47056 Federal Register / Vol. 76, No. 150 / Thursday, August 4, 2011 / Rules and Regulations 

FEMA requirements in these areas. It is 

financially advantageous for borrowers 

to qualify and receive disaster assistance 

funds for eligible work from FEMA in 

the event of a declared disaster or 

emergency. When RUS borrowers do not 

meet FEMA Public Assistance Grant 

eligibility requirements, they will be 

ineligible to receive disaster assistance 

funds. 

Accordingly, the Agency published a 

proposed rule on January 26, 2010, at 75 

FR 4006 proposing to amend the ERP 

regulatory requirements to add that the 

ERP reflect compliance with all 

requirements imposed by FEMA for 

reimbursement of the cost of repairs and 

restoration of the borrower’s electric 

system incurred as the result of a 

declared disaster. 

Discussion of Comments and Changes 

RUS received one submission 

electronically on this proposed rule by 

the March 29, 2010, comment deadline. 

The submission was received from the 

National Rural Electric Cooperative 

Association (NRECA). The submission 

is summarized below with the Agency’s 

responses as follows: 

Issue 1: Commentor proposed 

modifying the rule as proposed to add 

a cost/benefit consideration. 

Response: The Agency accepts the 

observation that there are costs to 

compliance. Money and time spent, 

delay in service restoration, and the 

possibility of consumer dissatisfaction 

in an extended outage are relevant in 

power restoration decisions and 

sometimes any additional costs of 

complying with FEMA’s eligibility rules 

may outweigh the benefits of federal 

financial assistance for reimbursement 

and support a decision by a borrower to 

elect to pursue an alternative to 

competitively bidding a restoration job 

as generally required by FEMA. The 

final rule as published permits the 

borrower to make such a determination. 

The rule only requires the borrower 

develop a plan to comply with the 

FEMA requirements and be eligible to 

apply for FEMA assistance. 

Issue 2: Commentor proposed a 

clarifying change that identifies the 

borrower, rather than the ERP, as the 

subject that ‘‘must comply with’’ FEMA 

reimbursement rules. 

Response: Agency concurs. This 

clarification is intended to avoid an 

interpretation that would require the 

ERP to contain a mini manual of how 

to comply with the FEMA rules. 

List of Subjects in 7 CFR 1730 

Electric power; Loan program— 

energy; Reporting and recordkeeping 

requirements; Rural areas. 

For reasons discussed in the 

preamble, the Agency amends 7 CFR, 

Chapter XVII, part 1730 as follows: 

PART 1730—ELECTRIC SYSTEM 

OPERATIONS AND MAINTENANCE 

■ 1. The authority citation for part 1730 

continues to read as follows: 

Authority: 7 U.S.C. 901 et seq., 1921 et 

seq., 6941 et seq. 

■ 2. Amend § 1730.28 as follows: 

■ a. Remove the word ‘‘and’’ from the 

end of paragraph (e)(4); 

■ b. Redesignating paragraph (e)(5) as 

(e)(6); and 

■ c. Add paragraph (e)(5) to read as 

follows: 

§ 1730.28 Emergency Restoration Plan 

(ERP). 

* * * * * 

(e) * * * 

* * * * * 

(5) A section describing a plan to 

comply with the eligibility requirements 

to qualify for the FEMA Public 

Assistance Grant Program; and 

* * * * * 

Dated: July 22, 2011. 

Jonathan Adelstein, 

Administrator, Rural Utilities Service. 

[FR Doc. 2011–19661 Filed 8–3–11; 8:45 am] 

BILLING CODE P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–1095; Directorate 

Identifier 2009–NE–40–AD; Amendment 39– 

16742; AD 2011–14–07] 

RIN 2120–AA64 

Airworthiness Directives; Pratt & 

Whitney (PW) Models PW4074 and 

PW4077 Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for the 

products listed above. This AD requires 

removing the 15th stage HPC disk 

within 12,000 cycles since new (CSN) 

or, for any disks that exceed 12,000 CSN 

after the effective date of this AD using 

a drawdown plan that includes a 

borescope inspection (BSI) or eddy 

current inspection (ECI) of the rim for 

cracks. This AD was prompted by 

multiple shop findings of cracked 15th 

stage HPC disks. We are issuing this AD 

to prevent cracks from propagating into 

the disk bolt holes, which could result 

in a failure of the 15th stage HPC disk, 

uncontained engine failure, and damage 

to the airplane. 

DATES: This AD is effective September 8, 

2011. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in the AD 

as of September 8, 2011. 

ADDRESSES: For service information 

identified in this AD, contact Pratt & 

Whitney, 400 Main St., East Hartford, 

CT 06108; telephone (860) 565–7700; 

fax (860) 565–1605. You may review 

copies of the referenced service 

information at the FAA, Engine & 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA. For 

information on the availability of this 

material at the FAA, call (781) 238– 

7125. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Management Facility between 

9 a.m. and 5 p.m., Monday through 

Friday, except Federal holidays. The AD 

docket contains this AD, the regulatory 

evaluation, any comments received, and 

other information. The address for the 

Docket Office (phone: 800–647–5527) is 

Document Management Facility, U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue, SE., Washington, 

DC 20590. 

