61918 Federal Register / Vol. 70, No. 207 / Thursday, October 27, 2005 / Proposed Rules 

subassembly has been identified, the number 

of landings has been determined, and the 

number of landings does not exceed the 

limits specified in this AD, as applicable.) Do 

the actions specified in this paragraph at the 

applicable time specified in paragraph (h)(1) 

or (h)(2) of this AD, or within 500 landings 

after the effective date of this AD, whichever 

is later. A review of airplane maintenance 

records is acceptable in lieu of this 

inspection if the total accumulated landings 

on the subassembly (since the subassembly 

was new or overhauled) can be conclusively 

determined from that review. 

(1) If the NLG has not been overhauled 

previously: Prior to the accumulation of 

35,000 total landings on the NLG. 

(2) If the NLG has been overhauled 

previously: Within 8,000 landings since the 

most recent overhaul. 

Parts Installation 

(i) After the effective date of this AD, no 

person may install an NLG that is equipped 

with a main fitting subassembly having a part 

number listed in paragraph 1.A.(2) of the 

service bulletin, unless all of the applicable 

actions in paragraphs (g) and (h) of this AD 

have been done. 

Alternative Methods of Compliance 

(AMOCs) 

(j)(1) 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. 

(2) Before using any AMOC approved in 

accordance with 14 CFR 39.19 on any 

airplane to which the AMOC applies, notify 

the appropriate principal inspector in the 

FAA Flight Standards Certificate Holding 

District Office. 

Related Information 

(k) British airworthiness directive G–2005–

0001, dated January 12, 2005, also addresses 

the subject of this AD. 

Issued in Renton, Washington, on October 

18, 2005. 

Kevin M. Mullin, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 05–21437 Filed 10–26–05; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2005–22792; Directorate 

Identifier 2005–NM–084–AD] 

RIN 2120–AA64 

Airworthiness Directives; BAE 

Systems (Operations) Limited Model 

Avro 146–RJ Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for all 

BAE Systems (Operations) Limited 

Model Avro 146–RJ airplanes. This 

proposed AD would require reviewing 

the airplane’s maintenance records to 

determine if certain tasks of the Bae146/ 

Avro RJ Maintenance Planning 

Document have been accomplished. 

This proposed AD would also require 

doing repetitive detailed inspections of 

the external fuselage skin adjacent to the 

longeron at rib 0 from frame 29 to frame 

31 and repairing any damage if 

necessary. This proposed AD results 

from issuance of mandatory continuing 

airworthiness information by a foreign 

civil airworthiness authority. We are 

proposing this AD to detect and correct 

cracking of the fuselage skin, which 

could result in structural failure of the 

fuselage. 

DATES: We must receive comments on 

this proposed AD by November 28, 

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. 

• 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. 

Contact British Aerospace Regional 

Aircraft American Support, 13850 

Mclearen Road, Herndon, Virginia 

20171, for service information identified 

in this proposed AD. 

FOR FURTHER INFORMATION CONTACT: 

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. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to submit any relevant 

written data, views, or arguments 

regarding this proposed AD. Include the 

docket number ‘‘FAA–2005–22792; 

Directorate Identifier 2005–NM–084–

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 that 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 may 

review the DOT’s complete Privacy Act 

Statement in the Federal Register 

published on April 11, 2000 (65 FR 

19477–78), or you may visit http:// 

dms.dot.gov. 

Examining the Docket 

You may 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 Docket 

Management System 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 Model 

Avro 146–RJ airplanes. The CAA 

advises that, to ensure continued 

structural integrity of the fuselage skin, 

it has reduced the initial threshold for 

inspecting the fuselage skin adjacent to 

the longeron at rib 0 between frames 29 

and 31 for cracking. Cracking of the 

fuselage skin, if not detected and 

corrected, could result in structural 

failure of the fuselage. 

