetings has changed to 

Signature Flight Center Hangar, 1061 S. 

Wolf Road, Wheeling, IL 60090. The 

second meeting time and place remains 

as previously published. 

DATES: The informal airspace meetings 

will be held on Tuesday, September 23, 

2008, from 2 p.m.–7 p.m., Wednesday, 

September 24, 2008, from 10 a.m.–2 

p.m., and Thursday, September 25, 

2008, from 2 p.m.–7 p.m. 

ADDRESSES: (1) The meeting on 

Tuesday, September 23, 2008, will be 

held at the Signature Flight Center 

hangar, 1061 S. Wolf Road, Wheeling, IL 

60090. (2) The meeting on Wednesday, 

September 24, 2008, will be held at 

DuPage Flight Center, Chicago DuPage 

Airport, 2700 International Drive, West 

Chicago, IL 60185. (3) The meeting on 

Thursday, September 25, 2008, will be 

held at the Signature Flight Center 

hanger, 1061 S. Wolf Road, Wheeling, IL 

60090. 

FOR FURTHER INFORMATION CONTACT: 

Annette Davis, Support Specialist, 

Operations Support Group, Air Traffic 

Organization Central Service Area, 2601 

Meacham Blvd, Fort Worth, TX 76137; 

Telephone (817) 222–5729. 

SUPPLEMENTARY INFORMATION: 

Background 

On July 30, 2008, a notice of meetings 

was published in the Federal Register 

notifying the public of informal airspace 


ebenthall on PRODPC60 with PROPOSALS
51606 Federal Register / Vol. 73, No. 172 / Thursday, September 4, 2008 / Proposed Rules 

meetings for the Chicago Class B 

airspace project (73 FR 44311). 

Subsequent to publication, the FAA 

learned that 2 of the meetings would 

have to be held at a different location. 

This action changes the venue of 

meetings 1 and 3 to the new locations. 

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

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

1963 Comp., p.389. 

Issued in Washington, DC, on August 27, 

2008. 

Edith V. Parish, 

Manager, Airspace and Rules Group. 

[FR Doc. E8–20438 Filed 9–3–08; 8:45 am] 

BILLING CODE 4910–13–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

40 CFR Part 52 

[EPA–R03–OAR–2007–1001; FRL–8709–6] 

Approval and Promulgation of Air 

Quality Implementation Plans; 

Maryland; NOX and SO2 Emissions 

Limitations for Fifteen Coal-Fired 

Electric Generating Units 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Partial withdrawal of proposed 

rule. 

SUMMARY: EPA is withdrawing a portion 

of a proposed rule pertaining to a State 

of Maryland State Implementation Plan 

(SIP) revision that establishes tonnage 

caps for emissions of nitrogen oxides 

(NOX) and sulfur dioxide (SO2) from 15 

coal-fired electric generating units. The 

proposed rule was published on January 

10, 2008 (73 FR 1851). EPA is 

withdrawing a provision of the rule that 

Maryland requested we take no further 

action on. EPA has determined that the 

provision has no impact on the 

remainder of the rule, which is being 

finalized by separate document. This 

SIP action is being taken under the 

Clean Air Act (CAA). 

DATES: The proposed rule for COMAR 

26.11.27.03B(7)(a)(iii) is withdrawn as 

of September 4, 2008. 

FOR FURTHER INFORMATION CONTACT: 

Marilyn Powers at (215) 814–2308, or by 

e-mail at powers.marilyn@epa.gov. 

SUPPLEMENTARY INFORMATION: See the 

information provided in the proposed 

rule entitled, ‘‘Approval and 

Promulgation of Air Quality 

Implementation Plans; Maryland; NOX

and SO2 Emissions Limitations for 

Fifteen Coal-Fired Electric Generating 

Units,’’ located in the Proposed Rules 

section of the January 10, 2008 Federal 

Register (73 FR 1851). On June 23, 2008, 

the Maryland Department of the 

Environment (MDE) submitted a letter 

withdrawing a portion of their July 12, 

2007 submittal. The withdrawal only 

affects COMAR 26.11.27.03B(7)(a)(iii). 

