### 50945 Federal Register / Vol. 75, No. 159 / Wednesday, August 18, 2010 / Proposed Rules

may not be used to approve alternative methods of compliance or adjustments to the times in which these inspections must be performed.

(j) 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.

Maintaining Records of the Mandatory Inspections

(k) You have met the requirements of this AD when you revise the TLS of the manufacturer’s engine manual 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 maintenance plan to reflect those changes. 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:

(1) Includes a method for preserving and retrieving the records of the inspections resulting from this AD; and

(2) Meets the requirements of section 121.369(c); and

(3) Maintains the records either indefinitely or until the work is repeated.

(l) These record keeping requirements apply only to the records used to document the mandatory inspections required as a result of revising the TLS of the manufacturer’s engine manual 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.

Related Information

(m) Contact Ian Dargin, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: ian.dargin@faa.gov; telephone (781) 238–7178, fax (781) 238–7199, for more
information about this AD.

Issued in Burlington, Massachusetts, on August 6, 2010.
Peter A. White, Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service.

[FR Doc. 2010–20351 Filed 8–17–10; 8:45 am]

**BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION** 

**Federal Aviation Administration**

**14 CFR Part 39**

**[Docket No. FAA–2010–0594; Directorate Identifier 98–ANE–43–AD]** 

**RIN 2120–AA64**

**Airworthiness Directives; Pratt & Whitney JT8D–209, –217, –217A,**  **–217C, and –219 Turbofan Engines**

**AGENCY :**  Federal Aviation Administration (FAA), DOT.

**ACTION :**  Notice of proposed rulemaking (NPRM).

**SUMMARY :**  The FAA is superseding an existing airworthiness directive (AD) for Pratt & Whitney (PW) JT8D–209, –217, –217A, –217C, and –219 turbofan engines. That AD currently requires revisions to the engine manufacturer’s time limits section (TLS) to include enhanced inspection of selected critical life-limited parts at each piece-part opportunity. This AD requires modifying the TLS of the manufacturer’s engine manual and an air carrier’s approved continuous airworthiness maintenance program to incorporate additional inspection requirements. Pratt & Whitney has developed and the FAA has approved improved inspection procedures for the critical life-limited parts. The mandatory inspections are needed to identify those critical rotating parts with conditions, which if allowed to continue in service, could result in uncontained failures. 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.

**DATES :**  We must receive any comments on this proposed AD by October 18,

2010.

**ADDRESSES :**  Use one of the following addresses to comment on this proposed

AD.

• Federal eRulemaking Portal: Go to http://www.regulations.gov and follow the instructions for sending your comments electronically.

• Mail: Docket Management Facility, U.S. 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 :**  Ian Dargin, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: ian.dargin@faa.gov; telephone (781) 238–7178, fax (781) 238–7199.

**SUPPLEMENTARY INFORMATION :** 

Comments Invited

We invite you to send any written relevant data, views, or arguments regarding this proposal. Send your comments to an address listed under

**ADDRESSES** . Include ‘‘Docket No. FAA– 2010–0594; Directorate Identifier 98–
ANE–43–AD ’’ in the subject line of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of the proposed AD. We will consider all comments received by the closing date and may amend the proposed AD in light 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 with FAA personnel concerning this proposed 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 proposed 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.

Discussion

On August 24, 2005, the FAA issued airworthiness directive (AD) 2005–18– 02, Amendment 39–14242 (70 FR 52004, September 1, 2005), to require revisions to the TLS of the manufacturer’s engine manual for these engines to include required enhancedinspection of selected critical lifelimited parts at each piece-part opportunity.


### 50946 Federal Register / Vol. 75, No. 159 / Wednesday, August 18, 2010 / Proposed Rules

New Inspection Procedures

Since the issuance of that AD, Pratt & Whitney has developed and the FAA has approved improved inspection procedures for the critical life-limited parts. The mandatory inspections are needed to identify those critical rotating parts with conditions, which if allowed to continue in service, could result in uncontained failures. This proposal would add new inspection methods to the TLS of the manufacturer’s engine manual and an air carrier’s approved continuous airworthiness maintenance program to incorporate additional inspection requirements for 1st stage compressor hubs, 3rd stage turbine disks, and 4th stage turbine disks.

