Federal Register / Vol. 62, No. 237 / Wednesday, December 10, 1997 / Rules and Regulations 65011

1996, in accordance with the procedures

specified in the alert service bulletin.

(c) Within 24 months after the effective

date of this AD, modify the remaining refuel/

defuel tube assemblies, as specified in Part 3

of the Accomplishment Instructions of

Bombardier Alert Service Bulletin S.B. A8–

28–20, Revision ‘A,’ dated September 10,

1996, in accordance with the procedures

specified in the alert service bulletin.

(d) Accomplishment of the modifications

required by paragraphs (b) and (c) of this AD

constitutes terminating action for the

repetitive inspections required by paragraph

(a) of this AD.

(e) As of the effective date of this AD, no

person shall install a refuel/defuel tube

assembly having part number 82820107–007,

82821015–003, 82820108–005, 82820245–

001, 82820246–001, 82820247–001, or

82821014–001, on any airplane.

(f) 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, New York

Aircraft Certification Office (ACO), FAA,

Engine and Propeller Directorate. Operators

shall submit their requests through an

appropriate FAA Principal Maintenance

Inspector, who may add comments and then

send it to the Manager, New York ACO.

Note 2: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the New York ACO.

(g) Special flight permits may be issued in

accordance with §§ 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.

(h) The actions shall be done in accordance

with Bombardier Alert Service Bulletin S.B.

A8–28–20, Revision ‘A,’ dated September 10,

1996. 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 Bombardier, Inc., Canadair, Aerospace

Group, P.O. Box 6087, Station A, Montreal,

Quebec H3C 3G9, Canada. Copies may be

inspected at the FAA, Transport Airplane

Directorate, 1601 Lind Avenue, SW., Renton,

Washington; or at the FAA, Engine and

Propeller Directorate, New York Aircraft

Certification Office, 10 Fifth Street, Third

Floor, Valley Stream, New York; or at the

Office of the Federal Register, 800 North

Capitol Street, NW., suite 700, Washington,

DC.

Note 3: The subject of this AD is addressed

in Canadian airworthiness directive CF–96–

14, dated August 20, 1996.

(i) This amendment becomes effective on

January 14, 1998.

Issued in Renton, Washington, on

December 2, 1997.

Darrell M. Pederson,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 97–32118 Filed 12–9–97; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 97–NM–104–AD; Amendment

39–10237; AD 97–25–13]

RIN 2120–AA64

Airworthiness Directives; British

Aerospace BAe Model ATP Airplanes

and Model HS 748 Series Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment adopts a

new airworthiness directive (AD),

applicable to certain British Aerospace

BAe Model ATP airplanes and all Model

HS 748 series airplanes, that requires

inspection of the main hydraulic

accumulator for corrosion, and

corrective actions, if necessary. This

amendment is prompted by issuance of

mandatory continuing airworthiness

information by a foreign civil

airworthiness authority. The actions

specified by this AD are intended to

detect and correct such corrosion,

which could result in loss of certain

hydraulic system functions, including

nose wheel steering, hydraulic lowering

of the landing gear, and main wheel

brakes, which are essential for safe

operation of the airplane.

DATES: Effective January 14, 1998.

The incorporation by reference of

certain publications listed in the

regulations is approved by the Director

of the Federal Register as of January 14,

1998.

ADDRESSES: The service information

referenced in this AD may be obtained

from AI(R) American Support, Inc.,

13850 McLearen Road, Herndon,

Virginia 20171. This information may be

examined at the Federal Aviation

Administration (FAA), Transport

Airplane Directorate, Rules Docket,

1601 Lind Avenue, SW., Renton,

Washington; or at the Office of the

Federal Register, 800 North Capitol

Street, NW., suite 700, Washington, DC.

FOR FURTHER INFORMATION CONTACT:

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: A

proposal to amend part 39 of the Federal

Aviation Regulations (14 CFR part 39) to

include an airworthiness directive (AD)

that is applicable to certain British

Aerospace BAe Model ATP airplanes

and all Model HS 748 series airplanes

was published in the Federal Register

on August 20, 1997 (62 FR 44244). That

action proposed to require inspection of

the main hydraulic accumulator for

corrosion, and corrective actions, if

necessary.

Comments

Interested persons have been afforded

an opportunity to participate in the

making of this amendment. No

comments were submitted in response

to the proposal or the FAA’s

determination of the cost to the public.

Conclusion

The FAA has determined that air

safety and the public interest require the

adoption of the rule as proposed.

Cost Impact

The FAA estimates that 10 British

Aerospace BAe Model ATP airplanes of

U.S. registry will be affected by this AD,

that it will take approximately 1 work

hour per airplane to accomplish the

required actions, and that the average

labor rate is $60 per work hour. Based

on these figures, the cost impact of the

AD on U.S. operators is estimated to be

$600, or $60 per airplane.

Currently, there are no British

Aerospace Model HS 748 series

airplanes on the U.S. Register. However,

should an affected airplane be imported

and placed on the U.S. Register in the

future, it would take approximately 1

work hour per airplane to accomplish

the required actions, at an average labor

rate of $60 per work hour. Based on

these figures, the cost impact of the AD

would be $60 per airplane.

The cost impact figures discussed

above are based on assumptions that no

operator has yet accomplished any of

the requirements of this AD action, and

that no operator would accomplish

those actions in the future if this AD

were not adopted.

