This section of the FEDERAL REGISTER

contains notices to the public of the proposed

issuance of rules and regulations. The

purpose of these notices is to give interested

persons an opportunity to participate in the

rule making prior to the adoption of the final

rules.

Proposed Rules Federal Register

59147

Vol. 69, No. 191

Monday, October 4, 2004

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39

[Docket No. FAA–2004–19138; Directorate 

Identifier 2004–NM–102–AD] 

RIN 2120–AA64

Airworthiness Directives; Gulfstream 

Aerospace LP Model Gulfstream 100 

Airplanes; and Model Astra SPX and 

1125 Westwind Astra Series Airplanes

AGENCY: Federal Aviation 

Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain Gulfstream Aerospace LP Model 

Gulfstream 100 airplanes; and Model 

Astra SPX and 1125 Westwind Astra 

series airplanes. This proposed AD 

would require adjusting the ground 

contact switches of the main landing 

gear. This proposed AD is prompted by 

two occurrences of uncommanded 

deployments of the ground airbrakes 

during descent. We are proposing this 

AD to prevent a false ‘‘Ground’’ position 

signal, which could result in 

deployment of the ground airbrakes and 

reduced controllability of the airplane.

DATES: We must receive comments on 

this proposed AD by November 3, 2004.

ADDRESSES: Use one of the following 

addresses to submit comments on this 

proposed AD. 

• DOT Docket Web site: Go to

http://dms.dot.gov and follow the 

instructions for sending your comments 

electronically. 

• Government-wide rulemaking Web 

site: Go to http://www.regulations.gov

and follow the instructions for sending 

your comments electronically. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 400 

Seventh Street SW., Nassif Building, 

room PL–401, Washington, DC 20590. 

• By fax: (202) 493–2251. 

• Hand Delivery: Room PL–401 on 

the plaza level of the Nassif Building, 

400 Seventh Street SW., Washington, 

DC, between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

For service information identified in 

this proposed AD, contact Gulfstream 

Aerospace Corporation, P.O. Box 2206, 

Mail Station D–25, Savannah, Georgia 

31402. 

You can examine the contents of this 

AD docket on the Internet at http://

dms.dot.gov, or at the Docket 

Management Facility, U.S. Department 

of Transportation, 400 Seventh Street 

SW., room PL–401, on the plaza level of 

the Nassif Building, Washington, DC.

FOR FURTHER INFORMATION CONTACT: 

Technical information: Dan Rodina, 

Aerospace Engineer, International 

Branch, ANM–116, FAA, Transport 

Airplane Directorate, 1601 Lind 

Avenue, SW., Renton, Washington 

98055–4056; telephone (425) 227–2125; 

fax (425) 227–1149. 

Plain language information: Marcia 

Walters, marcia.walters@faa.gov.

SUPPLEMENTARY INFORMATION: 

Docket Management System (DMS) 

The FAA has implemented new 

procedures for maintaining AD dockets 

electronically. As of May 17, 2004, new 

AD actions are posted on DMS and 

assigned a docket number. We track 

each action and assign a corresponding 

directorate identifier. The DMS AD 

docket number is in the form ‘‘Docket 

No. FAA–2004–99999.’’ The Transport 

Airplane Directorate identifier is in the 

form ‘‘Directorate Identifier 2004–NM–

999–AD.’’ Each DMS AD docket also 

lists the directorate identifier (‘‘Old 

Docket Number’’) as a cross-reference 

for searching purposes. 

Comments Invited 

We invite you to submit any relevant 

written data, views, or arguments 

regarding this proposed AD. Send your 

comments to an address listed under 

ADDRESSES. Include ‘‘Docket No. FAA–

2004–19138; Directorate Identifier 

2004–NM–102–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of the proposed AD. We will 

consider all comments submitted by the 

closing date and may amend the 

proposed AD in light of those 

comments. 

We will post all comments we 

receive, without change, to http://

dms.dot.gov, including any personal 

information you provide. We will also 

post a report summarizing each 

substantive verbal contact with FAA 

personnel concerning this proposed AD. 

Using the search function of our docket 

website, anyone can find and read the 

comments in any of our dockets, 

including the name of the individual 

who sent the comment (or signed the 

comment on behalf of an association, 

business, labor union, etc.). You can 

review the DOT’s complete Privacy Act 

Statement in the Federal Register

published on April 11, 2000 (65 FR 

19477–78), or you can visit http://

dms.dot.gov. 

We are reviewing the writing style we 

currently use in regulatory documents. 

We are interested in your comments on 

whether the style of this document is 

clear, and your suggestions to improve 

the clarity of our communications that 

affect you. You can get more 

information about plain language at 

http://www.faa.gov/language and http://

www.plainlanguage.gov. 

Examining the Docket 

You can examine the AD docket on 

the Internet at http://dms.dot.gov, or in 

person at the Docket Management 

Facility office between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. The Docket 

Management Facility office (telephone 

(800) 647–5227) is located on the plaza 

level of the Nassif Building at the DOT 

street address stated in the ADDRESSES

section. Comments will be available in 

the AD docket shortly after the DMS 

receives them. 

