73902 Federal Register / Vol. 77, No. 239 / Wednesday, December 12, 2012 / Rules and Regulations 

with a windshield that uses screws and lugs 

for electrical heat connection, in accordance 

with the Accomplishment Instructions of 

Boeing Special Attention Service Bulletin 

757–30–0019, Revision 3, dated December 

16, 2011 (for Model 757–200, –200PF, and 

–200CB series airplanes); or Boeing Special 

Attention Service Bulletin 757–30–0020, 

Revision 3, dated December 16, 2011 (for 

Model 757–300 series airplanes): Do the 

actions required by paragraph (g) of this AD 

within 500 flight hours after the windshield 

replacement; and thereafter at the applicable 

interval specified in paragraph (g)(1) or (g)(2) 

of this AD. 

(2) For airplanes on which any windshield 

heat power connection is re-assembled after 

the effective date of this AD on windshields 

that use screws and lugs for windshield heat 

connections, in accordance with the 

Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 757–30– 

0019, Revision 3, dated December 16, 2011 

(for Model 757–200, –200PF, and –200CB 

series airplanes); or Boeing Special Attention 

Service Bulletin 757–30–0020, Revision 3, 

dated December 16, 2011 (for Model 757–300 

series airplanes): Do the actions required by 

paragraph (g) of this AD within 500 flight 

hours after the connection re-assembly; and 

thereafter at the applicable interval specified 

in paragraph (g)(1) or (g)(2) of this AD. 

(j) Exception to Compliance Time for Certain 

Windshield Replacement 

If, during the inspection required by 

paragraph (g) or (i) of this AD, the screw is 

found cross threaded: Do the applicable 

actions specified in paragraph (j)(1) or (j)(2) 

of this AD. 

(1) If the terminal lug is loose and cannot 

be tightened: Before further flight, replace 

that windshield, in accordance with the 

Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 757–30– 

0019, Revision 3, dated December 16, 2011 

(for Model 757–200, –200PF, and –200CB 

series airplanes); or Boeing Special Attention 

Service Bulletin 757–30–0020, Revision 3, 

dated December 16, 2011 (for Model 757–300 

series airplanes). 

(2) If the terminal lug is tight or can be 

tightened: Replace that windshield within 

500 flight hours after the inspection, in 

accordance with the Accomplishment 

Instructions Boeing Special Attention Service 

Bulletin 757–30–0019, Revision 3, dated 

December 16, 2011 (for Model 757–200, 

–200PF, and –200CB series airplanes); or 

Boeing Special Attention Service Bulletin 

757–30–0020, Revision 3, dated December 

16, 2011 (for Model 757–300 series 

airplanes). 

(k) Optional Terminating Action 

Replacing a flight deck windshield that 

uses screws and lugs for the electrical 

connections with a flight deck windshield 

that uses pins and sockets for the electrical 

connections, in accordance with the 

Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 757–30– 

0019, Revision 3, dated December 16, 2011 

(for Model 757–200, –200PF, and –200CB 

series airplanes); or Boeing Special Attention 

Service Bulletin 757–30–0020, Revision 3, 

dated December 16, 2011 (for Model 757–300 

series airplanes); ends the repetitive 

inspection requirements of paragraph (g) of 

this AD for that windshield. 

(l) Related AD Termination 

Accomplishing the actions required by this 

AD terminates the requirements of 

paragraphs (g), (j), and (k) of AD 2010–15–01, 

Amendment 39–16367 (75 FR 39804, July 13, 

2010), for that airplane only. 

(m) Credit for Previous Actions 

This paragraph provides credit for the 

actions required by this AD, if those actions 

were performed before the effective date of 

this AD using Boeing Special Attention 

Service Bulletin 757–30–0019, Revision 2, 

dated April 19, 2010 (for Model 757–200, 

–200PF, and –200CB series airplanes); or 

Boeing Special Attention Service Bulletin 

757–30–0020, Revision 2, dated March 31, 

2010 (for Model 757–300 series airplanes); 

which are not incorporated by reference in 

this AD. 

(n) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Seattle Aircraft 

Certification Office (ACO), FAA, has the 

authority to approve AMOCs for this AD, if 

requested using the procedures found in 14 

CFR 39.19. In accordance with 14 CFR 39.19, 

send your request to your principal inspector 

or local Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the ACO, send it to the 

attention of the person identified in the 

Related Information section of this AD. 

