58894 Federal Register / Vol. 62, No. 211 / Friday, October 31, 1997 / Rules and Regulations

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

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 failure of the high pressure

compressor rotor (HPCR) 3–9 spool, which

can result in an uncontained engine failure

and damage to the aircraft, accomplish the

following:

(a) Within 30 days after the effective date

of this AD, remove from service HPCR 3–9

spools identified by serial number in the

applicable service bulletin (SB), and replace

with serviceable parts, as follows:

(1) For GE CF6–50 series turbofan engines,

remove and replace in accordance with GE

CF6–50 SB 72–A1139, dated October 17,

1997.

(2) For GE CF6–80C series turbofan

engines, remove and replace in accordance

with GE CF6–80C2 SB 72–A906, dated

October 17, 1997.

(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. Operators shall submit

their requests through an appropriate FAA

Principal Maintenance Inspector, who may

add comments and then send it to the

Manager, Engine Certification Office.

Note 2: Information concerning the

existence of approved alternative methods of

compliance with this airworthiness directive,

if any, may be obtained from the Engine

Certification Office.

(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 aircraft to

a location where the requirements of this AD

can be accomplished.

(d) The actions required by this AD shall

be done in accordance with the following GE

SBs:

Document No. Pages Date

CF6–50 SB 72–

A1139.

1–7 Oct. 17, 1997.

Total pages: 7.

CF6–80C2 SB

72–A906.

1–7 Oct. 17, 1997.

Total pages: 7.

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 General Electric Company Technical

Services, Attention: Leader for distribution/

microfilm, 10525 Chester Road, Cincinnati,

OH 45215; telephone (513) 672–8400 Ext.

114, fax (513) 672–8422. Copies may be

inspected at the FAA, New England Region,

Office of the Assistant Chief Counsel, 12 New

England Executive Park, Burlington, MA; or

at the Office of the Federal Register, 800

North Capitol Street, NW., suite 700,

Washington, DC.

(e) This amendment becomes effective on

November 17, 1997.

Issued in Burlington, Massachusetts, on

October 22, 1997.

James C. Jones,

Assistant Manager, Engine and Propeller

Directorate, Aircraft Certification Service.

[FR Doc. 97–28742 Filed 10–30–97; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 97–CE–11–AD; Amendment 39–

10187; AD 97–22–16]

RIN 2120–AA64

Airworthiness Directives; Raytheon

Aircraft Company Models 1900, 1900C,

and 1900D Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment adopts a

new airworthiness directive (AD) that

applies to certain Raytheon Aircraft

Company (Raytheon) Models 1900,

1900C, and 1900D airplanes (formerly

referred to as Beech Models 1900,

1900C, and 1900D airplanes). This AD

requires fabricating and installing a

placard that restricts the use of the

forward and aft vent blower assemblies

to only the ‘‘OFF’’ or ‘‘HIGH’’ position.

This AD also requires incorporating a

modification that would replace the

bearings on the vent blower assemblies

with improved design bearings, and

provide thermal protection for the vent

blowers, as applicable. Incorporating the

modification will eliminate the need for

the placard. The AD results from reports

of vent blower assembly bearings

seizing and locking the blower motor on

several of the affected airplanes. The

actions specified by this AD are

intended to prevent the vent blower

assembly bearings from seizing, which

could result in smoke emanating from

the insulating material covering the

electrical wiring and entering the

airplane cabin.

DATES: Effective December 5, 1997.

The incorporation by reference of

certain publications listed in the

regulations is approved by the Director

of the Federal Register as of December

5, 1997.

ADDRESSES: Service information that

applies to this AD may be obtained from

the Raytheon Aircraft Company, P.O.

Box 85, Wichita, Kansas 67201–0085.

This information may also be examined

at the Federal Aviation Administration

(FAA), Central Region, Office of the

Regional Counsel, Attention: Rules

Docket No. 97–CE–11–AD, Room 1558,

601 E. 12th Street, Kansas City, Missouri

64106; or at the Office of the Federal

Register, 800 North Capitol Street, NW.,

suite 700, Washington, DC.

FOR FURTHER INFORMATION CONTACT: Mr.

Harvey Nero, Aerospace Engineer,

Wichita Aircraft Certification Office,

FAA, 1801 Airport Road, Mid-Continent

Airport, Wichita, Kansas 67209;

telephone (316) 946–4137; facsimile

(316) 946–4407.

