6534 Federal Register / Vol. 65, No. 28 / Thursday, February 10, 2000 / Rules and Regulations

than 9,000 CSN on the effective date of this

AD, remove from service within 5,000 CIS

after the effective date of this AD, or prior to

accumulating to 12,500 CSN, whichever

occurs first.

(3) For fan mid shafts that have

accumulated less than 1,800 CSN on the

effective date of this AD, remove from service

prior to accumulating 6,800 CSN.

Note 3: GE CF6–80C2 SB 72–750, Revision

2, dated September 4, 1998, contains

information on reworking fan mid shafts that

results in changing the P/N. After that

rework, this AD would not apply to engines

containing the reworked fan mid shaft.

New Life Limits

(b) Except for the provisions of paragraph

(a) of this AD, no fan mid shafts, P/N

9326M74P04 or 9326M74P05, may remain in

service beyond 6,800 CSN.

Alternate Method of Compliance

(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 Manager, Engine

Certification Office (ECO). Operators shall

submit their request through an appropriate

FAA Principal Maintenance Inspector, who

may add comments and then send it to the

Manager, ECO.

Note 4: Information concerning the

existence of approved alternative methods of

compliance with this airworthiness directive,

if any, may be obtained from the ECO.

Ferry Flights

(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 aircraft to

a location where the requirements of this AD

can be accomplished.

(e) This amendment becomes effective on

April 10, 2000.

Issued in Burlington, Massachusetts, on

February 2, 2000.

David A. Downey,

Assistant Manager, Engine and Propeller

Directorate, Aircraft Certification Service.

[FR Doc. 00–2988 Filed 2–9–00; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 96–NM–226–AD; Amendment

39–11562; AD 2000–03–05]

RIN 2120–AA64

Airworthiness Directives; Boeing

Model 737–200 Series Airplanes

Modified in Accordance with

Supplemental Type Certificate (STC)

ST00969AT

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment adopts a

new airworthiness directive (AD),

applicable to certain Boeing Model 737–

200 series airplanes that requires

removal of the existing emergency floor

path lighting system and replacement

with an FAA-approved emergency floor

path lighting system. This amendment

is prompted by information indicating

that the existing emergency floor path

lighting system does not provide

adequate lighting and cueing for safe

evacuation of the airplane in the event

of an emergency. The actions specified

by this AD are intended to prevent such

inadequate lighting and cueing, which

could delay or impede the flight crew

and passengers when exiting the

airplane during an emergency.

EFFECTIVE DATE: March 16, 2000.

ADDRESSES: Information pertaining to

this amendment may be examined at the

Federal Aviation Administration (FAA),

Transport Airplane Directorate, Rules

Docket, 1601 Lind Avenue, SW.,

Renton, Washington; or at the FAA,

Small Airplane Directorate, Campus

Building, 1701 Columbia Avenue, Suite

2–160, College Park, Georgia.

FOR FURTHER INFORMATION CONTACT:

Eugene Evans, Aerospace Engineer,

ACE–116A, FAA, Small Airplane

Directorate, Atlanta Aircraft

Certification Office, One Crown Center,

1895 Phoenix Boulevard, suite 450,

Atlanta, Georgia 30349; telephone (770)

703–6081; fax (770) 703–6097.

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 Boeing

Model 737–200 series airplanes was

published in the Federal Register on

June 23, 1999 (64 FR 33443). That action

proposed to require removal of the

existing emergency floor path lighting

system and replacement with an FAAapproved emergency floor path lighting

system. That proposal was prompted by

information indicating that the existing

emergency floor path lighting system

does not provide adequate lighting and

cueing for safe evacuation of the

airplane in the event of an emergency.

The actions specified by that proposal

are intended to prevent such inadequate

lighting and cueing, which could delay

or impede the flight crew and

passengers when exiting the airplane

during an emergency.

Interested persons have been afforded

an opportunity to participate in the

making of this amendment. Due

consideration has been given to the

comments received.

One commenter concurs with the

proposed rule.

Another commenter requests that the

compliance time be extended to six

months so that it will have adequate

time to integrate the affected airplanes

into the maintenance cycle.

The FAA concurs. The FAA has

determined that such an extension of

the compliance time to within 6 months

after the effective date of the AD will

not adversely affect safety. The final

rule has been revised accordingly.

Conclusion

After careful review of the available

data, including the comments noted

above, the FAA has determined that air

safety and the public interest require the

adoption of the rule with the changes

previously described. The FAA has

determined that these changes will

neither increase the economic burden

on any operator nor increase the scope

of the AD.

Cost Impact

There are approximately 40 Boeing

Model 737–200 series airplanes of the

affected design in the worldwide fleet.