Information may be emailed to: 9-ANMSeattle-ACO-AMOC-Requests@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(3) AMOCs approved previously in 

accordance with AD 2010–15–01, 

Amendment 39–16367 (75 FR 39804, July 13, 

2010), that are associated with the J5 (lower) 

terminal only are approved as AMOCs for the 

actions specified in paragraphs (g), (h), (i), (j), 

and (k) of this AD for the J5 (lower) terminal 

only. 

(4) AMOCs approved previously in 

accordance with AD 2010–15–01, 

Amendment 39–16367 (75 FR 39804, July 13, 

2010), that install windows with pin/socket 

electrical connectors (both upper and lower) 

are approved as AMOCs for the actions 

specified in paragraphs (g), (h), (i), (j), and (k) 

of this AD. 

(o) Related Information 

(1) For more information about this AD, 

contact Elias Natsiopoulos, Aerospace 

Engineer, Systems and Equipment Branch, 

ANM–130S, FAA, Seattle Aircraft 

Certification Office (ACO), 1601 Lind Avenue 

SW., Renton, WA 98057–3356; phone: 425– 

917–6478; fax: 425–917–6590; email: 

Elias.Natsiopoulos@faa.gov. 

(2) For Boeing service information 

identified in this AD, contact Boeing 

Commercial Airplanes, Attention: Data & 

Services Management, P.O. Box 3707, MC 

2H–65, Seattle, WA 98124–2207; telephone 

206–544–5000, extension 1; fax 206–766– 

5680; Internet https:// 

www.myboeingfleet.com. You may review 

copies of the referenced service information 

at the FAA, Transport Airplane Directorate, 

1601 Lind Avenue SW., Renton, WA. For 

information on the availability of this 

material at the FAA, call 425–227–1221. 

(p) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(i) Boeing Special Attention Service 

Bulletin 757–30–0019, Revision 3, dated 

December 16, 2011. 

(ii) Boeing Special Attention Service 

Bulletin 757–30–0020, Revision 3, dated 

December 16, 2011. 

(3) For Boeing service information 

identified in this AD, contact Boeing 

Commercial Airplanes, Attention: Data & 

Services Management, P.O. Box 3707, MC 

2H–65, Seattle, WA 98124–2207; telephone 

206–544–5000, extension 1; fax 206–766– 

5680; Internet https:// 

www.myboeingfleet.com. 

(4) You may review copies of the 

referenced service information at the FAA, 

Transport Airplane Directorate, 1601 Lind 

Avenue SW., Renton, WA. For information 

on the availability of this material at the 

FAA, call 425–227–1221. 

(5) You may view this service information 

that is incorporated by reference at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, call 

202–741–6030, or go to: http:// 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued in Renton, Washington, on 

November 30, 2012. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2012–29714 Filed 12–11–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–0496; Directorate 

Identifier 2011–NM–263–AD; Amendment 

39–17283; AD 2012–25–02] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc. Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 


emcdonald on DSK67QTVN1PROD with 
Federal Register / Vol. 77, No. 239 / Wednesday, December 12, 2012 / Rules and Regulations 73903 

SUMMARY: We are superseding an 

existing airworthiness directive (AD) for 

certain Bombardier, Inc. Model CL–600– 

2B19 (Regional Jet Series 100 & 440) 

airplanes. That AD currently requires 

revising the airworthiness limitations 

section (AWL) of the Instructions for 

Continued Airworthiness (ICA) of the 

Canadair Regional Jet Maintenance 

Requirements Manual (MRM) by 

incorporating new procedures for 

repetitive detailed and special detailed 

inspections for cracking of the aft 

pressure bulkhead. This new AD 

requires revising the maintenance 

program to incorporate a revised task 

specified in a certain temporary 

revision, which requires an improved 

non-destructive inspection procedure; 

and adds airplanes to the applicability. 

This AD was prompted by multiple 

reports of cracks on the forward face of 

the rear pressure bulkhead (RPB) web. 

We are issuing this AD to detect and 

correct cracking in the RPB, which 

could result in reduced structural 

integrity and rapid decompression of 

the airplane. 

DATES: This AD becomes effective 

January 16, 2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of January 16, 2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain other publication listed in 

this AD as of November 29, 2005 (70 FR 

69073, November 14, 2005). 

