Federal Register / Vol. 74, No. 129 / Wednesday, July 8, 2009 / Rules and Regulations 32421 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 

Branch, ANM–116, Transport Airplane 

Directorate, FAA, has the authority to 

approve AMOCs for this AD, if requested 

using the procedures found in 14 CFR 39.19. 

Send information to ATTN: Tom Rodriguez, 

Aerospace Engineer, International Branch, 

ANM–116, Transport Airplane Directorate, 

FAA, 1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone (425) 

227–1137; fax (425) 227–1149. Before using 

any approved AMOC on any airplane to 

which the AMOC applies, notify your 

appropriate principal maintenance inspector 

(PMI) or principal avionics inspector (PAI), 

as appropriate, or lacking a principal 

inspector, your local Flight Standards District 

Office. 

(2) Airworthy Product: For any 

requirement in this AD to obtain corrective 

actions from a manufacturer or other source, 

use these actions if they are FAA-approved. 

Corrective actions are considered FAAapproved if they are approved by the State 

of Design Authority (or their delegated 

agent). You are required to assure the product 

is airworthy before it is returned to service. 

(3) Reporting Requirements: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act, 

the Office of Management and Budget (OMB) 

has approved the information collection 

requirements and has assigned OMB Control 

Number 2120–0056. 

Related Information 

(h) Refer to MCAI European Aviation 

Safety Agency Airworthiness Directive 2008– 

0123, dated July 2, 2008; and Dassault 

Mandatory Service Bulletin F20–766, 

Revision 1, dated June 24, 2008; for related 

information. 

Material Incorporated by Reference 

(i) You must use Dassault Mandatory 

Service Bulletin F20–766, Revision 1, dated 

June 24, 2008, 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 

this service information under 5 U.S.C. 

552(a) and 1 CFR part 51. 

(2) For service information identified in 

this AD, contact Dassault Falcon Jet, P.O. Box 

2000, South Hackensack, New Jersey 07606; 

telephone 201–440–6700; Internet http:// 

www.dassaultfalcon.com. 

(3) You may review copies of the service 

information at the FAA, Transport Airplane 

Directorate, 1601 Lind Avenue, SW., Renton, 

Washington. For information on the 

availability of this material at the FAA, call 

425–227–1221 or 425–227–1152. 

(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 NARA, call 202–741–6030, or go 

to: http://www.archives.gov/federal_register/

code_of_federal_regulations/

ibr_locations.html. 

Issued in Renton, Washington, on June 24, 

2009. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E9–15638 Filed 7–7–09; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2009–0417; Directorate 

Identifier 2009–NE–13–AD; Amendment 39– 

15955; AD 2009–14–05] 

RIN 2120–AA64 

Airworthiness Directives; Pratt & 

Whitney Models PW2037, PW2037(M), 

and PW2040 Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule; request for 

comments. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for Pratt & 

Whitney models PW2037, PW2037(M), 

and PW2040 turbofan engines. This AD 

requires 12th stage disks of certain highpressure compressor (HPC) drum rotor 

disk assemblies, to be inspected for 

cracks by Pratt & Whitney using a 

special eddy current inspection 

procedure. This AD results from six 

HPC 12th stage disks found cracked 

during HPC module disassembly at 

overhaul. We are issuing this AD to 

prevent uncontained failure of the HPC 

12th stage disk and airplane damage. 

DATES: This AD becomes effective July 

23, 2009. The Director of the Federal 

Register approved the incorporation by 

reference of certain publications listed 

in the regulations as of July 23, 2009. 

We must receive any comments on 

this AD by September 8, 2009. 

ADDRESSES: Use one of the following 

addresses to comment on this AD: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov and follow 

the instructions for sending your 

comments electronically. 

• Mail: U.S. Docket Management 

Facility, Department of Transportation, 

1200 New Jersey Avenue, SE., West 

Building Ground Floor, Room W12–140, 

Washington, DC 20590–0001. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

• Fax: (202) 493–2251. 

FOR FURTHER INFORMATION CONTACT: 

Mark Riley, Aerospace Engineer, Engine 

Certification Office, FAA, Engine and 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

e-mail: mark.riley@faa.gov; telephone 

(781) 238–7758, fax (781) 238–7199. 

