65036 Federal Register / Vol. 60, No. 242 / Monday, December 18, 1995 / Proposed Rules

proposed AD, that it would take zero

additional work hours per engine to

accomplish the proposed actions, and

that the average labor rate is $60 per

work hour. Required parts would cost

approximately $7,667 per engine, based

on the estimated current part cost,

prorated downward by a factor equal to

the quotient of the difference between

the original cyclic life limit (9000

cycles) and the revised cyclic life limit

(6000 cycles) divided by the original

cyclic life limit. Based on these figures,

the total cost impact of the proposed AD

on U.S. operators is estimated to be

$1,150,000.

The regulations proposed herein

would 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

proposal would not have sufficient

federalism implications to warrant the

preparation of a Federalism Assessment.

For the reasons discussed above, I

certify that this proposed regulation (1)

is not a ‘‘significant regulatory action’’

under Executive Order 12866; (2) is not

a ‘‘significant rule’’ under the DOT

Regulatory Policies and Procedures (44

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

promulgated, 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 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), 40101, 40113,

44701.

§ 39.13 [Amended]

2. Section 39.13 is amended by

adding the following new airworthiness

directive:

General Electric Company: Docket No. 95–

ANE–41.

Applicability: General Electric Company

(GE) Models CF34–1A, –3A, and –3A2

turbofan engines, with high pressure

compressor (HPC) stage 1 rotor disks, part

number 6040T79G01, installed. These

engines are installed on but not limited to

Canadair Limited Model CL–600–2A12 and

CL–600–2B16 aircraft.

Note: 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

use the authority provided in paragraph (b)

to request approval from the Federal Aviation

Administration (FAA). This approval may

address either no action, if the current

configuration eliminates the unsafe

condition, or different actions necessary to

address the unsafe condition described in

this AD. Such a request should include an

assessment of the effect of the changed

configuration on the unsafe condition

addressed by this AD. In no case does the

presence of any modification, alteration, or

repair remove any engine from the

applicability of this AD.

Compliance: Required as indicated, unless

accomplished previously.

To prevent HPC stage 1 rotor disk rupture,

engine failure, and damage to the aircraft,

accomplish the following:

(a) Remove from service HPC stage 1 rotor

disks prior to accumulating 6,000 cycles in

service since new, and replace with a

serviceable part.

(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, Engine

Certification Office. The request should be

forwarded through an appropriate FAA

Principal Maintenance Inspector, who may

add comments and then send it to the

Manager, Engine Certification Office.

Note: Information concerning the existence

of approved alternative methods of

compliance with this airworthiness directive,

if any, may be obtained from the Engine

Certification Office.

Issued in Burlington, Massachusetts, on

December 8, 1995.

Jay J. Pardee,

Manager, Engine and Propeller Directorate,

Aircraft Certification Service.

[FR Doc. 95–30645 Filed 12–15–95; 8:45 am]

BILLING CODE 4910–13–U

14 CFR Part 39

[Docket No. 95–NM–128–AD]

Airworthiness Directives; Jetstream

Model 4101 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 Jetstream Model 4101 airplanes.

This proposal would require an

inspection to verify the proper position

of ‘‘door open’’ placards on the inside

of the main entrance door, and

replacement with new placards

appropriately positioned, if necessary.

This proposal is prompted by a report

that the ‘‘door open’’ placards on the

inside of the main entrance door, as

currently installed, may not be visible to

passengers or flightcrew when the door

handle is in the open position. The

actions specified by the proposed AD

are intended to ensure that certain

placards on the inside of the main

entrance door are clearly visible and

perform their intended function in the

event of an emergency evacuation.

DATES: Comments must be received by

January 23, 1996.

ADDRESSES: Submit comments in

triplicate to the Federal Aviation

Administration (FAA), Transport

Airplane Directorate, ANM–103,

Attention: Rules Docket No. 95–NM–

128–AD, 1601 Lind Avenue, SW.,

Renton, Washington 98055–4056.

Comments may be inspected at this

location between 9 a.m. and 3 p.m.,

Monday through Friday, except Federal

holidays.

The service information referenced in

the proposed rule may be obtained from

Jetstream Aircraft, Inc., P.O. Box 16029,

Dulles International Airport,

Washington, DC 20041–6029. This

information may be examined at the

FAA, Transport Airplane Directorate,

1601 Lind Avenue, SW., Renton,

Washington.

