Federal Register / Vol. 62, No. 23 / Tuesday, February 4, 1997 / Rules and Regulations 5145

later: Replace the jack pivot assembly with a

new, improved assembly, in accordance with

Raytheon Corporate Jets Service Bulletin

SB.32–233–3597A, dated July 28, 1995.

Accomplishment of this replacement

constitutes terminating action for the

inspection requirements of this AD.

(2) If no cracks are found during the

inspection required by paragraph (a) of this

AD, and the sidestay assembly has not been

overhauled prior to accomplishment of that

inspection: Prior to the accumulation of

4,000 total landings on the jack pivot

assembly, or within 300 landings after the

effective date of this AD, whichever occurs

later, replace the jack pivot assembly with a

new, improved assembly, in accordance with

Raytheon Corporate Jets Service Bulletin SB

32–233, Revision 2, dated July 28, 1995.

Accomplishment of this replacement

constitutes terminating action for the

inspection requirements of this AD.

(c) For Raytheon Model Hawker 800 and

1000 and Model DH/BH/HS/BAe 125–1A

through –1000A series airplanes equipped

with MLG sidestay assemblies on which

Post-Mod 252091 steel jack pivots (part

numbers 25UM1199A, 25UM1229A, and

258UM87–1A) have been installed on June

24, 1994, or later, except for airplanes as

specified in paragraph (d) of this AD: Replace

the jack pivot assembly with a new,

improved assembly in accordance with

Raytheon Corporate Jets Service Bulletin

SB.32–233–3597A, dated July 28, 1995, at the

later of the times specified in paragraph (c)(1)

or (c)(2) of this AD. Accomplishment of this

replacement constitutes terminating action

for the inspection requirements of this AD.

(1) Prior to the accumulation of 2,000 total

landings since installation of Post Mod

252091 steel jack pivots. Or

(2) Within 1,000 landings after the effective

date of this AD.

(d) For all Raytheon Model BAe 125 Series

800A C29A, U125, and Hawker 800 U125A

airplanes on which Post Mod 252091 steel

jack pivots (part numbers 25UM1199A,

25UM1229A, and 258UM87–1A) have been

installed: Accomplish paragraphs (d)(1) and

(d)(2) of this AD at the times specified in

those paragraphs.

(1) Perform a detailed visual inspection,

using a 10X magnifier, to detect cracking of

the sidestay assembly jack pivot of the leftand right-hand MLG, in accordance with

Raytheon Corporate Jets Service Bulletin SB

32–233, Revision 2, dated July 28, 1995, at

the later of the times specified in paragraph

(d)(1)(i) or (d)(1)(ii) of this AD. Thereafter,

repeat this inspection at intervals not to

exceed 200 landings, until the requirements

of paragraph (d)(2) of this AD are

accomplished.

(i) Prior to the accumulation of 1,200 total

landings since the installation of a steel jack

pivot (Post Mod 252091). Or

(ii) Within 56 days or within 200 landings

after the effective date of this AD, whichever

occurs first.

(2) Prior to the accumulation of 2,000 total

landings on the jack pivot, or within 300

landings after the effective date of this AD,

whichever occurs later: Replace the sidestay

jack pivot assembly with a new, improved

assembly (part numbers 25UM1335–1A and

25–8UM173–1A) in accordance with

Raytheon Corporate Jets Service Bulletin

SB.32–233–3597A, dated July 28, 1995.

Accomplishment of this replacement

constitutes terminating action for the

inspection requirements of this AD.

(e) If any crack is detected during any

inspection required by this AD, replace the

sidestay jack pivot assembly with a new,

improved assembly (part numbers

25UM1335–1A and 25–8UM173–1A) in

accordance with Raytheon Corporate Jets

Service Bulletin SB.32–233–3597A, dated

July 28, 1995, at the time specified in

paragraph (e)(1) or (e)(2) of this AD, as

applicable. Accomplishment of this

replacement constitutes terminating action

for the inspection requirements of this AD.

