64780 Federal Register / Vol. 62, No. 236 / Tuesday, December 9, 1997 / Proposed Rules

actions, and that the average labor rate

is $60 per work hour. Based on these

figures, the cost impact of the proposed

AD on U.S. operators is estimated to be

$4,320, or $120 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.

Regulatory Impact

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), 40113, 44701.

§ 39.13 [Amended]

2. Section 39.13 is amended by

adding the following new airworthiness

directive:

Boeing: Docket 97–NM–65–AD.

Applicability: Model 747–400 series

airplanes; as listed in Boeing Alert Service

Bulletin 747–25A3137, dated March 13,

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

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 chafing of the galley power

feeder and static ground wiring on passenger

oxygen system tubing in the forward ceiling

area above the Door 4 galley, which could

result in a fire, accomplish the following:

(a) Within 18 months after the effective

date of this AD: Perform a one-time

inspection of the separation between the

galley power feeder and static ground wiring,

and the adjacent passenger oxygen system

tubing in the forward ceiling area above the

door 4 galley, in accordance with Boeing

Alert Service Bulletin 747–25A3137, dated

March 13, 1997. If the separation is outside

the limits specified in the alert service

bulletin, prior to further flight, reroute the

wiring, and install clamps and sleeves in

accordance with the alert 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, Seattle

Aircraft Certification Office (ACO), 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, Seattle ACO.

Note 2: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the Seattle 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.

Issued in Renton, Washington, on

December 2, 1997.

Darrell M. Pederson,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 97–32110 Filed 12–8–97; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 97–NM–75–AD]

RIN 2120–AA64

Airworthiness Directives; Grumman

Model TS–2A 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 all

Grumman Model TS–2A series

airplanes. This proposal would require

revising the Airplane Flight Manual

(AFM) to modify the limitation that

prohibits positioning the power levers

below the flight idle stop during flight,

and to provide a statement of the

consequences of positioning the power

levers below the flight idle stop during

flight. This proposal is prompted by

incidents and accidents involving

airplanes equipped with turboprop

engines in which the ground propeller

beta range was used improperly during

flight. The actions specified by the

proposed AD are intended to prevent

loss of airplane controllability, or engine

overspeed and consequent loss of

engine power, caused by the power

levers being positioned below the flight

idle stop while the airplane is in flight.

DATES: Comments must be received by

January 8, 1998.

ADDRESSES: Submit comments in

triplicate to the Federal Aviation

Administration (FAA), Transport

Airplane Directorate, ANM–103,

Attention: Rules Docket No. 97–NM–

75–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.

This information may be examined at

the FAA, Transport Airplane

Directorate, 601 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:

Frank Hoerman, Aerospace Engineer,

Flight Test Branch, ANM–160L, FAA,

Transport Airplane Directorate, Los

Angeles Aircraft Certification Office,

3960 Paramount Boulevard, Lakewood,
Federal Register / Vol. 62, No. 236 / Tuesday, December 9, 1997 / Proposed Rules 64781

California 90712; telephone (562) 527–

5371; fax (562) 625–5210.

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 97–NM–75–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.

97–NM–75–AD, 1601 Lind Avenue,

SW., Renton, Washington 98055–4056.

Discussion

In recent years, the FAA has received

reports of 14 incidents and/or accidents

involving intentional or inadvertent

operation of the propellers in the

ground beta range during flight on

airplanes equipped with turboprop

engines. (For the purposes of this

proposal, beta is defined as the range of

propeller operation intended for use

during taxi, ground idle, or reverse

operations as controlled by the power

lever settings aft of the flight idle stop.)

Five of the fourteen in-flight beta

occurrences were classified as

accidents. In each of these five cases,

operation of the propellers in the beta

range occurred during flight. Operation

of the propellers in the beta range

during flight, if not prevented, could

result in loss of airplane controllability,

or engine overspeed with consequent

loss of engine power.

Communication between the FAA and

the public during a meeting held on

June 11–12, 1996, in Seattle,

Washington, revealed a lack of

consistency of the information on inflight beta operation contained in the

FAA-approved Airplane Flight Manual

(AFM) for airplanes that are not

certificated for in-flight operation with

the power levers below the flight idle

stop. (Airplanes that are certificated for

this type of operation are not affected by

the above-referenced conditions.)

FAA’s Determinations

The FAA has examined the

circumstances and reviewed all

available information related to the

incidents and accidents described

previously. The FAA finds that the

Limitations Section of the AFM’s for

certain airplanes must be revised to

prohibit positioning the power levers

below the flight idle stop while the

airplane is in flight, and to provide a

statement of the consequences of

positioning the power levers below the

flight idle stop. The FAA has

determined that the affected airplanes

include those that are equipped with

turboprop engines and that are not

certificated for in-flight operation with

the power levers below the flight idle

stop. Since turbo-propeller powered

Grumman Model TS–2A series airplanes

meet these criteria, the FAA finds that

the AFM for these airplanes must be

revised to include the limitation and

statement of consequences described

previously.