Relevant Service Information 

BAE Systems (Operations) Limited 

has issued Inspection Service Bulletin 

ISB.53–177, dated June 29, 2004. The 

ISB describes procedures for doing 

repetitive detailed inspections of the 

external fuselage skin adjacent to the 

longeron at rib 0 from frame 29 to frame 

Federal Register / Vol. 70, No. 207 / Thursday, October 27, 2005 / Proposed Rules 61919 

31; repairing any damage if found; and 

contacting the manufacturer if damage 

is beyond the repair 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 G–2005–0009, 

dated March 9, 2005, to ensure the 

continued airworthiness of these 

airplanes in the United Kingdom. 

The ISB refers to the following service 

information as additional sources of 

service information: 

• Supplemental Structural Inspection 

53–20–138 of the Maintenance Review 

Board Report, Revision 10, dated May 

2004, for inspecting the external 

fuselage skin. 

• BAE Systems (Operations) Limited 

Structural Repair Manual (SRM) for 

repairing certain damage. 

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 airplanes 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 ‘‘Difference 

Between the Proposed AD and Service 

Bulletin.’’

Difference Between the Proposed AD 

and Service Bulletin 

The service bulletin specifies to 

contact the manufacturer for 

instructions on how to repair certain 

conditions, but this proposed AD would 

require repairing 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. 

Clarification of Inspection Terminology 

The ‘‘detailed visual inspection’’

specified in British airworthiness 

directive G–2005–0009, dated March 9, 

2005, and BAE Systems (Operations) 

Limited Inspection Service Bulletin 

ISB.53–177, dated June 29, 2004, is 

referred to as a ‘‘detailed inspection’’ in 

this proposed AD. We have included the 

definition for a detailed inspection in a 

note in the proposed AD. 

Costs of Compliance 

The following table provides the 

estimated costs for U.S. operators to 

comply with this proposed AD. 

ESTIMATED COSTS

Action Work hours 

Average 

labor rate 

per hour 

Parts Cost per 

airplane 

Number of 

U.S.-registered 

airplanes 

Fleet cost 

Records examination ................................................. 1 $65 None ........ $65 36 $2,340. 

Repetitive detailed inspection .................................... 4 65 None ........ 260 36 $9,360, per inspection cycle. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII, 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in subtitle VII, 

part A, subpart III, section 44701, 

‘‘General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

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 and placed it in the 

AD docket. 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 Federal Aviation 

Administration (FAA) amends § 39.13 

by adding the following new 

airworthiness directive (AD): 

BAE Systems (Operations) Limited 

(Formerly British Aerospace Regional 

Aircraft): Docket No. FAA–2005–22792; 

Directorate Identifier 2005–NM–084–AD. 

61920 Federal Register / Vol. 70, No. 207 / Thursday, October 27, 2005 / Proposed Rules 

Comments Due Date 

(a) The FAA must receive comments on 

this AD action by November 28, 2005. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to all BAE Systems 

(Operations) Limited Model Avro 146–

RJ70A, 146–RJ85A, and 146–RJ100A 

airplanes, certificated in any category. 

Unsafe Condition 

(d) This AD results from issuance of 

mandatory continuing airworthiness 

information by a foreign civil airworthiness 

authority. We are issuing this AD to detect 

and correct cracking of the fuselage skin, 

which could result in structural failure 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. 

Maintenance Records Check 

(f) Within 30 days after the effective date 

of this AD, review the airplane’s maintenance 

records to determine if Tasks 532038–DVI–

10000–1 and –2 of the Bae146/Avro RJ 

Maintenance Planning Document have been 

accomplished before the effective date of this 

AD. If review of the airplane’s maintenance 

records cannot conclusively determine that 

Tasks 532038–DVI–10000–1 and –2 have 

been accomplished, do the detailed 

inspection specified in paragraph (g) of this 

AD at the applicable compliance time 

specified in paragraph (g)(1) or (g)(2) of this 

AD. If review of the airplane’s maintenance 

records can conclusively determine that 

Tasks 532038–DVI–10000–1 and –2 have 

been accomplished, do the detailed 

inspection specified in paragraph (g) of this 

AD at the compliance time specified in 

paragraph (g)(3) of this AD. 