ADDRESSES: You may examine the AD 

docket on the Internet at http:// 

www.regulations.gov or in person at the 

U.S. Department of Transportation, 

Docket Operations, M–30, West 

Building Ground Floor, Room W12–140, 

1200 New Jersey Avenue SE., 

Washington, DC. 

FOR FURTHER INFORMATION CONTACT: 

Jeffrey Zimmer, Aerospace Engineer, 

Airframe and Mechanical Systems 

Branch, ANE–171, FAA, New York 

Aircraft Certification Office, 1600 

Stewart Avenue, Suite 410, Westbury, 

New York 11590; telephone (516) 228– 

7306; fax (516) 794–5531. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that would 

apply to the specified products. That 

NPRM was published in the Federal 

Register on June 1, 2012 (77 FR 32439), 

and proposed to supersede AD 2005– 

23–01, Amendment 39–14359 (70 FR 

69073, November 14, 2005). That NPRM 

proposed to correct an unsafe condition 

for the specified products. Transport 

Canada Civil Aviation (TCCA) 

Mandatory Continuing Airworthiness 

Information (MCAI) states: 

Cracks on the forward face of the Rear 

Pressure Bulkhead (RPB) web have been 

discovered on three CL–600–2B19 aeroplanes 

in-service. This indicates that the existing 

inspection requirements of Airworthiness 

Limitation (AWL) task 53–61–153 mandated 

by [TCCA] AD CF–2005–13R1 are not 

adequate. Failure of the RPB could result in 

rapid decompression of the aeroplane. 

A Temporary Revision (TR) has been made 

to Part 2 of the Maintenance Requirements 

Manual (MRM) to revise the existing AWL 

task by introducing an improved NonDestructive Inspection (NDI) procedure to 

ensure that fatigue cracking of the RPB is 

detected and corrected. 

This [TCCA] directive mandates the 

incorporation of a new NDI procedure for 

AWL task number 53–61–153. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

have considered the comments received. 

Request To Remove Certain Paragraphs 

of the NPRM (77 FR 32439, June 1, 

2012) 

Air Wisconsin requested that we 

remove paragraphs (g) and (h) from the 

NPRM (77 FR 32439, June 1, 2012) 

because paragraph (i) of the NPRM 

supersedes those paragraphs. Air 

Wisconsin stated several examples of 

how paragraphs (g) and (h) are 

superseded by paragraph (i) of the 

NPRM. 

We disagree with the commenter’s 

request to remove paragraphs (g) and (h) 

from this final rule. We find it necessary 

to restate those paragraphs in this final 

rule to ensure the existing inspections 

are done until the required maintenance 

program revision specified in paragraph 

(i) of this AD is accomplished. In 

addition, if an airplane is imported into 

the United States, it is necessary to 

accomplish the requirements of 

paragraph (g) of this AD before the 

airplane may be operated in this 

country. 

However, we find that clarification of 

paragraph (i) of this AD is necessary. 

Once the maintenance program revision 

is accomplished, the restated 

requirements of paragraph (g) of this AD 

are terminated. Therefore, we have 

revised the last sentence of paragraph (i) 

of this AD to specify that doing the 

revision required by paragraph (i) of this 

AD terminates the requirements of 

paragraph (g) of this AD. 

In addition, we have retained 

paragraph (h) in this final rule because 

it is necessary to allow Canadair 

Regional Jet Temporary Revision TR 

2B–2109, dated October 13, 2005, to be 

removed from the maintenance 

requirements manual once a general 

revision is done. Further, we have 

determined that it is necessary to add a 

paragraph similar to paragraph (h) of 

this AD to allow removal of the 

temporary revision specified in 

paragraph (i) of this AD. Accordingly, 

we have revised this final rule to add 

new paragraph (k) to this AD to specify 

that information. Subsequent 

paragraphs have been reidentified. 

Request To Revise Serial Numbers 

Air Wisconsin requested that we 

correct the serial numbers in paragraph 

(c) or (g) of the NPRM (77 FR 32439, 

June 1, 2012) for consistency. 

We disagree with the request. The 

serial numbers specified in paragraph 

(g) of this AD are only those that were 

part of the applicability of AD 2005–23– 

01, Amendment 39–14359 (70 FR 

69073, November 14, 2005). Paragraph 

(c) of this AD lists all serial numbers 

that are affected by this new AD. 