FAA’s Determination of an Unsafe Condition and Proposed Actions

Since an unsafe condition has been identified that is likely to exist or develop on other PW JT8D–209, –217, –217A, –217C, and –219 turbofan engines of the same type design, the proposed AD would supersede AD 2005–18–02 to add new inspection methods for 1st stage compressor hubs, 3rd stage turbine disks, and 4th stage turbine disks. For reference, this proposed AD carries forward the requirements from AD 2005–18–02. Also for reference, parts that have an Engine Manual Inspection Task and/or Sub Task Number reference updated in the table in the compliance section of this AD, are identified by an asterisk (*) that precedes the part nomenclature.

Costs of Compliance

We estimate that this proposed AD would affect 1,143 JT8D–209, –217, –217A, –217C, and –219 turbofan engines installed on airplanes of U.S. registry. We also estimate that it would take about 10 work-hours per engine to perform the proposed actions, and thatthe average labor rate is $85 per workhour. Since this is an added inspection requirement, included as part of the normal maintenance cycle, no additional part costs are involved. Based on these figures, we estimate the total cost of the proposed AD to U.S. operators to be $971,550.

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 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. Would 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 regulatory evaluation of the estimated costs to comply with this proposed AD. See the **ADDRESSES** section for a location to examine the regulatory evaluation.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Safety.

The Proposed Amendment

Under the authority delegated to me by the Administrator, the Federal Aviation Administration 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 Amendment 39–14242 (70 FR 52004, September 1, 2005) and by adding a new airworthiness directive to read as follows: Pratt & Whitney: Docket No. FAA–2010– 0594; Directorate Identifier 98–ANE–43–

AD.

Comments Due Date

(a) The Federal Aviation Administration (FAA) must receive comments on this airworthiness directive (AD) action by October 18, 2010.

Affected ADs

(b) This AD supersedes AD 2005–18–02,
Amendment 39–14242.

Applicability

(c) This AD applies to Pratt & Whitney (PW) JT8D–209, –217, –217A, –217C, and –219 turbofan engines. These engines are installed on, but not limited to Boeing 727 and McDonnell Douglas MD–80 series airplanes.

Unsafe Condition

(d) This AD results from the need to require enhanced inspection of selected critical life-limited parts of JT8D–209, –217, –217A, –217C, and –219 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.

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) Within the next 30 days after the effective date of this AD, (1) revise the Time Limits section (TLS) of the manufacturer’s engine manual, part number 773128, as appropriate for PW JT8D–209, –217, –217A, –217C, and –219 turbofan engines, and (2) for air carriers, revise the approved mandatory inspections section of the continuous airworthiness maintenance program, by adding the following:

‘‘Critical Life Limited Part Inspection A. Inspection Requirements: (1) This section contains the definitions for individual engine piece-parts and the inspection procedures, which are necessary, when these parts are removed from the engine.

(2) It is necessary to do the inspection procedures of the piece-parts in Paragraph B
when:

(a) The part is removed from the engine and disassembled to the level specified in paragraph B and

(b) The part has accumulated more than 100 cycles since the last piece part inspection, provided that the part is not damaged or related to the cause of its removal from the engine.

(3) The inspections specified in this section do not replace or make unnecessary other recommended inspections for these parts or other parts.

B. Parts Requiring Inspection.

Note: Piece part is defined as any of the listed parts with all the blades removed.


### 50947 Federal Register / Vol. 75, No. 159 / Wednesday, August 18, 2010 / Proposed Rules

Description Section Inspection No.

