69834 Federal Register / Vol. 69, No. 230 / Wednesday, December 1, 2004 / Proposed Rules 

(i) For airplanes that have not been 

exposed to potassium formate or potassium 

acetate: Repeat the requirements in paragraph 

(f) of this AD thereafter at intervals not to 

exceed 12 months. 

(ii) For airplanes that have been exposed to 

potassium formate or potassium acetate: 

Before further flight, do the inspection 

required by paragraph (f)(2) of this AD. 

(2) Do a detailed inspection of the 

electrical connectors, including the contacts 

and backshells, of the line replaceable unit 

(LRU) in the wheel well of the MLG for 

corrosion by doing all the actions in 

accordance with the Accomplishment 

Instructions of Boeing Alert Service Bulletin 

737–24A1148, Revision 1, dated July 10, 

2003. Do any significant/corrective actions 

before further flight in accordance with the 

service bulletin. Repeat the actions required 

by paragraph (f)(1) of this AD thereafter at 

intervals not to exceed 12 months.

Note 1: For the purposes of this AD, a 

detailed inspection is defined as: ‘‘An 

intensive visual examination of a specific 

structural area, system, installation, or 

assembly to detect damage, failure, or 

irregularity. Available lighting is normally 

supplemented with a direct source of good 

lighting at intensity deemed appropriate by 

the inspector. Inspection aids such as mirror, 

magnifying lenses, etc., may be used. Surface 

cleaning and elaborate access procedures 

may be required.’’

Alternative Methods of Compliance 

(AMOCs) 

(g)(1) The Manager, Seattle Aircraft 

Certification Office (ACO), FAA, has the 

authority to approve AMOCs for this AD, if 

requested in accordance with the procedures 

found in 14 CFR 39.19. 

(2) AMOCs approved previously in 

accordance with AD 2002–16–03, 

amendment 39–12842, are not approved as 

AMOCs with this AD.

Issued in Renton, Washington, on 

November 17, 2004. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service.

[FR Doc. 04–26497 Filed 11–30–04; 8:45 am] 

BILLING CODE 4910–13–P

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2004–19751; Directorate 

Identifier 2002–NM–59–AD] 

RIN 2120–AA64 

Airworthiness Directives; BAE 

Systems (Operations) Limited 

(Jetstream) Model 4101 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 all 

BAE Systems (Operations) Limited 

(Jetstream) Model 4101 airplanes. This 

proposed AD would require repetitive 

detailed inspections of the aft fuselage 

frames for any discrepancies, and any 

applicable corrective actions. This 

proposed AD is prompted by reports of 

corrosion found on the aft fuselage 

frames due to the ingress of water or 

liquid. We are proposing this AD to 

detect and correct corrosion of the aft 

fuselage frames, which could result in 

reduced structural integrity of the 

fuselage.

DATES: We must receive comments on 

this proposed AD by January 3, 2005.

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 British 

Aerospace Regional Aircraft American 

Support, 13850 Mclearen Road, 

Herndon, Virginia 20171. 

You can examine the contents of this 

AD docket on the Internet at http://

dms.dot.gov, or in person 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: Todd 

Thompson, Aerospace Engineer, 

International Branch, ANM–116, FAA, 

Transport Airplane Directorate, 1601 

Lind Avenue, SW., Renton, Washington 

98055–4056; telephone (425) 227–1175; 

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–

2004–19751; Directorate Identifier 

2002–NM–59–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 

Web site, 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

Federal Register / Vol. 69, No. 230 / Wednesday, December 1, 2004 / Proposed Rules 69835

section. Comments will be available in 

the AD docket shortly after the DMS 

receives them. 

Discussion 

The Civil Aviation Authority (CAA), 

which is the airworthiness authority for 

the United Kingdom, notified us that an 

unsafe condition may exist on all BAE 

Systems (Operations) Limited 

(Jetstream) Model 4101 airplanes. The 

CAA advises that corrosion has been 

found along aft fuselage frames. This 

corrosion occurs on frame areas below 

floor panel level in the vicinity of the 

toilet, galley, and rear baggage door due 

to the ingress of water or liquid. 

Corrosion of the aft fuselage frames, if 

not detected and corrected in a timely 

manner, could result in reduced 

structural integrity of the fuselage. 

Relevant Service Information 

BAE Systems (Operations) Limited 

has issued Service Bulletin J41–53–051, 

dated January 25, 2002; and Revision 1, 

dated May 2, 2003. The service bulletins 

describe procedures for doing repetitive 

detailed visual inspections of the aft 

fuselage frames for discrepancies (i.e., 

corrosion, soft spots, and suspected 

corrosion), doing any applicable 

corrective action, and submitting 

inspection reports to the manufacturer. 

The corrective actions include repairing 

any corrosion found during the 

inspections; replacing any soft floor 

panels; reapplying any sealant, 

membrane, or tape removed during the 

inspection; and contacting the 

manufacturer for disposition of damage 

outside of limits. 

Accomplishing the actions specified 

in the service information is intended to 

adequately address the unsafe 

condition. The CAA mandated the 

service information and issued British 

airworthiness directive 003–01–2002 to 

ensure the continued airworthiness of 

these airplanes in the United Kingdom. 

FAA’s Determination and Requirements 

of the Proposed AD 

This airplane model is manufactured 

in the United Kingdom 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 CAA has 

kept the FAA informed of the situation 

described above. We have examined the 

CAA’s findings, evaluated all pertinent 

information, and determined that we 

need to issue an AD for products of this 

type design that are certificated for 

operation in the United States. 

