72130 Federal Register / Vol. 76, No. 225 / Tuesday, November 22, 2011 / Proposed Rules 

(2) Contact Alan Strom, Aerospace 

Engineer, Engine Certification Office, FAA, 

Engine & Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; phone: (781) 238–7143; fax: (781) 

238–7199; email: alan.strom@faa.gov, for 

more information about this AD. 

(3) For service information identified in 

this AD, contact Thielert Aircraft Engines 

GmbH, Platanenstrasse 14 D–09350, 

Lichtenstein, Germany, phone: +49–37204– 

696–0; fax: +49–37204–696–2912; email: 

info@centurion-engines.com. 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. 

Issued in Burlington, Massachusetts, on 

November 10, 2011. 

Peter A. White, 

Manager, Engine & Propeller Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–30059 Filed 11–21–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–27023; Directorate 

Identifier 98–ANE–47–AD] 

RIN 2120–AA64 

Airworthiness Directives; Pratt & 

Whitney JT9D Series Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to supersede an 

existing airworthiness directive (AD) 

that applies to all Pratt & Whitney (PW) 

JT9D series turbofan engines. The 

existing AD currently requires revisions 

to the Airworthiness Limitations 

Section (ALS) of the manufacturer’s 

Instructions for Continued 

Airworthiness (ICA) to include required 

enhanced inspection of selected critical 

life-limited parts at each piece-part 

opportunity. Since we issued that AD, 

PW has added mandatory inspections 

for certain critical life-limited parts. 

This proposed AD would require 

additional revisions to the JT9D series 

engines ALS sections of the 

manufacturer’s ICA. This proposed AD 

results from the need to require 

enhanced inspection of selected critical 

life-limited parts of JT9D series engines. 

We are proposing this AD to prevent 

critical life-limited rotating engine part 

failure, which could result in an 

uncontained engine failure and damage 

to the airplane. 

DATES: We must receive comments on 

this proposed AD by January 23, 2012. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

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

instructions for submitting comments. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

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 proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Office 

(phone: (800) 647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: 

Stephen Sheely, Aerospace Engineer, 

Engine & Propeller Directorate, FAA, 12 

New England Executive Park, 

Burlington, MA 01803; phone: (781) 

238–7750; fax: (781) 238–7199; email: 

stephen.k.sheely@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposed AD. Send your comments 

to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2007–27023; Directorate Identifier 

98–ANE–47–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD because of those 

comments. 

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 we receive 

about this proposed AD. 

Discussion 

On March 1, 2007, we issued AD 

2007–05–17, Amendment 39–14978 (72 

FR 10350, March 8, 2007), for all PW 

JT9D series turbofan engines. That AD 

requires revisions to the ALS of the 

manufacturer’s ICA to include required 

enhanced inspection of selected critical 

life-limited parts at each piece-part 

opportunity. We issued that AD to 

prevent critical life-limited rotating 

engine part failure, which could result 

in an uncontained engine failure and 

damage to the airplane. 

Actions Since Existing AD (72 FR 

10350, March 8, 2007) Was Issued 

Since we issued AD 2007–05–17, an 

FAA study of in-service events 

involving uncontained failures of 

critical rotating engine parts has 

indicated the need for additional 

mandatory inspections. The mandatory 

inspections are needed to identify those 

critical rotating parts with conditions 

which, if allowed to continue in service, 

could result in uncontained engine 

failures. This proposal would require 

revisions to the JT9D series engines ALS 

sections of the manufacturer’s manuals 

and an air carrier’s approved continuous 

airworthiness maintenance program to 

incorporate additional inspection 

requirements. 

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 retain all of 

the requirements of AD 2007–05–17 (72 

FR 10350, March 8, 2007). This 

proposed AD would supersede AD 

2007–05–17 to require the following 

additional inspections: 

• Adding eddy current inspections 

(ECIs) for web cooling holes in highpressure turbine (HPT) stage 1 disks 

installed in engine models JT9D–3A, –7, 

–7A, –7AH, –7F, –7H, –7J, –20, and –20J 

engines; 

• Adding ECIs for web cooling holes 

and tierod holes in HPT stage 2 disks 

installed in JT9D–59A and –70A 

engines; 

• Adding ECIs for web cooling holes 

and tierod holes in HPT stage 2 disks 

installed in JT9D–7Q and –7Q3 engines; 

• Adding ECIs for web cooling holes 

in HPT stage 2 disks, and for fan hub 


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Federal Register / Vol. 76, No. 225 / Tuesday, November 22, 2011 / Proposed Rules 72131 

slots, installed in JT9D–7R4 engines; 

and 

• Adding ECIs for web cooling holes 

and tierod holes in HPT stage 2 disks 

installed in JT9D–7R4D, –7R4D1, 

–7R4E, and –7R4E1 engines. 

This proposed AD would also add the 

Engine Manual Inspection Task and Sub 

Task Number references for these 

inspections. 

