Federal Register / Vol. 76, No. 134 / Wednesday, July 13, 2011 / Proposed Rules 41145 

temperatures impose a greater low-cycle 

fatigue life debit for each operating 

cycle, requiring removing the affected 

shafts before reaching their certified life 

limits. All of the cracked shafts were 

from the same fleet and engine model. 

This condition, if not corrected, could 

result in failure of the HPC shaft that 

could lead to an uncommanded in-flight 

shutdown or a possible uncontained 

engine failure and damage to the 

airplane. 

FAA’s Determination 

We are proposing this AD because we 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop in other products of the same 

type design. 

Proposed AD Requirements 

This proposed AD would require: 

• For HPC shafts that have more than 

4,500 cycles-since-new (CSN) on the 

effective date of this AD, removing the 

HPC shaft from service within 500 

cycles-in-service (CIS) after the effective 

date of this proposed AD or at the next 

shop visit after the effective date of this 

proposed AD, whichever occurs first. 

• For HPC shafts that have 4,500 or 

fewer CSN on the effective date of this 

AD, removing the HPC shaft from 

service before exceeding 5,000 CSN. 

Costs of Compliance 

We estimate that this proposed AD 

would not affect any engines installed 

on airplanes of U.S. registry. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII: 

Aviation Programs, describes in more 

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 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 this proposed regulation: 

(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), 

(3) Will not affect intrastate aviation 

in Alaska, and 

(4) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA 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 (AD): 

Pratt & Whitney Corp: Docket No. FAA– 

2011–0731; Directorate Identifier 2010– 

NE–39–AD. 

(a) Comments Due Date 

We must receive comments by August 29, 

2011. 

(b) Affected ADs 

None. 

(c) Applicability 

Pratt & Whitney Corp (PW) JT9D–7R4H1 

turbofan engines with a high-pressure 

compressor (HPC) shaft, part numbers (P/Ns) 

808070 or 808071, installed. 

(d) Unsafe Condition 

This AD was prompted by reports of cracks 

in five HPC shafts. We are issuing this AD 

to correct the unsafe condition on these 

products. 

(e) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(f) Engines With an HPC Shaft, P/N 808071, 

That Has More Than 4,500 Cycles-SinceNew (CSN) 

For engines with an HPC shaft, P/N 

808071, that has more than 4,500 CSN on the 

effective date of this AD, remove the HPC 

shaft from service within 500 cycles-inservice (CIS) after the effective date of the AD 

or at piece-part exposure, whichever occurs 

first. 

(g) Engines With an HPC Shaft, P/N 808071, 

That Has 4,500 or Fewer CSN 

For engines with an HPC shaft, P/N 

808071, that has 4,500 or fewer CSN on the 

effective date of this AD, remove the HPC 

shaft from service before exceeding 5,000 

CSN. 

(h) Engines With an HPC Shaft, P/N 808070, 

Removal From Service 

For engines with an HPC shaft, P/N 

808070, remove the HPC shaft, P/N 808070, 

from service not later than 1,200 CSN. 

(i) Installation Prohibition 

After the effective date of this AD, do not 

install or reinstall into any engine: 

(1) Any HPC shaft, P/N 808071, that is at 

piece-part exposure and exceeds the new 

lower life limit of 5,000 CSN, or 

(2) Any HPC shaft, P/N 808070, that is at 

piece-part exposure and exceeds the new 

lower life limit of 1,200 CSN. 

(j) Alternative Methods of Compliance 

(AMOCs) 

The Manager, Engine Certification Office, 

FAA, has the authority to approve AMOCs 

for this AD, if requested using the procedures 

found in 14 CFR 39.19. In accordance with 

14 CFR 39.19. 

(k) Related Information 

For more information about this AD, 

contact Ian Dargin, Aerospace Engineer, 

Engine Certification Office, FAA, 12 New 

England Executive Park, Burlington, MA 

01803; phone: 781–238–7178; fax: 781–238– 

7199; e-mail: ian.dargin@faa.gov. 

Issued in Burlington, Massachusetts, on 

July 7, 2011. 

Peter A. White, 

Acting Manager, Engine & Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2011–17622 Filed 7–12–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2011–0560; Airspace 

Docket No. 11–ANM–15] 

Proposed Amendment of Class E 

Airspace; Glendive, MT 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 


srobinson on DSK4SPTVN1PROD with PROPOSALS
41146 Federal Register / Vol. 76, No. 134 / Wednesday, July 13, 2011 / Proposed Rules 

SUMMARY: This action proposes to 

modify Class E airspace at Dawson 

Community Airport, Glendive, MT, to 

accommodate aircraft using Area 

Navigation (RNAV) Global Positioning 

System (GPS) standard instrument 

approach procedures at the airport. The 

FAA is proposing this action to enhance 

the safety and management of aircraft 

operations at the airport. 

