30154 Federal Register / Vol. 63, No. 106 /Wednesday, June 3, 1998 / Proposed Rules

under the criteria of the Regulatory

Flexibility Act. A copy of the draft

regulatory evaluation prepared for this

action is contained in the Rules Docket.

A copy of it may be obtained by

contacting the Rules Docket at the

location provided under the caption

ADDRESSES.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation

safety, Safety.

The Proposed Amendment

Accordingly, pursuant to the

authority delegated to me by the

Administrator, the Federal Aviation

Administration proposes to amend 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. Section 39.13 is amended by

adding the following new airworthiness

directive:

British Aerospace Regional Aircraft

(Formerly British Aerospace Regional

Aircraft Limited, Avro International

Aerospace Division; British Aerospace,

PLC; British Aerospace Commercial

Aircraft Limited): Docket 97–NM–128–

AD.

Applicability: All Model BAe 146 series

airplanes; and Model Avro 146–RJ series

airplanes, as listed in British Aerospace

Service Bulletin SB.57–50, Revision 2, dated

March 20, 1997; certificated in any category.

Note 1: This AD applies to each airplane

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

airplanes 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 (b) 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 corrosion from developing on

the underside of the top skin of the center

wing, which could result in reduced

structural integrity of the airplane,

accomplish the following:

(a) Within 2 years after the effective date

of this AD, perform a one-time intrascopic

inspection for ‘‘drill marks’’ and corrosion on

the underside of the wing top skin, in

accordance with British Aerospace Service

Bulletin SB.57–50, Revision 2, dated March

20, 1997.

(1) If no ‘‘drill mark’’ or corrosion is

detected, no further action is required by this

AD.

(2) If any ‘‘drill mark’’ is detected, prior to

further flight, apply protective treatment

coating, in accordance with the service

bulletin.

(3) If any corrosion is detected, prior to

further flight, repair in accordance with a

method approved by the Manager,

International Branch, ANM–116, FAA,

Transport Directorate; and apply protective

treatment coating in accordance with the

service bulletin.

(b) 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,

International Branch, ANM–116. Operators

shall submit their requests through an

appropriate FAA Principal Maintenance

Inspector, who may add comments and then

send it to the Manager, International Branch,

ANM–116.

Note 2: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the International Branch,

ANM–116.

(c) 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.

Note 3: The subject of this AD is addressed

in British airworthiness directive 004–12–96.

Issued in Renton, Washington, on May 27,

1998.

Darrell M. Pederson,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 98–14608 Filed 6–2–98; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 97–CE–52–AD]

RIN 2120–AA64

Airworthiness Directives; Industrie

Aeronautiche e Meccaniche Model

Piaggio P–180 Airplanes

AGENCY: Federal Aviation

Administration (FAA), DOT.

ACTION: Proposed rule; withdrawal.

SUMMARY: This document withdraws a

notice of proposed rulemaking (NPRM)

(62 FR 48502, September 16, 1997) that

would have applied to certain Industrie

Aeronautiche e Meccaniche (I.A.M.)

Model Piaggio P–180 airplanes. The

proposed action would have required

revising the FAA-approved Airplane

Flight Manual (AFM) to specify

procedures that would prohibit flight in

severe icing conditions (as determined

by certain visual cues), limit or prohibit

the use of various flight control devices

while in severe icing conditions, and

provide the flight crew with recognition

cues for, and procedures for exiting

from, severe icing conditions. During

the comment period of this NPRM, the

FAA was notified that this airplane

model does not have a pneumatic deicing system, therefore, the proposed

action would not apply. With this in

mind, the FAA has determined that the

proposed rule should be withdrawn.

This withdrawal does not prevent the

FAA from initiating future rulemaking

on this subject.

FOR FURTHER INFORMATION CONTACT: John

Dow, Aerospace Engineer, FAA, Small

Airplane Directorate, Aircraft

Certification Service, 1201 Walnut, suite

900, Kansas City, Missouri, 64106;

telephone: (816) 426–6934; facsimile

(816) 426–2169.

SUPPLEMENTARY INFORMATION:

Events Leading to This Action

A proposal to amend part 39 of the

Federal Aviation Regulations (14 CFR

part 39) to include an AD that would

apply to certain I.A.M. Model Piaggio P–

180 airplanes of the same type design

that are registered in the United States

was published in the Federal Register

on September 16, 1997 (62 FR 48502).

The action proposed to require revising

the Limitations Section of the FAAapproved AFM to specify procedures

that would:

• require flight crews to immediately

request priority handling from Air

Traffic Control to exit severe icing

conditions (as determined by certain

visual cues);

• prohibit use of the autopilot when

ice is formed aft of the protected

surfaces of the wing, or when an

unusual lateral trim condition exists;

and

• require that all icing wing

inspection lights be operative prior to

flight into known or forecast icing

conditions at night.

This proposed AD would also require

revising the Normal Procedures Section

of the FAA-approved AFM to specify

procedures that would:

• limit the use of the flaps and

prohibit the use of the autopilot when

ice is observed forming aft of the

protected surfaces of the wing, or if

unusual lateral trim requirements or

autopilot trim warnings are

encountered; and
Federal Register / Vol. 63, No. 106 /Wednesday, June 3, 1998 / Proposed Rules 30155

• provide the flight crew with

recognition cues for, and procedures for

exiting from, severe icing conditions.

In addition to the proposed rule

described previously, in September

1997, the FAA issued 24 other similar

proposals that address the subject

unsafe condition on various airplane

models. These 24 proposals also were

published in the Federal Register on

September 16, 1997. Numerous

comments were received on all 24

proposed actions.

