Federal Register / Vol. 69, No. 207 / Wednesday, October 27, 2004 / Proposed Rules 62625

last-inspection or within 500 cycles-sincelast shop visit, or within 150 CIS after the 

effective date of this AD, whichever occurs 

later. Use paragraph 3.A.(3) of the 

Accomplishment Instructions of GE ASB No. 

CF6–50 S/B 72–A1251, dated September 24, 

2003 to do the inspections. 

(i) Replace any LPT module that has stage 

1 LPT blade damage exceeding aircraft 

maintenance manual limits. 

Optional Terminating Action 

(j) Engines incorporating GE SB No. CF6–

50 S/B 72–1239, Revision 1, dated September 

24, 2003, or incorporating paragraph 3.B. of 

GE SB No. CF6–50 S/B 72–1239, original 

issue, dated May 29, 2003, ends the repetitive 

inspection requirements in paragraph (h) of 

this AD. 

Alternative Methods of Compliance 

(k) The Manager, Engine Certification 

Office, has the authority to approve 

alternative methods of compliance for this 

AD if requested using the procedures found 

in 14 CFR 39.19. 

Related Information 

(l) None.

Issued in Burlington, Massachusetts, on 

October 21, 2004. 

Jay J. Pardee, 

Manager, Engine and Propeller Directorate, 

Aircraft Certification Service.

[FR Doc. 04–24035 Filed 10–26–04; 8:45 am] 

BILLING CODE 4910–13–P

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2004–19447; Directorate 

Identifier 2004–NM–97–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 all 

Saab Model SAAB SF340A and SAAB 

340B series airplanes. This proposed AD 

would require a one-time inspection to 

determine the part and serial numbers 

of certain molded assembly engine 

mounts (isolators) and the cure dates of 

certain bonded canister assemblies 

incorporated in those engine mounts; 

and related corrective actions if 

necessary. This proposed AD is 

prompted by a report that disbonding of 

the elastomer from the inner metal core 

and shim of certain molded assembly 

engine mounts has occurred within a 

few hundred hours of operation, causing 

heavy chafing of the engine support 

system and chafing of the fire sensor 

loop. We are proposing this AD to 

prevent reduced integrity of the fireshielding capacity of the nacelle 

structure and a possible fire detector 

fault.

DATES: We must receive comments on 

this proposed AD by November 26, 

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 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 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–

2004–19447; Directorate Identifier 

2004–NM–97–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

section. Comments will be available in 

the AD docket shortly after the DMS 

receives them. 

Discussion 

The Luftfartsverket (LFV), which is 

the airworthiness authority for Sweden, 

62626 Federal Register / Vol. 69, No. 207 / Wednesday, October 27, 2004 / Proposed Rules 

notified us that an unsafe condition may 

exist on all Saab Model SAAB SF340A 

and SAAB 340B series airplanes. The 

LFV advises that disbonding of the 

elastomer from the inner metal core and 

shim of the bonded canister assemblies 

incorporated in certain molded 

assembly engine mounts (isolators) has 

occurred within a few hundred hours of 

operation. This disbonding could 

reduce the redundancy and change the 

stiffness and damping characteristics of 

the engine support system, cause heavy 

chafing of the nacelle structure, and 

cause chafing of the fire sensor loop. 

This condition, if not corrected, could 

result in reduced integrity of the fireshielding capacity of the nacelle 

structure and a possible fire detector 

fault. 

Relevant Service Information 

Saab has issued Saab Service Bulletin 

340–71–059, dated May 16, 2003. The 

service bulletin describes procedures for 

a one-time inspection to determine the 

part and serial numbers of certain 

molded assembly engine mounts 

(isolators) and the cure dates of certain 

bonded canister assemblies 

incorporated in those engine mounts; an 

inspection for chafing of the nacelle 

structure of all airplanes and for chafing 

of the fire sensor loop of certain 

airplanes; and related corrective actions 

if necessary. Corrective actions include 

replacement of the engine mounts and 

repair or replacement of chafed nacelle 

structure and fire sensor loop 

components. Accomplishing the actions 

specified in the service information is 

intended to adequately address the 

unsafe condition. The LFV mandated 

the service information and issued 

Swedish airworthiness directive SAD 1–

192, dated May 16, 2003, to ensure the 

continued airworthiness of these 

airplanes in Sweden. 

Service Bulletin 340–71–059 refers to 

Barry Controls Service Letter 93948–71–

05, dated April 30, 2003, as an 

additional source of service information 

for determining the part numbers and 

serial numbers of certain molded 

assembly engine mounts, and the cure 

dates of the bonded canister assemblies 

incorporated in those engine mounts. 

FAA’s Determination and Requirements 

of the Proposed AD 

These airplane models are 

manufactured in Sweden 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 LFV has 

kept the FAA informed of the situation 

described above. We have examined the 

LFV’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 a one-time 

inspection to determine the part and 

serial numbers of certain molded 

assembly engine mounts (isolators) and 

the cure dates of the bonded canister 

assemblies incorporated in those engine 

mounts; a general visual inspection for 

chafing of certain elements adjacent to 

those engine mounts; and related 

corrective actions if necessary. The 

proposed AD would require you to use 

Saab Service Bulletin 340–71–059 

described previously to perform these 

actions, except as discussed under 

‘‘Clarification of Inspection 

Terminology.’’