DATES: Comments must be received on 

or before August 29, 2011. 

ADDRESSES: Send comments on this 

proposal to the U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue, SE., 

Washington, DC 20590; telephone (202) 

366–9826. You must identify FAA 

Docket No. FAA–2011–0560; Airspace 

Docket No. 11–ANM–15, at the 

beginning of your comments. You may 

also submit comments through the 

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

FOR FURTHER INFORMATION CONTACT: 

Eldon Taylor, Federal Aviation 

Administration, Operations Support 

Group, Western Service Center, 1601 

Lind Avenue, SW., Renton, WA 98057; 

telephone (425) 203–4537. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

Interested parties are invited to 

participate in this proposed rulemaking 

by submitting such written data, views, 

or arguments, as they may desire. 

Comments that provide the factual basis 

supporting the views and suggestions 

presented are particularly helpful in 

developing reasoned regulatory 

decisions on the proposal. Comments 

are specifically invited on the overall 

regulatory, aeronautical, economic, 

environmental, and energy-related 

aspects of the proposal. 

Communications should identify both 

docket numbers (FAA Docket No. FAA 

2011–0560 and Airspace Docket No. 11– 

ANM–15) and be submitted in triplicate 

to the Docket Management System (see 

ADDRESSES section for address and 

phone number). You may also submit 

comments through the Internet at 

http://www.regulations.gov. 

Commenters wishing the FAA to 

acknowledge receipt of their comments 

on this action must submit with those 

comments a self-addressed stamped 

postcard on which the following 

statement is made: ‘‘Comments to FAA 

Docket No. FAA–2011–0560 and 

Airspace Docket No. 11–ANM–15’’. The 

postcard will be date/time stamped and 

returned to the commenter. 

All communications received on or 

before the specified closing date for 

comments will be considered before 

taking action on the proposed rule. The 

proposal contained in this action may 

be changed in light of comments 

received. All comments submitted will 

be available for examination in the 

public docket both before and after the 

closing date for comments. A report 

summarizing each substantive public 

contact with FAA personnel concerned 

with this rulemaking will be filed in the 

docket. 

Availability of NPRMs 

An electronic copy of this document 

may be downloaded through the 

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

Recently published rulemaking 

documents can also be accessed through 

the FAA’s Web page at http:// 

www.faa.gov/airports_airtraffic/ 

air_traffic/publications/ 

airspace_amendments/. 

You may review the public docket 

containing the proposal, any comments 

received, and any final disposition in 

person in the Dockets Office (see the 

ADDRESSES section for the address and 

phone number) between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. An informal docket 

may also be examined during normal 

business hours at the Northwest 

Mountain Regional Office of the Federal 

Aviation Administration, Air Traffic 

Organization, Western Service Center, 

Operations Support Group, 1601 Lind 

Avenue, SW., Renton, WA 98057. 

Persons interested in being placed on 

a mailing list for future NPRMs should 

contact the FAA’s Office of Rulemaking, 

(202) 267–9677, for a copy of Advisory 

Circular No. 11–2A, Notice of Proposed 

Rulemaking Distribution System, which 

describes the application procedure. 

The Proposal 

The FAA is proposing an amendment 

to Title 14 Code of Federal Regulations 

(14 CFR) Part 71 by modifying Class E 

airspace extending upward from 700 

feet above the surface at Dawson 

Community Airport, Glendive, MT. 

Controlled airspace is necessary to 

accommodate aircraft using the RNAV 

(GPS) standard instrument approach 

procedures at Dawson Community 

Airport. This action would enhance the 

safety and management of aircraft 

operations at the airport. 

Class E airspace designations are 

published in paragraph 6005, of FAA 

Order 7400.9U, dated August 18, 2010, 

and effective September 15, 2010, which 

is incorporated by reference in 14 CFR 

71.1. The Class E airspace designation 

listed in this document will be 

published subsequently in this Order. 

The FAA has determined this 

proposed regulation only involves an 

established body of technical 

regulations for which frequent and 

routine amendments are necessary to 

keep them operationally current. 

