Federal Register / Vol. 63, No. 79 / Friday, April 24, 1998 /Rules and Regulations 20299

(h) * * *

(3) Subject to the requirements of this

section, the Agency may approve a

Contract of Guarantee for a line of credit

to be secured by basic chattel or real

estate security in which the Agency has

subordinated its lien position in

accordance with § 1980.108.

* * * * *

Signed in Washington, D.C., on April 10,

1998.

August Schumacher, Jr.,

Under Secretary, Farm and Foreign

Agricultural Services.

Dated: April 10, 1998.

Jill Long Thompson,

Under Secretary, Rural Development.

[FR Doc. 98–10902 Filed 4–23–98; 8:45 am]

BILLING CODE 3410–05–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 97–NM–263–AD; Amendment

39–10483; AD 98–09–04]

RIN 2120–AA64

Airworthiness Directives; Aerospatiale

Model ATR72 Series Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment adopts a

new airworthiness directive (AD),

applicable to certain Aerospatiale Model

ATR72 series airplanes, that requires a

one-time high frequency eddy current

inspection to detect cracking of the

lower fuselage structure, and repair, if

necessary. This amendment also

requires modification of certain fastener

holes in the lower fuselage structure.

This amendment is prompted by

issuance of mandatory continuing

airworthiness information by a foreign

civil airworthiness authority. The

actions specified by this AD are

intended to prevent reduced structural

integrity of the airplane due to fatigue

cracking in the lower fuselage structure.

DATES: Effective May 29, 1998.

The incorporation by reference of

certain publications listed in the

regulations is approved by the Director

of the Federal Register as of May 29,

1998.

ADDRESSES: The service information

referenced in this AD may be obtained

from Aerospatiale, 316 Route de

Bayonne, 31060 Toulouse, Cedex 03,

France. 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:

Norman B. Martenson, Manager,

International Branch, ANM–116, FAA,

Transport Airplane Directorate, 1601

Lind Avenue, SW., Renton, Washington

98055–4056; telephone (425) 227–2110;

fax (425) 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 Aerospatiale

Model ATR72 series airplanes was

published in the Federal Register on

February 5, 1998 (63 FR 5900). That

action proposed to require a one-time

high frequency eddy current inspection

to detect cracking of the lower fuselage

structure, and repair, if necessary. That

action also proposed to require

modification of certain fastener holes in

the lower fuselage structure.

Comments

Interested persons have been afforded

an opportunity to participate in the

making of this amendment. Due

consideration has been given to the

single comment received.

The commenter supports the

proposed rule.

Conclusion

After careful review of the available

data, including the comment noted

above, 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 7 airplanes of

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

Accomplishment of the actions

specified in Aerospatiale Service

Bulletin ATR72–53–1022 will take

approximately 80 work hours per

airplane, at an average labor rate of $60

per work hour. Required parts will be

provided by the manufacturer at no cost

to the operators. Based on these figures,

the cost impact on U.S. operators of the

actions specified in this service bulletin

and required by this AD is estimated to

be $4,800 per airplane.

Accomplishment of the actions

specified in Aerospatiale Service

Bulletin ATR72–53–1034 will take

approximately 65 work hours per

airplane, at an average labor rate of $60

per work hour. Required parts will be

provided by the manufacturer at no cost

to the operators. Based on these figures,

the cost impact on U.S. operators of the

actions specified in this service bulletin

and required by this AD is estimated to

be $3,900 per airplane.

Accomplishment of the actions

specified in Aerospatiale Service

Bulletin ATR72–53–1053 will take

approximately 65 work hours per

airplane, at an average labor rate of $60

per work hour. Required parts will be

provided by the manufacturer at no cost

to the operators. Based on these figures,

the cost impact on U.S. operators of the

actions specified in this service bulletin

and required by this AD is estimated to

be $3,900 per airplane.