The FAA estimates that 4 airplanes of

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

that it will take approximately 12 work

hours per airplane to accomplish the

removal of the system, and that the

average labor rate is $60 per work hour.

It will take approximately 40 work

hours per airplane to accomplish the

required replacement with an FAAapproved system. Required parts for the

replacement will cost approximately

$10,000 for a new system, per airplane.

Based on these figures, the cost impact

of the AD on U.S. operators is estimated

to be $524,800, or $13,120 per airplane.

The cost impact figure discussed

above is 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 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. Therefore, it is

determined that this final rule does not

have federalism implications under

Executive Order 13132.

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

Federal Register / Vol. 65, No. 28 / Thursday, February 10, 2000 / Rules and Regulations 6535

Regulatory Policies and Procedures (44

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, 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:

2000–03–05 Boeing: Amendment 39–11562.

Docket 96–NM–226–AD.

Applicability: Model 737–200 series

airplanes equipped with SAF–T–GL0

Aerospace Limited emergency floor path

lighting systems installed in accordance with

Supplemental Type Certificate (STC)

ST00969AT, certificated in any category.

Note 1: This AD applies to each airplane

identified in the preceding applicability

provision, regardless of whether it has been

otherwise 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 inadequate lighting and cueing

of the emergency floor path lighting system,

which could delay or impede the flight crew

and passengers when exiting the airplane

during an emergency, accomplish the

following:

(a) Within 6 months after the effective date

of this AD, remove the existing

photoluminescent emergency floor path

lighting system from the airplane. Replace it

with an emergency floor path lighting system

in accordance with Supplemental Type

Certificate ST01829AT, dated February 11,

1999, or an FAA–approved emergency floor

path lighting system that is installed in

accordance with a method approved by the

Manager, Atlanta Aircraft Certification Office

(ACO), FAA, Small Airplane Directorate.

(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, Atlanta

ACO. Operators shall submit their requests

through an appropriate FAA Principal

Maintenance Inspector, who may add

comments and then send it to the Manager,

Atlanta ACO.

Note 2: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the Atlanta ACO.

(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.

(d) This amendment becomes effective on

March 16, 2000.

Issued in Renton, Washington, on February

4, 2000.

Donald L. Riggin,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 00–3131 Filed 2–9–00; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 71

[Airspace Docket No. 99–AWA–12]

RIN 2120–AA66

Revision to the Legal Description of

the Burlington International Class C

Airspace Area; VT

AGENCY: Federal Aviation

Administration (FAA), DOT.

ACTION: Final rule.

SUMMARY: This action revises the legal

description of the Burlington, VT, Class

C airspace area by changing the

operating hours to be consistent with

the current operational requirements.

Specifically, the Class C airspace area

will be designated effective during the

specific days and hours of operation of

the Burlington Tower and Approach

Control facility as established in

advance by a Notice to Airmen

(NOTAM). The effective dates and times

thereafter will be continuously

published in the Airport/Facility

Directory. This action will not change

the actual dimensions, configuration, or

operating requirements of the

Burlington Class C airspace area.

EFFECTIVE DATE: February 24, 2000.

FOR FURTHER INFORMATION CONTACT:

Terry 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:

Background

The Burlington Airport Traffic

Control Tower is reducing its hours of

operation. The Burlington Class C

airspace area remains an essential safety

measure in support of the ongoing

airport operation requirements.

On November 15, 1999, the FAA

published an NPRM (64 FR 61803) that

proposed to revise the legal description

of the Burlington, VT, Class C airspace

area by changing the operating hours to

be consistent with the current

operational requirements. Interested

parties were invited to participate in

this rulemaking proceeding by

submitting comments on the proposal to

the FAA. No comments objecting to the

proposal were received. However, one

error was found in the coordinates of

the legal description in the notice for

the Burlington International Airport,

VT. Except for the change in the

coordinates, this amendment is the

same as that proposed in the notice.

The Rule

This amendment to part 71 of The

Federal Aviation Regulations (14 CFR

part 71) revises the legal description of

the Burlington Class C airspace area

located at Burlington, VT. The legal

description will use the operating hours

for the Class C airspace area which are

consistent with the current

requirements. The Class C airspace area

is designated effective during the

specific days and hours of operation of

the Burlington facility as established in

advance by a NOTAM. This action is a

technical amendment to the legal

description and will not change the

actual dimensions, configuration, or

operating requirements of the

Burlington Class C airspace area.

The coordinates for this airspace

docket are based on North American

Datum 83. Class C airspace areas are

published in paragraph 4000 of FAA

Order 7400.9G, dated September 1,

1999, and effective September 16, 1999,

which is incorporated by reference in 14

CFR 71.1. The Class C airspace area

listed in this document will be

published subsequently in the Order.