FOR FURTHER INFORMATION 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. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an airworthiness 

directive (AD) that would apply to the 

specified products. That NPRM 

published in the Federal Register on 

November 2, 2010, (75 FR 67253). That 

NPRM proposed to require removing the 

15th stage HPC disk before 12,000 CSN, 

or for any disks that exceed 12,000 CSN 

after the effective date of this AD, using 

a drawdown plan that includes a BSI or 

ECI of the rim for cracks. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

received no comments on the NPRM or 


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Federal Register / Vol. 76, No. 150 / Thursday, August 4, 2011 / Rules and Regulations 47057 

on the determination of the cost to the 

public. 

Conclusion 

We reviewed the relevant data and 

determined that air safety and the 

public interest require adopting the AD 

as proposed. 

Costs of Compliance 

We estimate that this AD will affect 

44 engines installed on airplanes of U.S. 

registry. Prorated parts life will cost 

about $66,000 per 15th stage HPC disk. 

Based on these figures, we estimate the 

total cost of the AD to U.S. operators to 

be $2,904,000. 

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 

This AD will not have federalism 

implications under Executive Order 

13132. This AD will 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 this AD: 

(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), 

(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, Incorporation by reference, 

Safety. 

Adoption of the Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 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): 

2011–14–07 Pratt & Whitney: Amendment 

39–16742; Docket No. FAA–2010–1095; 

Directorate Identifier 2009–NE–40–AD. 

Effective Date 

(a) This AD is effective September 8, 2011. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Pratt & Whitney 

(PW) PW4074 and PW4077 turbofan engines 

with 15th stage high-pressure compressor 

(HPC) disks, part number (P/N) 55H615, 

installed. 

Unsafe Condition 

(d) This AD results from multiple shop 

findings of cracked 15th stage HPC disks. We 

are issuing this AD to prevent cracks from 

propagating into the bolt holes of the 15th 

stage HPC disk, which could result in a 

failure of the 15th stage HPC disk, 

uncontained engine failure, and damage to 

the airplane. 

Compliance 

(e) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified unless the 

actions have already been done. 

(f) For 15th stage HPC disks that have 9,865 

or fewer cycles since new (CSN) on the 

effective date of this AD, remove the disk 

from service before accumulating 12,000 

CSN. 

(g) For 15th stage HPC disks that have 

accumulated more than 9,865 CSN on the 

effective date of this AD, do the following: 

(1) Remove the disk from service at the 

next piece-part exposure above 12,000 CSN, 

not to exceed 2,135 cycles-in-service (CIS) 

after the effective date of this AD. 

(2) For 15th stage HPC disks that are 

installed in the engine and exceed 12,000 

CSN on the effective date of this AD, perform 

a borescope inspection (BSI) or eddy current 

inspection (ECI) of the disk rim according to 

the following schedule: 

(i) Within 2,400 cycles-since-last 

fluorescent penetrant inspection or ECI, or 

(ii) Within 1,200 cycles-since-last BSI, or 

(iii) Within 55 CIS after the effective date 

of this AD, whichever occurs later. 

(3) If the BSI from paragraph (g)(2) of this 

AD indicates the presence of a crack in the 

disk rim, but you can’t visually confirm a 

crack, perform an ECI within 5 CIS after the 

BSI. 

(4) If you confirm a crack in the disk rim 

using any inspection method, remove the 

disk from service before further flight. 

(h) Use paragraph 1.A. or 1.B. of the 

Accomplishment Instructions ‘‘For Engines 

Installed on the Aircraft’’ or 1.A. or 1.B. of 

the Accomplishment Instructions ‘‘For 

Engines Removed from the Aircraft,’’ of PW 

Service Bulletin PW4G–112–72–309, 

Revision 1, dated July 1, 2010 to perform the 

inspections. 

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) 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. 

Material Incorporated by Reference 

(k) You must use Pratt & Whitney Service 

Bulletin PW4G–112–72–309, Revision 1, 

dated July 1, 2010, to do the actions required 

by this AD, unless the AD specifies 

otherwise. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

the service information contained in this AD 

under 5 U.S.C. 552(a) and 1 CFR part 51. 

(2) For service information identified in 

this AD, contact Pratt & Whitney, 400 Main 

St., East Hartford, CT 06108; telephone (860) 

565–7700; fax (860) 565–1605. 

(3) You may review copies of the service 

information at the FAA, Engine & Propeller 

Directorate, 12 New England Executive Park, 

Burlington, MA. For information on the 

availability of this material at the FAA, call 

(781) 238–7125. 

(4) You may also review copies of the 

service information that is incorporated by 

reference at the National Archives and 

Records Administration (NARA). For 

information on the availability of this 

material at an NARA facility, call 202–741– 

6030, or go to http://www.archives.gov/

federal_register/code_of_federal_regulations/

ibr_locations.html. 

Issued in Burlington, Massachusetts, on 

June 24, 2011. 

Peter A. White, 

Acting Manager, Engine & Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. 2011–19476 Filed 8–3–11; 8:45 am] 

BILLING CODE 4910–13–P 


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