Therefore, we are proposing this AD, 

which would require accomplishing the 

actions specified in the service 

information described previously, 

except as discussed under ‘‘Differences 

Between the AD and the Service 

Bulletins.’’

Differences Between the Proposed AD 

and the Service Bulletins 

The service bulletins specify that you 

may contact the manufacturer for 

instructions on how to repair corrosion 

outside limits defined in the service 

bulletins, but this proposed AD would 

require you to repair those conditions 

using a method that we or the CAA (or 

its delegated agent) approve. In light of 

the type of repair that would be required 

to address the unsafe condition, and 

consistent with existing bilateral 

airworthiness agreements, we have 

determined that, for this proposed AD, 

a repair we or the CAA approve would 

be acceptable for compliance with this 

proposed AD. 

Operators should also note that, 

although the Accomplishment 

Instructions of the service bulletins 

describe procedures for submitting 

inspection reports, this proposed AD 

would not require those actions. We do 

not need this information from 

operators.

Costs of Compliance 

This proposed AD would affect about 

57 airplanes of U.S. registry. The 

proposed inspections would take about 

30 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 $111,150, or $1,950 per 

airplane, per inspection cycle. 

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):

BAE Systems (Operations) Limited 

(Formerly British Aerospace Regional 

Aircraft): Docket No. FAA–2004–19751; 

Directorate Identifier 2002–NM–59–AD. 

Comments Due Date 

(a) The Federal Aviation Administration 

must receive comments on this AD action by 

January 3, 2005. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to all BAE Systems 

(Operations) Limited (Jetstream) Model 4101 

airplanes, certificated in any category. 

Unsafe Condition 

(d) This AD was prompted by reports of 

corrosion found on the aft fuselage frames 

due to the ingress of water or liquid. We are 

issuing this AD to detect and correct 

corrosion of the aft fuselage frames, which 

could result in reduced structural integrity of 

the fuselage. 

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. 

Inspection and Corrective Actions 

(f) Within 12 months after the effective 

date of this AD, do a detailed inspection of 

the aft fuselage frames for any discrepancies 

(i.e., corrosion, soft spots, and suspected 

corrosion), and any applicable corrective 

actions, in accordance with the 

Accomplishment Instructions of BAE 

Systems (Operations) Limited Service 

Bulletin J41–53–051, dated January 25, 2002; 

or Revision 1, dated May 2, 2003; except as 

provided by paragraphs (g) and (i) of this AD. 

Do any applicable corrective action before 

further flight.

69836 Federal Register / Vol. 69, No. 230 / Wednesday, December 1, 2004 / Proposed Rules 

Note 1: For the purposes of this AD, a 

detailed inspection is ‘‘an intensive 

examination of a specific item, installation, 

or assembly to detect damage, failure, or 

irregularity. Available lighting is normally 

supplemented with a direct source of good 

lighting at an intensity deemed appropriate. 

Inspection aids such as mirrors magnifying 

lenses, etc. may be necessary. Surface 

cleaning and elaborate procedures may be 

required.’’

(g) If any corrosion outside the limits 

defined in the service bulletin is detected: 

Before further flight, repair the corrosion 

according to a method approved by either the 

Manager, International Branch, ANM–116, 

FAA, Transport Airplane Directorate; or the 

Civil Aviation Authority (or its delegated 

agent). 

Repetitive Inspection 

(h) Repeat the inspection and do applicable 

corrective actions required by paragraph (f) of 

this AD at intervals not to exceed 24 months. 

No Reporting 

(i) Although the service bulletins 

referenced in this AD specify to submit 

inspection reports to the manufacturer, this 

AD does not include that requirement. 

Alternative Methods of Compliance 

(AMOCs) 

(j) The Manager, International Branch, 

ANM–116, FAA, 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 

(k) British airworthiness directive 003–01–

2002 also addresses the subject of this AD.

Issued in Renton, Washington, on 

November 17, 2004. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service.

[FR Doc. 04–26496 Filed 11–30–04; 8:45 am] 

BILLING CODE 4910–13–P

DEPARTMENT OF TRANSPORTATION 

(DOT) 

Federal Aviation Administration 

14 CFR Part 39

[Docket No. FAA–2004–19752; Directorate 

Identifier 2004–NM–170–AD] 

RIN 2120–AA64

Airworthiness Directives; Saab Model 

SAAB SF340A and SAAB 340B 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 Saab Model SAAB SF340A and 

SAAB 340B series airplanes. This 

proposed AD would require repetitive 

inspections for wear of the brushes and 

leads and for loose rivets of the direct 

current (DC) starter generator, and 

related investigative/corrective actions 

if necessary. This proposed AD is 

prompted by reports of premature 

failures of the DC starter generator prior 

to scheduled overhaul. We are 

proposing this AD to prevent failure of 

the starter generator, which could cause 

a low voltage situation in flight and 

result in increased pilot workload and 

reduced redundancy of the electrical 

powered systems.

DATES: We must receive comments on 

this proposed AD by January 3, 2005.

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 Saab Aircraft 

AB, SAAB Aircraft Product Support, S–

581.88, Linko ̈ping, Sweden. 

You can examine the contents of this 

AD docket on the Internet at http://

dms.dot.gov, or in person at the Docket 

Management Facility, U.S. Department 

of Transportation, 400 Seventh SW., 

room PL–401, on the plaza level of the 

Nassif Building, Washington, DC. This 

docket number is FAA–2004–19752; the 

directorate identifier for this docket is 

2004–NM–170–AD.

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–

2004–19752; Directorate Identifier 

2004–NM–170–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 

Web site, 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