Interested persons have been afforded

an opportunity to participate in the

making of this amendment. Due

consideration has been given to the

comment received for this AD. The

comment received is from the

manufacturer and directly relates to the

I.A.M. Model Piaggio P–180 airplane.

The manufacturer states that the I.A.M.

Model Piaggio P–180 does not meet the

criteria of the proposed action. This

airplane has a bleed air and electrothermal wing anti-icing system, not a

pneumatic system. The FAA concurs

and has decided to withdraw the NPRM.

Withdrawal of this NPRM constitutes

only such action, and does not preclude

the agency from issuing future

rulemaking on this issue, nor does it

commit the agency to any course of

action in the future.

Since this action only withdraws an

NPRM, it is neither a proposed nor a

final rule and therefore, is not covered

under Executive Order 12866, the

Regulatory Flexibility Act, or DOT

Regulatory Policies and Procedures (44

FR 11034, February 26, 1979).

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation

Safety, Safety.

The Withdrawal

Accordingly, the notice of proposed

rulemaking, Docket No. 97–CE–52–AD,

published in the Federal Register on

September 16, 1997 (62 FR 48502), is

withdrawn.

Issued in Kansas City, Missouri, on May

22, 1998.

Michael Gallagher,

Manager, Small Airplane Directorate, Aircraft

Certification Service.

[FR Doc. 98–14616 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–142–AD]

RIN 2120–AA64

Airworthiness Directives; Honeywell

IC–600 Integrated Avionics Computers,

as Installed in, but not Limited to,

Learjet Model 45 and EMBRAER Model

EMB–145 Series Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Notice of proposed rulemaking

(NPRM).

SUMMARY: This document proposes the

adoption of a new airworthiness

directive (AD) that is applicable to

certain Honeywell IC–600 integrated

avionics computers. This proposal

would require modification of the

integrated avionics computers. This

proposal is prompted by a report of

integrated avionics computer failures,

which caused a ‘‘random reset’’

condition of the electronic flight

instrument system. The actions

specified by the proposed AD are

intended to prevent such ‘‘random

reset’’ conditions, which could affect

the pilot’s ability to control the airplane.

DATES: Comments must be received by

July 20, 1998.

ADDRESSES: Submit comments in

triplicate to the Federal Aviation

Administration (FAA), Transport

Airplane Directorate, ANM–114,

Attention: Rules Docket No. 98–NM–

142–AD, 1601 Lind Avenue, SW.,

Renton, Washington 98055–4056.

Comments may be inspected at this

location between 9:00 a.m. and 3:00

p.m., Monday through Friday, except

Federal holidays.

The service information referenced in

the proposed rule may be obtained from

Honeywell Inc., Business and

Commuter Aviation Systems, Box

29000, Phoenix, Arizona 85038. This

information may be examined at the

FAA, Transport Airplane Directorate,

1601 Lind Avenue, SW., Renton,

Washington; or at the FAA, Transport

Airplane Directorate, Los Angeles

Aircraft Certification Office, 3960

Paramount Boulevard, Lakewood,

California.

FOR FURTHER INFORMATION CONTACT: J.

Kirk Baker, Aerospace Engineer,

Systems and Equipment Branch, ANM–

130L, FAA, Transport Airplane

Directorate, Los Angeles Aircraft

Certification Office, 3960 Paramount

Boulevard, Lakewood, California

90712–4137; telephone (562) 627–5345;

fax (562) 627–5210.

SUPPLEMENTARY INFORMATION:

Comments Invited

Interested persons are invited to

participate in the making of the

proposed rule by submitting such

written data, views, or arguments as

they may desire. Communications shall

identify the Rules Docket number and

be submitted in triplicate to the address

specified above. All communications

received on or before the closing date

for comments, specified above, will be

considered before taking action on the

proposed rule. The proposals contained

in this notice may be changed in light

of the comments received.

Comments are specifically invited on

the overall regulatory, economic,

environmental, and energy aspects of

the proposed rule. All comments

submitted will be available, both before

and after the closing date for comments,

in the Rules Docket for examination by

interested persons. A report

summarizing each FAA-public contact

concerned with the substance of this

proposal will be filed in the Rules

Docket.

Commenters wishing the FAA to

acknowledge receipt of their comments

submitted in response to this notice

must submit a self-addressed, stamped

postcard on which the following

statement is made: ‘‘Comments to

Docket Number 98–NM–142–AD.’’ The

postcard will be date stamped and

returned to the commenter.

Availability of NPRMs

Any person may obtain a copy of this

NPRM by submitting a request to the

FAA, Transport Airplane Directorate,

ANM–114, Attention: Rules Docket No.

98–NM–142–AD, 1601 Lind Avenue,

SW., Renton, Washington 98055–4056.

Discussion

The FAA has received a report

indicating that, during several test

flights of a Cessna Model XL series

airplane, the screen of the electronic

flight instrument system (EFIS) turned

blank. Investigation has revealed that

the Honeywell IC–600 integrated

avionics computer failed, which

resulted in a ‘‘random reset’’ condition

of the EFIS. During such a ‘‘random

reset’’ condition, the following events

may occur: the primary flight displays

may turn blank, or display a red ‘‘X,’’

and take 10 to 15 seconds to reboot; the

flight director mode may drop; the EFIS

may reset to its default state; and the

autopilot and/or the yaw damper, if

engaged, may disconnect. This ‘‘random

reset’’ condition of the EFIS, if not