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:
20300 Federal Register / Vol. 63, No. 79 / Friday, April 24, 1998 /Rules and Regulations

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:

98–09–04 Aerospatiale: Amendment 39–

10483. Docket 97–NM–263–AD.

Applicability: Model ATR72 series

airplanes on which Aerospatiale

Modification 2879 or Modification 2628 has

not been incorporated, 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 (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 reduced structural integrity of

the airplane due to fatigue cracking in the

lower fuselage structure, accomplish the

following:

(a) Prior to the accumulation of 17,500 total

flight cycles, or within 500 flight cycles after

the effective date of this AD, whichever

occurs later: Except as provided in paragraph

(b) of this AD, perform a one-time high

frequency eddy current inspection to detect

fatigue cracking around the fastener holes in

the lower fuselage structure in the area of the

side brace fitting near frame 25 on the leftand right-hand sides, and modify crack-free

fastener holes, as required by paragraph (a)(1)

and/or (a)(2) of this AD, as applicable.

(1) For airplanes on which Aerospatiale

Modification 2879 has not been installed:

Perform the inspection and modification in

accordance with Aerospatiale Service

Bulletin ATR72–53–1022, Revision 2, dated

February 20, 1995.

(2) For airplanes on which Aerospatiale

Modification 2628 has not been installed:

Perform the inspection and modifications in

accordance with Aerospatiale Service

Bulletins ATR72–53–1034, Revision 1, and

ATR72–53–1053, Revision 1, both dated

March 28, 1995.

(b) If any crack or oversize hole is found

during the accomplishment of paragraph (a)

of this AD, and if any service bulletin listed

in paragraph (a) of this AD specifies to

contact the manufacturer for an appropriate

corrective action: Prior to further flight,

repair the discrepancy in accordance with a

method approved by the Manager,

International Branch, ANM–116, FAA,

Transport Airplane Directorate.

(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,

International Branch, ANM–116. Operators

shall submit their requests through an

appropriate FAA Principal Maintenance

Inspector, who may add comments and then

send it to the Manager, International Branch,

ANM–116.

Note 2: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the International Branch,

ANM–116.

(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 actions shall be done in accordance

with the following Aerospatiale service

bulletins, which contain the following list of

effective pages:

Service

bulletin

referenced

and date

Page number shown on page

Revision

level

shown on

page

Date shown on

page

ATR72–53–1034, Revision 1, March 28, 1995 ............ 1, 7, 9, 11–17, 20, 21, 23–25, 29, 30 ......................... 1 .............. March 28, 1995.

2–6, 8, 10, 18, 19, 22, 26–28 ..................................... Original .... November 4, 1994.

ATR72–53–1022, Revision 2, February 20, 1995 ....... 1, 11, 12, 16 ................................................................ 2 .............. February 20, 1995.

2 ................................................................................... 1 .............. November 10,

1994.

3–10, 13–15, 17–24 .................................................... Original .... July 29, 1994.

ATR72–53–1053, Revision 1, March 28, 1995 ............ 1, 6–8, 16, 19 .............................................................. 1 .............. March 28, 1995.

2–5, 9–15, 17, 18, 20 .................................................. Original .... November 7, 1994.

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 Aerospatiale, 316 Route de Bayonne,

31060 Toulouse, Cedex 03, France. 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.

Note 3: The subject of this AD is addressed

in French airworthiness directive 94–191–

022(B), dated August 17, 1994.

(f) This amendment becomes effective on

May 29, 1998.

Issued in Renton, Washington, on April 15,

1998.

Darrell M. Pederson,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 98–10478 Filed 4–23–98; 8:45 am]

BILLING CODE 4910–13–P

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 97–NM–226–AD; Amendment

39–10484; AD 98–09–05]

RIN 2120–AA64

Airworthiness Directives; British

Aerospace BAe Model ATP Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment adopts a

new airworthiness directive (AD),

applicable to certain British Aerospace

BAe Model ATP airplanes, that requires

repetitive inspections to detect

corrosion of the brake hydraulic

accumulators in the vicinity of the

mounting straps; and corrective actions,

if necessary. This amendment is

prompted by issuance of mandatory

continuing airworthiness information by

a foreign civil airworthiness authority.

The actions specified by this AD are

intended to detect and correct corrosion

of the brake hydraulic accumulators,

which could lead to loss of hydraulic

pressure and consequent loss of braking

capability of the airplane.

DATES: Effective May 29, 1998.

The incorporation by reference of

certain publications listed in the

regulations is approved by the Director

of the Federal Register as of May 29,

1998.

ADDRESSES: The service information

referenced in this AD may be obtained

from AI(R) American Support, Inc.,

13850 Mclearen Road, Herndon,

Virginia 20171. This information may be