Explanation of the Requirements of the

Proposed AD

Since an unsafe condition has been

identified that is likely to exist or

develop in other turbo-propeller

powered Grumman Model TS–2A series

airplanes of the same type design, the

proposed AD would require revising the

Limitations Section of the AFM to

modify the limitation that prohibits the

positioning of the power levers below

the flight idle stop while the airplane is

in flight, and to add a statement of the

consequences of positioning the power

levers below the flight idle stop while

the airplane is in flight.

Interim Action

This is considered interim action

until final action is identified, at which

time the FAA may consider further

rulemaking.

Cost Impact

The FAA estimates that 1 airplane 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. Based on these figures, the

cost impact of the proposed AD on the

single U.S. operator is estimated to be

$60.

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.

Regulatory Impact

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), 40113, 44701.
64782 Federal Register / Vol. 62, No. 236 / Tuesday, December 9, 1997 / Proposed Rules

§ 39.13 [Amended]

2. Section 39.13 is amended by

adding the following new airworthiness

directive:

Grumman: Docket 97–NM–75–AD.

Applicability: All Model TS–2A 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 prevent loss of airplane controllability,

or engine overspeed and consequent loss of

engine power, caused by the power levers

being positioned below the flight idle stop

while the airplane is in flight, accomplish the

following:

(a) Within 30 days after the effective date

of this AD, revise the Limitations Section of

the FAA-approved Airplane Flight Manual

(AFM) to include the following statements.

This action may be accomplished by

inserting a copy of this AD into the AFM.

‘‘Positioning of power levers below the

flight idle stop while the airplane is in flight

is prohibited. Such positioning may lead to

loss of airplane control or may result in an

overspeed condition and consequent loss of

engine power.’’

(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, Los

Angeles Aircraft Certification Office (ACO),

FAA, Transport Airplane Directorate.

Operators shall submit their requests through

an appropriate FAA Principal Operations

Inspector, who may add comments and then

send it to the Manager, Los Angeles ACO.

Note 2: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the Los Angeles 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.

Issued in Renton, Washington, on

December 2, 1997.

Darrell M. Pederson,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 97–32109 Filed 12–8–97; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 97–NM–97–AD]

RIN 2120–AA64

Airworthiness Directives; SAAB Model

Saab 2000 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 all

SAAB Model Saab 2000 series airplanes.

This proposal would require revising

the Airplane Flight Manual (AFM) to

modify the limitation that prohibits

positioning the power levers below the

flight idle stop during flight, and to

provide a statement of the consequences

of positioning the power levers below

the flight idle stop during flight. This

proposal is prompted by incidents and

accidents involving airplanes equipped

with turboprop engines in which the

ground propeller beta range was used

improperly during flight. The actions

specified by the proposed AD are

intended to prevent loss of airplane

controllability, or engine overspeed and

consequent loss of engine power caused

by the power levers being positioned

below the flight idle stop while the

airplane is in flight.

DATES: Comments must be received by

January 8, 1998.

ADDRESSES: Submit comments in

triplicate to the Federal Aviation

Administration (FAA), Transport

Airplane Directorate, ANM–103,

Attention: Rules Docket No. 97–NM–

97–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.

This information may be examined at

the FAA, Transport Airplane

Directorate, 1601 Lind Avenue, SW.,

Renton, Washington.

FOR FURTHER INFORMATION CONTACT:

Mark Quam, Aerospace Engineer,

Standardization Branch, ANM–113,

FAA, Transport Airplane Directorate,

1601 Lind Avenue, SW., Renton,

Washington 98055–4056; telephone

(425) 227–2145; fax (425) 227–1149.

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 97–NM–97–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.

97–NM–97–AD, 1601 Lind Avenue,

SW., Renton, Washington 98055–4056.

Discussion

In recent years, the FAA has received

reports of 14 incidents and/or accidents

involving intentional or inadvertent

operation of the propellers in the

ground beta range during flight on

airplanes equipped with turboprop

engines. (For the purposes of this

proposal, beta is defined as the range of

propeller operation intended for use

during taxi, ground idle, or reverse

operations as controlled by the power

lever settings aft of the flight idle stop.)

Five of the fourteen in-flight beta

occurrences were classified as

accidents. In each of these five cases,

operation of the propellers in the beta

range occurred during flight. Operation

of the propellers in the beta range

during flight, if not prevented, could

result in loss of airplane controllability,