Requests To Clarify Compliance Time 

In regard to paragraph (i)(2) of the 

NPRM (77 FR 32439, June 1, 2012), Air 

Wisconsin requested we clarify that, if 

the last inspection performed met the 

requirements of AWL 53–61–153 

specified in Bombardier TR 2B–2187, 

dated June 22, 2011, to Appendix B— 

Airworthiness Limitations, of Part 2 of 

the Bombardier CL–600–2B19 MRM, the 

next inspection cycle as specified in 

that TR is acceptable provided that 

interval is not greater than that specified 

in Bombardier TR 2B–2187, dated June 

22, 2011. 

In addition, Comair requested that we 

provide credit for paragraph (i) of the 

NPRM (77 FR 32439, June 1, 2012) for 

operators that performed previous 

inspections using the special detailed 

inspection option specified in AWL 53– 

61–153 of the Canadair Regional Jet TR 

2B–2109, dated October 13, 2005, to 

Appendix B, ‘‘Airworthiness 

Limitations,’’ of Part 2 of the Canadair 

Regional Jet MRM. Comair stated that it 

requested this credit so that operators 

would not be subject to the initial 

compliance time specified in paragraph 

(i)(1) or (i)(2) of the NPRM (77 FR 

32439, June 1, 2012). 

We agree to clarify the inspection 

compliance time. We agree that, if the 

last special detailed inspection (not the 

detailed visual inspection) performed 

met the requirements of AWL 53–61– 

153 specified in Bombardier TR 2B– 

2187, dated June 22, 2011; or Canadair 

Regional Jet TR 2B–2109, dated October 


emcdonald on DSK67QTVN1PROD with 
73904 Federal Register / Vol. 77, No. 239 / Wednesday, December 12, 2012 / Rules and Regulations 

13, 2005; to Appendix B— 

Airworthiness Limitations, of Part 2 of 

the Bombardier CL–600–2B19 MRM; the 

next inspection should be at the next 

compliance time specified in AWL 53– 

61–153 of Bombardier TR 2B–2187, 

dated June 22, 2011 (i.e., within 4,360 

landings since the last inspection). We 

have changed paragraph (i) of this AD 

to state that for airplanes that have 

already complied with AWL 53–61–153 

of Bombardier TR 2B–2187, dated June 

22, 2011, or the special detailed 

inspection option specified in Canadair 

Regional Jet TR 2B–2109, dated October 

13, 2005, the initial compliance time for 

AWL 53–61–153 is within 4,360 flight 

cycles after accomplishing the most 

recent special detailed inspection, or 

within 1,500 flight cycles after 

accomplishing the most recent detailed 

inspection as specified in AWL 53–61– 

153 of Canadair Regional Jet TR 2B– 

2109, dated October 13, 2005, 

whichever occurs later. 

Request To Approve Previous 

Alternative Methods of Compliance 

(AMOC) 

Air Wisconsin requested that a 

statement be added to paragraph (k) of 

the NPRM (77 FR 32439, June 1, 2012) 

approving use of existing AMOCs that 

were approved previously in accordance 

with AD 2005–23–01, Amendment 39– 

14359 (70 FR 69073, November 14, 

2005). 

We agree to allow existing AMOCs 

approved in accordance with AD 2005– 

23–01, Amendment 39–14359 (70 FR 

69073, November 14, 2005), as AMOCs 

for the corresponding requirements of 

paragraphs (g) and (h) of this AD only. 

We have revised paragraph (l)(1) of this 

AD (referred to as paragraph (k)(1) of the 

NPRM (77 FR 32439, June 1, 2012)) 

accordingly. 

Request To Remove Reference to a 

Certain TR 

Air Wisconsin requested that we 

remove the reference to Canadair 

Regional Jet TR 2B–2109, dated October 

13, 2005, to Appendix B— 

Airworthiness Limitations, of Part 2 of 

the Bombardier CL–600–2B19 MRM 

from paragraph (j) of the NPRM (77 FR 

32439, June 1, 2012). Air Wisconsin 

noted that Canadair Regional Jet TR 2B– 

2109, dated October 13, 2005, conflicts 

with Bombardier TR 2B–2187, dated 

June 22, 2011, and stated that 

Bombardier TR 2B–2187, dated June 22, 

2011, specifically removed the ‘‘visual 

inspection’’ option that was in Canadair 

Regional Jet TR 2B–2109, dated October 

13, 2005. 

