Federal Register / Vol. 60, No. 61 / Thursday, March 30, 1995 / Proposed Rules 16395

provides an acceptable level of safety may be

used if approved by the Manager, Seattle

Aircraft Certification Office (ACO), 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, Seattle ACO.

Note 2: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the Seattle ACO.

(e) 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.

Issued in Renton, Washington, on May 24,

1995.

Darrell M. Pederson,

Acting Manager, Transport Airplane

Directorate, Aircraft Certification Service.

[FR Doc. 95–7781 Filed 3–29–95; 8:45 am]

BILLING CODE 4910–13–U

14 CFR Part 39

[Docket No. 94–CE–32–AD]

Airworthiness Directives; Stemme S10

Gliders

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Notice of proposed rulemaking

(NPRM).

SUMMARY: This document proposes to

adopt a new airworthiness directive

(AD) that would apply to certain

Stemme S10 gliders. The proposed

action would require modifying the

rudder control cable system. Rupture of

a turnbuckle eye bolt in the rudder

control cable system on one of the

affected gliders prompted the proposed

action. The actions specified by the

proposed AD are intended to prevent

rudder control cable system failure

caused by rupture of the turnbuckle eye

bolt, which, if not detected and

corrected, could result in loss of rudder

control.

DATES: Comments must be received on

or before June 16, 1995.

ADDRESSES: Submit comments in

triplicate to the Federal Aviation

Administration (FAA), Central Region,

Office of the Assistant Chief Counsel,

Attention: Rules Docket No. 94–CE–32–

AD, Room 1558, 601 E. 12th Street,

Kansas City, Missouri 64106. Comments

may be inspected at this location

between 8 a.m. and 4 p.m., Monday

through Friday, holidays excepted.

Service information that applies to the

proposed AD may be obtained from

Stemme GmbH & Co. KG, Flugplatz

Gebaude 47, D–15344 Staussberg,

Germany. This information also may be

examined at the Rules Docket at the

address above.

FOR FURTHER INFORMATION CONTACT: Mr.

Herman C. Belderok, Project Officer,

Gliders, Small Airplane Directorate,

Aircraft Certification Service, FAA,

1201 Walnut, suite 900, Kansas City,

Missouri 64106; telephone (816) 426–

6932; facsimile (816) 426–2169.

SUPPLEMENTARY INFORMATION:

Comments Invited

Interested persons are invited to

participate in the making of the

proposed rule by submitting such

written data, views, or arguments as

they may desire. Communications

should identify the Rules Docket

number and be submitted in triplicate to

the address specified above. All

communications received on or before

the closing date for comments, specified

above, will be considered before taking

action on the proposed rule. The

proposals contained in this notice may

be changed in light of the comments

received.

Comments are specifically invited on

the overall regulatory, economic,

environmental, and energy aspects of

the proposed rule. All comments

submitted will be available, both before

and after the closing date for comments,

in the Rules Docket for examination by

interested persons. A report that

summarizes each FAA-public contact

concerned with the substance of this

proposal will be filed in the Rules

Docket.

Commenters wishing the FAA to

acknowledge receipt of their comments

submitted in response to this notice

must submit a self-addressed, stamped

postcard on which the following

statement is made: ‘‘Comments to

Docket No. 94–CE–32–AD.’’ The

postcard will be date stamped and

returned to the commenter.

Availability of NPRMs

Any person may obtain a copy of this

NPRM by submitting a request to the

FAA, Central Region, Office of the

Assistant Chief Counsel, Attention:

Rules Docket No. 94–CE–32–AD, Room

1558, 601 E. 12th Street, Kansas City,

Missouri 64106.

