30124 Federal Register / Vol. 63, No. 106 /Wednesday, June 3, 1998 /Rules and Regulations

Aviation Laboratories, 910 Maria Street,

Kenner, LA 70062, 504–469–6751

or

Spectro Oil Analysis, Palace Gate, High

Street, Oldham, Hook, Hampshire, RG 291

NP, United Kingdom.

Send documentation referencing this AD or

ASB along with the sample.

(ix) Send the results of the analysis to

Allison as follows: Manager, AE Customer

Support, Large Commercial Engines, fax

(317) 230–4010.

(x) An engine found with paste either after

the engine ground run-up or during

subsequent checks performed in accordance

with this AD may not be operated again

without the approval of the Manager, Chicago

Aircraft Certification Office.

(b) For Allison AE 3007C series engines,

within 8 flight hours after the effective date

of this AD, accomplish the following in

accordance with Allison Engine ASB No. AE

3007C–A–79–018, Revision 3, dated April 21,

1998:

(1) Remove the center sump magnetic chip

collector plug (non-indicating) on each

engine and examine it for paste. (See Note 2)

(2) If no paste is found, reinstall the center

sump magnetic chip collector, perform an oil

leak check, and thereafter inspect both

engines at intervals not to exceed 8 flight

hours.

(3) If paste is found, accomplish the

following prior to further flight:

(i) Remove the engine from service if paste

was previously found on the same engine

during any previous checks performed in

accordance with this AD.

(ii) Collect the paste on a clean white

paper. Cover the sample with clear tape and

retain it for analysis.

(iii) Examine the O-ring for damage and

replace as necessary.

(iv) Clean the center sump magnetic chip

collector plug.

(v) Reinstall the center sump magnetic chip

collector plug.

(vi) Perform a ground run-up of the engine

as follows:

(A) Ground Idle for 5 minutes.

(B) Maximum Takeoff for 2 minutes.

(C) 50% N1 (Fan speed) for 5 minutes.

(D) Ground Idle for 3 minutes.

(E) Stop the engine.

(vii) Re-examine the center sump magnetic

chip collector plug for paste. If paste is

found, remove the engine from service. If no

paste is found, thereafter inspect in

accordance with paragraph (b)(2) of this AD.

(viii) Send any removed paste to a

laboratory or facility capable of analysis with

a scanning electron microscope and an

energy dispersive x-ray microanalyzer for

analysis. Send documentation referencing

this AD or ASB along with the sample. (See

Note 3)

(ix) Send the results of the analysis to

Allison as follows: Manager, AE Customer

Support, Large Commercial Engines, fax

(317) 230–4010.

(x) An engine found with paste either after

the engine ground run-up or during

subsequent checks performed in accordance

with this AD may not be operated again

without the approval of the Manager, Chicago

Aircraft Certification Office.

(c) For Allison Engine Company AE 3007A

series and AE 3007C series engines, remove

from service No. 4 main engine bearings,

P/N 23062504, at the next engine shop visit,

and replace with serviceable parts.

Installation of an improved No. 4 main

engine bearing constitutes terminating action

to the repetitive magnetic chip detector

checks required by paragraphs (a) and (b) of

this AD.

(d) For the purpose of this AD, the

following definitions apply:

(1) A serviceable part is defined as any No.

4 main engine bearing P/N other than

23062504.

(2) A shop visit is defined as any

maintenance action resulting in the

separation of any major engine flange.

(e) 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 Manager, Chicago

Aircraft Certification Office. Operators shall

submit their requests through an appropriate

FAA Principal Maintenance Inspector, who

may add comments and then send it to the

Manager, Chicago Aircraft Certification

Office.

Note 4: Information concerning the

existence of approved alternative methods of

compliance with this airworthiness directive,

if any, may be obtained from the Chicago

Aircraft Certification Office.

(f) 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 aircraft to

a location where the check requirements of

this AD can be accomplished.

(g) The actions required by this AD shall

be accomplished in accordance with the

following Allison Engine Company ASBs:

Document No. Page Revision Date

AE 3007A–A–79–014 ...................................................................................................................................... 1–7 4 April 14, 1998.

Total Pages: 7.