SUPPLEMENTARY INFORMATION:

Events Leading to the Issuance of This

AD

A proposal to amend part 39 of the

Federal Aviation Regulations (14 CFR

part 39) to include an AD that would

apply to certain Raytheon Models 1900,

1900C, and 1900D airplanes was

published in the Federal Register as a

notice of proposed rulemaking (NPRM)

on May 29, 1997 (62 FR 29086). The

NPRM proposed to require (1)

fabricating and installing a placard that

restricts the use of the vent blower

assemblies; and (2) incorporating a

modification that would replace the

bearings in the vent blower assemblies

with improved design bearings, and

provide thermal protection for the vent

blowers, as applicable. Incorporating the

modification would eliminate the need

for the placard. Accomplishment of the

proposed modification as specified in

the NPRM would be in accordance with

the Update Procedures for the

Electromech Technologies EM630

Blower (Raytheon P/N 114–380028–1

for Installation of Kit P/N’s 630–201–1

and 630–201–2), dated December 9,

1996; and Advanced Industries, Inc.

Installation Procedure for the Resistor

Wiring Harness Kit on the BC80A–1

Blower, dated October 9, 1996. Both of

these documents are referenced in

Raytheon Service Bulletin No. 2721,

Issued: January 1997.

The NPRM resulted from vent blower

assembly bearings seizing and locking

the blower motor on several of the

affected airplanes.

Interested persons have been afforded

an opportunity to participate in the

making of this amendment. No

comments were received on the
Federal Register / Vol. 62, No. 211 / Friday, October 31, 1997 / Rules and Regulations 58895

proposed AD or on the FAA’s

determination of the cost to the public.

The FAA’s Determination

After careful review of all available

information related to the subject

presented above, the FAA has

determined that air safety and the

public interest require the adoption of

the rule as proposed except for minor

editorial corrections. The FAA has

determined that these minor corrections

will not change the meaning of the AD

and will not add any additional burden

upon the public than was already

proposed.

Cost Impact

The FAA estimates that 500 airplanes

in the U.S. registry will be affected by

this AD, that it will take approximately

7 workhours per airplane to accomplish

the required modification, and that the

average labor rate is approximately $60

an hour. Parts cost approximately $500

per airplane. Based on these figures, the

total cost impact of the AD on U.S.

operators is estimated to be $460,000.

These figures are based on the

presumption that no owner/operator of

the affected airplanes has incorporated

the modification.

Raytheon has informed the FAA that

approximately 700 kits have been

shipped from the Raytheon Aircraft

Authorized Service Center. This is

enough to equip 350 of the affected

airplanes (two vent blower assemblies

per airplane). Presuming that each of the

350 sets of kits is incorporated on an

affected airplane, the cost impact of this

AD is reduced by $322,000 from

$460,000 to $138,000.

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

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 copy of the final

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, 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 a new airworthiness directive

(AD) to read as follows:

97–22–16 Raytheon Aircraft Company:

Amendment 39-10187; Docket No. 97-

CE–11-AD.

Applicability: The following model and

serial number airplanes, certificated in any

category, that are equipped with either part

number (P/N) 114–380028–1 vent blower

assemblies or P/N 114–380028–3 vent blower

assemblies:

Model Serial numbers

1900 ................. UA–2 and UA–3.

1900C ............... UB–1 through UB–74, and

UC–1 through UC–174.

1900C (C–12J) UD–1 through UD–6.

1900D ............... UE–1 through UE–244.

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 (f) 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 in the

body of this AD, unless already

accomplished.

To prevent the vent blower assembly

bearings from seizing, which could result in

smoke emanating from the insulating

material covering the electrical wiring and

entering the airplane cabin, accomplish the

following:

(a) Within the next 100 hours time-inservice (TIS) after the effective date of this

AD, accomplish the following:

(1) Fabricate a placard, using letters at least

1/8-inch in height, with the words: ‘‘Operate

vent blowers in HIGH or OFF position only’’.

(2) Install this placard near the vent blower

control switch within the pilot’s clear view.

(3) This placard requirement may be

terminated when the modifications required

by paragraph (b) of this AD are incorporated.