Clarification of Inspection Terminology 

Saab Service Bulletin 340–71–059 

specifies an inspection for chafing of 

certain elements adjacent to certain 

molded assembly engine mounts. To 

eliminate any confusion about this 

inspection, this proposed AD would 

require a general visual inspection of 

those elements. Note 2 of this proposed 

AD includes a definition of this type of 

inspection. 

Costs of Compliance 

This proposed AD would affect about 

170 airplanes of U.S. registry. The 

proposed actions would take about 2 

work hours per airplane, at an average 

labor rate of $65 per work hour. Based 

on these figures, the estimated cost of 

this proposed AD for U.S. operators is 

$22,100 or $130 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):

SAAB Aircraft AB: Docket No. FAA–2004–

19447; Directorate Identifier 2004–NM–

97-AD. 

Comments Due Date 

(a) The Federal Aviation Administration 

must receive comments on this AD action by 

November 26, 2004. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to all Model SAAB 

SF340A and SAAB 340B series airplanes, 

certificated in any category. 

Unsafe Condition 

(d) This AD was prompted by a report that 

disbonding of the elastomer from the inner 

metal core and shim of certain molded 

assembly engine mounts (isolators) has 

occurred within a few hundred hours of 

operation, causing heavy chafing of the 

engine support system and chafing of the fire 

sensor loop. We are issuing this AD to 

prevent reduced integrity of the fire-shielding 

capacity of the engine nacelle structure and 

a possible fire detector fault. 

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 

(f) Within 500 flight hours after the 

effective date of this AD, perform a one-time 

inspection to determine the part and serial 

numbers of certain molded assembly engine 

mounts (isolators) and the cure dates of 

certain bonded canister assemblies 

incorporated in those engine mounts; and a 

general visual inspection for chafing of the 

Federal Register / Vol. 69, No. 207 / Wednesday, October 27, 2004 / Proposed Rules 62627

nacelle structure and fire sensor loop; and 

related corrective actions, as applicable; in 

accordance with the Accomplishment 

Instructions of Saab Service Bulletin 340–71–

059, dated May 16, 2003. Corrective actions 

must be accomplished prior to further flight.

Note 1: Saab Service Bulletin 340–71–059 

refers to Barry Controls Service Letter 93948–

71–05, dated April 30, 2003, as an additional 

source of service information.

Note 2: For the purposes of this AD, a 

general visual inspection is ‘‘a visual 

examination of a interior or exterior area, 

installation or assembly to detect obvious 

damage, failure or irregularity. This level of 

inspection is made from within touching 

distance unless otherwise specified. A mirror 

may be necessary to ensure visual access to 

all surfaces in the inspection area. This level 

of inspection is made under normal available 

lighting conditions such as daylight, hangar 

lighting, flashlight or droplight and may 

require removal or opening of access panels 

or doors. Stands, ladders or platforms may be 

required to gain proximity to the area being 

checked.’’

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) Swedish airworthiness directive SAD 

1–192, dated May 16, 2003, also addresses 

the subject of this AD.

Issued in Renton, Washington, on October 

18, 2004. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service.

[FR Doc. 04–24034 Filed 10–26–04; 8:45 am] 

BILLING CODE 4910–13–P

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2004–19451; Directorate 

Identifier 2002–NM–138–AD] 

RIN 2120–AA64 

Airworthiness Directives; Airbus Model 

A300 B2 and B4; A300 B4–600, B4–

600R, and F4–600R (Collectively Called 

A300–600); and A310 Series Airplanes

AGENCY: Federal Aviation 

Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to 

supersede an existing airworthiness 

directive (AD) that applies to all Airbus 

Model A300 B2 and B4; A300 B4–600, 

B4–600R, and F4–600R (collectively 

called A300–600); and A310 series 

airplanes. The existing AD currently 

requires identification of the part 

number and serial number of the 

parking brake operated valve (PBOV); 

and, if necessary, inspections of the 

PBOV, including a functional check of 

the PBOV, and follow-on and corrective 

actions. The existing AD also provides 

for optional terminating action for the 

requirements of that AD. This proposed 

AD would require modification of all 

affected PBOVs, or replacement with 

new, nonaffected PBOVs, which would 

terminate the requirements of the 

existing AD. This proposed AD is 

prompted by a decision by the FAA and 

a civil airworthiness authority to require 

modification or replacement of all 

affected PBOVs. We are proposing this 

AD to prevent loss of the yellow 

hydraulic system, which provides all 

the hydraulics for certain spoilers; 

elements of the hydraulics for flaps, 

stabilizer, pitch and yaw feel systems, 

pitch and yaw autopilot, and yaw 

damper; and elevator, rudder, and 

aileron.

DATES: We must receive comments on 

this proposed AD by November 26, 

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. 

• 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 Airbus, 1 

Rond Point Maurice Bellonte, 31707 

Blagnac Cedex, France. 

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: 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–

2004–19451; Directorate Identifier 

2002–NM–138–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 received 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