(1) For airplanes on which a crack is

detected that does not exceed the limits

specified in the service bulletin, replace the

assembly at the later of the times specified

in paragraph (e)(1)(i) or (e)(1)(ii) of this AD.

(i) Within 100 landings after the effective

date of this AD. Or;

(ii) Within 100 landings after the initial

detection of the cracking.

(2) For airplanes on which a crack is

detected that exceeds the limits specified in

the service bulletin, prior to further flight,

replace the assembly in accordance with the

service bulletin.

(f) 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, 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 4: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the Standardization Branch,

ANM–113.

(g) 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.

(h) The actions shall be done in accordance

with the following Raytheon Corporate Jets

service bulletins, which contain the specified

list of effective pages:

Service bulletin referenced and date Page No. Revision level

shown on page

Date shown on

page

SB 32–233, June 24, 1994 ............................................................................................ 1–10 ....................... Original ............. June 24, 1994.

SB 32–233 Revision 1, July 8, 1994 ............................................................................. 1, 2, 5 ....................

3, 4, 6–10 ..............

1 .......................

Original .............

July 8, 1994.

June 24, 1994.

SB 32–233 Revision 2, July 28, 1995 ........................................................................... 1–4, 6, 7, 9 ............

5 .............................

8, 10 .......................

2 .......................

1 .......................

Original .............

July 28, 1995.

July 8, 1994.

June 24, 1994.

SB.32–233–3597A, July 28, 1995 ................................................................................. 1–8 ......................... Original ............. July 28, 1995.

The incorporation by reference of Raytheon

Corporate Jets Service Bulletin SB 32–233,

dated June 24, 1994, was approved

previously by the Director of the Federal

Register in accordance with 5 U.S.C. 552(a)

and 1 CFR part 51 as of February 3, 1995 (60

FR 330, January 4, 1995). The incorporation

by reference of the remainder of the service

documents listed above is 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 Office of the Federal Register, 800 North

Capitol Street, NW., Suite 700, Washington,

DC.

(i) This amendment becomes effective on

March 11, 1997.

Issued in Renton, Washington, on January

27, 1997.

Darrell M. Pederson,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 97–2518 Filed 2–3–97; 8:45 am]

BILLING CODE 4910–13–U

14 CFR Part 39

[Docket No. 96–NM–86–AD; Amendment

39–9914; AD 97–03–08]

RIN 2120–AA64

Airworthiness Directives; Jetstream

Model 4101 Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment adopts a

new airworthiness directive (AD),

applicable to certain Jetstream Model
5146 Federal Register / Vol. 62, No. 23 / Tuesday, February 4, 1997 / Rules and Regulations

4101 airplanes, that requires repetitive

inspections to detect cracking of the

offset lightening hole on the drag brace

of the left and right main landing gear

(MLG); and replacement of these braces

with braces having a centralized

lightening hole. This replacement

terminates the repetitive inspections

This amendment is prompted by a

report indicating that fatigue cracking

was detected on the upper link of a drag

brace. The actions specified by this AD

are intended to prevent fatigue cracking

of the drag braces of the MLG, which,

if not corrected, could cause the MLG to

fail and, consequently, result in reduced

controllability of the airplane during

takeoff, landing, and taxiing.

DATES: Effective March 11, 1997.

The incorporation by reference of

certain publications listed in the

regulations is approved by the Director

of the Federal Register as of March 11,

1997.

ADDRESSES: The service information

referenced in this AD 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

Federal Aviation Administration (FAA),

Transport Airplane Directorate, Rules

Docket, 1601 Lind Avenue, SW.,

Renton, Washington; or at the Office of

the Federal Register, 800 North Capitol

Street, NW., Suite 700, Washington, DC.

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: 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 Jetstream

Model 4101 airplanes was published in

the Federal Register on November 12,

1996 (61 FR 58016). That action

proposed to require repetitive detailed

visual inspections of the offset

lightening hole on the drag brace of the

left and right MLG to detect cracking.