Contact Pratt & Whitney, 400 Main 

Street, East Hartford, CT 06108, for the 

service information identified in This 

AD. 

SUPPLEMENTARY INFORMATION: In 

November 2006, a Pratt & Whitney 

model PW2037 turbofan engine was 

found to have a cracked HPC 12th stage 

disk during routine overhaul. The crack 

extended from the disk bore to the disk 

rim. Investigation by Pratt & Whitney 

revealed that the disk had a material 

defect that occurred during original 

manufacture. In July 2007, a second 

HPC 12th stage disk was found cracked 

with the same defect. In response to the 

cracking, Pratt & Whitney issued Alert 

Service Bulletin (ASB) No. PW2000 

A72–736 on January 5, 2009, 

recommending removal of 26 additional 

HPC 12th stage disks, manufactured 

from this same material heat. Pratt 

concluded that this population might 

have the same material defects and 

therefore, be susceptible to cracking. 

Thereafter, in February 2009, after Pratt 

& Whitney issued the ASB, we became 

aware of four additional HPC 12th stage 

disks, manufactured from the same 

material heat, that had small cracks in 

the disk bores that originated from 

similar material defects. Because of Pratt 

& Whitney’s recommended short 

compliance times in the ASB, we are 

issuing this final rule; request for 

comments AD. This condition, if not 

corrected, could result in uncontained 

failure of the HPC 12th stage disk and 

airplane damage. 

Relevant Service Information 

We have reviewed and approved the 

technical contents of Pratt & Whitney 

ASB No. PW2000 A72–736, dated 

January 5, 2009. That ASB describes 

procedures for having Pratt & Whitney 

perform the special eddy-current 

inspection performed on the 12th stage 

disks. 

Differences Between This AD and the 

Service Information 

The recommended compliance times 

in the Pratt & Whitney ASB are stated 

as calendar dates for each engine model. 

We specify cycles-in-service rather than 

calendar dates, because the risk of crack 

development is cycle, not time 

dependant. 

FAA’s Determination and Requirements 

of This AD 

The unsafe condition described 

previously is likely to exist or develop 


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32422 Federal Register / Vol. 74, No. 129 / Wednesday, July 8, 2009 / Rules and Regulations 

on other Pratt & Whitney models 

PW2037, PW2037(M), and PW2040 

turbofan engines of the same type 

design. For that reason, we are issuing 

this AD to prevent uncontained failure 

of the HPC 12th stage disk and airplane 

damage. This AD requires 12th stage 

disks of certain HPC drum rotor disk 

assemblies, to be inspected for cracks by 

Pratt & Whitney using a special eddy 

current inspection procedure. 

FAA’s Determination of the Effective 

Date 

Since an unsafe condition exists that 

requires the immediate adoption of this 

AD, we have found that notice and 

opportunity for public comment before 

issuing this AD are impracticable, and 

that good cause exists for making this 

amendment effective in less than 30 

days. 

Comments Invited 

This AD is a final rule that involves 

requirements affecting flight safety and 

was not preceded by notice and an 

opportunity for public comment; 

however, we invite you to send us any 

written relevant data, views, or 

arguments regarding this AD. Send your 

comments to an address listed under 

ADDRESSES. Include ‘‘AD Docket No. 

FAA–2009–0417; Directorate Identifier 

2009–NE–13–AD’’ in the subject line of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of the rule that might suggest a 

need to modify it. 

We will post all comments we 

receive, without change, to http:// 

www.regulations.gov, including any 

personal information you provide. We 

will also post a report summarizing each 

substantive verbal contact with FAA 

personnel concerning this AD. Using the 

search function of the Web site, anyone 

can find and read the comments in any 

of our dockets, including, if provided, 

the name of the individual who sent the 

comment (or signed the comment on 

behalf of an association, business, labor 

union, etc.). You may review the DOT’s 

complete Privacy Act Statement in the 

Federal Register published on April 11, 

2000 (65 FR 19477–78). 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Operations office 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 street address for 

the Docket Operations office (telephone 

(800) 647–5527) is the same as the Mail 

address provided in the ADDRESSES

section. Comments will be available in 

the AD docket shortly after receipt. 