AE 3007C–A–79–018 ...................................................................................................................................... 1–6 3 April 21, 1998.

Total Pages: 6.

This incorporation by reference was

approved by the Director of the Federal

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

and 1 CFR part 51. Copies may be obtained

from Allison Engine Company, P.O. Box 420,

Speed Code U–15, Indianapolis, IN 46206–

0420; telephone (317) 230–6674. Copies may

be inspected at the FAA, New England

Region, Office of the Regional Counsel, 12

New England Executive Park, Burlington,

MA; or at the Office of the Federal Register,

800 North Capitol Street, NW., suite 700,

Washington, DC.

(h) This amendment supersedes priority

letter AD 98–02–09, issued January 16, 1998.

(i) This amendment becomes effective on

June 18, 1998.

Issued in Burlington, Massachusetts, on

May 22, 1998.

Thomas A. Boudreau,

Acting Manager, Engine and Propeller

Directorate, Aircraft Certification Service.

[FR Doc. 98–14339 Filed 6–2–98; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 98–NM–22–AD; Amendment

39–10410; AD 98–12–05]

RIN 2120–AA64

Airworthiness Directives; Airbus Model

A320–111 Series Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Direct final rule; confirmation of

effective date.

SUMMARY: This amendment adopts a

new airworthiness directive (AD) that is

applicable to certain Airbus Model

A320–111 series airplanes. This

amendment requires repetitive

inspections to detect cracking around

the attachment holes for the access

panels in the lower skin of the wing;

and repair, if necessary. This

amendment is prompted by issuance of

mandatory continuing airworthiness

information by a foreign civil

airworthiness authority. The actions

specified in this AD are intended to

detect and correct such cracking, which

could result in reduced structural

integrity of the airplane.

EFFECTIVE DATE: The direct final rule

published at 63 FR 13508 is effective on

June 18, 1998.

FOR FURTHER INFORMATION CONTACT:

Norman B. Martenson, Manager,

International Branch, ANM–116, FAA,

Transport Airplane Directorate, 1601

Lind Avenue, SW., Renton, Washington

98055–4056; telephone (425) 227–2110;

fax (425) 227–1149.

SUPPLEMENTARY INFORMATION: The FAA

published this direct final rule with

request for comments in the Federal
Federal Register / Vol. 63, No. 106 /Wednesday, June 3, 1998 /Rules and Regulations 30125

Register on March 20, 1998 (63 FR

13508). The FAA uses the direct final

rulemaking procedure for a noncontroversial rule where the FAA

anticipates that there will be no adverse

public comment. This direct final rule

advised the public that no adverse

comments were anticipated, and that

unless a written adverse comment, or a

written notice of intent to submit such

an adverse comment, was received

within the comment period, the

regulation would become effective on

June 18, 1998.

Two comments were received. Both

commenters support the rule. However,

one of the commenters requests

clarification of the applicability of the

rule, which is stated in the direct final

rule as follows:

‘‘Applicability: Model A320–111

series airplanes, as identified in Airbus

Service Bulletin A320–57–1056,

Revision 1, dated July 15, 1997,

including Appendix 1; certificated in

any category.’’

The commenter notes that when an

operator is not affected by a service

bulletin, that operator only receives a

copy of the summary section of the

service bulletin. The summary of a

service bulletin provides a list of

affected operators; it does not provide

manufacturer’s serial numbers for the

affected airplanes. This results in

difficulty for an operator, a leasing

group, or other non-technical group to

evaluate any pending or applicable rules

against a specific airplane serial

number. Therefore, the commenter

proposes that the applicability of the

rule reference specific serial numbers

for affected airplanes, as follows.

‘‘Applicability: Model A320 series

airplanes having manufacturer’s serial

numbers 002 through 008 inclusive; 010

through 014 inclusive; and 016 through

018 inclusive; certificated in any

category.’’

The FAA concurs that this AD applies

to the airplanes identified by the

commenter. The applicability, as

presented in the rule, is equivalent to

the applicability suggested by the

commenter. Therefore, the FAA finds

that no change to the rule is necessary.

As the commenter points out, those

operators that are affected by the rule

will receive the entire service bulletin

(not just the summary) and will,

therefore, be informed of the specific

serial numbers to which this AD

applies.