We agree with the request for the 

reasons stated by the commenter. We 

have removed the reference to Canadair 

Regional Jet TR 2B–2109, dated October 

13, 2005, to Appendix B— 

Airworthiness Limitations, of Part 2 of 

the Bombardier CL–600–2B19 MRM, 

from paragraph (j) of this AD. Paragraph 

(i) of this AD requires that the 

maintenance program be revised to 

incorporate Bombardier TR 2B–2187, 

dated June 22, 2011. Paragraph (i) of this 

AD also specifies that once the revision 

is done, the requirements of paragraph 

(g) of this AD are terminated (paragraph 

(g) of the AD incorporated Bombardier 

TR 2B–2109, dated October 13, 2005). 

Conclusion 

We reviewed the available data, 

including the comments received, and 

determined that air safety and the 

public interest require adopting the AD 

with the changes described previously 

and minor editorial changes. We have 

determined that these changes: 

• Are consistent with the intent that 

was proposed in the NPRM (77 FR 

32439, June 1, 2012) for correcting the 

unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM (77 FR 32439, 

June 1, 2012). 

Costs of Compliance 

We estimate that this AD will affect 

about 586 products of U.S. registry. 

The actions that are required by AD 

2005–23–01, Amendment 39–14359 (70 

FR 69073, November 14, 2005), and 

retained in this AD take about 2 workhours per product, at an average labor 

rate of $85 per work hour. Based on 

these figures, the estimated cost of the 

currently required actions is $170 per 

product. 

We estimate that it will take about 1 

work-hour per product to comply with 

the new basic requirements of this AD. 

The average labor rate is $85 per workhour. Based on these figures, we 

estimate the cost of this AD to the U.S. 

operators to be $49,810, or $85 per 

product. 

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 determined that this AD will not 

have federalism implications under 

Executive Order 13132. This AD will 

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 this AD: 

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); 

3. Will not affect intrastate aviation in 

Alaska; and 

4. 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 AD and placed it in the AD docket. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Operations office between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. The AD docket 

contains the NPRM (77 FR 32439, June 

1, 2012), the regulatory evaluation, any 

comments received, and other 

information. The street address for the 

Docket Operations office (telephone 

(800) 647–5527) is in the ADDRESSES

section. Comments will be available in 

the AD docket shortly after receipt. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

Adoption of the Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 14 CFR part 39 as 

follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 


emcdonald on DSK67QTVN1PROD with 
Federal Register / Vol. 77, No. 239 / Wednesday, December 12, 2012 / Rules and Regulations 73905 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by 

removing airworthiness directive (AD) 

2005–23–01, Amendment 39–14359 (70 

FR 69073, November 14, 2005), and 

adding the following new AD: 

2012–25–02 Bombardier, Inc.: Amendment 

39–17283. Docket No. FAA–2012–0496; 

Directorate Identifier 2011–NM–263–AD. 

(a) Effective Date 

This airworthiness directive (AD) becomes 

effective January 16, 2013. 

(b) Affected ADs 

This AD supersedes AD 2005–23–01, 

Amendment 39–14359 (70 FR 69073, 

November 14, 2005). 

(c) Applicability 

(1) This AD applies to Bombardier, Inc. 

Model CL–600–2B19 (Regional Jet Series 100 

& 440) airplanes, certificated in any category, 

serial numbers 7003 and subsequent. 

(2) This AD requires revisions to certain 

operator maintenance documents to include 

new inspections. Compliance with these 

inspections is required by 14 CFR 91.403(c). 

For airplanes that have been previously 

modified, altered, or repaired in the areas 

addressed by these inspections, the operator 

may not be able to accomplish the 

inspections described in the revisions. In this 

situation, to comply with 14 CFR 91.403(c), 

the operator must request approval for an 

alternative method of compliance according 

to paragraph (l)(1) of this AD. The request 

should include a description of changes to 

the required inspections that will ensure the 

continued damage tolerance of the affected 

structure. The FAA has provided guidance 

for this determination in FAA Advisory 

Circular (AC) 25.1529–1A, dated November 

20, 2007 (http://rgl.faa.gov/ 

Regulatory_and_Guidance_Library/ 

rgAdvisoryCircular.nsf/list/AC%2025.1529- 

1A/$FILE/AC%2025.1529-1A.pdf). 