FOR FURTHER INFORMATION CONTACT:

William Schroeder, Aerospace Engineer,

Standardization Branch, ANM–113,

FAA, Transport Airplane Directorate,

1601 Lind Avenue, SW., Renton,

Washington 98055–4056; telephone

(206) 227–2148; fax (206) 227–1149.

SUPPLEMENTARY INFORMATION:

Comments Invited

Interested persons are invited to

participate in the making of the

proposed rule by submitting such
Federal Register / Vol. 60, No. 242 / Monday, December 18, 1995 / Proposed Rules 65037

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 95–NM–128–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–103, Attention: Rules Docket No.

95–NM–128–AD, 1601 Lind Avenue,

SW., Renton, Washington 98055–4056.

Discussion

The Civil Aviation Authority (CAA),

which is the airworthiness authority for

the United Kingdom, recently notified

the FAA that an unsafe condition may

exist on certain Jetstream Model 4101

airplanes. The CAA advises that the

‘‘door open’’ placards on the inside of

the main entrance door may not be

properly installed (that is, aligned with

the door handle when it is in the

‘‘open’’ position), as required by section

25.811 (e) of the Federal Aviation

Regulations (14 CFR 25.811),

‘‘Emergency exit marking.’’ The

placards are currently installed at

imprecise locations, since the type

design data was not explicit in defining

the installation locations. Therefore,

these placards may not be visible to the

passengers or flightcrew during an

emergency evacuation, and

consequently, do not fulfill the intent of

the regulations, which is to ensure that

these placards are visible and properly

aligned with the door handle when it is

in the ‘‘open’’ position. This condition,

if not corrected, could delay or impede

the evacuation of passengers during an

emergency.

Jetstream has issued Service Bulletin

J41–11–007, dated May 10, 1995, which

describes procedures for a one-time

visual inspection to verify the proper

position of certain placards on the

inside of the main entrance door, and

removal of the placard and installation

of a new placard, if necessary. The CAA

classified this service bulletin as

mandatory in order to assure the

continued airworthiness of these

airplanes in the United Kingdom.

This airplane model is manufactured

in the United Kingdom and is type

certificated for operation in the United

States under the provisions of section

21.29 of the Federal Aviation

Regulations (14 CFR 21.29) and the

applicable bilateral airworthiness

agreement. Pursuant to this bilateral

airworthiness agreement, the CAA has

kept the FAA informed of the situation

described above. The FAA has

examined the findings of the CAA,

reviewed all available information, and

determined that AD action is necessary

for products of this type design that are

certificated for operation in the United

States.

Since an unsafe condition has been

identified that is likely to exist on other

airplanes of the same type design, the

proposed AD would require a one-time

visual inspection to verify the proper

position of certain placards on the

inside of the main entrance door, and

removal of the placard and installation

of a new placard, if necessary. The

actions would be required to be

accomplished in accordance with the

service bulletin described previously.

The FAA estimates that 25 airplanes

of U.S. registry would be affected by this

proposed AD, that it would take

approximately 1 work hour per airplane

to accomplish the proposed actions, and

that the average labor rate is $60 per

work hour. Required parts would be

supplied by the manufacturer at no cost

to the operators. Based on these figures,

the cost impact of the proposed AD on

U.S. operators is estimated to be $1,500,

or $60 per airplane.

The cost impact figure discussed

above is based on assumptions that no

operator has yet accomplished any of

the proposed requirements of this AD

action, and that no operator would

accomplish those actions in the future if

this AD were not adopted.

The regulations proposed herein

would 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

proposal would not have sufficient

federalism implications to warrant the

preparation of a Federalism Assessment.

For the reasons discussed above, I

certify that this proposed regulation (1)

is not a ‘‘significant regulatory action’’

under Executive Order 12866; (2) is not

a ‘‘significant rule’’ under the DOT

Regulatory Policies and Procedures (44

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

promulgated, 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 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), 40101, 40113,

44701.

39.13 [Amended]

2. Section 39.13 is amended by

adding the following new airworthiness

directive:

Jetstream Aircraft Limited: Docket 95–NM–

128–AD.

Applicability: Model 4101 airplanes,

constructors numbers 41004 through 41046

inclusive; 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 use the authority

provided in paragraph (b) of this AD to

request approval from the FAA. This

approval may address either no action, if the

current configuration eliminates the unsafe

condition; or different actions necessary to

address the unsafe condition described in

this AD. Such a request should include an

assessment of the effect of the changed

configuration on the unsafe condition
65038 Federal Register / Vol. 60, No. 242 / Monday, December 18, 1995 / Proposed Rules

addressed by this AD. In no case does the

presence of any modification, alteration, or

repair remove any airplane from the

applicability of this AD.