Regulatory Impact

The regulations adopted herein will

not have substantial direct effects 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. Therefore, in

accordance with Executive Order 12612,

it is determined that this final rule does

not have sufficient federalism

implications to warrant the preparation

of a Federalism Assessment.

For the reasons discussed above, I

certify that this action (1) is not a

‘‘significant regulatory action’’ under

Executive Order 12866; (2) is not a

‘‘significant rule’’ under DOT

Regulatory Policies and Procedures (44
65012 Federal Register / Vol. 62, No. 237 / Wednesday, December 10, 1997 / Rules and Regulations

FR 11034, February 26, 1979); and (3)

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. A final evaluation has

been prepared for this action and it is

contained in the Rules Docket. A copy

of it may be obtained from the Rules

Docket at the location provided under

the caption ADDRESSES.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation

safety, Incorporation by reference,

Safety.

Adoption of the Amendment

Accordingly, pursuant to the

authority delegated to me by the

Administrator, the Federal Aviation

Administration amends 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:

97–25–13 British Aerospace Regional

Aircraft [Formerly Jetstream Aircraft

Limited, British Aerospace (Commercial

Aircraft) Limited]: Amendment 39–

10237. Docket 97–NM–104–AD.

Applicability: BAe Model ATP airplanes

having constructor’s numbers 2002 through

2063 inclusive; and all Model HS 748 series

airplanes; 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 detect and correct corrosion of the

cylinder tube of the main hydraulic

accumulator, which could result in loss of

certain hydraulic system functions that are

essential for safe operation of the airplane,

accomplish the following:

(a) Within 30 days after the effective date

of this AD, perform an inspection of the main

hydraulic accumulator for corrosion, in

accordance with British Aerospace Service

Bulletin ATP–29–15, or HS748–29–49, both

dated February 25, 1997; as applicable. If any

discrepancy is found, prior to further flight,

accomplish the applicable corrective actions

specified in the service bulletins.

(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, FAA,

Transport Airplane Directorate. 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 §§ 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.

(d) The actions shall be done in accordance

with British Aerospace Service Bulletin

ATP–29–15, dated February 25, 1997, and

British Aerospace Service Bulletin HS748–

29–49, dated February 25, 1997. 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 AI(R)

American Support, Inc., 13850 Mclearen

Road, Herndon, Virginia 20171. Copies may

be inspected at the FAA, Transport Airplane

Directorate, 1601 Lind Avenue, SW., Renton,

Washington; or at the Office of the Federal

Register, 800 North Capitol Street, NW., suite

700, Washington, DC.

Note 3: The subject of this AD is addressed

in British airworthiness directives 004–02–

97, dated February 25, 1997, and 005–02–97,

dated February 7, 1997.

(e) This amendment becomes effective on

January 14, 1998.

Issued in Renton, Washington, on

December 2, 1997.

Darrell M. Pederson,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 97–32121 Filed 12–9–97; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 71

[Airspace Docket No. 97–AGL–40]

RIN 2120–AA66

Revision to Chicago Midway Airport

Class C Airspace Area; Illinois

AGENCY: Federal Aviation

Administration (FAA), DOT.

ACTION: Final rule.

SUMMARY: This action amends the legal

description of the Chicago Midway

Airport Class C airspace area. Currently,

the legal description uses the Runway

31L localizer course to define the

southeast boundary of Chicago

Midway’s Class C airspace outer ring

(that area between 5 and 10 nautical

miles [NM]). Since the legal description

was published, the Chicago Midway

Airport added another runway to the

outside of Runway 31L, making the old

Runway 31L the new Runway 31C. To

keep the Class C airspace area

boundaries unchanged, a correction to

the legal description must be made. This

action will make the necessary

correction by changing ‘‘Chicago

Midway 31L localizer course’’ to read

‘‘Chicago Midway 31C localizer course.’’

EFFECTIVE DATE: 0901 UTC, February 26,

1998.

FOR FURTHER INFORMATION CONTACT:

Steve Brown, Airspace and Rules

Division, ATA–400, Office of Air Traffic

Airspace Management, Federal Aviation

Administration, 800 Independence

Avenue, SW., Washington, DC 20591;

telephone: (202) 267–8783.

SUPPLEMENTARY INFORMATION:

The Rule

This action amends 14 CFR part 71 by

changing the legal description of the

Chicago Midway Airport Class C

airspace area. Currently, the legal

description uses the Runway 31L

localizer course to define the southeast

boundary of the Chicago Midway Class

C airspace outer ring (that area between

5 and 10 NM). Since the description was

published, Chicago Midway Airport

added another runway to the outside of

Runway 31L, making the old Runway

31L the new Runway 31C. To keep the

Class C airspace area boundaries

unchanged, a correction to the legal

description must be made. This action

will make the necessary correction by

changing ‘‘Chicago Midway 31L

localizer course’’ to read ‘‘Chicago

Midway 31C localizer course.’’

Since this action merely involves

changes in the legal description of the

Chicago Midway Class C airspace area

and does not involve a change in the

dimensions or operating requirements of

that airspace, notice and public

procedure under 5 U.S.C. 553(b) are

unnecessary.

The FAA has determined that this

regulation only involves an established

body of technical regulations for which

frequent and routine amendments are

necessary to keep them operationally

current.