(d) Subject 

Air Transport Association (ATA) of 

America Code 53, Fuselage. 

(e) Reason 

This AD was prompted by multiple reports 

of cracks on the forward face of the rear 

pressure bulkhead (RPB) web. We are issuing 

this AD to detect and correct cracking in the 

RPB, which could result in reduced 

structural integrity and rapid decompression 

of the airplane. 

(f) Compliance 

You are responsible for having the actions 

required by this AD performed within the 

compliance times specified, unless the 

actions have already been done. 

(g) Retained Revision to the Airworthiness 

Limitations (AWL) Section 

This paragraph restates the requirements of 

paragraph (f) of AD 2005–23–01, Amendment 

39–14359 (70 FR 69073, November 14, 2005). 

For airplanes having serial numbers 7003 

through 8025 inclusive, 8030, and 8034: 

Within 30 days after November 29, 2005 (the 

effective date of AD 2005–23–01), revise the 

AWL section of the Instructions for 

Continued Airworthiness of the Canadair 

Regional Jet Maintenance Requirements 

Manual (MRM), Part 2, Appendix B, 

‘‘Airworthiness Limitations,’’ by 

incorporating the information specified in 

AWL 53–61–153 of the Canadair Regional Jet 

Temporary Revision (TR) 2B–2109, dated 

October 13, 2005, into the AWL section. 

Perform the applicable detailed and special 

detailed inspections for cracking of the aft 

pressure bulkhead, as specified in that TR, at 

the applicable compliance time specified in 

table 1 to paragraph (g) of this AD. Repeat the 

detailed inspection thereafter at intervals not 

to exceed 1,085 flight cycles, and repeat the 

special detailed inspection thereafter at 

intervals not to exceed 4,360 flight cycles, in 

accordance with the procedures specified in 

AWL 53–61–153, as introduced by Canadair 

Regional Jet TR 2B–2109, dated October 13, 

2005, to Appendix B, ‘‘Airworthiness 

Limitations, of Part 2 of the Canadair 

Regional Jet MRM. Accomplishing the 

revision required by paragraph (i) of this AD 

terminates the requirements of this 

paragraph. 

TABLE 1 TO PARAGRAPH (g) OF THIS AD—COMPLIANCE TIMES FOR INITIAL INSPECTIONS

As of November 29, 2005 (the effective date of AD 2005–23–01, 

Amendment 39–14359 (70 FR 69073, November 14, 2005)): If the total 

flight cycles accumulated on the airplane are— 

Inspect before the airplane accumulates— 

8,000 or fewer .......................................................................................... 12,000 total flight cycles. 

More than 8,000 but fewer than 12,000 ................................................... 15,000 total flight cycles or within 4,000 flight cycles after November 

29, 2005 (the effective date of AD 2005–23–01, Amendment 39– 

14359 (70 FR 69073, November 14, 2005)), whichever is first. 

12,000 or more but fewer than 15,000 .................................................... 17,000 total flight cycles or within 3,000 flight cycles after November 

29, 2005 (the effective date of AD 2005–23–01 Amendment 39– 

14359 (70 FR 69073, November 14, 2005)), whichever is first. 

15,000 or more but fewer than 17,000 .................................................... 18,500 total flight cycles or within 2,000 flight cycles after November 

29, 2005 (the effective date of AD 2005–23–01 Amendment 39– 

14359 (70 FR 69073, November 14, 2005)), whichever is first. 

17,000 or more but fewer than 18,500 .................................................... 19,500 total flight cycles or within 1,500 flight cycles after November 

29, 2005 (the effective date of AD 2005–23–01, Amendment 39– 

14359 (70 FR 69073, November 14, 2005)), whichever is first. 

18,500 or more but fewer than 19,500 .................................................... 20,000 total flight cycles or within 1,000 flight cycles after November 

29, 2005 (the effective date of AD 2005–23–01, Amendment 39– 

14359 (70 FR 69073, November 14, 2005)), whichever is first. 

19,500 or more ......................................................................................... 500 flight cycles after November 29, 2005 (the effective date of AD 

2005–23–01, Amendment 39–14359 (70 FR 69073, November 14, 

2005)). 