(b) Upon accumulating 2,000 total hours

TIS or within the next 1,000 hours TIS after

the effective date of this AD, whichever

occurs later, incorporate one of the following

kits, as applicable, in accordance with the

referenced kit instructions, as specified in

Raytheon Service Bulletin No. 2721, Issued:

January, 1997:

(1) For P/N 114–380028–1 vent blower

assemblies: Electromech Technologies Kit

No. EM630–201–1 or EM630-201–2 (as

appropriate for the blower serial number), in

accordance with the Update Procedures for

the Electromech Technologies EM630 Blower

(Raytheon P/N 114–380028–1 for Installation

of Kit P/N’s 630–201–1 and 630–201–2),

dated December 9, 1996. These kits, when

incorporated, replace the bearings on the

vent blower assemblies with improved

design bearings, and provide thermal

protection for the vent blowers; or

(2) For P/N 114–380028–3: Advanced

Industries Kit No. BC80A905 in accordance

with Advanced Industries, Inc. Installation

Procedure for the Resistor Wiring Harness Kit

on the BC80A–1 Blower, dated October 9,

1996. This kit, when incorporated, provides

thermal protection for the vent blowers.

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

person may install P/N 114–380028–1 or

P/N 114–380028–3 vent blower assemblies

without first incorporating the appropriate

kit(s), as referenced in paragraphs (b)(1) and

(b)(2) of this AD.

(d) Fabricating and installing the placard as

required by paragraphs (a)(1) and (a)(2) of

this AD may be performed by the owner/

operator holding at least a private pilot

certificate as authorized by section 43.7 of

the Federal Aviation Regulations (14 CFR

43.7), and must be entered into the aircraft

records showing compliance with this AD in

accordance with section 43.11 of the Federal

Aviation Regulations (14 CFR 43.11).

(e) 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.

(f) An alternative method of compliance or

adjustment of the compliance time that

provides an equivalent level of safety may be

approved by the Manager, Wichita Aircraft

Certification Office (ACO), 1801 Airport

Road, Room 100, Mid-Continent Airport,

Wichita, Kansas 67209. The request shall be

forwarded through an appropriate FAA

Maintenance Inspector, who may add

comments and then send it to the Manager,

Wichita ACO.

Note 2: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the Wichita ACO.
58896 Federal Register / Vol. 62, No. 211 / Friday, October 31, 1997 / Rules and Regulations

(g) The modification required by this AD

shall be done in accordance with the Update

Procedures for the Electromech Technologies

EM630 Blower (Raytheon P/N 114–380028–

1 for Installation of Kit P/N’s 630–201–1 and

630–201–2), dated December 9, 1996; and

Advanced Industries, Inc. Installation

Procedure for the Resistor Wiring Harness Kit

on the BC80A–1 Blower, dated October 9,

1996. Both of these documents are referenced

in Raytheon Service Bulletin No. 2721,

Issued: January, 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 the Raytheon Aircraft

Company, P.O. Box 85, Wichita, Kansas

67201–0085. Copies may be inspected at the

FAA, Central Region, Office of the Regional

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

Kansas City, Missouri, or at the Office of the

Federal Register, 800 North Capitol Street,

NW., suite 700, Washington, DC.

(h) This amendment (39–10187) becomes

effective on December 5, 1997.

Issued in Kansas City, Missouri, on

October 23, 1997.

Mary Ellen A. Schutt,

Acting Manager, Small Airplane Directorate,

Aircraft Certification Service.

[FR Doc. 97–28872 Filed 10–30–97; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 71

[Airspace Docket No. 97–ANM–08]

Establishment of Class E Airspace;

Twin Falls, ID

AGENCY: Federal Aviation

Administration (FAA), DOT.

ACTION: Final rule.

SUMMARY: This action establishes the

Twin Falls, ID, Class E airspace. The

recent commissioning of the Twin Falls

Automated Surface Observation System

(ASOS) qualifies the Joslin Field-Magic

Valley Regional Airport for a Class E

surface area. The intended effect of this

action is to provide the controlled

airspace necessary, when the control

tower is closed and Class D airspace is

not active, to enable the FAA to provide

Instrument Flight Rules (IFR) air traffic

control services and separation to IFR

aircraft.

EFFECTIVE DATE: 0901 UTC, January 1,

1998.

FOR FURTHER INFORMATION CONTACT:

Dennis Ripley, ANM–520.6, Federal

Aviation Administration, Docket No.

97–ANM–08, 1601 Lind Avenue S.W.,

Renton, Washington, 98055–4056;

telephone number: (425) 227–2527.

