Federal Register / Vol. 62, No. 244 / Friday, December 19, 1997 / Rules and Regulations 66511

Support, P.O. Box 7706, Wichita, Kansas

67277. 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.

(i) This amendment (39–10259) becomes

effective on February 2, 1998.

Issued in Kansas City, Missouri, on

December 10, 1997.

Michael Gallagher,

Manager, Small Airplane Directorate, Aircraft

Certification Service.

[FR Doc. 97–32993 Filed 12–18–97; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 97–NM–140–AD; Amendment

39–10253; AD 97–26–10]

RIN 2120–AA64

Airworthiness Directives; Raytheon

Model Hawker 1000 Series Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment adopts a

new airworthiness directive (AD),

applicable to certain Raytheon Model

Hawker 1000 series airplanes, that

requires modifying the aft core cowl

nozzles of the engine nacelles. This

amendment is prompted by a report

indicating that the sealant on the core

cowl nozzles may extend higher than

the forward flange of the core cowl

nozzles, which could result in contact

between the cowl sealant surface and

the lever of the engine mechanical overspeed control system. The actions

specified by this AD are intended to

prevent such contact, which could

cause the over-speed system to function

improperly and consequent engine

structural failure.

DATES: Effective January 23, 1998.

The incorporation by reference of

certain publications listed in the

regulations is approved by the Director

of the Federal Register as of January 23,

1998.

ADDRESSES: The service information

referenced in this AD may be obtained

from Raytheon Aircraft Company,

Manager, Service Engineering, Hawker

Customer Support Department, P.O. Box

85, Wichita, Kansas 67201–0085. 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 FAA,

Small Airplane Directorate, Wichita

Aircraft Certification Office, 1801

Airport Road, Room 100, Mid-Continent

Airport, Wichita, Kansas; or at the

Office of the Federal Register, 800 North

Capitol Street, NW., suite 700,

Washington, DC.

FOR FURTHER INFORMATION CONTACT:

Randy Griffith, Aerospace Engineer,

Systems and Propulsion Branch, ACE–

116W, FAA, Small Airplane Directorate,

Wichita Aircraft Certification Office,

1801 Airport Road, Room 100, MidContinent Airport, Wichita, Kansas

67209; telephone (316) 946–4145; fax

(316) 946–4407.

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 Raytheon

Model Hawker 1000 series airplanes

was published in the Federal Register

on October 1, 1997 (62 FR 51385). That

action proposed to require modifying

the aft core cowl nozzles of the engine

nacelles.

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.

Change to Cost Impact Information

The FAA has determined that 48

airplanes, rather than 14 airplanes (as

stated in the cost impact paragraph of

the proposal), will be affected by this

AD. The FAA has revised the cost

impact information, below, to reflect

this change.

Conclusion

After careful review of the available

data, the FAA has determined that air

safety and the public interest require the

adoption of the rule with the change

previously described. The FAA has

determined that this change will neither

significantly increase the economic

burden on any operator nor increase the

scope of the AD.

Cost Impact

There are approximately 52 Model

Hawker 1000 series airplanes of the

affected design in the worldwide fleet.

The FAA estimates that 48 airplanes of

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

that it will take approximately 4 work

hours per airplane to accomplish the

required actions, and that the average

labor rate is $60 per work hour.

Required parts will be provided by the

manufacturer at no cost to operators.

Based on these figures, the cost impact

of the AD on U.S. operators is estimated

to be $11,520, or $240 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 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 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.
66512 Federal Register / Vol. 62, No. 244 / Friday, December 19, 1997 / Rules and Regulations

§ 39.13 [Amended]

2. Section 39.13 is amended by

adding the following new airworthiness

directive:

97–26–10 Raytheon Aircraft Company

(Formerly Raytheon Aircraft

Corporation; Beech Aircraft

Corporation; Raytheon Corporate Jets,

Inc.; British Aerospace, PLC;

deHavilland; Hawker Siddeley):

Amendment 39–10253. Docket 97–NM–

140–AD.

Applicability: Model Hawker 1000 series

airplanes; serial numbers 258151, 258159,

and 259003 through 259052 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

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.