The same commenter also requests

clarification of the cost impact

information. The commenter notes that

this information specifies that there are

118 Model A320–111 airplanes of U.S.

registry. The commenter indicates that

only 22 Model A320–100 series

airplanes were manufactured, and that

none of these are on the U.S. Register.

The commenter believes that the

number 118 reflects all Model A319 and

A320 airplanes on the U.S. Register, and

not the actual number of Model A320–

100 series airplanes. The commenter

adds that Model A319–100 series

airplanes are being manufactured, and

are on the U.S. Register, but are not

considered to be Model A320–100 series

airplanes.

The FAA concurs with the

clarification provided by the

commenter. The number of airplanes

affected by the direct final rule reflects

the FAA’s estimation of the total

number of Airbus Model A319, A320,

and A321 series airplanes currently on

the U.S. register. However, no change to

the direct final rule is necessary, since

it indicates that none of the affected

airplanes are on the U.S. Register.

No adverse comments were received,

and thus this notice confirms that this

final rule will become effective on that

date.

Issued in Renton, Washington, on May 27,

1998.

John J. Hickey,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 98–14609 Filed 6–2–98; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 71

[Airspace Docket No. 98–AWP–14]

Revision of Class D and Establishment

of Class E Airspace; Yuma MCAS–

Yuma International Airport, AZ

AGENCY: Federal Aviation

Administration (FAA), DOT.

ACTION: Direct final rule; request for

comments.

SUMMARY: This action will amend the

Class D airspace area operating times

and establish a Class E airspace surface

area at Yuma MCAS–Yuma

International Airport, Yuma, AZ. In

April of 1998 the U.S. Marines reduced

the hours of operation of the Air Traffic

Control Tower (ATCT) at Yuma MCAS.

The reduction of the ATCT hours of

operation has made this action

necessary. The intended effect of this

action is to modify the hours of the

Yuma Class D airspace area in the legal

description of the controlled airspace

and establish a Class E airspace surface

area to contain instrument operations

during times the ATCT is closed. This

action does not involve a change in the

dimensions or operating requirements of

that airspace containing Instrument

Flight Rules (IFR) operations at Yuma

MCAS–Yuma International Airport,

Yuma, AZ.

DATES: Effective: 0901 UTC August 13,

1998. Comment date: Comments for

inclusion in the Rules Docket must be

received on or before July 6, 1998.

ADDRESSES: Send comments on the

direct final rule in triplicate to: Federal

Aviation Administration, Attn:

Manager, Airspace Branch, AWP–520,

Docket No. 98–AWP–14, Air Traffic

Division, P.O. Box 92007, Worldway

Postal Center, Los Angeles, California

90009.

The official docket may be examined

in the Office of the Assistant Chief

Counsel, Western-Pacific Region,

Federal Aviation Administration, Room

6007, 15000 Aviation Boulevard,

Lawndale, California 90261.

An informal docket may also be

examined during normal business hours

at the Office of the Manager, Airspace

Branch, Air Traffic Division at the above

address.

FOR FURTHER INFORMATION CONTACT:

Debra Trindle, Airspace Specialist,

Airspace Branch, AWP–520, Air Traffic

Division, Western-Pacific Region,

Federal Aviation Administration, 15000

Aviation Boulevard, Lawndale,

California 90261, telephone (310) 725–

6613.

SUPPLEMENTARY INFORMATION: This

action will change the airspace legal

description to reflect the new operating

hours of the Class D airspace area of the

Yuma MCAS–Yuma International

Airport and establish a Class E airspace

surface area to be effective during times

the Yuma ATCT is closed. The 1998

reduction of the ATCT hours of

operation has made this action

necessary. The intended effect of this

action is to modify the hours of the

Yuma Class D airspace area in the legal

description of the controlled airspace

and establish a Class E Airspace surface

area to contain instrument operations

during times the ATCT is closed. Class

D airspace areas are published in

Paragraph 5000 and Class E airspace

surface areas are published in Paragraph

6002 of FAA Order 7400.9D dated

September 10, 1997, and effective

September 16, 1997, which is

incorporated by reference in 14 CFR

71.1. The Class D and E airspace

designation listed in this document

would be published subsequently in

this Order.