Therefore, this proposed regulation: (1) 

Is not a ‘‘significant regulatory action’’ 

under Executive Order 12866; (2) is not 

a ‘‘significant rule’’ under DOT 

Regulatory Policies and Procedures (44 

FR 11034; February 26, 1979); and (3) 

does not warrant preparation of a 

regulatory evaluation as the anticipated 

impact is so minimal. Since this is a 

routine matter that will only affect air 

traffic procedures and air navigation, it 

is certified this proposed rule, when 

promulgated, would not have a 

significant economic impact on a 

substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

The FAA’s authority to issue rules 

regarding aviation safety is found in 

Title 49 of the U.S. Code. Subtitle 1, 

Section 106, describes the authority for 

the FAA Administrator. Subtitle VII, 

Aviation Programs, describes in more 

detail the scope of the agency’s 

authority. This rulemaking is 

promulgated under the authority 

described in Subtitle VII, Part A, 

Subpart I, Section 40103. Under that 

section, the FAA is charged with 

prescribing regulations to assign the use 

of the airspace necessary to ensure the 

safety of aircraft and the efficient use of 

airspace. This regulation is within the 

scope of that authority as it establishes 

additional controlled airspace at 

Dawson Community Airport, Glendive, 

MT. 

List of Subjects in 14 CFR Part 71 

Airspace, Incorporation by reference, 

Navigation (air). 

The Proposed Amendment 

Accordingly, pursuant to the 

authority delegated to me, the Federal 

Aviation Administration proposes to 

amend 14 CFR part 71 as follows: 

PART 71—DESIGNATION OF CLASS A, 

B, C, D AND E AIRSPACE AREAS; AIR 

TRAFFIC SERVICE ROUTES; AND 

REPORTING POINTS 

1. The authority citation for 14 CFR 

part 71 continues to read as follows: 

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

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

1963 Comp., p. 389. 

§ 71.1 [Amended] 

2. The incorporation by reference in 

14 CFR 71.1 of the Federal Aviation 

Administration Order 7400.9U, 

Airspace Designations and Reporting 

Points, dated August 18, 2010, and 


srobinson on DSK4SPTVN1PROD with PROPOSALS
Federal Register / Vol. 76, No. 134 / Wednesday, July 13, 2011 / Proposed Rules 41147 

effective September 15, 2010 is 

amended as follows: 

Paragraph 6005 Class E airspace areas 

extending upward from 700 feet or more 

above the surface of the earth. 

* * * * * 

ANM MT E5 Glendive, MT [Modify] 

Glendive, Dawson Community Airport, MT 

(Lat. 47°08′19′′ N., long. 104°48′26′′ W.) 

That airspace extending upward from 700 

feet above the surface within a 10.5-mile 

radius of the Dawson Community Airport, 

and within 4 miles northeast and 8.3 miles 

southwest of the 325° bearing from the 

Dawson Community Airport extending from 

the 10.5-mile radius to 16.1 miles northwest 

of the airport; that airspace extending 

upward from 1,200 feet above the surface 

within an area bounded by lat. 47°38′00′′ N., 

long. 104°48′00′′ W.; to lat. 47°17′00′′ N., 

long. 104°05′00′′ W.; to lat. 46°54′00′′ N., 

long. 104°05′00′′ W.; to lat. 46°45′00′′ N., 

long. 105°09′00′′ W.; to lat. 47°00′00′′ N., 

long. 105°37′00′′ W.; to lat. 47°19′00′′ N., 

long. 105°15′00′′ W., thence to the point of 

beginning. 

Issued in Seattle, Washington, on July 6, 

2011. 

John Warner, 

Manager, Operations Support Group, Western 

Service Center. 

[FR Doc. 2011–17540 Filed 7–12–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2011–0517; Airspace 

Docket No. 11–AWP–7] 

Proposed Establishment of Class E 

Airspace; Chinle, AZ 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This action proposes to 

establish Class E airspace at Chinle 

Municipal Airport, Chinle, AZ to 

accommodate aircraft using new Area 

Navigation (RNAV) Global Positioning 

System (GPS) standard instrument 

approach procedures at Chinle 

Municipal Airport. The FAA is 

proposing this action to enhance the 

safety and management of aircraft 

operations at Chinle Municipal Airport. 

DATES: Comments must be received on 

or before August 29, 2011. 