Identifying the Part Nomenclatures and 

Inspections Added 

For reference, the part nomenclatures 

and inspections added to the table in 

the compliance section of this proposed 

AD are identified by two asterisks (**) 

that precede the part nomenclature. 

Costs of Compliance 

We estimate that 438 JT9D series 

engines are installed on airplanes of 

U.S. registry and would be affected by 

this proposed AD. We also estimate that 

about 4 work hours per engine are 

needed to perform the proposed actions, 

and that the average labor rate is $85 per 

work hour. Since this is an added 

inspection requirement that will be part 

of the normal maintenance cycle, no 

additional parts costs are involved. 

Based on these figures, we estimate the 

total cost of the proposed AD to U.S. 

operators to be $148,920. 

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 

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 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, Incorporation by reference, 

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 

removing airworthiness directive (AD) 

2007–05–17, Amendment 39–14978 (72 

FR 10350, March 8, 2007), and adding 

the following new AD: 

Pratt & Whitney: Docket No. FAA–2007– 

27023; Directorate Identifier 98–ANE– 

47–AD. 

(a) Comments Due Date 

The FAA must receive comments on this 

AD action by January 23, 2012. 

(b) Affected ADs 

This AD supersedes AD 2007–05–17, 

Amendment 39–14978 (72 FR 10350, March 

8, 2007). 

(c) Applicability 

This AD applies to Pratt & Whitney (PW) 

JT9D–3A, –7, –7A, –7H, –7AH, –7F, –7J, 

–20J, –59A, –70A, –7Q, –7Q3, –7R4D, 

–7R4D1, –7R4E, –7R4E1, –7R4E4, –7R4G2, 

and –7R4H1 series turbofan engines. 

(d) Unsafe Condition 

This AD results from the need to require 

enhanced inspection of selected critical lifelimited parts of JT9D series turbofan engines. 

We are issuing this AD to prevent critical 

life-limited rotating engine part failure, 

which could result in an uncontained engine 

failure and damage to the airplane. 

(e) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(f) Inspections 

Within the next 30 days after the effective 

date of this AD, add the following section to 

the Airworthiness Limitations Section (ALS) 

of your copy of the manufacturer’s 

Instructions for Continued Airworthiness 

(ICA) and, for air carrier operations, to your 

continuous airworthiness air carrier 

maintenance program: 

‘‘MANDATORY INSPECTIONS’’ 

(1) Inspect the following life-limited parts 

at each piece-part opportunity in accordance 

with the instructions provided in the 

applicable manual provisions: 

Engine model Engine manual part No. 

(P/N) Part nomenclature Inspect per manual section Inspection/check 

3A/7/7A/7AH/7F/7H/7J/20/ 

20J.

*646028 (or the equivalent customized 

versions, 770407 and 

770408).

All Fan Hubs ........................................................... 72–31–04 Inspection-02. 

All HPC Stage 5–15 Disks and Rear Compressor 

Drive Turbine Shafts.

72–35–00 Inspection-03. 

All HPT Stage 1–2 Disks and Hubs ....................... 72–51–00 Inspection-03. 

**All HPT Stage 1 Disk Web Cooling Holes ........... 72–51–02 Inspection-06. 

All HPT Stage 2 Disk Web Tierod Holes ................ 72–51–02 Inspection-05. 

All LPT Stage 3–6 Disks and Hubs ........................ 72–52–00 Inspection-03. 

59A/70A ...........................754459 ...........................All Fan Hubs ........................................................... 72–31–00 Check-00. 

All HPC Stage 5–15 Disks and Rear Compressor 

Drive Turbine Shafts.

72–35–00 Check-00. 

All HPT Stage 1–2 Disks and Hubs ....................... 72–51–00 Check-03. 


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72132 Federal Register / Vol. 76, No. 225 / Tuesday, November 22, 2011 / Proposed Rules 

Engine model Engine manual part No. 

(P/N) Part nomenclature Inspect per manual section Inspection/check 

...................................................................................All HPT Stage 1 Disk Web Cooling Holes .............. 72–51–02 Check-03. 

**All HPT Stage 2 Disk Tierod and Web Cooling 

Holes.

72–51–02 Check-04. 

All LPT Stage 3–6 Disks and Hubs ........................ 72–52–00 Check-03. 

7Q/7Q3 .............................777210 ...........................All Fan Hubs ........................................................... 72–31–00 Inspection-03. 

All HPC Stage 5–15 Disks and Rear Compressor 

Drive Turbine Shafts.

72–35–00 Inspection-03. 

All HPT Stage 1–2 Disks and Hubs All HPT Stage 

1 Disk Web Cooling Holes.

72–51–00 

72–51–06 

Inspection-03. 

Inspection-03. 

**All HPT Stage 2 Disk Tierod and Web Cooling 

Holes.

72–51–07 Inspection-03. 

All LPT Stage 3–6 Disks and Hubs ........................ 72–52–00 Inspection-03. 

7R4 ALL ...........................785058, 785059, and 

789328.

All Fan Hubs ........................................................... 72–31–00 Inspection/Check-03. 