Discussion

The Luftfarht-Bundesant (LBA),

which is the airworthiness authority for

Germany, recently notified the FAA that

an unsafe condition may exist on

Stemme S10 gliders. The LBA reports

that the rudder control cable turnbuckle

eye bolt ruptured on one of the affected

gliders, which resulted in loss of rudder

control. Under the current

configuration, the rudder control cables

from the right and left pedals meet at

the turnbuckle in the tailboom in a way

that subjects the turnbuckle eye bolt to

resistant forces (tensile and bending)

that could pull the bolt from the rudder

assembly. If not detected and corrected,

rudder control cable turnbuckle eye bolt

rupture could result in rudder control

cable system failure and subsequent loss

of rudder control.

Stemme has issued Service Bulletin

(SB) A31–10–018, dated June 3, 1994,

which specifies procedures for

modifying the rudder control cable

system on these S10 gliders. Pages 1–3

of this service bulletin are written in

German and pages 4–6 are English

translations. The LBA classified this

service bulletin as mandatory and

issued LBA AD 94–260, dated August

25, 1994, in order to assure the

continued airworthiness of these gliders

in Germany.

This glider model is manufactured in

Germany and is type certificated for

operation in the United States under the

provisions of section 21.29 of the

Federal Aviation Regulations (14 CFR

21.29) and the applicable bilateral

airworthiness agreement. Pursuant to

this bilateral airworthiness agreement,

the LBA has kept the FAA informed of

the situation described above. The FAA

has examined the findings of the LBA,

reviewed all available information, and

determined that AD action is necessary

for products of this type design that are

certificated for operation in the United

States.

Since an unsafe condition has been

identified that is likely to exist or

develop in other Stemme S10 gliders of

the same type design, the proposed AD

would require modifying the rudder

control cable system. The proposed

action would be accomplished in

accordance with the instructions to

Stemme SB A31–10–018 (pages 4–6),

dated June 3, 1994.

The FAA estimates that 3 gliders in

the U.S. registry would be affected by

the proposed AD, that it would take

approximately 4 workhours per glider to

accomplish the proposed action, and

that the average labor rate is

approximately $60 an hour. Parts cost

approximately $56 per glider. Based on

these figures, the total cost impact of the

proposed AD on U.S. operators is

estimated to be $888 ($296 per

airplane). This figure is based on the

assumption that no affected owner/

operator of the affected gliders has

incorporated the proposed modification.

The regulations proposed herein

would not have substantial direct effects

on the States, on the relationship
16396 Federal Register / Vol. 60, No. 61 / Thursday, March 30, 1995 / Proposed Rules

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

proposal would 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) if

promulgated, 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 draft

regulatory evaluation prepared for this

action has been placed in the Rules

Docket. A copy of it may be obtained by

contacting the Rules Docket at the

location provided under the caption

ADDRESSES.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation

safety, Safety.

The Proposed Amendment

Accordingly, pursuant to the

authority delegated to me by the

Administrator, the Federal Aviation

Administration proposes to amend 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. App. 1354(a), 1421

and 1423; 49 U.S.C. 106(g); and 14 CFR

11.89.

§ 39.13 [AMENDED]

2. Section 39.13 is amended by

adding a new AD to read as follows:

Stemme: Docket No. 94–CE–32–AD.

Applicability: S10 gliders (serial numbers

10–03 through 10–58), certificated in any

category.

Note 1: This AD applies to each glider

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

gliders that have been modified, altered, or

repaired so that the performance of the

requirements of this AD is affected, the

owner/operator must use the authority

provided in paragraph (c) of this AD to

request approval from the FAA. This

approval may address either no action, if the

current configuration eliminates the unsafe

condition, or different actions necessary to

address the unsafe condition described in

this AD. Such a request should include an

assessment of the effect of the changed

configuration on the unsafe condition

addressed by this AD. In no case does the

presence of any modification, alteration, or

repair remove any glider from the

applicability of this AD.

Compliance: Required upon the

accumulation of 150 hours time-in-service

(TIS) or within the next 20 hours TIS after

the effective date of this AD, whichever

occurs later, unless already accomplished.

