40228 Federal Register / Vol. 63, No. 144 /Tuesday, July 28, 1998 / Proposed Rules

Applicability: Pratt & Whitney (PW) JT8D–

1, –1A, –1B, –7, –7A, –7B, –9, –9A, –11, –15,

–15A, –17, –17A, –17R, and –17AR series

turbofan engines, installed on but not limited

to Boeing 727 and 737 series and McDonnell

Douglas DC–9 series aircraft.

Note 1: This airworthiness directive (AD)

applies to each engine identified in the

preceding applicability provision, regardless

of whether it has been modified, altered, or

repaired in the area subject to the

requirements of this AD. For engines that

have been modified, altered, or repaired so

that the performance of the requirements of

this AD is affected, the owner/operator must

request approval for an alternative method of

compliance in accordance with paragraph (c)

of this AD. The request should include an

assessment of the effect of the modification,

alteration, or repair on the unsafe condition

addressed by this AD; and, if the unsafe

condition has not been eliminated, the

request should include specific proposed

actions to address it.

Compliance: Required as indicated, unless

accomplished previously.

To prevent critical life-limited rotating

engine part failure, which could result in an

uncontained engine failure and damage to

the airplane, accomplish the following:

(a) Within the next 30 days after the

effective date of this AD, revise the Time

Limits Section (TLS) of the Pratt & Whitney

(PW) JT8D–1, –1A, –1B, –7, –7A, –7B, –9,

–9A, –11, –15, –15A, –17, –17A, –17R, and

–17AR Turbofan Engines Engine Manual

(EM), part number 481672, and for air carrier

operations revise the approved continuous

airworthiness maintenance program, by

adding the following:

‘‘6. Critical Life Limited Part Inspection

A. Inspection Requirements:

(1) This section has 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 was not

damaged by or related to the cause for it’s

removal from the engine.

(3) The inspections specified in this

section do not replace or make not necessary

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.

Engine manual

description Section Inspection

Hub (Disk), 1st

Stage Compressor:

491201 ......... 72–33–31 –XX,–02,–03

496501 ......... 72–33–31 –XX,–02,–03

504101 ......... 72–33–31 –XX,–02,–03

Engine manual

description Section Inspection

515201 ......... 72–33–31 –XX,–02,–03

594301 ......... 72–33–31 –XX,–02,–03

640501 ......... 72–33–31 –XX,–02,–03

640601 ......... 72–33–31 –XX,–02,–03

743301 ......... 72–33–31 –XX,–02,–03

749701 ......... 72–33–31 –XX,–02,–03

749801 ......... 72–33–31 –XX,–02,–03

750001 ......... 72–33–31 –XX,–02,–03

750101 ......... 72–33–31 –XX,–02,–03

778901 ......... 72–33–31 –XX,–02,–03

791401 ......... 72–33–31 –XX,–02,–03

791501 ......... 72–33–31 –XX,–02,–03

791601 ......... 72–33–31 –XX,–02,–03

791701 ......... 72–33–31 –XX,–02,–03

791801 ......... 72–33–31 –XX,–02,–03

806001 ......... 72–33–31 –XX,–02,–03

806101 ......... 72–33–31 –XX,–02,–03

817401 ......... 72–33–31 –XX,–02,–03

844401 ......... 72–33–31 –XX,–02,–03

845401 ......... 72–33–31 –XX,–02,–03

848001 ......... 72–33–31 –XX,–02,–03

848101 ......... 72–33–31 –XX,–02,–03

Disk, 2nd

Stage

Compressor.

72–33–31 –XX,–02,–03

482502 ......... 72–33–33 –XX

502502 ......... 72–33–33 –XX

520602 ......... 72–33–33 –XX

570302 ......... 72–33–33 –XX

570402 ......... 72–33–33 –XX

678202 ......... 72–33–33 –XX

730202 ......... 72–33–33 –XX

730302 ......... 72–33–33 –XX

730402 ......... 72–33–33 –XX

740502 ......... 72–33–33 –XX

745702 ......... 72–33–33 –XX

745902 ......... 72–33–33 –XX

746002 ......... 72–33–33 –XX

746802 ......... 72–33–33 –XX

760402 ......... 72–33–33 –XX

760502 ......... 72–33–33 –XX

807502 ......... 72–33–33 –XX

5002402–01 72–33–33 –XX

790832 (Disk

assembly).

72–33–33 –XX’’

(b) Except as provided in paragraph (c) 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 Time Limits

section in the EM.