Detailed Inspection and Corrective Action 

(g) At the applicable compliance time 

specified in paragraph (g)(1), (g)(2), or (g)(3) 

of this AD, do a detailed inspection of the 

external fuselage skin adjacent to the 

longeron at rib 0 from frame 29 to frame 31, 

in accordance with the Accomplishment 

Instructions of BAE Systems (Operations) 

Limited Inspection Service Bulletin ISB.53–

177, dated June 29, 2004. If any damage is 

found during any inspection required by this 

AD, before further flight, repair in accordance 

with the service bulletin; except where the 

service bulletin specifies to repair with an 

approved BAE Systems repair scheme, before 

further flight, repair the damage 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). 

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 mirror, magnifying 

lenses, etc., may be necessary. Surface 

cleaning and elaborate procedures may be 

required.’’

Note 2: BAE Systems (Operations) Limited 

Inspection Service Bulletin ISB.53–177, 

dated June 29, 2004, refers to Supplemental 

Structural Inspection 53–20–138 of the 

Maintenance Review Board Report, Revision 

10, dated May 2004, as an additional source 

of service information for inspecting the 

external fuselage skin. The service bulletin 

also refers to BAE Systems (Operations) 

Limited Structural Repair Manual (SRM) as 

an additional source of service information 

for repairing certain damage. 

(1) For airplanes on which Tasks 532038–

DVI–10000–1 and –2 of the Bae146/Avro RJ 

Maintenance Planning Document have not 

been accomplished but that have 

accumulated 22,000 total flight cycles or less 

as of the effective date of this AD: Inspect 

before accumulating 22,000 total flight cycles 

or within 6 months after the effective date of 

this AD, whichever is later. Thereafter repeat 

the detailed inspection at intervals not to 

exceed 12,000 flight cycles. 

(2) For airplanes on which Tasks 532038–

DVI–10000–1 and –2 of the Bae146/Avro RJ 

Maintenance Planning Document have not 

been accomplished but that have 

accumulated more than 22,000 total flight 

cycles as of the effective date of this AD: 

Inspect before accumulating 24,000 total 

flight cycles or within 6 months after the 

effective date of this AD, whichever is first. 

Thereafter repeat the detailed inspection at 

intervals not to exceed 12,000 flight cycles. 

(3) For airplanes on which Tasks 532038–

DVI–10000–1 and –2 of the Bae146/Avro RJ 

Maintenance Planning Document have been 

accomplished before the effective date of this 

AD: Inspect within 12,000 flight cycles after 

the most recent inspection. Thereafter repeat 

the detailed inspection at intervals not to 

exceed 12,000 flight cycles. 

No Reporting Requirement 

(h) 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) 

(i)(1) 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. 

(2) Before using any AMOC approved in 

accordance with 14 CFR 39.19 on any 

airplane to which the AMOC applies, notify 

the appropriate principal inspector in the 

FAA Flight Standards Certificate Holding 

District Office. 

Related Information 

(j) British airworthiness directive G–2005–

0009, dated March 9, 2005, also addresses the 

subject of this AD. 

Issued in Renton, Washington, on October 

18, 2005. 

Kevin M. Mullin, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 05–21436 Filed 10–26–05; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2005–22793; Directorate 

Identifier 2005–NM–161–AD] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier 

Model CL–600–2B19 (Regional Jet 

Series 100 & 440) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain Bombardier Model CL–600–

2B19 (Regional Jet Series 100 & 440) 

airplanes. This proposed AD would 

require replacing the Gask-O-Seal in the 

coupling of the refuel/defuel shut-off 

valves. This proposed AD results from 

a report that Gask-O-Seals that did not 

incorporate an integral restrictor to limit 

fuel flow rate and fuel pressure during 

refueling were installed on certain 

airplanes. We are proposing this AD to 

prevent a buildup of excessive static 

charge, which could create an ignition 

source inside the fuel tank. 

DATES: We must receive comments on 

this proposed AD by November 28, 

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. 

• 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.