(h) Retained General Revision of the MRM 

This paragraph restates the requirements of 

paragraph (g) of AD 2005–23–01, 

Amendment 39–14359 (70 FR 69073, 

November 14, 2005). For airplanes having 

serial numbers 7003 through 8025 inclusive, 

8030, and 8034: When the information in 

AWL 53–61–153 of the Canadair Regional Jet 

TR 2B–2109, dated October 13, 2005, to 

Appendix B, ‘‘Airworthiness Limitations,’’ of 

Part 2 of the Canadair Regional Jet MRM, is 

included in the general revisions of the 

MRM, the general revisions may be inserted 

into the AWL section of the Instructions for 

Continued Airworthiness, and this 

information may be removed from the MRM. 

(i) New Requirement of This AD: 

Maintenance Program Revision 

Within 60 days after the effective date of 

this AD: Revise the maintenance program by 

incorporating the revised inspection 

requirements specified in AWL 53–61–153 of 

Bombardier TR 2B–2187, dated June 22, 

2011, to Appendix B—Airworthiness 

Limitations, of Part 2 of the Bombardier CL– 

600–2B19 MRM. The initial compliance 

times for the task are at the applicable time 

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

AD. Doing the revision required by paragraph 

(i) of this AD terminates the requirements of 

paragraph (g) of this AD. 


emcdonald on DSK67QTVN1PROD with 
73906 Federal Register / Vol. 77, No. 239 / Wednesday, December 12, 2012 / Rules and Regulations 

(1) For airplanes on which the special 

detailed inspection specified in AWL 53–61– 

153 of Bombardier TR 2B–2187, dated June 

22, 2011; or Canadair Regional Jet TR 2B– 

2109, dated October 13, 2005; has not been 

done as of the effective date of this AD: The 

initial compliance time for AWL 53–61–153 

is at the applicable time specified in 

paragraph (i)(1)(i) or (i)(1)(ii) of this AD. 

(i) For airplanes that have accumulated 

10,500 total flight cycles or less as of the 

effective date of this AD: Before the 

accumulation of 12,000 total flight cycles. 

(ii) For airplanes that have accumulated 

more than 10,500 total flight cycles as of the 

effective date of this AD: Within 1,500 flight 

cycles after the effective date of this AD. 

(2) For airplanes on which the special 

detailed inspection specified in AWL 53–61– 

153 of Bombardier TR 2B–2187, dated June 

22, 2011; or Canadair Regional Jet TR 2B– 

2109, dated October 13, 2005; has been done 

as of the effective date of this AD: The initial 

compliance time for AWL 53–61–153 is 

within 4,360 flight cycles after accomplishing 

the most recent special detailed inspection, 

or within 1,500 flight cycles after 

accomplishing the most recent detailed 

inspection as specified in AWL 53–61–153 of 

Canadair Regional Jet TR 2B–2109, dated 

October 13, 2005, whichever occurs later. 

(j) No Alternative Actions or Intervals 

After accomplishing the revisions required 

by paragraph (i) of this AD, no alternative 

actions (e.g., inspections) or intervals may be 

used other than those specified in 

Bombardier TR 2B–2187, dated June 22, 

2011, to Appendix B—Airworthiness 

Limitations, of Part 2 of the Bombardier CL– 

600–2B19 MRM, unless the actions and 

intervals are approved as an AMOC in 

accordance with the procedures specified in 

paragraph (l)(1) of this AD. 

(k) New Action of This AD: General Revision 

of the MRM 

The maintenance program revision 

required by paragraph (i) of this AD may be 

done by inserting a copy of Bombardier TR 

2B–2187, dated June 22, 2011, into Appendix 

B—Airworthiness Limitations, of Part 2 of 

the Bombardier CL–600–2B19 MRM. When 

this TR has been included in general 

revisions of the MRM, the general revisions 

may be inserted in the MRM, provided the 

relevant information in the general revision 

is identical to that in this TR. 