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 have determined that 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 the 

DOT Regulatory Policies and Procedures 

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

3. 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. 

We prepared a summary of the costs 

to comply with this AD and placed it in 

the AD Docket. 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, Incorporation by reference, 

Safety. 

Adoption of the Amendment 

■ Under the authority delegated to me 

by the Administrator, the Federal 

Aviation Administration amends part 39 

of the Federal Aviation Regulations (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: 

2009–14–05 Pratt & Whitney: Amendment 

39–15955. Docket No. FAA–2009–0417; 

Directorate Identifier 2009–NE–13–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective July 23, 2009. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Pratt & Whitney 

models PW2037, PW2037(M), and PW2040 

turbofan engines, with the following highpressure compressor (HPC) drum rotor disk 

assemblies installed: 

TABLE 1—AFFECTED HPC DRUM

ROTOR DISK ASSEMBLIES

Drum Rotor Disk Assembly Part No. 

1B3702; 1B3702–001; 

1B3610; 1B3610–001; 

or 1B7377— 

Serial No. 

12th Stage Disk Billet 

and Heat No. 

T62805 ...................... T/LALY–4013 

R80293 ...................... T/LALY–4012 

R80289 ...................... T/LALY–4010 

R80322 ...................... T/LALY–4009 

R80330 ...................... T/LALY–4008 

R78394 ...................... T/LALY–4007 

R80281 ...................... T/LALY–4006 

R80304 ...................... T/LALY–4005 

R80343 ...................... T/LALY–4004 

R80299 ...................... T/LALY–4003 

R80313 ...................... T/LALY–4002 

R80333 ...................... M1/LALY–4035 

R80324 ...................... M1/LALY–4034 

R80310 ...................... M1/LALY–4033 

R80326 ...................... M1/LALY–4030 

R80305 ...................... M1/LALY–4026 

R80315 ...................... M1/LALY–4025 

R80309 ...................... M1/LALY–4024 

R80341 ...................... M1/LALY–4023 

R80329 ...................... M1/LALY–4022 

R80312 ...................... M1/LALY–4020 

R80321 ...................... M1/LALY–4019 

R80319 ...................... M2/LALY–4040 

R80358 ...................... M2/LALY–4039 

R80302 ...................... M2/LALY–4038 

R80336 ...................... M2/LALY–4037 

These engines are installed on, but not 

limited to, Boeing 757–200 and 757–300 

airplanes. 

Unsafe Condition 

(d) This AD results from six HPC 12th stage 

disks found cracked during HPC module 

disassembly at overhaul. We are issuing this 


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Federal Register / Vol. 74, No. 129 / Wednesday, July 8, 2009 / Rules and Regulations 32423 

AD to prevent uncontained failure of the HPC 

12th stage disk and airplane damage. 

Compliance 

(e) You are responsible for having the 

actions required by this AD performed at the 

following compliance times: 

(1) For PW2040 turbofan engines, within 

200 cycles-in-service (CIS) after the effective 

date of this AD, unless the actions have 

already been done. 

(2) For PW2037 and PW2037(M) turbofan 

engines, within 400 CIS after the effective 

date of this AD, unless the actions have 

already been done. 

Non-Destructive Inspection 

(f) Have a special eddy-current inspection 

performed on the 12th stage disks installed 

in the HPC drum rotor disk assemblies listed 

in Table 1 of this AD, for cracks. Use 

paragraph 1 of the Accomplishment 

Instructions of Pratt & Whitney Alert Service 

Bulletin No. PW2000 A72–736, dated January 

5, 2009, to do the special eddy current 

inspection. 

Alternative Methods of Compliance 

(g) 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 

(h) Contact Mark Riley, Aerospace 

Engineer, Engine Certification Office, FAA, 

Engine and Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; e-mail: mark.riley@faa.gov; telephone 

(781) 238–7758, fax (781) 238–7199. 

Material Incorporated by Reference 

(i) You must use Pratt & Whitney Alert 

Service Bulletin No. PW2000 A72–736, dated 

January 5, 2009, to have the special eddy 

current inspections performed by this AD. 

