Airworthiness Directives; Pratt & Whitney (PW) Models PW4074 and PW4077 Turbofan Engines, 47056-47057 [2011-19476]

Download as PDF 47056 Federal Register / Vol. 76, No. 150 / Thursday, August 4, 2011 / Rules and Regulations rmajette on DSK89S0YB1PROD with RULES 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. VerDate Mar<15>2010 15:19 Aug 03, 2011 Jkt 223001 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 (ERP). Emergency Restoration Plan * * * * * (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 Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: 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 SUMMARY: PO 00000 Frm 00002 Fmt 4700 Sfmt 4700 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 https:// 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 E:\FR\FM\04AUR1.SGM 04AUR1 Federal Register / Vol. 76, No. 150 / Thursday, August 4, 2011 / Rules and Regulations 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. 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. (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. Authority for This Rulemaking § 39.13 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. ■ Alternative Methods of Compliance 2011–14–07 Pratt & Whitney: Amendment 39–16742; Docket No. FAA–2010–1095; Directorate Identifier 2009–NE–40–AD. (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. rmajette on DSK89S0YB1PROD with RULES 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. VerDate Mar<15>2010 15:19 Aug 03, 2011 Jkt 223001 [Amended] 47057 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): Effective Date (a) This AD is effective September 8, 2011. Related Information 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. (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 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 PO 00000 Frm 00003 Fmt 4700 Sfmt 9990 (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 https://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 E:\FR\FM\04AUR1.SGM 04AUR1

Agencies

[Federal Register Volume 76, Number 150 (Thursday, August 4, 2011)]
[Rules and Regulations]
[Pages 47056-47057]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-19476]


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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 https://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

[[Page 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

0
1. The authority citation for part 39 continues to read as follows:

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


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  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 https://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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