Federal Register / Vol. 62, No. 26 / Friday, February 7, 1997 / Rules and Regulations 5743

§ 39.13 [Amended]

2. Section 39.13 is amended by

adding the following new airworthiness

directive:

97–03–11 Saab Aircraft AB: Amendment

39–9916. Docket 96-NM–233-AD.

Applicability: Model SAAB 2000 series

airplanes, having serial numbers 002 through

025, 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.

Compliance: Required as indicated, unless

accomplished previously.

To prevent flame, fuel, and vapor from

entering compartments behind the firezone

compartment of the nacelle of the left and

right engines, which, if combined with a fire

source in a firezone compartment, could

result in an uncontrollable fire outside the

firezone compartment, accomplish the

following:

(a) Prior to the accumulation of 200 hours

time in service after the effective date of this

AD, modify and seal the firezone

compartment of the nacelle of the left and

right engines, in accordance with Saab

Service Bulletin 2000–54–008, dated March

7, 1996.

(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, 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 2: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the Standardization Branch,

ANM–113.

(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 and sealing shall be

done in accordance with Saab Service

Bulletin 2000–54–008, dated March 7, 1996.

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 SAAB Aircraft AB, SAAB Aircraft

Product Support, S–581.88, Linko ̈ping,

Sweden. 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.

(e) This amendment becomes effective on

March 14, 1997.

Issued in Renton, Washington, on January

29, 1997.

Darrell M. Pederson,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 97–2672 Filed 2–6–97; 8:45 am]

BILLING CODE 4910–13–U

14 CFR Part 39

[Docket No. 96–NM–97–AD; Amendment

39–9917; AD 96–03–12]

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

4101 airplanes, that requires a one-time

inspection for damage caused by arcing

and overheating of the electrical ground

posts (‘‘earth posts’’) and ground cables

for the direct current (DC) power

generation and propeller de-icing

systems of the left and right engines;

and repair and replacement, if

necessary. This amendment also

requires the eventual replacement of

earth posts with new posts. This

amendment is prompted by reports

indicating that earth posts on some

airplanes have failed due to overheating.

The actions specified by this AD are

intended to prevent potential

consequences of overheating, such as

failure of the DC power generation and

propeller de-icing systems.

DATES: Effective March 14, 1997.

The incorporation by reference of

certain publications listed in the

regulations is approved by the Director

of the Federal Register as of March 14,

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 20,

1996 (61 FR 59038). That action

proposed to require a one-time

inspection to detect damage or signs of

overheating of the earth posts and earth

cables for the DC power generation and

propeller de-icing systems of the left

and right engines. That action proposed

to require, prior to further flight, repair

and replacement of damaged earth posts

with new posts, and replacement of

damaged earth cables with new or

serviceable cables. That action also

proposed to require the eventual

replacement of all earth posts on all

affected airplanes.

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 44 Jetstream

Model 4101 airplanes of U.S. registry

will be affected by this proposed AD.

It will take approximately 8 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

required inspection on U.S. operators is

estimated to be $21,120, or $480 per

airplane.

It will take approximately 8 work

hours per airplane to accomplish the

required replacement of earth posts, at

an average labor rate of $60 per work

hour. Required parts will be provided

by the manufacturer at no charge. Based

on these figures, the cost impact of the

required replacement on U.S. operators

is estimated to be $21,120, or $480 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
5744 Federal Register / Vol. 62, No. 26 / Friday, February 7, 1997 / Rules and Regulations

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:

96–03–12 Jetstream Aircraft Limited:

Amendment 39–9917. Docket 96NM–97–

AD.

Applicability: Model 4101 airplanes having

constructor number 41004 through 41074

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 (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.

To prevent overheating of the electrical

ground posts (‘‘earth posts’’) for the direct

current (DC) power generation and de-icing

systems of the left and right engines, which

could result in such things as failure of these

systems, accomplish the following:

(a) Within 300 hours time-in-service after

the effective date of this AD, accomplish the

actions specified in paragraphs (a)(1) and

(a)(2) of this AD on both the left and right

engines:

(1) Inspect each earth post and earth post

bracket to detect damage caused by arcing,

signs that it has been overheated, and lateral

movement of the earth post, in accordance

with Part A of Jetstream Service Bulletin J41–

24–033, Revision 2, dated January 24, 1996.

If any discrepancy is detected, prior to

further flight, accomplish both paragraphs

(a)(1)(i) and (a)(1)(ii) of this AD:

(i) Repair any damage and lateral

movement in accordance with a method

approved by the Manager, Standardization

Branch, ANM–113, FAA, Transport Airplane

Directorate; and

(ii) Replace the earth post with a new earth

post in accordance with Part B of the service

bulletin.

(2) Inspect each ground cable (‘‘earth

cable’’) for the DC power generation and

propeller de-icing systems to detect damage

caused by arcing, and signs that the terminal

tags and cable insulation have been

overheated, in accordance with Part A of the

service bulletin. If any discrepancy is

detected, prior to further flight, replace the

earth cable with a new or serviceable cable,

in accordance with Part A of the service

bulletin.

(b) Within 6 months after the effective date

of this AD, replace each earth post with a

new earth post, in accordance with Part B of

Jetstream Service Bulletin J41–24–033,

Revision 2, dated January 24, 1996. Any earth

post that is replaced in accordance with

paragraph (a)(1)(ii) of this AD need not be

replaced again under the requirements of this

paragraph.

(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, 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 2: 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 actions shall be done in accordance

with Jetstream Service Bulletin J41–24–033,

Revision 2, dated January 24, 1996. 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 14, 1997.

Issued in Renton, Washington, on January

29, 1997.

Darrell M. Pederson,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 97–2673 Filed 2–6–97; 8:45 am]

BILLING CODE 4910–13–U

14 CFR Part 39

[Docket No. 96–NM–89–AD; Amendment

39–9918; AD 97–03–13]

RIN 2120–AA64

Airworthiness Directives;

Construcciones Aeronauticas, S.A.

(CASA), Model C–212 Series Airplanes

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment adopts a

new airworthiness directive (AD),

applicable to all CASA Model C–212

series airplanes, that requires that the

rudder pedal assemblies be adjusted

prior to each flight until the rudder

pedal setting mechanisms are modified.

This amendment also requires

replacement of the attachment rails for

certain flight crew seats. This

amendment is prompted by reports

indicating that the flight crew may not

be able to achieve the maximum

certified deflection of the rudder at the

airplane’s minimum controllable

airspeed and in other flight conditions,

because the existing range of settings for

adjusting the rudder pedals restricts the

flight crew in its ability to move the

rudder. This condition, if not corrected,

could result in insufficient rudder

deflection, and consequent reduction in

controllability of the airplane.

DATES: Effective March 14, 1997.

The incorporation by reference of

certain publications listed in the