(l) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York Aircraft 

Certification Office (ACO), ANE–170, FAA, 

has the authority to approve AMOCs for this 

AD, if requested using the procedures found 

in 14 CFR 39.19. In accordance with 14 CFR 

39.19, send your request to your principal 

inspector or local Flight Standards District 

Office, as appropriate. If sending information 

directly to the manager of the ACO, send it 

to ATTN: Program Manager, Continuing 

Operational Safety, FAA, New York ACO, 

1600 Stewart Avenue Suite 410, Westbury, 

New York 11590; telephone (516) 228–7300; 

fax (516) 794–5531. Before using any 

approved AMOC, notify your appropriate 

principal inspector, or lacking a principal 

inspector, the manager of the local flight 

standards district office/certificate holding 

district office. The AMOC approval letter 

must specifically reference this AD. AMOCs 

approved previously in accordance with AD 

2005–23–01, Amendment 39–14359 (70 FR 

69073, November 14, 2005), are approved as 

AMOCs with the corresponding requirements 

of paragraphs (g) and (h) of this AD only. 

(2) Airworthy Product: For any requirement 

in this AD to obtain corrective actions from 

a manufacturer or other source, use these 

actions if they are FAA-approved. Corrective 

actions are considered FAA-approved if they 

are approved by the State of Design Authority 

(or their delegated agent). You are required 

to assure the product is airworthy before it 

is returned to service. 

(m) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(3) The following service information was 

approved for IBR on January 16, 2013. 

(i) Bombardier TR 2B–2187, dated June 22, 

2011, to Appendix B—Airworthiness 

Limitations, of Part 2 of the Bombardier CL– 

600–2B19 MRM. 

(ii) Reserved. 

(4) The following service information was 

approved for IBR on November 29, 2005 (70 

FR 69073, November 14, 2005). 

(i) Canadair Regional Jet Temporary 

Revision 2B–2109, dated October 13, 2005, to 

the Canadair Regional Jet Maintenance 

Requirements Manual, Part 2, Appendix B, 

‘‘Airworthiness Limitations.’’ 

(ii) Reserved. 

(5) For service information identified in 

this AD, contact Bombardier, Inc., 400 CoˆteVertu Road West, Dorval, Que ́bec H4S 1Y9, 

Canada; telephone 514–855–5000; fax 514– 

855–7401; email 

thd.crj@aero.bombardier.com; Internet http:// 

www.bombardier.com. 

(6) You may review copies of the service 

information at the FAA, Transport Airplane 

Directorate, 1601 Lind Avenue SW., Renton, 

WA. For information on the availability of 

this material at the FAA, call 425–227–1221. 

(7) You may view this service information 

that is incorporated by reference at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, call 

202–741–6030, or go to: http:// 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued in Renton, Washington, on 

November 30, 2012. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2012–29708 Filed 12–11–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–0501; Directorate 

Identifier 2009–SW–083–AD; Amendment 

39–17258; AD 2012–23–02] 

RIN 2120–AA64 

Airworthiness Directives; Agusta 

S.p.A. Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for Agusta 

S.p.A. (Agusta) Model A109E and 

Model A109S helicopters with certain 

lower semichannel assemblies installed. 

This AD requires a one-time inspection 

of the lower semichannel assemblies to 

determine if metallic spacers are 

installed. If the metallic spacers are 

installed, this AD requires an inspection 

for the correct installation of the 

metallic spacers on the semichannels 

and for the correct seating of the gaskets. 

If the metallic spacers are not installed 

with rivets, the lower semichannel 

assemblies must be modified, and the 

main drive shaft must be inspected for 

damage. This AD was prompted by 

reports of damage to the main drive 

shaft caused by improperly secured 

metallic spacers on some A109 model 

helicopters. The actions of this AD are 

intended to detect missing spacer rivets, 

which could allow the metallic spacers 

to rotate and lead to damage and failure 

of the main drive shaft, and subsequent 

loss of helicopter control. 

DATES: This AD is effective January 16, 

2013. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain documents listed in this AD 

as of January 16, 2013. 

ADDRESSES: For service information 

identified in this AD, contact Agusta 

Westland, Customer Support & Services, 

Via Per Tornavento 15, 21019 Somma 

Lombardo (VA) Italy, ATTN: Giovanni 

Cecchelli; telephone 39–0331–711133; 

fax 39 0331 711180; or at http:// 

www.agustawestland.com/technicalbullettins. You may review the 

referenced service information at the 

FAA, Office of the Regional Counsel, 

Southwest Region, 2601 Meacham 

Blvd., Room 663, Fort Worth, Texas 

76137. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 


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