Federal Register / Vol. 61, No. 97 / Friday, May 17, 1996 / Rules and Regulations 24883

(g) The modification required by this AD

shall be done in accordance with the

instructions included with Piper Kit 763 986,

Revised April 15, 1991. 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 New Piper Aircraft,

Inc., 2926 Piper Drive, Vero Beach, Florida

32960. Copies may be inspected at the FAA,

Central Region, Office of the Assistant Chief

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 (39–9622) supersedes

AD 80–14–06, Amendment 39–3805.

(i) This amendment (39–9622) becomes

effective on June 27, 1996.

Issued in Kansas City, Missouri, on May 8,

1996.

Henry A. Armstrong,

Acting Manager, Small Airplane Directorate,

Aircraft Certification Service.

[FR Doc. 96–12389 Filed 5–16–96; 8:45 am]

BILLING CODE 4910–13–U

14 CFR Part 39

[Docket No. 95–CE–18–AD; Amendment 39–

9626; AD 96–11–01]

RIN 2120–AA64

Airworthiness Directives; Jetstream

Aircraft Limited; Jetstream Models

3101 and 3201 Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment adopts a

new airworthiness directive (AD) that

applies to Jetstream Aircraft Limited

(JAL) Jetstream Models 3101 and 3201

airplanes. This action requires

modifying the automatic airframe de-ice

system to allow the wing and tail de-ice

boots to automatically operate through

one cycle. The present system repeats

the wing de-ice boot inflation cycle

before starting to inflate the tail de-ice

boots. Reports of ice accumulating on

the tail faster than the automatic tail deice boots inflate on the affected

airplanes prompted this action. The

actions specified by this AD are

intended to prevent excessive ice

accretion on the tail or wings of the

affected airplanes, which could result in

loss of control of the airplane.

DATES: Effective July 2, 1996.

The incorporation by reference of

certain publications listed in the

regulations is approved by the Director

of the Federal Register as of July 2, 1996.

ADDRESSES: Service information that

applies to this AD may be obtained from

Jetstream Aircraft Limited, Prestwick

International Airport, Ayrshire, KA9

2RW, Scotland, telephone (44–292)

79888; facsimile (44–292) 79703; or

Jetstream Aircraft Inc., Librarian, P.O.

Box 16029, Dulles International Airport,

Washington, D.C. 20041–6029;

telephone (703) 406–1161; facsimile

(703) 406–1469. This information may

also be examined at the Federal

Aviation Administration (FAA), Central

Region, Office of the Assistant Chief

Counsel, Attention: Rules Docket 95–

CE–18–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: Ms.

Dorenda Baker, Program Manager,

Brussels Aircraft Certification Office,

FAA, Europe, Africa, and Middle East

Office, c/o American Embassy, B–1000

Brussels, Belgium; telephone (32 2)

508.2715; facsimile (32 2) 230.6899; or

Mr. Jeffrey Morfitt, Project Officer,

Small Airplane Directorate, Aircraft

Certification Service, FAA, 1201

Walnut, suite 900, Kansas City, Missouri

64105; telephone (816) 426–6932;

facsimile (816) 426–2169.

SUPPLEMENTARY INFORMATION:

Events Leading to the AD

A proposal to amend part 39 of the

Federal Aviation Regulations (14 CFR

part 39) to include an AD that would

apply to JAL Jetstream Models 3101 and

3201 airplanes was published in the

Federal Register on February 21, 1996

(61 FR 6583). The action proposed to

require modifying the automatic

airframe de-ice system to allow the wing

and tail de-ice boot systems to

automatically operate through one

cycle. Accomplishment of the proposed

modification would be in accordance

with Jetstream Service Bulletin 30–JK

12033, Revision No. 1, dated October

20, 1995.

Interested persons have been afforded

an opportunity to participate in the

making of this amendment. Due

consideration has been given to the one

comment received.

Comment Resolution

The commenter supports the

proposal, but recommends that the final

rule not become effective until after May

1, 1996. The commenter explains that

this is necessary to ensure parts delivery

and subsequent scheduling of the

modification within the compliance

time. The issuance of this AD is well

after May 1, 1996, and the subsequent

effective date of the final rule gives this

commenter ample time to accomplish

the modification.

No comments were received regarding

the FAA’s determination of the cost

impact on the public.

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 260 airplanes

in the U.S. registry will be affected by

this AD, that it will take approximately

5 workhours per airplane to accomplish

the required action, and that the average

labor rate is approximately $60 an hour.

Parts cost approximately $50 per

airplane. Based on these figures, the

total cost impact of the AD on U.S.

operators is estimated to be $91,000.

This figure is based on the assumption

that no owner/operator of the affected

airplanes has accomplished the required

modification.

Jetstream has informed the FAA that

parts have been distributed to owners/

operators to equip approximately 22 of

the affected airplanes. Assuming that

each set of parts is installed on an

affected airplane, the cost impact of this

AD upon U.S. owners/operators of the

affected airplanes is reduced $7,700

from $91,000 to $83,300.

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
24884 Federal Register / Vol. 61, No. 97 / Friday, May 17, 1996 / Rules and Regulations

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:

96–11–01 Jetstream Aircraft Limited:

Amendment 39–9626; Docket No. 95–

CE–18–AD.