Hub (Disk), 1st Stage Compressor: * Hub Detail—All P/Ns ........................................................................................................................................ 72–33–31 –03, –04, –05 * Hub Assembly—All P/Ns .................................................................................................................................. 72–33–31 –03, –04, –05 Disk, 13th Stage Compressor—All P/Ns ........................................................................................... ........................ 72–36–47 –02 HP Turbine, First Stage: Rotor Assembly—All P/Ns ........................................................................................................ .......................... 72–52–02 –04 Disk—All P/Ns .................................................................................................................. .................................. 72–52–02 –03 Disk, 2nd Stage Turbine—All P/Ns ............................................................................................... ............................ 72–53–16 –02 * Disk, 3rd Stage Turbine—All P/Ns .............................................................................................. ............................ 72–53–17 –02, –03 * Disk, 4th Stage Turbine—All P/Ns .............................................................................................. ............................ 72–53–18 –02, –03’’

(g) The parts that have an Engine Manual Inspection Task and or Sub Task Number reference updated in the table of this AD, are identified by an asterisk (*) that precedes the part nomenclature.

(h) Except as provided in paragraph (i) 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 TLS of the manufacturer’s engine manual.

Alternative Methods of Compliance (AMOC)

(i) You must perform these mandatory inspections using the TLS of the manufacturer’s engine manual unless you receive approval to use an AMOC under paragraph (j) 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.

(j) 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.

Maintaining Records of the Mandatory Inspections

(k) You have met the requirements of this AD when you revise the TLS of the manufacturer’s engine manual 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 maintenance plan to reflect those changes. 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 § 121.369 or an alternative accepted by your principal maintenance inspector if that alternative:

(1) Includes a method for preserving and retrieving the records of the inspections resulting from this AD; and

(2) Meets the requirements of § 121.369(c); and

(3) Maintains the records either indefinitely or until the work is repeated.

(l) These recordkeeping requirements apply only to the records used to document the mandatory inspections required as a result of revising the TLS of the manufacturer’s engine manual 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.

Related Information

(m) Contact Ian Dargin, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: ian.dargin@faa.gov; telephone (781) 238–7178, fax (781) 238–7199, for more
information about this AD.

Issued in Burlington, Massachusetts, on August 10, 2010.
Francis A. Favara, Manager, Engine and Propeller Directorate, Aircraft Certification Service.

[FR Doc. 2010–20350 Filed 8–17–10; 8:45 am]

**BILLING CODE 4910–13–P**

**DEPARTMENT OF TRANSPORTATION**

**Federal Aviation Administration**

**14 CFR Part 71**

**[Docket No. FAA–2010–0605; Airspace Docket No. 10–AGL–10]** 

**Proposed Amendment of Class E Airspace; Kokomo, IN** 

**AGENCY :**  Federal Aviation Administration (FAA), DOT.

**ACTION :**  Notice of proposed rulemaking (NPRM).

**SUMMARY :**  This action proposes to amend Class E airspace at Kokomo, IN. Additional controlled airspace is necessary to accommodate new Standard Instrument Approach Procedures (SIAPs) at Kokomo Municipal Airport. Minor adjustments to geographic coordinates also would be made. This action also would change the name of Logansport Municipal Airport. The FAA is taking this action to enhance the safety and management of Instrument Flight Rules (IFR) operations at the airport.

**DATES :**  0901 UTC. Comments must be received on or before October 4, 2010.

**ADDRESSES :**  Send comments on this proposal to the U.S. Department of Transportation, Docket Operations, 1200 New Jersey Avenue SE., West Building Ground Floor, Room W12–140, Washington, DC 20590–0001. You must identify the docket number FAA–2010– 0605/Airspace Docket No. 10–AGL–10, at the beginning of your comments. You may also submit comments through the

Internet at http://www.regulations.gov. You may review the public docket containing the proposal, any comments received, and any final disposition in person in the Dockets Office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The Docket Office (telephone 1–800–647– 5527) is on the ground floor of the building at the above address.

**FOR FURTHER INFORMATION CONTACT :**  Scott Enander, Central Service Center, Operations Support Group, Federal Aviation Administration, Southwest Region, 2601 Meacham Blvd., Fort Worth, TX 76137; telephone: 817–321–

7716.

**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 and be submitted in triplicate to the address listed above. Commenters wishing the FAA to acknowledge receipt of their comments on this notice must submit with those comments a self-addressed, stamped postcard on which the following statement is made: ‘‘Comments to Docket No. FAA–2010–0605/Airspace Docket No. 10–AGL–10. ’’ The postcard will be date/time stamped and returned to the commenter.