38286 Federal Register / Vol. 63, No. 136 /Thursday, July 16, 1998 /Rules and Regulations

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 98–NM–149–AD; Amendment

39–10663; AD 98–15–12]

RIN 2120–AA64

Airworthiness Directives; Aerospatiale

Model ATR42 and 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

ATR42 and ATR72 series airplanes, that

requires a one-time inspection of the

electromagnetic interference (EMI) filter

capacitors and electronic cards of the

cabin air recirculation fans to detect

damage. This amendment also requires

replacement of damaged components

with new or serviceable parts, and

modification of the cabin air assembly

fans. 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 overheating and

consequent failure of the EMI filter

capacitors, which could result in

emission of toxic smoke and fumes

throughout the airplane, and consequent

adverse effects on flight crew and

passengers.

DATES: Effective August 20, 1998.

The incorporation by reference of

certain publications listed in the

regulations is approved by the Director

of the Federal Register as of August 20,

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 ATR42 and ATR72 series

airplanes was published in the Federal

Register on May 20, 1998 (63 FR 27688).

That action proposed to require a onetime inspection of the electromagnetic

interference (EMI) filter capacitors and

electronic cards of the cabin air

recirculation fans to detect damage.

That action also proposed to require

replacement of damaged components

with new or serviceable parts, and

modification of the cabin air assembly

fans.

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 or the FAA’s

determination of the cost to the public.

Explanation of Changes Made to This

Final Rule

In the applicability paragraph of the

proposal, the FAA inadvertently

referenced Avions de Transport

Regional Service Bulletin ATR42–21–

0069, dated February 5, 1998, and

Avions de Transport Regional Service

Bulletin ATR72–21–1048, dated

February 5, 1998, as Aerospatiale

Service Bulletins. Therefore, the FAA

has revised the final rule accordingly.

Conclusion

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

increase the economic burden on any

operator or increase the scope of the AD.

Interim Action

This is considered to be interim

action until final action is identified, at

which time the FAA may consider

additional rulemaking.

Cost Impact

The FAA estimates that 81 airplanes

of U.S. registry will be affected by this

AD.

It will take approximately 3 work

hours 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

inspection required by this AD on U.S.

operators is estimated to be $14,580, or

$180 per airplane.

It will take approximately 2 work

hours per airplane to accomplish the

required modification at an average

labor rate of $60 per work hour. The

cost of the required parts will be

minimal. Based on these figures, the

cost impact of the modification required

by this AD on U.S. operators is

estimated to be $9,720, or $120 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:

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:
Federal Register / Vol. 63, No. 136 /Thursday, July 16, 1998 /Rules and Regulations 38287

98–15–12 Aerospatiale: Amendment 39–

10663. Docket 98–NM–149–AD.

Applicability: Model ATR42–300, –320,

and –500 series airplanes, as listed in Avions

de Transport Regional Service Bulletin

ATR42–21–0069, dated February 5, 1998;

and Model ATR72–101, –102, –201, –202,

–211, –212, and –212A series airplanes, as

listed in Avions de Transport Regional

Service Bulletin ATR72–21–1048, dated

February 5, 1998; 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 as indicated, unless

accomplished previously.

To prevent overheating and consequent

failure of the electromagnetic interference

(EMI) filter capacitors, which could result in

emission of toxic smoke and fumes

throughout the airplane, and consequent

adverse effects on flight crew and passengers,

accomplish the following:

(a) Within 11 months after the effective

date of this AD, perform a one-time visual

inspection to detect damage of the EMI filter

capacitors and electronic cards of the cabin

air recirculation fan of the right and left airconditioning packs, in accordance with

Avions de Transport Regional Service

Bulletin ATR42–21–0069, dated February 5,

1998 (for Model ATR42 series airplanes), or

ATR72–21–1048, dated February 5, 1998 (for

Model ATR72 series airplanes), as applicable.

(1) If no discrepancy is detected, prior to

further flight, modify and re-identify each fan

assembly, in accordance with the applicable

service bulletin.

(2) If any discrepancy is detected, prior to

further flight, replace the damaged

components with new or serviceable

components, and modify and re-identify the

fan assembly, in accordance with the

applicable service bulletin.

Note 2: Avions de Transport Regional

Service Bulletin ATR42–21–0069, dated

February 5, 1998 (for Model ATR42 series

airplanes), and ATR72–21–1048, dated

February 5, 1998 (for Model ATR72 series

airplanes), reference EG&G Rotron Service

Bulletin 011232500–21–1, dated December

12, 1997, as an additional source of service

information for accomplishment of the

modification.

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

person shall install on any airplane a cabin

air-conditioning recirculation Rotron fan

having part number (P/N) 011232500 Amend.

A, or P/N 011494500 Amend. A, on the left

or right air-conditioning pack.

(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, 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, International Branch,

ANM–116.

Note 3: 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 Avions de Transport Regional Service

Bulletin ATR42–21–0069, dated February 5,

1998, or Avions de Transport Regional

Service Bulletin ATR72–21–1048, dated

February 5, 1998, as applicable. 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 4: The subject of this AD is addressed

in French airworthiness directives 98–070–

074(B) and 98–073–037(B), both dated

February 11, 1998.

(f) This amendment becomes effective on

August 20, 1998.

Issued in Renton, Washington, on July 8,

1998.

S.R. Miller,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 98–18772 Filed 7–15–98; 8:45 am]

BILLING CODE 4910–13–U

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 96–NM–230–AD; Amendment

39–10658; AD 98–15–07]

RIN 2120–AA64

Airworthiness Directives; Dassault

Model Mystere-Falcon 50 Series

Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment adopts a

new airworthiness directive (AD),

applicable to certain Dassault Model

Mystere-Falcon 50 series airplanes, that

requires installation of a reinforcement

fitting at the junction of the baggage

floor and frame 35 on both the left- and

right-hand sides of the airplane. 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 fatigue cracking in the subject

area, which could result in reduced

structural integrity of the airframe.

DATES: Effective August 20, 1998.

The incorporation by reference of

certain publications listed in the

regulations is approved by the Director

of the Federal Register as of August 20,

1998.

ADDRESSES: The service information

referenced in this AD may be obtained

from Dassault Falcon Jet, P.O. Box 2000,

South Hackensack, New Jersey 07606.

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 Dassault

Model Mystere-Falcon 50 series

airplanes was published in the Federal

Register on August 5, 1997 (62 FR

42077). That action proposed to require

installation of a reinforcement fitting at

the junction of the baggage floor and

frame 35 on both the left- and righthand sides of the airplane.

Comments

Interested persons have been afforded

an opportunity to participate in the

making of this amendment. Due

consideration has been given to the

comments received.

Request To Revise Cost Impact

Information

One commenter requests that the

FAA’s estimate of the number of

airplanes of U.S. registry affected by the

proposed AD be revised from 26 to 18

in the cost impact paragraph of the AD.

The commenter states that only 18

airplanes of U.S. registry would be

affected by the proposed AD because