Compliance: Required as indicated, unless

accomplished previously.

To ensure that certain placards on the

inside of the main entrance door are clearly

visible and properly aligned, accomplish the

following:

(a) Within 4 months after the effective date

of this AD, perform a one-time visual

inspection to verify the proper position of the

door open placards on the inside of the main

entrance door, in accordance with Jetstream

Service Bulletin J41–11–007, dated May 10,

1995. If any placard is found to be

improperly positioned, prior to further flight,

remove the placard and install a new placard

in the specified position, 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,

Standardization Branch, ANM–113, 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, Standardization

Branch, ANM–113.

Note 2: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the Standardization Branch,

ANM–113.

(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.

Issued in Renton, Washington, on

December 11, 1995.

Darrell M. Pederson,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 95–30644 Filed 12–15–95; 8:45 am]

BILLING CODE 4910–13–U

14 CFR Part 39

[Docket No. 95–CE–61–AD]

Airworthiness Directives; Brackett

Aircraft Company, Inc. Air Filter

Assemblies Installed on Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Notice of proposed rulemaking

(NPRM).

SUMMARY: This document proposes to

supersede AD 95–03–02, which

currently requires repetitively

inspecting (visually) the air filter frame

for a loose or deteriorating gasket on

airplanes incorporating certain Brackett

air filter assemblies. The proposed

action retains the repetitive inspection

and possible replacement requirements

as contained in AD 95–03–02, and

would incorporate additional Brackett

air filter assemblies to the applicability

of that AD. Additionally, it would

provide a terminating action for the

repetitive inspection. The Federal

Aviation Administration’s

determination that these additional

Brackett air filter assemblies should be

inspected and replaced prompted this

AD action. The actions specified by the

proposed AD are intended to prevent

gasket particles from entering the

carburetor because of air filter gasket

failure, which, if not detected and

corrected, could result in partial or

complete loss of engine power and loss

of control of the airplane.

DATES: Comments must be received on

or before February 20, 1996.

ADDRESSES: Submit comments in

triplicate to the Federal Aviation

Administration (FAA), Central Region,

Office of the Assistant Chief Counsel,

Attention: Rules Docket No. 95–CE–61–

AD, Room 1558, 601 E. 12th Street,

Kansas City, Missouri 64106. Comments

may be inspected at this location

between 8 a.m. and 4 p.m., Monday

through Friday, holidays excepted.

Service information that applies to the

proposed AD may be obtained from

Brackett Aircraft Company, Inc., 7045

Flightline Drive, Kingman, Arizona

86401. This information also may be

examined at the Rules Docket at the

address above.

FOR FURTHER INFORMATION CONTACT:

Elizabeth Bumann, Aerospace Engineer,

Los Angeles Aircraft Certification

Office, FAA, 3960 Paramount

Boulevard, Lakewood, California 90712;

telephone (310) 627–5265; facsimile

(310) 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

should 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 that

summarizes 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 No. 95–CE–61–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, Central Region, Office of the

Assistant Chief Counsel, Attention:

Rules Docket No. 95–CE–61–AD, Room

1558, 601 E. 12th Street, Kansas City,

Missouri 64106.

Discussion

AD 95–03–02 was published in the

Federal Register on August 25, 1994 (59

FR 43784) and applies to airplanes that

have a certain Brackett air filter

neoprene gasket installed in accordance

with Supplemental Type Certificate

(STC) SA71GL. The action requires

repetitively inspecting (visually) the air

filter frame for a loose or deteriorated

gasket, and replacing any gasket found

loose or deteriorated.

The FAA’s continuing investigation of

these Brackett neoprene gasket air

filter’s failure and the continuing unsafe

condition described in AD 95–03–02

suggests that a superseding action be

proposed. The FAA has discovered that

additional Brackett air filters with the

same neoprene gasket design are

installed as original equipment and in

accordance with STC SA693CE on

certain additional airplanes. These

airplanes would also be subject to air

filter assembly failure.

After examining the circumstances

and reviewing all available information

related to the information described

above, the FAA has determined that AD

action should be taken to prevent gasket

particles from entering the carburetor

because of air filter gasket failure, which

could result in partial or complete loss

of engine power.

Since an unsafe condition has been

identified that is likely to exist or

develop in other Brackett air filter frame

assemblies of the same type design, the

proposed AD would supersede AD 95–

03–02 with a new AD that would

require incorporating additional

Brackett air filter assemblies to the

applicability paragraph of AD 95–03–02,