That action also proposed to require,

prior to further flight, the replacement

of any cracked brace with a brace having

a centralized lightening hole. Such

replacement would constitute

terminating action for the repetitive

detailed visual inspections.

Interested persons have been afforded

an opportunity to participate in the

making of this amendment. No

comments were submitted in response

to the proposal or the FAA’s

determination of the cost to the public.

Conclusion

The FAA has determined that air

safety and the public interest require the

adoption of the rule as proposed.

Cost Impact

The FAA estimates that 1 Jetstream

Model 4101 airplane of U.S. registry

will be affected by this AD.

It will take approximately 1 work

hour per airplane to accomplish the

required inspection, at an average labor

rate of $60 per work hour. Based on

these figures, the cost impact of the

required inspection on the single U.S.

operator is estimated to be $60 per

inspection cycle.

It will take approximately 2 work

hours per airplane to accomplish the

required replacement, at an average

labor rate of $60 per work hour.

Required parts will be provided by the

manufacturer at no cost to the operator.

Based on these figures, the cost impact

of the required replacement on the

single U.S. operator is estimated to be

$120.

The cost impact figures discussed

above are 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.

§ 39.13 [Amended]

2. Section 39.13 is amended by

adding the following new airworthiness

directive:

97–03–08 Jetstream Aircraft Limited:

Amendment 39–9914. Docket 96–NM–

86–AD.

Applicability: Model 4101 airplanes having

constructors numbers 41004 through 41009

inclusive, and 41017; equipped with a main

landing gear (MLG) on which drag braces

having Jetstream part numbers (P/N)

AIR84352–0 through AIR84352–4, inclusive,

and having offset lightening holes, are

installed; certificated in any category.

Note 1: Drag braces having Jetstream part

numbers (P/N) AIR84352–0 through

AIR84352–4 inclusive, can have either offset

or centralized lightening holes. This AD

applies only to those airplanes equipped

with those drag braces that have the offset

lightening holes.

Note 2: 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 (c) 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 fatigue cracking of the drag

brace of the left and right MLG which, if not

corrected, could cause the MLG to fail and,

consequently, lead reduced controllability of

the airplane during takeoff, landing, and

taxiing, accomplish the following:

(a) Within 50 hours time-in-service after

the effective date of this AD, perform a

detailed visual inspection to detect cracking

at the offset lightening hole on the drag brace

of the left and right MLG, in accordance with
Federal Register / Vol. 62, No. 23 / Tuesday, February 4, 1997 / Rules and Regulations 5147

Part 1 of Jetstream Service Bulletin J41–32–

049, Revision 1, dated January 15, 1996.

Note 3: Accomplishment of the visual

inspection in accordance with Part 1 of

Jetstream Service Bulletin J41–32–049, dated

November 21, 1995, is considered acceptable

for compliance with this paragraph.

(1) If no cracking is detected, repeat this

inspection thereafter at intervals not to

exceed 50 hours time-in-service until the

requirements of paragraph (b) of this AD have

been accomplished.

(2) If any cracking is detected, prior to

further flight, replace the drag brace with a

drag brace that has Jetstream part number (P/

N) AIR84352–4 and a centralized lightening

hole, in accordance with Part 2 of Jetstream

Service Bulletin J41–32–049, Revision 1,

dated January 15, 1996. This replacement

constitutes terminating action for the

repetitive inspections and replacement of

that brace required by paragraphs (a) and (b),

respectively, of this AD.

Note 4: Accomplishment of the

replacement in accordance with Part 2 of

Jetstream Service Bulletin J41–32–049, dated

November 21, 1995, is considered acceptable

for compliance with paragraphs (a)(2) and (b)

of this AD.