To prevent contact between the cowl

sealant surface and the lever of the engine

mechanical over-speed control system, which

could cause the over-speed system to

function improperly and consequent engine

structural failure; accomplish the following:

(a) Within 150 flight hours or 3 months

after the effective date of this AD, whichever

occurs first, modify the aft core cowl nozzles

of the left- and right-hand engine nacelles in

accordance with Raytheon Service Bulletin

SB.71–48–25F021B, dated May 20, 1997.

Note 2: The Raytheon service bulletin

references Nordam Hawker 1000 Service

Bulletin PW300 71–9, dated April 29, 1995,

as the appropriate source of service

information for accomplishment of the

modification.

(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, Wichita

Aircraft Certification Office (ACO), FAA,

Small 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, Wichita ACO.

Note 3: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the Wichita 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) The modification shall be done in

accordance with Raytheon Service Bulletin

SB.71–48–25F021B, dated May 20, 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 Raytheon Aircraft Company, Manager,

Service Engineering, Hawker Customer

Support Department, P.O. Box 85, Wichita,

Kansas 67201–0085. Copies may be inspected

at the FAA, Transport Airplane Directorate,

1601 Lind Avenue, SW., Renton,

Washington; or at the FAA, Small Airplane

Directorate, Wichita Aircraft Certification

Office, 1801 Airport Road, Room 100, MidContinent Airport, Wichita, Kansas; or at the

Office of the Federal Register, 800 North

Capitol Street, NW., suite 700, Washington,

DC.

(e) This amendment becomes effective on

January 23, 1998.

Issued in Renton, Washington, on

December 11, 1997.

Gilbert L. Thompson,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 97–32998 Filed 12–18–97; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 97–NM–46–AD; Amendment

39–10249; AD 97–26–06]

RIN 2120–AA64

Airworthiness Directives; Empresa

Brasileira de Aeronautica, S.A.

(EMBRAER) Model EMB–120 Series

Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment adopts a

new airworthiness directive (AD),

applicable to all EMBRAER Model

EMB–120 series airplanes, that requires

revising the Airplane Flight Manual

(AFM) to include requirements for

activation of the ice protection systems,

and to add information regarding

operation in icing conditions. This

amendment also requires installing an

ice detector system and revising the

AFM to include procedures for testing

system integrity. This amendment is

prompted by reports indicating that

flightcrews experienced difficulties

controlling the airplane during (or

following) flight in normal icing

conditions, when the ice protection

system either was not activated when

ice began to accumulate on the airplane,

or the ice protection system was never

activated. These difficulties may have

occurred because the flightcrews did not

recognize that a significant enough

amount of ice had formed on the

airplane to require activation of the

deicing equipment. The actions

specified by this AD are intended to

ensure that the flightcrew is able to

recognize the formation of significant

ice accretion and take appropriate

action; such formation of ice could

result in reduced controllability of the

airplane in normal icing conditions.

DATES: Effective January 23, 1998.

The incorporation by reference of

certain publications listed in the

regulations is approved by the Director

of the Federal Register as of January 23,

1998.

ADDRESSES: The service information

referenced in this AD may be obtained

from EMBRAER, Empresa Brasileira De

Aeronautica S/A, Sao Jose Dos Campos,

Brazil. 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 FAA, Small

Airplane Directorate, Atlanta Aircraft

Certification Office, Campus Building,

1701 Columbia Avenue, suite 2–160,

College Park, Georgia; or at the Office of

the Federal Register, 800 North Capitol

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

FOR FURTHER INFORMATION CONTACT:

Carla Worthey, Aerospace Engineer,

Systems and Flight Test Branch, ACE–

116A, FAA, Small Airplane Directorate,

Atlanta Aircraft Certification Office,

Campus Building, 1701 Columbia

Avenue, suite 2–160, College Park,

Georgia 30337–2748; telephone (770)

703–6062; 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 all EMBRAER

Model EMB–120 series airplanes was

published in the Federal Register on

May 13, 1997 (62 FR 26258). That action

proposed to require revising the

Airplane Flight Manual (AFM) to

include requirements for activation of

the ice protection systems, and to add

information regarding operation in icing

conditions. That action also proposed to

require installing an ice detector system

and revising the AFM to include

procedures for testing system integrity.

Interested persons have been afforded

an opportunity to participate in the

making of this amendment. Due

consideration has been given to the

comments received.

Support for the Proposal

Several commenters support the

FAA’s intent to revise the FAAapproved AFM procedures for flight in