The Director of the Federal Register approved 

the incorporation by reference of this service 

bulletin in accordance with 5 U.S.C. 552(a) 

and 1 CFR part 51. Contact Pratt & Whitney, 

400 Main Street, East Hartford, CT 06108, for 

a copy of this service information. You may 

review copies at the FAA, New England 

Region, 12 New England Executive Park, 

Burlington, MA; or at the National Archives 

and Records Administration (NARA). For 

information on the availability of this 

material at NARA, call 202–741–6030, or go 

to: http://www.archives.gov/federal-register/

cfr/ibr-locations.html. 

Issued in Burlington, Massachusetts, on 

June 23, 2009. 

Peter A. White, 

Assistant Manager, Engine and Propeller 

Directorate, Aircraft Certification Service. 

[FR Doc. E9–15398 Filed 7–7–09; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–1116; Directorate 

Identifier 2007–NM–231–AD; Amendment 

39–15954; AD 2009–14–04] 

RIN 2120–AA64 

Airworthiness Directives; Boeing 

Model 737–100, –200, –200C, –300, 

–400, and –500 Series Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for certain 

Boeing Model 737–100, –200, –200C, 

–300, –400, and –500 series airplanes. 

For certain airplanes, this AD requires 

deactivating or modifying the wiring to 

the outboard landing lights, until the 

wire bundles and electrical connectors 

have been replaced. For all airplanes, 

this AD also requires inspecting for any 

broken, damaged, or missing fairleads, 

grommets, and wires in the four 

electrical junction boxes of the main 

wheel well, and corrective actions if 

necessary. For certain airplanes, this AD 

also requires replacing certain wire 

bundles for the landing lights and fuel 

shutoff valves, and related investigative, 

other specified, and corrective actions if 

necessary. For certain airplanes, this AD 

also requires replacing of certain 

electrical connectors and backshell 

clamps. This AD results from reports of 

uncommanded engine shutdowns and 

burned and damaged wire bundles 

associated with the outboard landing 

lights and engine fuel shutoff valves. 

This AD also results from reports of 

damaged and missing grommets and 

broken and damaged fairleads in the 

electrical junction boxes of the main 

wheel well. We are issuing this AD to 

prevent a hot short between the 

outboard landing light and fuel shutoff 

valve circuits, which could result in an 

uncommanded engine shutdown. We 

are also issuing this AD to prevent 

corrosion of the electrical connectors of 

the wing rear spars, which could result 

in short circuits and consequent 

incorrect functioning of airplane 

systems needed for safe flight and 

landing. 

DATES: This AD is effective August 12, 

2009. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of August 12, 2009. 

ADDRESSES: For service information 

identified in this AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, P.O. Box 3707, 

MC 2H–65, Seattle, Washington 98124– 

2207; telephone 206–544–5000, 

extension 1; fax 206–766–5680; e-mail 

me.boecom@boeing.com; Internet 

https://www.myboeingfleet.com. 

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 (telephone 800–647–5527) 

is the 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: 

Stephen Oshiro, Aerospace Engineer, 

Systems and Equipment Branch, ANM– 

130S, FAA, Seattle Aircraft Certification 

Office, 1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 917–6480; fax (425) 917–6590. 

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 

certain Boeing Model 737–100, –200, 

–200C, –300, –400, and –500 series 

airplanes. That NPRM was published in 

the Federal Register on October 22, 

2008 (73 FR 62937). That NPRM 

proposed to require deactivating or 

modifying of the wiring to the outboard 

landing lights, until the wire bundles 

and electrical connectors have been 

replaced. For all airplanes, that NPRM 

proposed to require inspecting for any 

broken, damaged, or missing fairleads, 

grommets, and wires in the four 

electrical junction boxes of the main 

wheel well, and corrective actions if 

necessary. For certain airplanes, that 

NPRM also proposed to require 

replacing of certain wire bundles for the 

landing lights and fuel shutoff valves, 

and related investigative, other 

specified, and corrective actions if 

necessary. For certain airplanes, that 

NPRM also proposed to require 

replacing certain electrical connectors 

and backshell clamps. 


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