(c) An alternative method of compliance or

adjustment of the compliance time that

provides an acceptable level of safety may be

used if approved by the Engine Certification

Office. Operators shall submit their requests

through an appropriate FAA Principal

Maintenance Inspector (PMI), who may add

comments and then send it to the Engine

Certification Office.

Note 2: Information concerning the

existence of approved alternative methods of

compliance with this airworthiness directive,

if any, may be obtained from the Engine

Certification Office.

(d) Special flight permits may be issued in

accordance with sections 21.197 and 21.199

of the Federal Aviation Regulations (14 CFR

21.197 and 21.199) to operate the airplane to

a location where the requirements of this AD

can be accomplished.

(e) The records of the mandatory

inspections required as a result of revising

the Time Limits section in the EM and the

air carrier’s continuous airworthiness

maintenance program as provided by

paragraph (a) of this AD shall be maintained

by FAA-certificated air carriers which have

an approved continuous airworthiness

maintenance program in accordance with the

record keeping system currently specified in

their manual required by sections 121.369 of

the Federal Aviation Regulations (14 CFR

121.369); or, in lieu of the record showing the

current status of each mandatory inspection

required by sections 121.380(a)(2)(vi) of the

Federal Aviation Regulations (14 CFR

121.380(a)(2)(vi)), certificated air carriers

may establish an approved alternate system

of record retention that provides a method for

preservation and retrieval of the maintenance

records that include the inspections resulting

from this AD, and include the policy and

procedures for implementing this alternate

method in the air carrier’s maintenance

manual required by sections 121.369 (c) of

the Federal Aviation Regulations (14 CFR

121.369 (c)); however, the alternate system

must be accepted by the appropriate PMI and

require the maintenance records be

maintained either indefinitely or until the

work is repeated.

Note 3: These record keeping requirements

apply only to the records used to document

the mandatory inspections required as a

result of revising Chapter 05–11–00, titled

Time Limits, in the EM as provided in

paragraph (a) of this AD, and do not alter or

amend the record keeping requirements for

any other AD or regulatory requirement.

Issued in Burlington, Massachusetts, on

July 16, 1998.

Jay J. Pardee,

Manager, Engine and Propeller Directorate,

Aircraft Certification Service.

[FR Doc. 98–19633 Filed 7–27–98; 8:45 am]

BILLING CODE 4910–13–P

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 71

[Airspace Docket No. 98–ACE–23]

Proposed Establishment of Class E

Airspace; Guthrie, IA

AGENCY: Federal Aviation

Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking.

SUMMARY: This document proposes to

establish Class E airspace area at

Guthrie County Regional Airport,

Guthrie, IA. The FAA has developed

Global Positioning System (GPS)
Federal Register / Vol. 63, No. 144 /Tuesday, July 28, 1998 / Proposed Rules 40229

Runway (RWY) 36 and Nondirectional

Radio Beacon (NDB) RWY 18 Standard

Instrument Approach Procedures

(SIAPs) to serve Guthrie County

Regional Airport, IA. Controlled

airspace extending upward from 700

feet Above Ground Level (AGL) is

necessary to accommodate these SIAPs

and for Instrument Flight Rules (IFR)

operations at this airport. The area will

contain the new GPS RWY 36 and NDB

RWY 18 in controlled airspace. The

intended effect of this rule is to provide

controlled Class E airspace for aircraft

executing the GPS RWY 36 and NDB

RWY 18 SIAPs and to segregate aircraft

using instrument approach procedures

in instrument conditions from aircraft

operating in visual conditions.

DATES: Comments must be received on

or before September 11, 1998.

ADDRESSES: Send comments on the

proposal in triplicate to : Manager,

Airspace Branch, ACE–520, Federal

Aviation Administration, Docket No.

98–ACE–23, 601 East 12th Street,

Kansas City, MO 64106.

The official docket may be examined

in the Office of the Regional Counsel for

the Central Region at the same address

between 9:00 a.m. and 3:00 p.m.,

Monday through Friday, except Federal

holidays. An informal docket may also

be examined during normal business

hours in the office of the Manager,

Airspace Branch, Air Traffic Division, at

the address listed above.

FOR FURTHER INFORMATION CONTACT:

Kathy Randolph, Air Traffic Division,

Airspace Branch, ACE–520C, Federal

Aviation Administration, 601 East 12th

Street, Kansas City, Missouri 64106;

telephone number (816) 426–3408.