(b) Within two years after the effective date

of this AD, replace any MLG drag brace that

has P/N AIR84352–0 through AIR84352–4,

inclusive, and an offset lightening hole, with

a drag brace that has Jetstream P/N

AIR84352–4 and a centralized lightening

hole, in accordance with Part 2 of Jetstream

Service Bulletin J41–32–049, Revision 1,

dated January 15, 1996. This replacement

constitutes terminating action for the

repetitive inspections required by paragraph

(a) of this AD.

(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,

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 5: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the Standardization Branch,

ANM–113.

(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 airplane to

a location where the requirements of this AD

can be accomplished.

(e) The inspections and replacments shall

be done in accordance with Jetstream Service

Bulletin J41–32–049, Revision 1, dated

January 15, 1996, which contains the

following list of effective pages:

Page No.

Revision

level

shown on

page

Date shown on

page

1, 3 ............... 1 .............. Jan. 15, 1996.

Page No.

Revision

level

shown on

page

Date shown on

page

2, 4–9 ........... Original .... Nov. 21, 1995.

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

Dulles International Airport, Washington, DC

20041–6029. Copies may be inspected at the

FAA, Transport Airplane Directorate, 1601

Lind Avenue, SW., Renton, Washington; or at

the Office of the Federal Register, 800 North

Capitol Street, NW., suite 700, Washington,

DC.

(f) This amendment becomes effective on

March 11, 1997.

Issued in Renton, Washington, on January

28, 1997.

Darrell M. Pederson,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 97–2609 Filed 2–3–97; 8:45 am]

BILLING CODE 4910–13–U

14 CFR Part 71

[Airspace Docket No. 97–ASO–2]

Amendment to Class D Airspace;

Homestead, FL

AGENCY: Federal Aviation

Administration (FAA), DOT.

ACTION: Final rule.

SUMMARY: This amendment removes the

Class D reference to effective days and

times, and revokes the Class E2 airspace

at Homestead, FL. The control tower is

open continuously at the airport.

Therefore, the reference to effective days

and times, and the Class E2 airspace is

not necessary. This amendment also

reflects the current name of the airport.

The name of the airport has changed

from Homestead AFB to Dade CountyHomestead Regional Airport.

EFFECTIVE DATE: 0901 UTC, March 27,

1997.

FOR FURTHER INFORMATION CONTACT:

Benny L. McGlamery, Operations

Branch, Air Traffic Division, Federal

Aviation Administration, P.O. Box

20636, Atlanta, Georgia 30320;

telephone (404) 305–5570.

SUPPLEMENTARY INFORMATION:

History

The control tower at Homestead, FL,

is open continuously. Therefore, the

reference to days and times in the Class

D airspace description can be deleted.

As a result, the Class D airspace

becomes continuous and the Class E2

airspace can be removed. The former

Homestead AFB has been redesignated

Dade County-Homestead Regional

Airport. This action will have no impact

on the users of the airspace in the

vicinity of the airport. This rule will

become effective on the date specified

in the DATES section. Since this action

only makes a technical amendment to

the Class D airspace and eliminates the

requirement for Class E2 airspace,

which has no impact on users of the

airspace in the vicinity of the airport,

notice and public procedure under 5

U.S.C. 553(b) are unnecessary.

The Rule

This amendment to Part 71 of the

Federal Aviation Regulations (14 CFR

part 71) modifies the Class D airspace

description at Homestead, FL, to reflect

that the airspace is continuous, removes

the Class E2 airspace and corrects the

name of the airport from Homestead

AFB to Dade County-Homestead

Regional Airport.

The FAA has determined that this

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—[AMENDED]

1. The authority citation for 14 CFR

Part 71 continues to read as follows:

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

40120; EO 10854, 24 FR 9565, 3 CFR, 1959–

1963 Comp., p. 389; 14 CFR 11.69.

§ 71.1 [Amended]

2. The incorporation by reference in

14 CFR 71.1 of Federal Aviation

Administration Order 7400.9D, Airspace

Designations and Reporting Points,

dated September 4, 1996, and effective