Applicability: Jetstream Models 3101 and

3201 airplanes (all serial numbers),

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 (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 within the next

1,000 hours time- in-service after the

effective date of this AD, unless already

accomplished.

To prevent excessive ice accretion on the

tail or wings of the affected airplanes, which

could result in loss of control of the airplane,

accomplish the following:

(a) Modify the automatic airframe de-ice

system in accordance with the

ACCOMPLISHMENT INSTRUCTIONS

section of Jetstream Service Bulletin No. 30–

JK 12033, Revision No. 1, dated October 20,

1995.

(b) 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.

(c) An alternative method of compliance or

adjustment of the compliance time that

provides an equivalent level of safety may be

approved by the Manager, Brussels Aircraft

Certification Office (ACO), Europe, Africa,

Middle East office, FAA, c/o American

Embassy, B–1000 Brussels, Belgium. The

request should be forwarded through an

appropriate FAA Maintenance Inspector,

who may add comments and then send it to

the Manager, Brussels ACO.

Note 2: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the Brussels ACO.

(d) The inspections required by this AD

shall be done in accordance with Jetstream

Service Bulletin No. 30–JK 12033, Revision

No. 1, dated October 20, 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 Limited, Manager Product

Support, Prestwick Airport, Ayrshire, KA9

2RW Scotland; or Jetstream Aircraft Inc.,

Librarian, P.O. Box 16029, Dulles

International Airport, Washington, DC,

20041–6029. Copies may be inspected at the

FAA, Central Region, Office of the Assistant

Chief 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.

(e) This amendment (39–9626) becomes

effective on July 2, 1996.

Issued in Kansas City, Missouri, on May

10, 1996.

Michael Gallagher,

Manager, Small Airplane Directorate, Aircraft

Certification Service.

[FR Doc. 96–12496 Filed 5–16–96; 8:45 am]

BILLING CODE 4910–13–U

14 CFR Part 39

[Docket No. 95–CE–79–AD; Amendment 39–

9627; AD 96–11–02]

RIN 2120–AA64

Airworthiness Directives; Jetstream

Aircraft Limited (Formerly British

Aerospace, Regional Airlines Limited)

HP137 Mk1, Jetstream Series 200, and

Jetstream Model 3101 Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment adopts a

new airworthiness directive (AD) that

applies to Jetstream Aircraft Limited

(JAL) HP137 Mk1, Jetstream series 200,

and Jetstream Model 3101 airplanes.

This action requires repetitively

inspecting the spigot housing plate for

cracks at the wing/fuselage forward

attachment sliding joint, replacing any

cracked housing plate, repetitively

inspecting the spigots and spigot posts

for corrosion and installing improved

spigots if corrosion is found that

exceeds certain limits, and eventually

installing improved spigots if corrosion

that does not exceed certain limits is

found. For certain affected airplanes,

this action requires repetitively

inspecting the spigot bushes for

migration gaps, replacing the bushes

with modified bushes if gaps are found

that exceed 0.5 inch, and eventually

replacing the bushes with modified

bushes if migration gaps are not found.

Reports of bush migration gaps found on

three of the affected airplanes and

another report of corrosion and several

cracks found on the spigot housing plate

on a Jetstream Model 3101 airplane

prompted this action. The actions

specified by this AD are intended to

prevent structural failure of the wing/

fuselage area caused by a cracked or

corroded spigot housing assembly.

DATES: Effective July 2, 1996.

The incorporation by reference of

certain publications listed in the

regulations is approved by the Director

of the Federal Register as of July 2, 1996.

ADDRESSES: Service information that

applies to this AD may be obtained from

Jetstream Aircraft Limited, Prestwick

International Airport, Ayrshire, KA9

2RW, Scotland, telephone (44–292)

79888; facsimile (44–292) 79703; or

Jetstream Aircraft Inc., Librarian, P.O.

Box 16029, Dulles International Airport,

Washington, D.C. 20041–6029;

telephone (703) 406–1161; facsimile

(703) 406–1469. This information may

also be examined at the Federal

Aviation Administration (FAA), Central

Region, Office of the Assistant Chief

Counsel, Attention: Rules Docket 95–

CE–79–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: Ms.

Dorenda Baker, Program Manager,

Brussels Aircraft Certification Office,

FAA, Europe, Africa, and Middle East

Office, c/o American Embassy, B–1000

Brussels, Belgium; telephone (32 2)

508.2715; facsimile (32 2) 230.6899; or

Mr. Jeffrey Morfitt, Project Officer,

Small Airplane Directorate, Aircraft

Certification Service, FAA, 1201

Walnut, suite 900, Kansas City, Missouri

64105; telephone (816) 426–6932;

facsimile (816) 426–2169.

SUPPLEMENTARY INFORMATION:

Events Leading to the AD

A proposal to amend part 39 of the

Federal Aviation Regulations (14 CFR

part 39) to include an AD that would

apply to JAL HP137 Mk1, Jetstream

series 200, and Jetstream Model 3101

airplanes was published in the Federal

Register on January 19, 1996 (61 FR