**All Fan Hub Slots ................................................. 72–31–01 Inspection/Check-02. 

All HPC Stage 5–15 Disks and Rear Compressor 

Drive Turbine Shafts.

72–35–00 Inspection/Check 03. 

All HPT Stage 1–2 Disks and Hubs ....................... 72–51–00 Inspection/Check 03. 

All LPT Stage 3–6 Disks and Hubs ........................ 72–52–00 Inspection/Check 03 

**All HPT Stage 2 Disk Tierod and Web Cooling 

Holes.

72–51–07 Inspection/Check-02. 

7R4D/D1/E/E1 ..................785058 and 785059 .......All HPT Stage 1 Disk Web Cooling Holes .............. 72–51–06 Inspection/Check-02. 

**All HPT Stage 2 Disk Tierod and Web Cooling 

Holes.

72–51–07 Inspection/Check-02. 

* P/N 770407 and 770408 are customized versions of P/N 646028 engine manual. 

** Two asterisks identify the part nomenclatures and inspections added to the table. 

(2) For the purposes of these mandatory 

inspections, piece-part opportunity means: 

(i) The part is considered completely 

disassembled when disassembly is in 

accordance with the disassembly instructions 

in the manufacturer’s engine shop manual; 

and 

(ii) The part has accumulated more than 

100 cycles-in-service since the last piece-part 

opportunity inspection, provided that the 

part was not damaged or related to the cause 

for its removal from the engine.’’ 

(g) Except as provided in paragraph (h) of 

this AD, and notwithstanding contrary 

provisions in section 43.16 of the Federal 

Aviation Regulations (14 CFR 43.16), these 

mandatory inspections shall be performed 

only in accordance with the ALS of the 

manufacturer’s ICA. 

(g) Alternative Methods of Compliance 

(AMOC) 

(1) You must perform these mandatory 

inspections using the ALS of the ICA and the 

applicable Engine Manual, unless you 

receive approval to use an AMOC under 

paragraph (h)(2) of this AD. Section 43.16 of 

the Federal Aviation Regulations (14 CFR 

43.16) may not be used to approve alternative 

methods of compliance or adjustments to the 

times in which these inspections must be 

performed. 

(2) 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. 

(h) Maintaining Records of the Mandatory 

Inspections 

(1) You have met the requirements of this 

AD when you revise your copy of the ALS 

of the manufacturer’s ICA as specified in 

paragraph (f) of this AD. For air carriers 

operating under part 121 of the Federal 

Aviation Regulations (14 CFR part 121), you 

have met the requirements of this AD when 

you modify your continuous airworthiness 

air carrier maintenance program as specified 

in paragraph (f) of this AD. You do not need 

to record each piece-part inspection as 

compliance to this AD, but you must 

maintain records of those inspections 

according to the regulations governing your 

operation. For air carriers operating under 

part 121, you may use either the system 

established to comply with section 121.369 

or an alternative accepted by your principal 

maintenance inspector if that alternative: 

(i) Includes a method for preserving and 

retrieving the records of the inspections 

resulting from this AD; 

(ii) Meets the requirements of section 

121.369(c); and 

(iii) Maintains the records either 

indefinitely or until the work is repeated. 

(2) These record keeping requirements 

apply only to the records used to document 

the mandatory inspections required as a 

result of revising the ALS of the 

manufacturer’s ICA as specified in paragraph 

(f) of this AD. These record keeping 

requirements do not alter or amend the 

record keeping requirements for any other 

AD or regulatory requirement. 

(i) Related Information 

For more information about this AD, 

contact Stephen Sheely, Aerospace Engineer, 

Engine & Propeller Directorate, FAA, 12 New 

England Executive Park, Burlington, MA 

01803; phone: (781) 238–7750; fax: (781) 

238–7199; email: stephen.k.sheely@faa.gov. 

Issued in Burlington, Massachusetts, on 

November 15, 2011. 

Peter A. White, 

Manager, Engine & Propeller Directorate, 

Aircraft Certification Service. 

[FR Doc. 2011–30062 Filed 11–21–11; 8:45 am] 

BILLING CODE 4910–13–P 

FEDERAL TRADE COMMISSION 

16 CFR Part 301 

Regulations Under The Fur Products 

Labeling Act 

AGENCY: Federal Trade Commission. 

ACTION: Announcement of public 

hearing. 

SUMMARY: The Federal Trade 

Commission (‘‘FTC’’ or ‘‘Commission’’) 

will hold a public hearing on December 

6, 2011, as part of the congressionally 

mandated review of its Fur Products 

Name Guide. The hearing will allow 

interested parties to present views on 

whether the Commission should amend 

the Fur Products Name Guide. 

DATES: The hearing will be held on 

Tuesday, December 6, 2011, from 9 a.m. 

to 1 p.m. at the FTC’s Satellite Building 

Conference Center, located at 601 New 

Jersey Avenue NW., Washington, DC 

20001. 

REGISTRATION INFORMATION: The hearing 

is open to the public, and there is no fee 

for attendance. If resources are available 


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