SUPPLEMENTARY INFORMATION:

History

On June 17, 1997, the FAA proposed

to amend Title 14, Code of Federal

Regulations part 71 (14 CFR part 71) by

establishing the Class E airspace area at

Twin Falls, ID, (62 FR 32704). The

recent commissioning of the Twin Falls

ASOS qualifies the Joslin Field-Magic

Valley Regional Airport for a Class E

surface area. In the notice of proposed

rulemaking action, the airport name was

inadvertently listed as Twin Falls-Sun

Valley Regional, Joslin Field. The

correct name is Joslin Field-Magic

Valley Regional Airport. Additionally,

an error was discovered in the airport

coordinates. These errors are corrected

herein.

Interested parties were invited to

participate in the rulemaking

proceeding by submitting written

comments on the proposal. No

comments were received. The

coordinates for this airspace docket are

based on North American Datum 83.

Class E airspace areas designated as a

surface area for an airport are published

in Paragraph 6002 of FAA Order

7400.9E, dated September 10, 1997, and

effective September 16, 1997, which is

incorporated by reference in 14 CFR

71.1. The Class E airspace designation

listed in this document will be

published subsequently in the Order.

The Rule

This amendment to 14 CFR part 71

establishes Class E airspace within a 4.3

nautical mile radius of the Joslin FieldMagic Valley Regional Airport, Twin

Falls, ID. Where communications and

weather reporting criteria are met, the

FAA establishes Class E airspace

extending upward from the surface to

the base of the overlying controlled

airspace to contain terminal instrument

operations if such action is justified

and/or in the public interest. The recent

installation and commissioning of the

Twin Falls ASOS qualifies the Joslin

Field-Magic Valley Regional Airport for

a Class E surface area. The intended

effect of this action is to provide the

controlled airspace necessary, when the

control tower is closed and Class D

airspace is not active, to enable the FAA

to provide IFR air traffic control services

and separation to IFR aircraft at the

Joslin Field-Magic Valley Regional

Airport. The area would be depicted on

aeronautical charts for pilot reference.

The FAA has determined that this

proposed regulation only involves an

established body of technical

regulations for which frequent and

routine amendments are necessary to

keep them operationally current. It,

therefore, (1) is not a ‘‘significant

regulatory action’’ under Executive

Order 12866; (2) is not a ‘‘significant

rule’’ under DOT Regulatory Policies

and Procedures (44 FR 11034; February

26, 1979); and (3) does not warrant

preparation of a Regulatory Evaluation

as the anticipated impact is so minimal.

Since this is a routine matter that will

only affect air traffic procedures and air

navigation, it is certified that this rule

will not have a significant economic

impact on a substantial number of small

entities under the criteria of the

Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 71

Airspace, Incorporation by reference,

Navigation (air).

Adoption of the Amendment

In consideration of the foregoing, the

Federal Aviation Administration

amends 14 CFR part 71 as follows:

PART 71—DESIGNATION OF CLASS A,

CLASS B, CLASS C, CLASS D, AND

CLASS E AIRSPACE AREAS;

AIRWAYS; ROUTES; AND REPORTING

POINTS

1. The authority citation for 14 CFR

part 71 continues to read as follows:

Authority: 49 U.S.C. 106(g), 40103, 40113,

40120; E.O. 10854, 24 FR 9565, 3 CFR, 1959–

1963 Comp., p. 389.

§ 71.1 [Amended]

2. The incorporation by reference in

14 CFR 71.1 of the Federal Aviation

Administration Order 7400.9E, Airspace

Designations and Reporting Points,

dated September 10, 1997, and effective

September 16, 1997, is amended as

follows:

Paragraph 6002 Class E airspace designated

as a surface area for an airport.

* * * * *

ANM ID E2 Twin Falls, ID [New]

Joslin Field-Magic Valley Regional Airport,

ID

(Lat. 42°28′55′′N, long. 114°29′16′′W)

Within a 4.3-mile radius of the Joslin FieldMagic Valley Regional Airport. This Class E

airspace area is effective during the specific

dates and times established in advance by a

Notice to Airmen. The effective date and time

will thereafter be continuously published in

the Airport/Facility Directory.

* * * * *

Issued in Seattle, Washington, on October

20, 1997.

Glenn A. Adams III,

Assistant Manager, Air Traffic Division,

Northwest Mountain Region.

[FR Doc. 97–28946 Filed 10–30–97; 8:45 am]

BILLING CODE 4910–13–M