To prevent rudder control cable system

failure caused by rupture of the turnbuckle

eye bolt, which, if not detected and

corrected, could result in loss of rudder

control, accomplish the following:

(a) Modify the rudder control cable system

in accordance with the instructions in

Stemme Service Bulletin A31–10–018 (pages

4–6), dated June 3, 1994.

(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 glider 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, Small Airplane

Directorate, FAA, 1201 Walnut, suite 900,

Kansas City, Missouri 64106. The request

should be forwarded through an appropriate

FAA Maintenance Inspector, who may add

comments and then send it to the Manager,

Small Airplane Directorate.

Note 2: Information concerning the

existence of approved alternative methods of

compliance with this AD, if any, may be

obtained from the Small Airplane

Directorate.

(d) All persons affected by this directive

may obtain copies of the document referred

to herein upon request to Stemme GmbH &

Co. KG, Flugplatz Gebaude 47, D–15344

Staussberg, Germany; or may examine this

document at the FAA, Central Region, Office

of the Assistant Chief Counsel, Room 1558,

601 E. 12th Street, Kansas City, Missouri

64106.

Issued in Kansas City, Missouri, on March

24, 1995.

Dwight A. Young,

Acting Manager, Small Airplane Directorate,

Aircraft Certification Service.

[FR Doc. 95–7787 Filed 3–29–95; 8:45 am]

BILLING CODE 4910–13–U

14 CFR Part 39

[Docket No. 94–CE–36–AD]

Airworthiness Directives; HOAC

AUSTRIA GmbH HK 36R ‘‘Super

Dimona’’ Gliders

AGENCY: Federal Aviation

Administration, DOT.

ACTION: Notice of proposed rulemaking

(NPRM).

SUMMARY: This document proposes to

adopt a new airworthiness directive

(AD) that would apply to certain HOAC

AUSTRIA GmbH (HOAC) HK 36R

‘‘Super Dimona’’ gliders. The proposed

action would require inspecting the

exhaust system for corrosion, replacing

the exhaust system if corrosion is found,

and installing a carbon monoxide

detector. Reports received by the

Federal Aviation Administration (FAA)

of severe exhaust system corrosion on

the affected gliders, including one of

excessive corrosion (rusting through),

prompted the proposed action. The

actions specified by the proposed AD

are intended to prevent carbon

monoxide leakage caused by a corroded

exhaust system, which, if not detected

and corrected, could lead to passenger

injuries.

DATES: Comments must be received on

or before June 16, 1995.

ADDRESSES: Submit comments in

triplicate to the FAA, Central Region,

Office of the Assistant Chief Counsel,

Attention: Rules Docket No. 94–CE–36–

AD Room 1558, 601 E. 12th Street,

Kansas City, Missouri 64106. Comments

may be inspected at this location

between 8 a.m. and 4 p.m., Monday

through Friday, holidays excepted.

Service information that applies to the

proposed AD may be obtained from

HOAC AUSTRIA GmbH, N.A. Otto

Strasse 5, A–2700 Wiener Neustadt,

Austria. This information also may be

examined at the Rules Docket at the

address above.

FOR FURTHER INFORMATION CONTACT: Mr.

Herman C. Belderok, Project Officer,

Gliders, Small Airplane Directorate,

Aircraft Certification Service, FAA,

1201 Walnut, suite 900, Kansas City,

Missouri 64106; telephone (816) 426–

6932; facsimile (816) 426–2169.

SUPPLEMENTARY INFORMATION:

Comments Invited

Interested persons are invited to

participate in the making of the

proposed rule by submitting such

written data, views, or arguments as

they may desire. Communications

should identify the Rules Docket

number and be submitted in triplicate to

the address specified above. All

communications received on or before

the closing date for comments, specified

above, will be considered before taking

action on the proposed rule. The

proposals contained in this notice may

be changed in light of the comments

received.

Comments are specifically invited on

the overall regulatory, economic,

environmental, and energy aspects of

the proposed rule. All comments

submitted will be available, both before

and after the closing date for comments,