ADDRESSES: Send comments on this 

proposal to the U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue, SE., 

Washington, DC 20590; telephone (202) 

366–9826. You must identify FAA 

Docket No. FAA–2011–0517; Airspace 

Docket No. 11–AWP–7, at the beginning 

of your comments. You may also submit 

comments through the Internet at 

http://www.regulations.gov. 

FOR FURTHER INFORMATION CONTACT: 

Eldon Taylor, Federal Aviation 

Administration, Operations Support 

Group, Western Service Center, 1601 

Lind Avenue, SW., Renton, WA 98057; 

telephone (425) 203–4537. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

Interested parties are invited to 

participate in this proposed rulemaking 

by submitting such written data, views, 

or arguments, as they may desire. 

Comments that provide the factual basis 

supporting the views and suggestions 

presented are particularly helpful in 

developing reasoned regulatory 

decisions on the proposal. Comments 

are specifically invited on the overall 

regulatory, aeronautical, economic, 

environmental, and energy-related 

aspects of the proposal. 

Communications should identify both 

docket numbers (FAA Docket No. FAA 

2011–0517 and Airspace Docket No. 11– 

AWP–7) and be submitted in triplicate 

to the Docket Management System (see 

ADDRESSES section for address and 

phone number). You may also submit 

comments through the Internet at 

http://www.regulations.gov. 

Commenters wishing the FAA to 

acknowledge receipt of their comments 

on this action must submit with those 

comments a self-addressed stamped 

postcard on which the following 

statement is made: ‘‘Comments to FAA 

Docket No. FAA–2011–0517 and 

Airspace Docket No. 11–AWP–7’’. The 

postcard will be date/time stamped and 

returned to the commenter. 

All communications received on or 

before the specified closing date for 

comments will be considered before 

taking action on the proposed rule. The 

proposal contained in this action may 

be changed in light of comments 

received. All comments submitted will 

be available for examination in the 

public docket both before and after the 

closing date for comments. A report 

summarizing each substantive public 

contact with FAA personnel concerned 

with this rulemaking will be filed in the 

docket. 

Availability of NPRMs 

An electronic copy of this document 

may be downloaded through the 

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

Recently published rulemaking 

documents can also be accessed through 

the FAA’s Web page at http:// 

www.faa.gov/airports_airtraffic/ 

air_traffic/publications/ 

airspace_amendments/. 

You may review the public docket 

containing the proposal, any comments 

received, and any final disposition in 

person in the Dockets Office (see the 

ADDRESSES section for the address and 

phone number) between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. An informal docket 

may also be examined during normal 

business hours at the Northwest 

Mountain Regional Office of the Federal 

Aviation Administration, Air Traffic 

Organization, Western Service Center, 

Operations Support Group, 1601 Lind 

Avenue, SW., Renton, WA 98057. 

Persons interested in being placed on 

a mailing list for future NPRMs should 

contact the FAA’s Office of Rulemaking, 

(202) 267–9677, for a copy of Advisory 

Circular No. 11–2A, Notice of Proposed 

Rulemaking Distribution System, which 

describes the application procedure. 

The Proposal 

The FAA is proposing an amendment 

to Title 14 Code of Federal Regulations 

(14 CFR) part 71 by establishing Class E 

airspace extending upward from 700 

feet above the surface at Chinle 

Municipal Airport, Chinle, AZ. 

Controlled airspace is necessary to 

accommodate aircraft using new RNAV 

(GPS) standard instrument approach 

procedures at Chinle Municipal Airport. 

This action would enhance the safety 

and management of IFR operations at 

the airport. 

Class E airspace designations are 

published in paragraph 6005, of FAA 

Order 7400.9U, dated August 18, 2010, 

and effective September 15, 2010, which 

is incorporated by reference in 14 CFR 

71.1. The Class E airspace designation 

listed in this document will be 

published subsequently in this Order. 

The FAA has determined this 

proposed regulation only involves an 

established body of technical 

regulations for which frequent and 

routine amendments are necessary to 

keep them operationally current. 

Therefore, this proposed regulation; (1) 

is not a ‘‘significant regulatory action’’ 

under Executive Order 12866; (2) is not 

a ‘‘significant rule’’ under DOT 

Regulatory Policies and Procedures (44 

FR 11034; February 26, 1979); and (3) 

does not warrant preparation of a 

regulatory evaluation as the anticipated 

impact is so minimal. Since this is a 

routine matter that will only affect air 

traffic procedures and air navigation, it 

is certified this proposed rule, when 

promulgated, would not have a 


srobinson on DSK4SPTVN1PROD with PROPOSALS