Discussion 

The Civil Aviation Administration of 

Israel (CAAI), which is the 

airworthiness authority for Israel, 

notified us that an unsafe condition may 

exist on certain Gulfstream Aerospace 

LP Model Gulfstream 100 airplanes; and 

Model Astra SPX and 1125 Westwind 

Astra series airplanes. The CAAI advises 

that increasing the adjustment margin of 

the ground contact switches of the main 

landing gear (MLG) could prevent a 

false ‘‘Ground’’ position signal. This 

condition, if not corrected, could result 

in deployment of the ground airbrakes 

and reduced controllability of the 

airplane. 

59148 Federal Register / Vol. 69, No. 191 / Monday, October 4, 2004 / Proposed Rules 

Relevant Service Information 

Gulfstream Aerospace LP has issued 

Alert Service Bulletin 1125–32A–233, 

Revision 1, dated August 1, 2003. The 

service bulletin describes procedures for 

adjusting the ground contact switches of 

the MLG. Accomplishing the actions 

specified in the service information is 

intended to adequately address the 

unsafe condition. The CAAI mandated 

the service information and issued 

Israeli airworthiness directive 32–03–

08–05, dated September 4, 2003, to 

ensure the continued airworthiness of 

these airplanes in Israel.

FAA’s Determination and Requirements 

of the Proposed AD 

These airplane models are 

manufactured in Israel and are 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 CAAI has 

kept the FAA informed of the situation 

described above. We have examined the 

CAAI’s findings, evaluated all pertinent 

information, and determined that AD 

action is necessary for products of this 

type design that are certificated for 

operation in the United States. 

Therefore, we are proposing this AD, 

which would require adjusting the 

ground contact switches of the MLG. 

The proposed AD would require you to 

use the service information described 

previously to perform these actions, 

except as discussed under ‘‘Difference 

Between the Proposed AD and Service 

Bulletin.’’

Difference Between the Proposed AD 

and the Service Bulletin 

Operators should note that, although 

the Accomplishment Instructions of the 

referenced service bulletin describe 

procedures for submitting a service 

reply card, this proposed AD would not 

require that action. We do not need this 

information from operators. 

Costs of Compliance 

This proposed AD would affect about 

106 airplanes of U.S. registry. The 

proposed actions would take about 3 

work hours per airplane, at an average 

labor rate of $65 per work hour. Based 

on these figures, the estimated cost of 

the proposed AD for U.S. operators is 

$20,670, or $195 per airplane. 

Regulatory Findings 

We have determined that this 

proposed AD would not have federalism 

implications under Executive Order 

13132. This proposed AD would not 

have a substantial direct effect 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. 

For the reasons discussed above, I 

certify that the proposed regulation: 

1. Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866; 

2. Is not a ‘‘significant rule’’ under the 

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. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this proposed AD. See the ADDRESSES

section for a location to examine the 

regulatory evaluation.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation 

safety, Safety.

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 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. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive (AD):

Gulfstream Aerospace LP (Formerly Israel 

Aircraft Industries, Ltd.): Docket No. 

FAA–2004–19138; Directorate Identifier 

2004–NM–102–AD. 

Comments Due Date 

(a) The Federal Aviation Administration 

must receive comments on this AD action by 

November 3, 2004. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Gulfstream 

Aerospace LP Model Gulfstream 100 

airplanes; and Model Astra SPX and 1125 

Westwind Astra series airplanes; serial 

numbers 004 through 127 inclusive; 

certificated in any category. 

Unsafe Condition 

(d) This AD was prompted by two 

occurrences of uncommanded deployments 

of the ground airbrakes during descent. We 

are issuing this AD to prevent a false 

‘‘Ground’’ position signal, which could result 

in deployment of the ground airbrakes and 

reduced controllability of the airplane. 

Compliance 

(e) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Corrective Action 

(f) Within 250 flight hours after the 

effective date of this AD, adjust the ground 

contact switches of the left and right main 

landing gear, in accordance with the 

Accomplishment Instructions of Gulfstream 

Alert Service Bulletin 1125–32A–233, 

Revision 1, dated August 1, 2003. Although 

the service bulletin referenced in this AD 

specifies to submit certain information to the 

manufacturer, this AD does not include that 

requirement. 

Alternative Methods of Compliance 

(AMOCs) 

(g) The Manager, International Branch, 

ANM–116, Transport Airplane Directorate, 

FAA, has the authority to approve AMOCs 

for this AD, if requested in accordance with 

the procedures found in 14 CFR 39.19. 

Related Information 

(h) Israeli airworthiness directive 32–03–

08–05, dated September 4, 2003, also 

addresses the subject of this AD.

Issued in Renton, Washington, on 

September 15, 2004. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service.

[FR Doc. 04–22193 Filed 10–1–04; 8:45 am] 

BILLING CODE 4910–13–P

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2004–19157; Directorate 

Identifier 2004–NE–30–AD] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Deutschland (RRD) (Formerly RollsRoyce plc) Tay 650–15 Series Turbofan 

Engines

AGENCY: Federal Aviation 

Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain RRD Tay 650–15 series turbofan 

engines. This proposed AD would 

require inspection of the high pressure 

compressor (HPC) shaft and high 

pressure turbine (HPT) shaft for spline 

flank wear. This proposed AD results 

from a number of occurrences of 

excessive HPC shaft and HPT shaft