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, economic, environmental,

and energy-related aspects of the

proposal. Communications should

identify the airspace docket number 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 Airspace Docket No. 98–

ACE–23.’’ The postcard will be date/

time stamped and returned to the

commenter. All communications

received on or before the closing date

for comments will be considered before

taking action on the proposed rule. The

proposal contained in this notice may

be changed in light of comments

received. All comments submitted will

be available for examination in the

Rules Docket both before and after the

closing date for comments. A report

summarizing each substantive public

contact with FAA personnel concerned

with this rulemaking will be filed in the

docket.

Availabiliy of NPRMs

Any person may obtain a copy of this

Notice of Proposed Rulemaking (NPRM)

by submitting a request to the Federal

Aviation Administration, Office of

Public Affairs, Attention: Public Inquiry

Center, APA–230, 800 Independence

Avenue, SW., Washington, D.C. 20591,

or by calling (202) 267–3484.

Communications must identify the

notice number of this NPRM. Persons

interested in being placed on a mailing

list for future NPRMs should also

request a copy of Advisory Circular No.

11–2A, which describes the procedures.

The Proposal

The FAA is considering a amendment

to 14 CFR part 71 to establish Class E

airspace area at Guthrie, IA. The FAA

has developed GPS RWY 36 and NDB

RWY 18 SIAPs to serve Guthrie County

Regional Airport, Guthrie, IA. The

intended effect of this action is to

provide segregation of aircraft operating

under Instrument Flight Rules (IFR)

from aircraft operating in visual weather

conditions. The area would be depicted

on appropriate aeronautical charts

thereby enabling pilots to

circumnavigate the area or otherwise

comply with IFR procedures. Class E

airspace areas extending upward from

700 feet or more above the surface of the

earth are published in paragraph 6005 of

FAA Order 7400.9E, dated September

10, 1997, and effective September 16,

1997, which is incorporated by

reference in 14 CFR 71.1. The Class E

airspace designation listed in this

document would be published

subsequently in the Order.

The FAA has determined that this

proposed regulation only involves an

established body of technical

regulations for which frequent and

routine amendments are necessary to

keep them operationally current.

Therefore, this proposed regulation (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); and (3)

does not warrant preparation of a

Regulatory Evaluation as the anticipated

impact is so minimal. Since this is a

routine matter that will only affect air

traffic procedures and air navigation, it

is certified that this proposed rule will

not have a significant economic impact

on a substantial number of small entities

under the criteria of the Regulatory

Flexibility Act.

List of Subjects in 14 CFR Part 71

Airspace, Incorporation by reference,

Navigation (air).

The Proposed Amendment

Accordingly, pursuant to the

authority delegated to me, the Federal

Aviation Administration proposes to

amend 14 CFR part 71 as follows:

PART 71—DESIGNATION OF CLASS A,

CLASS B, CLASS C, CLASS D, AND

CLASS E AIRSPACE AREAS;

AIRWAYS; ROUTES; AND REPORTING

POINTS

1. The authority citation for part 71

continues to read as follows:

Authority: 49 U.S.C. 106(g), 40103, 40113,

40120; E.O. 10854, 24 FR 9565, 3 CFR, 1959–

1963 Comp., p. 389.

§ 71.1 [Amended]

2. The incorporation by reference in

14 CFR 71.1 of Federal Aviation

Administration Order 7400.9E, Airspace

Designations and Reporting Points,

dated September 10, 1997, and effective

September 16, 1997, is amended as

follows:

Paragraph 6005 Class E airspace areas

extending upward from 700 feet or more

above the surface of the earth.

* * * * *

ACE IA E5 Guthrie, IA [New]

Guthrie County Regional Airport, IA

(Lat 41°41′16′′ N., long. 94°26′07′′ W.)

Guthrie Center NDB

(Lat 41°40′55′′ N., long. 94°26′00′′ W.)

That airspace extending upward from 700

feet above the surface within a 6.4-mile

radius of the Guthrie Country Regional

Airport and within 2.5 miles each side of the

350° bearing from the Guthrie Center NDB

extending from the 6.4-mile radius to 7 miles

north of the airport.

* * * * *

Issued in Kansas City, MO, on July 10,

1998.

Christopher R. Blum,

Acting Manager, Air Traffic Division, Central

Region.

[FR Doc. 98–20115 Filed 7–27–98; 8:45 am]

BILLING CODE 4910–13–M