This provision requires a unit that 

exceeds its ozone season NOX emissions 

limit to surrender ozone season NOX

allowances equivalent to the number of 

tons of NOX emitted in excess of the 

limit. The June 23, 2008 letter requested 

that EPA finalize its rulemaking with 

respect to the rest of the SIP Revision 

that is not withdrawn. EPA determined 

that withdrawal of COMAR 

26.11.27.03B(7)(a)(iii) does not impact 

the other requirements in COMAR 

26.11.27 and is severable. The other 

portions of the January 10, 2008 

proposed rule are not affected, and are 

being finalized in a separate notice. 

List of Subjects in 40 CFR Part 52 

Environmental protection, Air 

pollution control, Nitrogen dioxide, 

Reporting and recordkeeping 

requirements, Sulfur oxides. 

Dated: August 20, 2008. 

William T. Wisniewski, 

Acting Regional Administrator, Region III. 

[FR Doc. E8–19999 Filed 9–3–08; 8:45 am] 

BILLING CODE 6560–50–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

40 CFR Part 52 

[EPA–R04–OAR–2006–0649–200750; FRL–

8711–1] 

Approval and Promulgation of 

Implementation Plans; Georgia; 

Prevention of Significant Deterioration 

and Nonattainment New Source 

Review Rules 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Proposed rule. 

SUMMARY: EPA is proposing to partially 

approve and disapprove portions of 

revisions to the Georgia State 

Implementation Plan (SIP) submitted by 

the State of Georgia in three submittals 

dated October 31, 2006, March 5, 2007, 

and August 22, 2007. The proposed 

revisions modify Georgia’s Prevention of 

Significant Deterioration (PSD) and 

Nonattainment New Source Review 

(NNSR) permitting rules in the SIP to 

address changes to the federal New 

Source Review (NSR) regulations, which 

were promulgated by EPA on December 

31, 2002, and reconsidered with minor 

changes on November 7, 2003 

(collectively, these two final actions are 

referred to as the ‘‘2002 NSR Reform 

Rules’’). The proposed revisions include 

provisions for baseline emissions 

calculations, an actual-to-projectedactual methodology for calculating 

emissions changes, options for 

plantwide applicability limits, and 

recordkeeping and reporting 

requirements. EPA is proposing to 

approve Georgia’s NSR rule revisions, 

with the exception of one NNSR 

provision. EPA is proposing to 

disapprove the State’s incorporation of 

‘‘baseline emissions calculations’’ into 

the Georgia NNSR provisions for the 

generation of Emissions Reductions’

Credits to be used as offsets. 

DATES: Comments must be received on 

or before October 6, 2008. 

ADDRESSES: Submit your comments, 

identified by Docket ID No. EPA–R04–

OAR–2006–0649, by one of the 

following methods: 

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

the on-line instructions for submitting 

comments. 

2. E-mail: fortin.kelly@epa.gov. 

3. Fax: 404–562–9019. 

4. Mail: (Docket ID No. EPA–R04–

OAR–2006–0649), Air Planning Branch, 

Air, Pesticides and Toxics Management 

Division, U.S. Environmental Protection 

Agency, Region 4, 61 Forsyth Street, 

SW., Atlanta, Georgia 30303–8960. 

5. Hand Delivery or Courier: Ms. Kelly 

Fortin, Air Planning Branch, Air, 

Pesticides and Toxics Management 

Division, U.S. Environmental Protection 

Agency Region 4, 61 Forsyth Street, 

SW., Atlanta, Georgia 30303–8960. Such 

deliveries are only accepted during the 

Regional Office’s normal hours of 

operation. The Regional Office’s official 

hours of business are Monday through 

Friday, 8:30 to 4:30, excluding federal 

holidays. 

Instructions: Direct your comments to 

Docket ID No. EPA–R04–OAR–2006–

0649. EPA’s policy is that all comments 

received will be included in the public 

docket without change and may be 

made available online at http:// 

www.regulations.gov, including any 

personal information provided, unless 

the comment includes information 

claimed to be Confidential Business 

Information (CBI) or other information 

whose disclosure is restricted by statute. 

Do not submit information that you 

consider to be CBI or otherwise 

protected through http:// 

www.regulations.gov or e-mail. The 

http://www.regulations.gov Web site is 

an ‘‘anonymous access’’ system, which 

means EPA will not know your identity 

or contact information unless you 

provide it in the body of your comment. 

If you send an e-mail comment directly 


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